iva AYYESX a COMMERCIAL 82 EE TBF FISHERIES fue: © FEE 4 ait - 4 win, i ee ie a. Vol. 15, No.7 — “JULY 1953 FISH and WILDLIFE SERVICE United States Department of the Interior Washington, D.C. UNITED STATES Re DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE DOUGLAS McKAY, SECRETARY JOHN L. FARLEY, DIRECTOR = 5a. G7 A review of developments and news of the fishery industries prepared in the BRANCH OF COMMERCIAL FISHERIES A. W. Anderson, Editor F. F. Johnson, Associate Editor J. Pileggi and J. J. O'Brien, Assistant Editors Mailed free to members of the fishery and allied industries. Address correspond- ence and requests to the: Director, Fish and Wildlife Service, U.S. Department of the Interior, Washington 25, D. C. Publication of material from sources outside the Service is not an endorsement. The Service is not responsible for the accuracy of facts, views, or opinions contained in material from outside sources. Although the contents of this publication have not been copyrighted and may be re- printed freely, reference to the source will be appreciated. The printing of this publication has been approved by’the Director of the Bureau of the Budget, November 5, 1952. CONTENTS COVER: DECKLOAD OF BLUEFIN TUNA ( IHUNNUS THYNNUS ) C AUGHT BY THE WESTERN EXPLORER, A VESSEL CHARTED BY THE SERVICE'S BRANCH OF COMMERCIAL FISHERIES TO CONDUCT THE INITIAL PHASE OF THE BLUEFIN-TUNA EXPLORATORY FISHING OPERATION IN THE GULF OF MAINE DURING THE SUMMER AND EARLY FALL OF 1951. (SEE COMMERCIAL FISHERIES REVIEW, MARCH 1952, P, ts) PAGE GULF OF MAINE BLUEFIN TUNA EXPLORATION--1952, BY Js J. MURRAY csscececoceccccsccesorores 1 s * * &@ & © PAGE PAGE RESEARCH IN SERVICE LABORATORIES: ...+e+e- 18 |TRENDS AND DEVELOPMENTS (CONTD.): PROGRESS ON PROJECTS, JUNE 1953 ....0.2. 18 PACIFIC OCEANIC FISHERY INVESTIGATIONS TECHNICAL NOTE NO. 27--ALASKA POLLOCK: (CONTD.): PROXIMATE COMPOSITION; AMINO ACID, NEW TYPE LONG-LINE GEAR SUCCESSFULLY THIAMINE, AND RIBOFLAVIN CONTENT; USE TRIED BY JOHN R. MANNING (CRUISE NO. AS MINK FEED, BY R. G. LANDGRAF, JR. .. 20 15) peje iereleeats oinisiel acioeilselacielclelae haem TRENDS AND DEVELOPMENTS: wcccceccccceseses 23 U. S. FOREIGN-FLAG FISHING VESSEL REGU- CALIFORNIA: LATIONS DO NOT APPLY TO GUAM AND SARDINE DATA COLLECTED BY VESSEL AMERIGAN) SAMOA vcs. cise se ces 0 te oe eeS YELLOWFIN (CRUISE 53-Y-5) ....cccceees 23 U. S. PACK OF PACIFIC COAST SEA HER- YELLOWTAIL FISHED AND TAGGED BY VESSEL RIING, 1952. 45). weiss science sents ame ORCA. Sate agave dle ale glo Sika Gla cieidlewlelelevelerioanrn yi23 WHOLESALE PRICES, MAY 1953 .....e-ee00- 32 TRAWLER NAUTILUS ADDED TO-STATE'S FISHERY PRODUCTS MARKETING PROSPECTS MARINE RESEARCH FLEET ..ccescecceseces 24 FOR JULY-SEPTEMBER 1953 ....cesseevers 34 FEDERAL PURCHASES OF FISHERY PRODUCTS .: 24 |/FOREIGN: |..¢..cc. cece ccececccuccnenucune 35 GEAR RESEARCH AND DEVELOPMENT: INTERNAT | ONAL: UNDERWATER SOUND AND TELEVISION TESTED NORTH PACIFIC FISHERIES TREATY RATIFIED 35 OFF BAHAMAS BY RESEARCH VESSEL POMPANO 24 ANTARCTIC 1953 WHALE O|L PRODUCTION GULF EXPLORATORY FISHERY PROGRAM: AUMOSTMSOUDEOUT NS ce aniem eee Cee ee SS) TUNA BAIT GROUNDS FOUND BY OREGON IN WORLD MARINE-O1L PRODUCTION, 1952 .... 36 GUIERA (IGRUIISEINORVaIG)) ors a enna s a a2 NORTHWEST ATLANTIC FISHERIES COM- JAPANESE FROZEN-COOKED TUNA SHIPPED TO MISSION: Ws So uiN UNGENMED) CANS6 Se oboocéonueouon. 2y REPORT OF THIRD ANNUAL MEETING ...... 38 METAL CANS--SHIPMENTS FOR FISHERY PROD- NORTH EUROPEAN OVERFISHING COMMISSION: UCTS), “ JANUARY:=APRIDL | 11053) sic srecicicienele ee sien teu7 PERMANENT COMMISSION HOLDS FIRST NORTH ATLANTIC FISHERY. INVESTIGATIONS: MEETING. A\c'cia.sevaicisiei Sioleereietree eee le meer MESH-SELECTIVITY EXPERIMENTS ON HADDOCK FOOD AND AGRICULTURE ORGANI ZATION: CONDUCTED BY ALBATROSS 111 (CRUISE NO. FISHERIES DEVELOPMENT PROBLEMS IN Lait earn eR aa a CR Tenia ORE I Ea! LATAIN AMERICA) cis cis 2 ois oevoteie ein chereieereleranee PACIFIC COAST HALIBUT. FISHERY: AUSTRALIA: AREAS 3A AND 1A CLOSED JULY 7 ......-2. 28 CANNED FISH PACK, 1952 ....cecseeecees 44 PACIFIC OCEANIC FISHERY INVESTIGATIONS: PROGRESS ON FISHERIES NEGOTIATIONS TUNA ATTRACTANTS TESTED BY CHARLES H. WITH: SAPAN: so ciselelaccnaceibistetute ctaleeior ie aenareroemeeaeae GILBERT /(GRUIISE, NO 6}! sos cenian@annice 2B CANADA: SKIPJACK TUNA STUDIES IN HAWAIIAN WA- BRINE-FREEZING OF FISH AT SEA .eceseee 44 TERS CONTINUED BY CHARLES H. GILBERT GOVERNMENT ADOPTS INSURANCE PLAN FOR (ERUISE INO) M2) Sen eee a ee mE os FiI'SHERMEN® a cross cictave « arotateronle einen ee Cerae CONTENTS CONTINUED ON PAGE 83 | COMMERCIAL FISHERIES REVIEW July 1953 Washington 25, D.C. Vol.15 , No.7 GULF OF MAINE BLUEFIN TUNA EXPLORATION-- 1952 By J. J. Murray* TABLE OF OONTENTS PAGE PAGE SUMMARY cococercrcereccceercrarccecccceos 1 FISHING AND SCOUTING RESULTS cecocccccvecee a, INTRODUCTION eeovceercecccvrecccecccercrce 2 LONG=LINE CATCHES wesc rcccccceccccrccae 7 AREA OF EXPLORATION cocccocecccccccccccoce 3 GILL=NET AND TRAMMEL=NET CATCHES ecocosee 10 EQUIPMENT AND OPERATIONAL PROCEDURES eecoe 3 TROLL CATCHES scccoeccecccccvccceccccces 10 VESSEL seccccececcsesccvvercecsvascecoe 3 WATER TEMPERATURES cooccececccececccees 10 LONG=LINE GEAR ceoccccccccscrcsevceccoces 3 SOME ADVANTAGES OF LONG=LINE FISHING GILL NETS AND TRAMMEL NETS eccoccovcececvae 6 FOR TUNA ccoccccccgee vevccecpecccvevee SURFACE TROLLING GEAR secoccceccccvccces 6 LOG OF FISHING TRIPS (CONDENSED) oceccces SUMMARY Exploratory fishing for bluefin tuna, using Japanese-style long-line gear, was conducted from June through October 1952 in offshore waters fromMaine to NewJersey. Gill nets, trammel nets, surface-trolling gear, and hand lines were also tested to a lesser extent. A catch of 311 bluefin tuna (about 12,000 pounds) was made with the long lines during July, August, and September, with best fishing during July and August. Between July 21 and August 10, 216 tunawere caught at the average rate of 12.8 tuna per hundred hooks. Individual catches ran as high as 46 tuna per hundred hooks. Best fish- ing results were obtained off Cape Cod and offEastern Point, Massachusetts. The total catch of sharks was over twice that of tuna. Gill nets and trammel nets failed to catch tuna in 16 sets. Catches on trolling lines were also poor, only 6 bluefin and 3 little tuna being taken. FIG. 1 - SCHOONER MARJORIE PARKER LEAVING PORTLAND, MAINE, All available evidence ON NITIAL EXPLORATORY FISHING T IN JUNE 1952, ; HER INITIAL E RAT ISH RIP JUNE 1952 suggests that this year's run of tuna in New England was far below normal. In spite of the low total catch, some aspects of this season's long-line fishing were encouraging. Potentially-val- uable tuna grounds producing excellent individual catches were found within 30miles # FISHERY METHODS AND EQUI PMENT SPECIALIST, EXPLORATORY FISHING AND GEAR DEVELOPMENT SECTION, BRANCH OF COMMERCIAL FISHERIES, U. S. FISH AND WILDLIFE SERVICE, PORTLAND, MAINE. 2 COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 of land. This is well within the operational range of small local fishing craft, which are easily adaptable to long-lining. The initial cost and upkeep of long- line gear is moderate. Also, long-line gear may be operated under rather severe weather conditions which would prohibit purse seining or other methods. A good supply of long-line bait is readily available in the immediate area during the fishing season. INTRODUCTION The second phase of exploratory fishing for bluefin tuna (Thunnus thynnus) in the Gulf of Maine and adjacent waters was conducted during the summer andearly fall of 1952 by the Exploratory Fishing and Gear Development Section, Branch of Commercial Fisheries, U. S. Fish and Wildlife Service. A New England fishing schooner was chartered from June through October, and exploratory operations were carried out in the offshore waters of New England, New York, and New Jersey. This work was a continuation of a project started in 1951 to investigate the possibilities of developing a Gulf of Maine commercial tuna fishery. Purse sein- ing was employed during the 1951 season and 190,000 pounds of bluefin were caught (Murray 1952). age | a CONNECTICUT 40' io HEW JERSEY feCENG nN © APPROXIMATE LOCATION OF LONG-LINE SETS. =ENCLOSES AREA COVERED BY SCH. MARJORIE PARKER DURING 1952 SEASON. [382 ~ 74° 72° 70° 68° FIG. 2 - AREA OF OPERATION DURING THE 1952 BLUEFIN TUNA EXPLORATION, SHOWING LOCATION OF LONG-LINE SETS. July 1953 COMMERCIAL FISHERIES REVIEW 3 To test other fishing methods, floating long-line gear developed and success- fully operated by the Japanese and Chinese in their offshore tuna fisheries was obtained from Japan and used as the principal fishing gear for the 1952 season. Other gear tested to a lesser extent included gill nets and trammel nets, surface- trolling lines, and hand lines. AREA OF EXPLORATION Most of the year's work was carried out between Nantucket Shoals and Portland, Maine. During July, August, and part of September, explorations were made mainly off Massachusetts Bay, along the eastern edge of South Channel, and on the small fishing banks lying up to 100 miles off the New England Coast. Cruises were made outside of the Gulf of Maine in September and October, and long-line operations were conducted on Browns Bank and off the Nova Scotian coast near the Seal Island fishing grounds. During June and early October, long-line sets were also made in the area southwest of Nantucket Shoals as far south as the lower New Jersey coast. This general area is contiguous to the route presumably traveled by the bluefin tuna in their seasonal migration to the Gulf of Maine. The area covered during the 1952 exploration and locations of long-line fishing operations are shown in figure 2. EQUIPMENT AND OPERATIONAL PROCEDURES VESSEL: The schooner Marjorie Parker, active for many years in the New Eng- land groundfish fisheries, was chartered for the season's work. Registered meas- urements of the vessel were: length, 78 ft.; beam, 21 ft.; depth, 9 ft.; tonnage, 76 gross tons. The vessel was powered with a 200-horsepower Diesel engine, and had a small Diesel auxiliary engine. Other equipment included a depth recorder, loran, radio direction finder, and radiotelephone. Deck arrangements were of a conventional schooner rig, with the pilothouse aft. The foremast was fitted with a crows-nest which served as a lookout stand during scouting operations. A crew of seven men handled the vessel and ran all fishing gear. LONG-LINE GEAR: Japanese tuna long lines are designed to operate at subsur- face levels, ranging to 50 or more fathoms in depth. The long line is suspended in an approximate horizontal position by the attachment of floats at one-basket intervals. Fishing depths may be varied by increasing or decreasing the lengthof float lines. Shapiro (1950) describes some of the many variations that are used in rigging tuna long lines. Forty baskets of Japanese long-line gear were used during this exploration. On the first trip and part of the second, locally-made long line was employed. The basket, used to hold one section of the long line, is the customary fish- ing unit. The components of one basket include main line, branch lines, float lines, and floats. Construction details of the gear used on the Marjorie Parker are shown in figure 3. A Japanese long-line hauler was installed on the starboard bow section of the main deck. Power was supplied by a two-cylinder gasoline engine coupled to the hauler by an automobile transmission. Long-line gear was set while the vessel was moving slow ahead. All hookswere baited before the setting operation started. The main line was made fast to aflag- pole buoy which was dropped overboard, and successive baskets of gear were paidout over the stern rail. Ends of the main line in individual baskets were tiedtogether, and glass floats (approximately one foot in diameter) with the selected float-line Vol. 15, No. 7 COMMERCIAL FISHERIES REVIEW Y30v371 3YIM °(a1v9S Ol NMVYa LON) YankWd AlYOrYVW AHL NO G3SN LVHL OL YVTIWIS YV3D 3NI7-DNOT YNNL JO WVYDVIG - € ‘“DI4 SSJNI1 HONVYS JO S1IVLIG .S , Ol Ol HINVYS Y3LNS9 YVWVAIMaS T3AIMS Z/1-€ “3NI7 NOLLOD G3yyvL ‘GlvI-aduvH +/1 1 " HONVYS ONS ,Gal ,001 ,001 3NIML NOLLOD Gauevt ‘Givi-auvH ‘avayHl-192 ‘on ‘3NI7 NI VW ,006 YV39 JO Lax¥SVE JNO JO SNOISN3WIOG SANI1 HOINVYD JNI1 NIVW NOILISOd SNIHSIS NI 3NIT SNOT July 1953 COMMERCIAL FISHERIES REVIEW 5 lengths were attached between baskets. For very shallow fishing, extra floats were attached to the center of the main line of each basket to reduce sag. A flagpole buoy was attached at every fifth basket and on the end of thelast basket. The gear was allowed to float free of the vessel except in periods of poor visibility when one end of the long line was secured to the vessel. When hauling, the gear was kept off the windward bow as the vessel moved up on it slowly. The end of the long line was brought aboard and passed over a roller set in the deck 7 : : rail and into the line ES | a ee hauler, which automatically ineunecoaaneennnyreirsesomecncenn ettnetainces enn NAMNIE f coiled the main line into : an empty basket placedon a low platform directly beneath the line-pulling sheaves. Branch lines were coiled by hand and placed in the baskets. Flagpole buoys and glass floats were removed asthey came aboard. Except for baiting, the gear was then ready for the next set. Under normal conditions 10 baskets could be set in20 minutes and the same num- ber could be hauled in about one hour, FIG. 4 - BAITED BASKETS OF LONG-LINE GEAR READY FOR FISHING. Most of the long-line bait used was purchased in New England fishing ports. Additional bait was caught at night with drift gill nets similar to those used in the mackerel fishery. These nets were 40 fathoms long and 75 meshes deep, constructed of 14/6 cotton twine, 33-inch stretched mesh. Of the baits tried, squid (Loligo pealei) was the most acceptable and was used on most of the long-line sets. It stayed on the hooks even during lengthy sets, and kept well on ice for - a periods of over a week. Menhaden (Brevoortia ty- rannus) and mackerel (Scom- ber scombrus) caught in drift—net operations had good hook endurance and satisfactory storage qual- ities. Menhaden made good chumand on afew occasions was used to attract tuna alongside the vessel. Of thebaits tested, sea her- ring (Clupea harengus) and alewives (Pomolobus psuedo- harengus) “had the softest flesh, making it difficult to ee them on hooks for even comparatively short periods. FIG. 5S - SETTING BASKET OF LONG-LINE GEAR FROM STERN OF MARJORIE PARKER. 6 COMMERCIAL FISHERIES REVIEW _Vol. 15, No. 7 GILL NETS AND TRAMMEL NETS: Sets were made with gill nets and trammel nets to test their fishing possibilities for bluefin tuna. Eleven linen and six nylon x ook , drift gill nets of four : mesh sizes were used; 12-, \ 13-, 14-, and 15-inch stretched mesh. The linen . nets were constructed of 16/5 thread, 24 to 30 meshes deep and 300 feet in length, hung 30 inches of stretched mesh to the foot. Cork and lead lines were of No. 261 thread medium cotton seine twine. Hanging line was No. 48 thread soft cotton seine twine. Oiled cedar floats, 6 inches long and 23 inches in diameter, were spacedon the cork line every 36 inches. Five-ounce leads, FIG. 6 - HAULING LONG LINE WITH JAPANESE-TYPE LINE HAULER. 3/16-inch split, were spaced THE MAIN LINE 1S AUTOMATICALLY COILED IN THE BASKET BELOW at one-fathom intervals on THE MAIN HAULING SHEAVE. re Nea seine. Goaseimems with a cutch compound imparted a brownish color to the nets. The nylon gill nets had dimensions identical to the linen gill nets. The netting was of No. 346 nylon twine, and was not treated with a preservative. Cork and lead lines were ¢-inch diameter nylon maitre cord. / Five trammel nets, 300 feet long and approximately 18 feet deep, were used. Two had an outer walling of 24-thread, medium laid, cotton-seine twine, 24-inch stretched measure, and inner netting of 20/12 fine yarn cotton twine, 10-inch stretched mesh. The other three nets had the same thread sizes with an outerwall- ing of 15-inch stretched mesh and inner netting of 5-inch stretched mesh. These nets were hung extra full in accordance with commercial practice, and were treated with a cutch compound. SURFACE-TROLLING GEAR: Seven trolling lines were towed while the vessel was under way; 3 from each of 2 trolling poles and one from the stern rail. This gear was patterned after that used in the North Pacific albacore fishery (Powell, Alverson, and Livingstone 1952). The twotrolling poles were of Douglas fir, 35 feet in length and tapering from 43 inches in diameter at the base to 1-7/8 inches at the tip, with a steel band and swivel enclosing the butt end. When not in use, the poles were raisedand lashed to the main rigging. Troll lines were of 261-thread, hard- laid, cotton-seine twine. Inboard lines on the poles were 15 fathoms in length, center lines were 20 fathoms, and the outer lines were 22fathoms long. Paired galvanizedsteel springs (placed between the poles and the FIG. 7 = SETTING TRAMMEL NETS NEAR BOON ISLAND, MAINE, JULY 1952. July 1953 COMMERCIAL FISHERIES REVIEW 7 lines) and trolling rubbers (spliced into the lines about 10 fathoms from the poles) served as shock absorbers. Several types of trolling jigs were used throughout the season, including white, yellow, and red double-hook "bone" jigs; black wooden jigs; green and red plastic squids; and lead jigs with red and white feathers. FISHING AND SCOUTING RESULTS Bluefin tuna production by Cape Cod Bay traps and pound nets during 1951 amounted to 779,000 pounds. Catches from the same area during 1952 amounted to F : 1 og 223,000 pounds, a decrease i j of 71 percent from the preceding year. State of Maine bluefin landings de- clined from a catch of 113,000 pounds in 1951 to 37,000 pounds in 1952. Catches elsewhere in the Gulf of Maine closely fol- lowed the same pattern, substantiating observations on surface schools of blue- fin tuna made by explora- tory fishing crews during 1951 and 1952 which indi- cated a much smaller stock present during the 1952 season. Surface schools sighted in 1952 were esti- FIG. 8 = OUTRIGGER POLE USED FOR SURFACE-TROLLING LINES. mated at 200 tons as com- pared to over 500 tons ob- served by the crew of the Western Explorer in 1951. It is believed that this ap- parent decline in available stocks materially affected the quantity and frequency of exploratory catches. if oom LONG-LINE CATCHES: During the survey period, 118 long-line sets were made. A record of these sets is presented in table 2. The bluefin tuna catch amounted to 311 fish with an estimated round weight of 12,000 pounds. Sizes ranged from 9 pounds to approximately 200 pounds per fish, with the average about 38 pounds (round weight). Best fishing of the season was experienced during July and August. Sets made between July 21 and August 10, using a total of 240 baskets of gear, resulted in a catch of 216 tuna; a fishing return of 12.8 fish per 100 hooks. The largest individual catch of the season occurred on July 23 when an overnight set of 20 baskets (140 hooks) produced 51 tuna with an estimated weight of 2,000 pounds. Tests with various lengths of float lines revealed that most of the catches were being made fairly near the surface. Also, the surface layer of warm water was found to be relatively shallow. Consequently the majority of sets were made with a minimum length of float line (about 3 feet). Sag in the main line obviously allowed some hooks to fish at depths near the thermocline. Practically all of the tuna were alive when removed from the hooks. Due to their liveliness, some difficulty was experienced in bringing the fish to gaffafter the branch line was brought alongside the vessel. Attempts to land the fish by lifting the branch line resulted in the loss of some fish, and gaffs had to beused. 8 COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 Long-line catches of bluefin tuna were made over an extensive area through- out the Gulf of Maine and in the coastal waters southeast of Cape Cod. Two ex- ceptionally productive fishing areas were found within the Gulf of Maine. 1. East of Cape Cod--grounds situated 11 to 26 miles east by north of Chatham Light, near the southern tip of Cape Cod. This was the most productive of all areas fished, yielding the highest poundage and some of the best sets of the season. Dur- ing July and August 103 tuna, averaging 40 pounds each, were taken here. 2. Wild Cat Ridge--a small fishing bank lying between the 50-and 100-fathom curves, 28 to 40 miles east southeast of Hastern Point Light. Very good catches were made in this area during early August. Sets with 48 baskets of gear (336 hooks) caught 96 tuna (3,325 pounds). Late-season fishing on the same bank resulted incatches averaging 4.7 tuna per 100 hooks. Pee be ces are roeuesree ATEN AE Newfound Ground, off the southwestern Nova Scotian coast, was fished during the first week of September. A 10-basket set produced 9 tuna. Sets in the same general area later in the month proved unproductive. FIG. 9 - MASTHEAD LOOKOUTS ON WATCH FOR Sets made near surface indications of UNAS CHOOCS.. tuna usually resulted in good catches. Blind sets occasionally resulted in good catches; however, over the season the average catch was much lower in areas where no tuna were seen at the surface. An important factor affecting tuna long-line fishing is the great number of sharks present in New England waters during the summer, especially in August and September. The most numerous species encountered was the blue shark (Prionace lauca). The cumulative catch of this species amounted to twice the total tuna catch. Sand sharks and mackerel sharks were caught in lesser numbers. In addition to affecting the fishing potential of the long-line gear by foul- ing lines and reducing the number of hooks available for tuna. sharks attacked and laceratedmany hooked fish. : Shark catches from over- night sets weremuch larger _ than those from daylight r ' r > operations. Basedon American fish- ing standards, the June- October averageof 3.7 tuna per 100 hooks’ seems to be too lowa returnfor profit- | able operation. However, 1e e peak o pe Che cnet a auie e f FIG. 10 = TUNA SCHOOLS--DARK STREAK IN BACKGROUND SIGHTED OFF the season (July and August) EASTERN POINT, MASS., IN AUGUST 1952. \ July 1953 COMMERCIAL FISHERIES REVIEW 9 averaged 7.2 tuna per 100 hooks on sets of approximately 4 hours' duration, and individual sets ranged as high as 46 tuna per 100 hooks. A monthly summary of Table 1 = Monthly Summary of Exploratory Long-Line Fishing by the Marjorie Parker, 1952 Season nye SOtS — NUMDEr .. ccccccccccccccccccccccrvcccccccce Average number of hours per SOb eeecsccencccccece Hooks - total number fished ...c.ccrcrsccccvsccces Hooks - percentage fished por month ..cccccsccees Hook-hours fished - total ....cccccccccccsccccces Hook-hours - percentage fished per month ...eceo. Muna canchit) —eNUMDeS Mi srelelslcielelelsle’alelelsleleleleleloleielelele(siele Tuna caught - percentage caught per month ....... Tuna caught per 100 hooks — number .ececccccccces Tuna caught per hook-hour ..ccccccccecccrcvecccsee caught — number cecccecooce - percentage caught per month ....c.ccore. caught per 100 hooks —- number ......cceeee bi DOT NOOK—-NHOUT! Kiclelcisieisisle clelsiclelclelslclelole the season's results are presented in table 1. Concentration of fishing effort to coincide with the seasonal periods of greatest availability of bluefin tuna, dis- covery of additional productive fishing areas, and improvements in long-line gear design and operation should measurably increase the present catch return. FIG. 11 = BLUEFIN TUNA ON DECK DURING FIG. 12 = AFTER DECK OF MARJORIE PARKER HAULING OF LONG LINE. WITH PORT!ON OF LONG=-LINE CATCH. 10 COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 GILL-NET AND TRAMMEL-NET CATCHES: With one exception, all gill- and trammel- net sets were made at night following the daytime long-line activities. Bothgill and trammel nets were set in one continuous string using 3 to § nets. Some sets were made using only trammel nets. Following attachment of buoys and lights, the nets were set over the sternrail and allowed to drift clear of the vessel until daylight. The 16 sets’made during the season failed to catch tuna. Small quantities of herring, mackerel, dogfish and other shark, and on one occasion a porpoise were caught in the trammel nets. A record of the gill- and trammel-net sets is presented in table 3. All sets were made without visual signs of tuna except on July 23 when a set of 3 trammel nets and 2 gill nets was made in the immediate vicinity of schooling tuna. This set was un- productive. TROLL CATCHES: Catches on the trolling lines were very poor. Only six bluefin and three little tuna (Eu- 4 thynnus alletteratus) were caught throughout the entire season. WATER TEMPERATURES: Surface-temperature (507) and bathythermograph (50) recordings were made during the survey period. Subsurface water temperatures area major factor in determining the operational depth of long-—line gear. Data based on the development of long-line fishing by Asiatic fishermen show that where water currents of different temperatures are present at subsurface levels, the colder water may act as a barrier which the tuna hes- eM MPI CN ionic itate to enter. Favorable fishing conditions are as a LINE. THE CATCH OF SHARKS rule found near the thermocline or dividing line between WAS TWICE THAT OF TUNA. the relatively warm surface waters and cooler underlying waters (Shapiro 1950). Bathythermograph recordings made during the 1952 operations showed the thermocline at approximately 90 feet in waters exceeding 75 fathomsdeep. Il | PERCENTAGE OF TOTAL HOOK-HOURS FISHED. PERCENTAGE OF TOTAL TUNA CATCH. PERCENTAGE OF TOTAL SHARK CATCH. » is} o 3) be D a4 AUGUST SEPTEMBER OCTOBER FIG. 14 - MONTHLY DISTRIBUTION OF LONG-LINE FISHING AND CATCH, 1952. July 1953 COMMERCIAL FISHERIES REVIEW alal In shallower water the thermocline was generally found at depths of 50 to 75 feet. This relatively shallow layer of warm water ppesumabiy: keeps the tuna fairly closeto thesurface in the Gulf of Maine. Seasonal occurrence of warm water closely co- incides with the arrival andduration of tuna schools off New England. The low- est surface temperature in which tuna were caught was 59° F. Above this temper- ature catches showeda very close correlation with ef- fort. SOME ADVANTAGES OF LONG FIG. 15 = HAULING IN THE NYLON GILL NETS. LINE FISHING FOR TUNA: “While catch results from this season's work were not high, the 1952 experiments nts disclosed some special advantages in long-line gear for Gulf of Maine bluefin-tuna fishing. Practically all the small and medium fishing boats now operating in the New England trawl and seine fisheries are suitable for long-line fishing. Conversion of these boats into long-liners would be simple and com- paratively inexpensive. A long-line hauler would bethe only additional mechanical equipment required. The moderate cost of gear procurement and mainten- ance, and low operational expenses of small and medium boats are distinct advantages. Materials for fabrication of ‘one basket of gear cost approximately $35. The line hauler and side roller represent the only other perman- ent equipment needed, and these can be installed without making major changes in deck gear and machinery. Under normal conditions long-line gear should serve for a min- imum of four tuna seasons. Costs of seasonal gear main- tenance should be approximately 10 percent of the total value of the gear operated. Long-line fishing operations can be carried out under rather severe weather conditions. Fishing was conducted in rough weather with winds up to 30 m. p. h. When sur- face conditions preclude visual observations of tuna schools, fair fishing returns can be achieved under con- ditions which would prevent purse seining or other types of fishing. Potentially valuable fishing grounds were found within a distance of 30 miles from land. This distance lies within the usual operational orbit of small fishing craft based at New England ports. A long-line fishery farther offshore would require larger boats similar to FIG. 16 - MAKING A BATHY- : ; , THERMOGRAPH CAST, JUNE the type now used in the otter-trawling and scallop fish- 1952. ery on the outer Gulf of Maine fishing banks. COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 LOG OF FISHING TRIPS (CONDENSED) TRIP 1: June 2-5: Left Portland, Maine, for Provincetown, Massachusetts, to pick up frozen bait. Proceeded to Hudson Canyon, approximately 80 miles southeast of Ambrose Channel Lightship. June 6-8: Long-line sets in Hudson Canyonarea unproductive. A series of long-line sets off Cape May, New Jersey, and Block Island, Rhode Island, un- productive. June 9-13: Long-line sets made in South Chan- nel, between Georges Bank and Cape Cod; off Race Point, Cape Cod; Ipswich Bay, Massachusetts, and Boon Island, Maine. No tuna caught. Summary of Trip: Bluefin tuna were not sighted on the trip. Long-line and surface-trolling gear were not successful in capturing tuna. TRIP 2: June 17-19: Long-line sets and an overnight gill-net and trammel-net set east of Port- land, near Halfway Rock. No tuna caught. June 20-23: Gill nets and surface-trolling gear worked in the Boon Island-Isle of Shoals area. No tuna caught. June 24: Proceeded to New York and picked up 40 baskets of Japanese long-line gearand line hauler. One set made east of Fire Island, New York. June 25-29: Long-line fishing conducted south- east of Nantucket Lightship, Georges Bank, and on Stellwagen Bank in Massachusetts Bay. No tunacaught. June 30: One set on Sewell Ridge, about 50 miles southeast of Cashes Ledge Buoy. Returned to Portland. Summary of Trip: Sets were made without dif- ficulty and the Japanese gear worked smoothly. Blue- fin tuna were not observed on the trip and fishing operations failed to catch tuna. Surface tempera- tures ranged from 61° F, to 71° F. TRIP 3: July 5: Received report of school tuna observed off Halfway Rock, Maine, by local fish- ermen. A combined gill- and trammel-net sect made in the area proved unsuccessful. July 6-9: Long-line fishing conducted onsouth-| western Georges Bank, South Channel, Cashes Ledge, Stellwagen Bank, and York Ledges, Maine. No tuna caught. July 10-13: Trammel-net operations at night in Cape Cod Bay and Ipswich Bay. Trolling operations conducted from Boon Island, Maine, to Eastern Point, | Massachusetts, during daytime. July 14: Sighted small school of bluefin tuna near Portland Lightship. Troll lines failed to ob- tain strikes. No tuna caught on this trip. Julyl5 returned to port. Summary of Trip: First observations of school tuna noted. Surface water temperatures recorded from 4 to 6 degrees higher than those obtained dur- ing June. Comparison of Gulf of Maine surfacewater temperatures taken at corresponding dates and areas during the 1951 and 1952 season revealed that 1952 readings were from 1 to 4 degrees higher. TRIP 4: July 18-21: Long-line fishing in vi- cinity of "Tobins," approximately 60 miles southeast of Cape Cod Light. First bluefin tuna of season taken by long line on July 21. July 23: Proceeded inshore towards Cape Cod. Sighted school of tuna, estimated at 50 tons, 24 miles southeast by east of Peaked Hill Bar Buoy off Cape Cod Light. A four-hour set of 10 baskets of long-line gear produced 32 bluefin tuna, averaging 40 pounds (oad weight) each. An overnight set of 20 baskets in the same area resulted in a catch of 51 tuna of the same average size. Trammel nets set near surfacing fish were unsuccessful. July 24: School fish still in area. Sets of 10 and 5 baskets resulted in a total catch of 13 tuna. Catch of blue sharks on long line increased-- especially heavy during night sets. July 25: Contact with main body of fish lost although small schools of tuna were still visible. Set resulted in a catch of 6 tuna and 4 blue sharks. While standing by long-line gear, a successful at- tempt was made to bring schooling tuna alongside the vessel, using frozen herring and alewives for chun. Hand lines baited with frozen squid caught only four tuna. July 26 returned to port. Summary of Trip: A total of 105 bluefin tuna (3,800 pounds round weight) was captured in 8 long- line sets, employing 91 baskets of long-line gear. A total of 34 sharks were caught at the same time. Trammel-nst and surface-troll fishing caught notuna. Best fishing was found in an area 24 miles southeast by east of Peaked Hill Bar Buoy, Cape Cod Light, where 59 baskets of long-line gear caught 97 bluefin tuna. Surface water temperatures recorded ranged from 56° F. to 72° F. TRIP 5: August 1-6: Long-line fishing con- ducted in waters southeast of Cape Cod with poor re- sults. Thirteen sets produced 27 bluefin tuna and 53 blue sharks. Trammel-net fishing and surface trolling were also tried, but no tuna were caught. August 8-10: Long-line operations in waters from 30 to 40 miles east by south of Eastern Point Light, Massachusetts, caught 86 tuna and 28 sharks on 56 baskets of gear. All long-line sets were made without surface indications of tuna. Summary of Trip: Best results of the season | were achieved during this period when the majority of long-line sets proved successful in capturing tuna. Excellent fishing encountered in area approx- imately 30 miles east of Eastern Point Light. Long- line sets totaled 18, comprising 170 baskets of gear resulting in a catch of 113 bluefin tuna. Average round weight of fish was 32 pounds each, Surface water temperatures were consistently higher than those recorded on preceding trip, rang- ing from 63° F. to 70° F. TRIP 6: August 14: Departed Portland at noon. Set 10 baskets of long-line gear for 3 hours off Boon Island. No tuna and few sharks caught. Moved SW. to Eastern Point, Massachusetts. August 15; Completed 3 long-line sets in an area 30 miles SE. of Cape Ann Light. Results poor, July 1953 with catch of 4 tuna and 46 blue sharks, Trouble with line hauler necessitated return to Portland for repairs. August 17: Left Portland and proceeded S. by W. to Cape Cod. August 18: About 40 miles SE. of Cape Cod Light--2 bluefin tuna caught on troll lines. Set15 baskets of gear in:vicinity of troll catch andcaught 6 bluefin tuna and 10 blue sharks. August 19: Trolling on Northern Edge of Georges Bank. Set of 15 baskets of long line caught 3 tuna. Radio message from fishing trawler reported schools of tuna sighted on August 18 about 1, miles WSW. o* Mt. Desert Rock, Maine. Proceeded to position re- ported. August 20: Set 10 baskets at 0600 in area where tuna had been observed. Caught 1 tuna and 10 sharks. Moved NW. for 3 hours and set 8 baskets of gear for 3 hours. No tuna captured. Moved over- night to the southwest. Dragger Victory hand-lined 168 bluefin tuna on "Tobins" today. August 21: Troll lines caught 2 tuna while fishing E. by S.of Cape Ann Light. Completedtwo long- line sets during day and caught 43 blue sharks; no tuna. August 22: Made unsuccessful set of 10 baskets at daybreak off Cape Ann. Docked at Gloucester for supplies in early afternoon. Departed Gloucester at 1900, and set course for Cape Cod. Anchored for evening off Race Point, Cape Cod. Docked at Provincetown for shelter Departed at 2000 for August 23: from strong northwest winds. offshore fishing grounds. August 24: Completed 2 sets, 13 miles E. by N. of Chatham Buoy, Cape Cod, with poor results. Proceeded offshore at 2200 for"Tobins." Fresh north- west winds all day. Trolled for 7 hours without strikes. August 25: Completed 3 sets during day, catch- ing 17 tuna and 19 blue sharks in waters about 60 miles S. by E. of Cape Cod. Sharks mutilated 7 hooked tuna, including one estimated at 200 pounds. Hand-lined 2 tuna in afternoon. August 26: Three long-line sets produced 5 tuna and 8 sharks, Fishing trawler reported sight- ing school tuna near Pollock Rip Lightship, about 25 miles west of our position. Moved to position reported and set 10 baskets of gear at 1600. Caught 6 tuna and 8 sharks on 2-hour set. Trolled for 5 hours with no strikes. August 27: Made 3 long-line sets in same gen- erel area. Caught 4 tuna and 21 sharks. Trolled without success, August 28-29: Scouted area from Stellwagen Bank in Massachusetts Bay to Jeffreys Bank off Cape Ann. Four sets caught 4 bluefin tuna and 28 sharks, Docked at Portland at 2200 on the 29th. Summary of Trip: Catch of 56 bluefin tuna from long-line fishing--3 tuna caught on troll lines, 2 on hand lines. Catch of sharks four times greater than tuna. Operations conducted in four general COMMERCIAL FISHERIES REVIEW 13 areas: west southwest of Mt. Desert Light, southeast of Cape Ann and Cape Cod, and in the vicinity of Pollock Rip Lightship. School tuna observed onfour occasions between Cape Cod and Cape Ann, TRIP 7: September 8: Departed Boston for fish- ing grounds 50 miles southeast of Cape Cod. September 9-10: Night set of 20 baskets re- sulted in a catch of 44 blue sharks and 2 bluefin tuna. Completed 6 sets with a total catch of 12 tuna and 86 sharks. September 11-13: Cruised in area between Cape Ann and Baileys Island, Maine, operating troll lines and conducting long-line fishing over a wide area. Results poor in all areas fished-~-shark catches re- mained high, but tuna were scarce. Completed 6 sets--catch totaled 4 tuna and 41 sharks. September 14-16: Refueled and loaded supplies at Portland. September 17: School tuna reported in vicin- ity of Portland Lightship. Overnight set of 3 trammel nets proved unproductive. Set 10 baskets of long-line gear in same area and caught 24 blue sharks. Another set of 10 baskets near BoonIsland was unsuccessful in capturing tuna. Moved to Race Point, Cape Cod. September 18-19: lLong-line fishing off Cape Cod caught 2 tuna, Proceeded to Provincetown for shelter. September 20-22: Left Provincetown. Proceed- ed through Cape Cod Canal and resumed long-line fishing south of No Mans Land. Sighted small schools of tuna in area--3 tuna with an average weight of 9 pounds each caught on long line. September 23: Long-line set off Chatham, Mas- sachusetts, unsuccessful. Weather bad--proceeded to Boston for shelter and supplies. Summary of Trip: Long-line fishing and one trammel-net set conducted between Portland Light- ship and No Mans Land with poor results. Only two small schools of tuna were sighted during the trip. Blue snark catches remained high. Surface water temperatures lower than those recorded in August and early September, A total of 21 long-line sets, comprising 188 baskets of gear, caught 22 bluefin tuna and 214 blue. sharks. TRIP 8: September 27: Left Boston and pro- ceeded to South Channel fishing area, between Georges Bank and Cape Cod. September 28: Long-line fishing and surface troll operations conducted in South Channel about 50 miles southeast of Cape Cod shore. Twenty four sharxs caught on 3 long-line sets. Trolling oper- ations unproductive. Proceeded east during evening to Browns Bank. September 29-30: Series of long-line sets made on Browns Bank and Seal Island Ground near Nova Scotian coast. Strong tides encountered in both locations caused difficulty in setting and hauling gear. Four tuna and several sharks were avenue Water temperatures ranged from 50° F. to Doms Sertember 30-October 2: Resumed long-line fish- ing in general area of Cashes Ledge and southwest to edge of Georges Bank. weather poor with strong southeast winds and periods of heavy fog. No tuna returns from 7 long-line sets. Negative results from troll fishing. Shark catch high during this period, October 3: Docked Portland. A total of 5,230 pounds of blue sharks sold to fish meal and oil proc- essor. Summary of Trip: Only 4 tuna caught. Sharks very abundant. No schools of tuna observed. TRIF 9: October 7-8: Departed Portland and proceeded to New York coastal waters south of Am- brose Channel Lightship. October 9: Made 3-hour set of 10 baskets of long Line on Cholera Bank (approximate position 4,0°24' N. latitude 73°22' w. longitude) with nega- tive results. Ran inshore towards New Jersey coast-- troll lines caught 3 little tuna (Euthynnus allet- teratus). Set of long line near site of troll catch proved unproductive. weather bad; strong northeast winds in late afternoon. October 10: Northeast winds of force & veloc- ity. Docked at Cape May, New Jersey, for shelter. October 12: Left Cape May at 0700. Made long- line set 35 miles ENE. of Five Fathom Bank Light- ship--no fish. Trolled to the northeast and set 7 trammel nets for overnight fishing at 1800. October 13: Hauled trammel nets at daybreak. Small quantity of mackerel in nets. Continued course to the northeast--trolling lires out; no strikes. Strong northeast winds. Anchored for night aporoximately 12 miles southeast of Ambrose Channel Lightship. Octokter 14-16: Worked area 15-20 miles off Long Island coest from point 12 miles southeast of COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 Ambrose Channel Lightship to vicinity of Block Is- land, using long-line and troll fishing during day and gill- and trammel-net fishing at night. Leng- line fishing results negative. Troll lines caught 1 bluefin tuna weighing 20 pounds. Series of 3com- bination gill- and trammel-net sets caught small quentities of fish, including 3 common bonito, 4 bluefish, 32 chub mackerel, 226 menhaden, 2 blue sharks, and 1 porpoise. October 17-18: Completed unsuccessful tramsel- net set 10 miles southeast of Block Island. Trolled to entrance of Cape Cod Canal without obtaining strikes. Docked Portland for supplies on the 19th. weather delayed resumption of cruise. October 23: Departed Portland forCashes Ledge. October 24: Strong northwest winds all daypre- vented fishing operations. Han inshore and anchored off mace Point, Cape Cod. October 25: Docked Provincetown for shelter. October 26: Weather improved. Left Province- town for offshore Cape Cod waters. Set 17 beskets of long line 12 miles E. by S. of Chatham Buoy, Cape Cod--no tuna; few blue sharks. Wind increased, Ran northwest in Massachusetts Bay. Anchored for night near Stellwagen Bank. Proceeded to Fishing operations ter- October 27: Weather still bad. Boston and docked at 0930. minated for the season. Summary of Trip: No bluefin tuna caught on long-line gear. One caught on trolling lines. weather was unfavorable during most of the trip. Scouting and long-line fishing operations conducted off New York and New Jersey coasts were unsuccess- ful in locating or capturing bluefin tuna. Troll lines caught 3 little tuna and small schools ofthis species were observed off the Long Islanc coast. Ex- verienced worst weather of season duringthis period. LITERATURE CITED J. REPORT ON 1951 MURRAY, Je 1952. EXPLORATORY BULEFIN TUNA FISHING IN THE GULF OF MAINE. COMMERCIAL FISHERIES REVIEW, VOL. 14, NO. 3 (MARCH 1952)--ALSO SEPARATE 309. POWELL, D. 1950. E.; ALVERSON, D. L.; AND LIVINGSTONE, R. JR. NORTH PACIFIC ALBACORE TUNA EXPLORATION--1950, U. S. FISH AND WILDLIFE SERVICE, FISHERY LEAFLET 402 (APRIL), WASHINGTON, D. C. SHAPIRO, SIDNEY 1950. THE JAPANESE LONG=LINE FISHERY FOR TUNAS. U. S. FISH AND WILDLIFE SERVICE, FISHERY LEAFLET 317 (NOVEMBER), WASHINGTON, D. C. NOTE: FOR TABLES 2 AND 3, SEE PAGES 15-17. July 1953 COMMERCIAL FISHERIES REVIEW 15 | Table _2 = Record of Exploratory Long-Line Sets by the Mario ker, June-October 1952 Set Numbe "| Number Length | Time |Lengt Surface Wate catch __| ti ae Stone of pent/ fo Peas Ses Ne Shark Hooks Lines |Set | (Hours) ae of Fish) 32 w an PP o ° o GPOOrFFrFO foMoMo Moo Nome Rooke nononononon omen on—) meparoborunan WPOCQOCOrFCOOMON (0) (0) ) 0) (0) 1 1 (0) 1 8 1 (a) 32 5 51 10 7 i 6 6 6 4 Aug. a 3 66° 5 15 1 3.5 67° 1 10 2 4 65° 5 3 2 265 630 3 5 3 NS 3" 0700] 6 66° 7 (a) 3 A, S SA SON tas 5 66° 1 0 4 Ss 3" |0730| 3 66° ) 0 5 Ss} 3" |1400] 3 66° 5 1 5 s 30" |1830] 3 68° (0) 6 6 Ss 3t jo900] 2 69° (0) 6 6 s 60" {1400} 3 70° ) 2 7 Ss 3" 11000| 3 66° ) 1 7 s 30* |1630] 3.5 65° 0) 4 8 s 3* |1300)] 2.5 68° 26 6 8 IS 60" 1740] 2 64° 2 at 9 s 3" |0730] 4 65° 35 4 9 Ss 3' 11430] 4.5 65° 14 10 10 Ss 3' 10645] 4 64° 9 7 49 14 S} 3' 11640] 3 68° (0) 6 50 15 s 3" |o640}] 2 66° 2 25 51 15 s 3* |1300} 2.5 67° 0) 6 52 15 s 3" |1800] 2 67° 2 15 53 18 Ss 3" 10830] 3 68° 6 10 54 18 s SY L640) 3 70° 6 10 55 19 S 3" 1100] 3 64° 2 6 56 19 S 3" 11800] 2 66° 1 5 57 20 s 3! 10700 | -3 649 i 10 58 20 eS 3* 11450] 3 58° 1 0 59 21 A, S 3" 0830] 3 68° 0) 18 60 21 Ss 3* |1700} 2.5 66° (@) 25 (TASLE 2 CONTINUED ON NEXT PAGE ) 16 COMMERCIAL FISHERIES REVIEW CRISS Whey 4 2 (Contd) | Length — “Lengt any [Surface Wwater|_Catch _| ee of Float] of of a rere a Shark Lines |Set | (Hour iB (No. of Fish 70009! 70910! 69°33! 69°25! 69°30! 69°30" 69°28" 69°00! 69°05! 69°12! 69°12 69925! 699298 70°05! 70°02" 70°00! 70°01! ° oO e e oO o b be AUNIpPOONHRNONYNOO® rR PNUNNEFNWONRFWHONNEPUANNN AD oo OPNVEFEFNFOFROUNROOFO 5 rPWwONE DW e ° oO DCOONOKFFOONDONDDOFPOORPNRFPNNFANOYD 0) 2 at 2 2 4 1 2 5 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 PE PNANrFUOP PL RO WANnDNNnNNANnNHNHHnNNMN WNNUANNNNNNNWND ecooOoOCoCoCoCooodo AMNOODOWOOVFRPAYW td n ol y ALEWIVES, H HERRING, M MACKEREL, P MENHADEN, AND S_— SQUID. THE FIRST 13 SETS AND THE LAST SET WERE WITH LOCALLY =MADE LONG=LINE GEAR. THE REMAINDER WERE MADE WITH JAPANESE LONG-LINE GEAR. July 1953 COMMERCIAL FISHERIES REVIEW Aly/ Tm) ang ammne t—N © evs Surface Water} Wind Temperature | Direction Cans and Force 20 43°09! | 70°34" 52° NW. 3 Blank set 22 42°06! | 70°08! 61° W. 2 |Mackerel, 100 lbs. 23 4043! | 71°50! 61° SE. 4 |Blue shark 6 57° NE. 4 |Blank set 10 Mackerel, 50 lbs.; Herring, 30 lbs. Blank set Dogfish, 2,000 lbs.; Mackerel, 50 lbs. set set set set set " " Oct. {12 39915! | 73°40! 8 63° WSW. 4 |Mackerel, 20 lbs. "114 40°03" | 73°09! 62° SW. 3 |Mackerel, 100 lbs. uM 15 40°39! | 72°40! 62° SW. 2 Blank set "416 40°52! | 71950! 62° Nw. 4 |1 Porpoise; 2 Blue sharks NOTE: JULY 23 SET WAS MADE IN THE DAYTIME; ALY OTHER SETS WERE MADE AT NIGHT (FROM DUSK TO DAWN) . we PRELIMINARY REVIEW OF THE FISHERIES OF THE UNITED STATES AND ALASKA, 1952 Commercial Fisheries, gives preliminary 1952 estimates for the fishing industry with comparative data for earlier years. For those phases of the industry for which preliminary estimates are not available, the most recent information is listed. The publication includes United States and Alaska fish production 1929-1952; catch by states, principal species, gear, and months; and land- ings of fishery products at leading U. S. fishery ports. There is also information on craft, employment, and shore establishments; manufactured fishery products; per-capita consumption; and value of the fisheries for 1951 and 1952. Average wholesale price indexes for fish and shellfish are given for December 1951 and 1952. Included is a retail price index for foods and finfish for December 15, 1952, with comparative data. For- eign fishery trade and available supply of certain fishery items are pre- sented in this 20-page publication. A flow chart of the commercial fish- eries for 1952 is also included. Copies of Fishery Leaflet 393 are available free upon request from the Division of Information, U. S. Fish and Wildlife Service, Washington 25, De Co 18 COMMERCIAL FISHERIES REVIEW Weals 2535 Wes \7/ RESEARCH 7 IN SERVICE LABORATORIES iw perieteeiah on Bodeiera! June 1953 REFRIGERATION: Freezing Fish at Sea, Defrosting, Filleting, and Refreezing the Fillets: LABORATORY STUDIES: Tables 1 and 2 contain data on the effect of Table 1 - Effect of Variation in Immersion Time on Scrod Haddock Fillets Dipped in Brine (10 percent salt, by weight Characteristics of the Dipped Fillets Weight |Salt (NaCl)| Free Press |Tenderomete piel ee Content Drip Drip Reading Table 2 - Effect of Variation in Immersion ime and Brine Concentration on Salt Content nf. Scrod Haddock Fillets Brine, by weight| Immersedin Brine| of Fillets Percent 5 10 A/DATA FROM A PREVIOUS W256 extended brine immersion periods on scrod haddock fillets. Further data were obtained onthe changes occurringin round scrod haddock immersed in refrigerated brine for extended periods. The effect on salt and moisture content of the surface layers of the fish are shown in table 3. able 3 - Moisture and Salt Content of the Surface Layers of Round Scrod Haddock Immersed in Cold Brine. (Brine temperature: 5° F.; con content of brine: 23 Ls PSUR aaa percent sodium chloride Time Whole Scrod [Characteristics of the Surface TS rers of the Haddock Flesh_ Haddock Immersed in se fics it tek Brine Moisture Salt (NaCl) | Moisture | Salt (NaCl) | cme ptreNare lie jG ° OD eS P= ee Pu hu o SO} Percent 1.39 3.57 5.64 8.98 10.7 VESSEL OPERATION: The research trawler Delaware was readied for fishing op- erations. The first cruise is under way, at which time the new brine-freezer mech- anism will be tested. (Boston) HEH UHR July 1953 COMMERCIAL FISHERIES REVIEW 19 Freezing, Glazing, and Thawing Salmon to be Canned: Analysis for salt con- tent of the various experimental and commercial samples was completed. The data follow: Salt Content of Canned Alaska Red Species of Canned |Treatment of Raw Material Salmon Brine-frozen; thawed in running tap water ai ron Brine-frozen; thawed in s- 1.94 still water 83 Salmon Prepared from Brine-Frozen Fish Can |Amount of [Number [Salt (NaCl) Con-_ Salt Added | of Cans|tent of the Canned to Each Can ampled|Salmon (Average Grams Percent 1.66 if) N oO Ky wir Ed pr lon e Hy 0% we t+ Olct e Brine-frozen; thawed in 5-lb. aL air EF ial Be (dissolved in 18 ml. of water) rR Brine-frozen; thawed in saturated brine (NaCl) _ Bd Bee (sockeye) Brine-frozen; thawed in running tap water Fivesh (uot frosen) tien [Fist fresh (not frozen) fish Flat Brine-frozen; held in dry stor-}4_ age until packed commercially Brine-frozen; held in the re- frigerated brine for 2 weeks before packed commerciall Brine-frozen; held in the refrigerated brine for 2 weeks before packed Brine-frozen, held in the refrigerated brine for 2 weeks before packed A/COMMERCIAL PACKING INCLUDES ABOUT 1/8 OUNCE B/AMOUNT OF SALT ADDED WAS NOT KNOWN. iG ° Fy 7) ct 3.54 GRAMS) OF SALT PER 1/2=LB. FLAT CAN. PRESERVED WHALE WILL NOT BE EXHIBITED IN UNITED STATES The famous "Mrs. Haroy," an embalmed 70-ton fin whale, which arrived in the United States in April for an extended tour, will not be exhibited as planned. The Danish owner has announced that since he was not success- ful in making arrangements to exhibit the whale in the United States, he has decided to return to Denmark with the whale. Loaded on a specially built railroad flatcar, the whale was waiting at Weehawkin, N. J., to start her tour. The owner states that the spe- cially-preserved whale prior to its shipment to the United States had been shown to 3,500,000 Europeans. NOTE: SEE COMMERCIAL FISHERIES REVIEW, JUNE 1953, P. 40. 20 ’ COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 TECHNICAL NOTE NO. 27--ALASKA POLLOCK: PROXIMATE COMPOSITION; AMINO ACID, THIAMINE, AND RIBOFLAVIN CONTENT; USE AS MINK FEED With the scarcity of flounder (Pleuronectidae) in the vicinity of Petersburg, Alaska, during the fall and spring of 1952, the commercial fur farmers of thatarea resorted to the use of Alaska pollock (Theragra chalcogramma) for mink feed. Since pollock had never been fed in large quantities previously in the Petersburg area, the Fishery Products Laboratory was requested to determine the composition of representative samples of this species of fish and of typical mink feeding ra- tions prepared from this fish. The proximate composition and "essential" amino acid, thiamine, and riboflavin content of Alaska pollock were determined. Data for flounder are given for com- ALASKA POLLOCK ( THERAGRA CHALCOGRAMMA ) parison since this species of fish is considered to be suitable for mink feed by most Alaska fur farmers. The proximate composition of various pollock mink rations and a typical flounder ration is also reported. Data onthe "essential" aminoacid content of beef liver, an accepted animal feed, and of salmon eggs are given as a comparative index to the quality of the fish protein. EXPERIMENTAL PROCEDURES: Two 50-pound blocks of frozen whole (round) pollock, representative of that being fed at Petersburg during the spring and fall of 1952, were sent to the Laboratory for analysis. The fish were from 15 to 23 inches in over-all length and averaged 1-3/4 pounds in weight. Samples of the frozen whole pollock were prepared as follows: Each whole fish was cut into 8 or 10 pieces. The pieces were passed twice through an electric grinder having a 3/16-inch plate. Representative samples of the ground material were sealed in 1/2-pound cans, frozen, and stored at 0° F. until needed for analysis. Samples of eviscerated pollock, pollock fillets, and pollock fillet-waste were pre- pared in a similar manner. Analyses for ash, moisture, and protein were made accordingto modified Methods of Analysis of the Association of Official Agricultural Chemists.(1950). Oil con- July 1953 COMMERCIAL FISHERIES REVIEW 21 modified by Voth (1946). Assays for the "essential" amino acids were made accord- ing to the microbiological procedure of Henderson and Snell (1948). Thiamine (vitamin B]) and riboflavin (vitamin Bo) were determined by fluorometric methods given in Methods of Vitamin Assay (1947). DISCUSSION OF RESULTS: The results are given in the following tables: Table 1 — Proximate Composition of Alaska Polloc Sample Description Blelncleleicieicnicaae a. GPercent) POVOck WhOV!! crsrejsiays crsssieusscnsas,« sfe'||! ded Pollock, eviscerated ........66-] 7902 POWocks: MaisleGS vejicieislsteleiecieielercien|| ose Pollock, fillet waste .......... Flounder eviscerated2/ nobododn W THE PROXIMATE COMPOSITION DATA ARE TYPICAL FOR THE SIZES OF FISH CAUGHT DURING THE SPRING AND FALL OF 1952 AT PETERSBURG, ALASKA, AND MAY NOT BE APPLICABLE TO LARGER FISH OR FISH FROM OTHER AREAS. 2/THE PROXIMATE COMPOSIT{ON OF FLOUNDER IS GIVEN FOR COMPARISON. THE DATA ARE FROM THE AN@ aers!s OF A eo ti SAUCE OF A EOUNDER FED AT THE U. Se De Ao EXPERIMENTAL FUR STA 719.7 Table 2 - Eroximate Composition: of! Pollock Mink Rations _ Sample Descriptio @oeoeeseoeceoeveoecoece (Percent ) eececesresececreresceee Pollock Mink Ration, 2eL Pollock Mink Ration, B3/ hel ollock Mink Ration, 3/ 364 ollock Mink Ration, s/ 20h lounder Mink Ration4+t 30k 1/ALL FISH WERE EVISCERATED FOR PREPARATION OF POLLOCK AND FLOUNDER RATIONS. THE SAMPLES WERE TAKEN BY THE FUR FARMER. A ONE=POUND SAMPLE WAS TAKEN EACH DAY FOR ONE WEEK AS THE FEED WAS MIXED. THE SEVEN SAMPLES OF EACH RATION RECEIVED BY THE LABORATORY WERE GROUND TOGETHER, REPRESENTATIVE SAMPLES WERE THEN TAKEN, SEALED IN 1/2-POUND CANS, FROZEN, STORED AT O « UNTIL NEEDED FOR ANALYSIS. |2/ CARBOHYDRATE BY DIFFERENCE. I3/ POLLOCK RATIONS A, B, C, AND D ARE THE WHOLE RATIONS AS FED BY DIFFERENT FUR FARMERS IN THE PETERSBURG AREA” AND SHOW THE VARIATION IN RATIONS FROM FARM TO FARM. THE DATA ARE TYPICAL FOR RATIONS IN WHICH POLLOCK OF THE SIZE CAUGHT DURING THE SPRING AND FALL OF 1952 AT PETERSBURG ARE FED. 4/THE FLOUNDER RATION [S GIVEN FOR COMPARISON. IT WAS USED AT THE U. Se De A. EXPERIMENTAL ge and Animal Liver Amino Acid Content of the Protein (NX 6.25) ——si Isoleu- |{Leu- Ear erat Phenyl-|Threo- a ead nine dine cine cine|sine| nine alanine| nine |phane_|line Aoysecerated) Salmon eges, RO MN a ee + Ale a Oa Es a COMMERCIAL FISHERIES REVIEW 75 —— Brat, (a 0 owe eT tans BS: Recent publications of interest tothe commercial fishing industry are listed FISH AND WILDLIFE SERVICE PUBLICATIONS THESE PROCESSED PUBLICATIONS ARE AVAILABLE FREE FROM THE DIVISION OF INFORMATION, U. S. FISH AND WILDLIFE SERVICE, WASH- INGTON 25, D. C. TYPES OF PUBLICATIONS ARE DESIGNATED AS FOLLOWS: CFS - CURRENT FISHERY STATISTICS OF THE UNITED STATES SSR.-FISH. - SPECIAL SCIENTIFIC REPORTS--FISHERIES SEP.- SEPARATES (REPRINTS) FROM COMMERCIAL FISHERIES below. AND ALASKA. FL = FISHERY LEAFLETS. (LIMITED DISTRIBUTION). REVIEW. Number Title CFS-872 — Frozen Fish Report, May 1953, 8 p. CFS-877 -— Massachusetts Landings, 1952, Annual Summary, 15 p. CFS-878 — Fish Meal and Oil, April 1953, 2 p. CFS-879 - Florida Landings, March 1953, 6 p. CFS-881 -— New Jersey Landings, April 1953, 2 p. CFS-884 - Mississippi Landings, April 1953, 2 pe CFS-885 - Maine Landings, April 1953, 4 p. CFS-887 — Florida Landings, April 1953, 6 p. CFS-888 — Texas Landings, May 1953, 3 pe CFS-889 — Imports and Exports, 1948-1952, Annual Summaries, 8 p. CFS-890 — Massachusetts Landings, March 1953, 8 p. FL -168 - Commercial Fishery Laws and Regulations (Revised), 7 pe Sep. No. 351 — Construction Details of Tuna Long- Line Gear Used by Pacific Oceanic Fishery Investigations. Sep. No. 352 — Oyster Growth as Affected by Lati- tudinal Temperature Gradients. SSR-Fish. No. 78 — Oceanographic Conditions and the Black Tuna Fishery, by Takeshi Kawana (Translat- ed from the Japanese language by Wilvan G, Van Campen), 34 pe, illus., processed, July 1952. Reports on observations concerning the fishing situation, habits, and oceanographic conditions. Original report in Japanese was published in1934. SSR-Fish. No. 90 — Experimental Surface Gill Net Fishing for Skipjack (Katsuwonus pelamis) in Ha- Waiian Waters, by Walter M. Matsumoto, 22 p., illus., processed, November 1952. Covers the trial of gill nets as a possible means of taking skipjack in commercial quantities without the use of bait. A surface gill net designed totake skipjack was fished experimentally in Hawaiian waters a total of 284 hours, of which 2333 hours were fished at night. Fishing was done only in the lee of the larger islands because of diffi- culty in handling the gear in rough water. How- ever, part of the experiment was performed inan area known to be a productive skipjack ground and during the known season of abundance of this spe-— cies. The total catch of 28 fish, of which only 6 were skipiack, showed a very poor catch per unit of effort. It is concluded from the results of this experiment that surface gill-netting shows little promise as a commercial fishing method for skipjack in Hawaiian waters. SSR-Fish. No. 91 - Reaction of Tunas and Other Fishes to Stimuli--1951, 88 p., illus., processed, Novem- ber 1952. (This report is also Contribution Nos. 22-26, Hawaii Marine Laboratory, University of Ha- waii.) This report is divided into five parts: Part I—Background and Summary of Results, by Al- bert L. Tester; Part II—Observations on the Chemo— reception of Tuna, by P. B. van Weel; Part IIlI— Observations on the Reaction of Tuna to Artificial Light, by Sidney C. Hsiao; Part IV—Observations on Sound Production and Response in Tura, by Iwao Miyake; and Part V—Notes on the Response of a Tropical Fish (Kuhlia sandvicensis) to Interrupt- ed Direct Current, by Albert L. Tester. In the study of chemoreception in tuna (Part II), it was found that both the yellowfin tuma (Neothunnus macropterus) and little tunny (Euthynnus yaito) have a well-developed sense of smell or taste where—- by they may be attracted to certain food substances. They were strongly attracted to clear, colorless extracts of tuna meat. Moreover, it was found that the attractant was contained in the "protein" rather than in the "fat" fraction of the clear extract. In general, the reactions of the tunny were more pronounced than those of the yellowfin. On the other hand, there was no positive reaction of ei- ther species to "conditioned" water in which bait fish had been living, nor, to extracts of either bait fish or squid. Two chemicals, other than food substances, were tried—-asparagine, a possible at— tractant; and copper acetate, a known shark repel— lent. The former did not prove to be an attract— ant. The latter was a repellent to tuna, although its effect was not as pronounced as on fish of oth- 76 er species which were also present in the tank, Part III describes the reaction of the tuna to artificial light generated from an are lamp, a projection lantern, and electric light bulbs. Experiments were performed after dark, with the tank illuminated constantly by two 60-watt bulbs. It was found that both yellowfin and tunny were attracted to continuous white light over arange of moderate intensity (about 70 to 450 foot-can- dles). However, they were not attracted by a light of weaker intensity, and theywere repelled by a light of stronger intensity. Both species were attracted to colored lights of moderate in- tensity, but to no greater extent than to white light. Similar results were obtained with in- terrupted white light. There appeared to be no relationship between the strength of the reac- tion and the frequency of interruption of the light. It was noted that although the tuna ap- proached an interrupted light of moderate inten- sity, they were repelled from the near vicinity at the instant the light flashed either on or off. Part IV describes an attempt to discover (1) if tuna produced any sound, and (2) if they could be attracted or repelled by sounds of var- ious frequencies. Using a listening frequency which ranged from about 100 cycles to 70 kilo— cycles per second, it was possible to identify low frequency sounds produced by the sudden move— ment of the tail of the yellowfin in the tank. This might have some significance in respect to the mechanism of school formation. No sounds pro- duced by the tuna at moderate, high, and super— sonic frequencies were detected. In attempting to attract or repel tuna by continuous sound stim— uli, sounds were produced at many frequencies with- in the 100 cycle to 70 kilocycle range. No pos— itive results were obtained. However, there were several indications that thetuna might react pos- itively to complex sounds of low frequency. Part V describes a study of the reaction of the ahole— hole or "mountain bass" (kuhlia sandvicensis) to interrupted direct current in a small wooden tank of sea water. It was found that by progressive shortening of the on-fraction of a cycle at afre— quency of 15 cycles per second the downward trend in average current necessary to attract the fish was continued. The relationship between source voltage and electrode size was also clarified. Part I discusses the background of the projects and summarizes the results. Georges Bank, 1947-51, by Ernest D. Premetz, 36 pe, processed, May 1953. Includes the results of port interviews for the years 1947 to 1951, and the samplings at sea for the year 1951. During the period 1947 to 1951, the annual destruction of undersized haddock on Georges Bank by the Bos- ton fleet alone averaged over 43 million pounds (based on skippers! estimates as reported to port interviewers). This quantity represented over 6 million individual fish. Most of the destruction occurred between the months of June and October during which time most of the 2=year—old fish, which were caught in great numbers, were under one pound in weight and ummarketable. The areas of great- est discard were the northern edge and southeast part. Areas of lesser destruction were the west— ern side and the southern end of South Channel. Areas of most intense discard coincided with areas of most intense fishing. During 1951, observers went to sea on seven commercial trips to analyze the catch, Skippers' estimates of pounds discard- COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 ed were found to be within 12 percent of estimates made by the Fish and Wildlife Service observers at sea. The size of fish discarded varies with the size of the catch. Smaller fish are saved when the catches are small. The 50-percent point on the average cull curve was 13-3/4 inches (0.9 pounds). Practically all fish of this size were 2 years old. The smaller fish discarded includ— ed many l-year-olds while the largest individuals in the discards included many 3-year-olds. SSR-Fish. No. 97 - Sea Lamprey Spawning: Wisconsin and Minnesota Streams of Lake Superior, by Howard A Loeb, 38 pe, illus., processed, June 1953. Lam— preys have been reported from the St. Louis, Suck= er, and Knife Rivers in Minnesota in recent years. Although actual spawning records are absent from both Minnesota and Wisconsin, the persistent and eneral increase in scarring of lake trout and other fish along both shorelines is an indication of actual utilization of the local streams for spawning purposes. Lampreys are occasionally taken by commercial fishermen of both States. As many as 10 percent of the fish in certaincatches have been scarred. It is likely that the sea lampreys which cause the scarring would attempt to use the local streams for spawning (unlessthe scarred fish migrated from the eastern portions of Lake Superior where large lamprey populations are known to exist). Many streams in Wisconsin appear to be suitable for sea-lamprey spawning. Minnesota streams appear to be generally less suitable. Nevertheless, at least 22 of the 156 streams examined along the north shore of Minne- sota are considered to be quite suitable for spawning, despite the fact that some of them con- tain barriers a short distance above the mouths or are subject to rapid fluctuations in water levels. The author believes that all of tife suitable streams in both Wisconsin and Minnesota and also those considered to be marginal should be rechecked in the future to determine the ac- tual extent of utilization by sea lampreys. (Re- checks of certain Michigan streams surveyed in 1950 have revealed a slight increase in the num- bers of nests present). From observations to date, it is believed that the streams of Wiscon- sin and Minnesota-(although less suitable than those in Michigan) can support spawning runs of considerable size. The 1952 survey of the streams of Wisconsin was inadequate insofar as it told little about the productive potentials of the streams, and nothing about the actual extent of utilization of the streams; little control work of any nature is possible in this area until a great deal more information is gained. SSR-Fish. No. 99 - Trial of Denil-type Fish Ladder on Pacific Salmon, by Leonard A. Fulton, Harold A, Gangmark, and Scott H. Bair, 18 p., illus., processed, May 1953. An experiment was designed to compare the effectiveness of the pool-type and Denil—type ladders as fish-passage devices. Ob— servations were made in a side-by-side installa— tion at Dryden Dam on the Wenatchee River approx— imately 17 miles above the confluence of the Wenatchee and Columbia Rivers... Interest in the Denil-type fish ladder constructed at the Herting power dam in Sweden led to the construction of a similar installation at Dryden Dam. Comparison of the Denil-type and pool-type ladders was fa- cilitated because it was possible to construct a Denil-type ladder in one-half of the existing pool— type ladder at Dryden Dam. During the actual time July 1953 that counting observations were conducted in 1949 and 1951, the Denil-type was preferred by fish utilizing the ladders. In110 hours45 minutes, 1,828 fishused the Denil-type ladder, and in 96 hours 55 minutes a totalof 226 fish were counted through the pool-type ladder. The Denil-type ladder at Dryden Dam occupies essentially the same amount of space as the pool-type ladder. There is, therfore, some advantage in the Denil construction in conservation of space, both from the standpoint of its narrowness and shorter length made possible by a steeper slope. It was concluded that because of the baffles and higher flume wall construction of the Denil-type ladder, there is mo sutstantial saving in cost of con- struction over the standard pool-type ladder. With regard to flow requirements, the data col- lected revealed that the Denil-type ladder pass-— ed a greater number of fish per second-foot of flow and required less attention. With only 40 percent more flow than in the pool-type ladder, the Denil-type was utilized by 89 percent of the fish counted through the ladders. Probably the most desirable feature of the Denil-type was the attraction flow it presented to fish. COMMERCIAL FISHERIES REVIEW 1 SSR-Fish. No. 100 - Zooplankton Volumes off the Pa- cific Coast, 1952, by the Staff of the South Pa- cific Fishery Investigations, 43 p., processed, May 1953. This report contains a record of the volumes of zooplankton taken on the survey cruis— es of the California Cooperative Sardine Research Program during 1952, along with information on the plankton hauls. SSR-Fish. .No. 102 - Pilchard Eggs and Larvae and Other Fish Larvae, Pacific Coast--1951, by Elbert H. Ahlstrom, 56 p., illus., processed, May 1953. This report containsthe results of quantitative sampling of pilchard (Sardinops caerulea) eggs and larvae off the west coast of California and Baja California during 1951. Although the collections were designed primarily to yield information on the distribution and abundance of pilchard eggs and larvae, information was also gathered on a number of other fishof present or potential com- mercial importance. Records are included of the larvae of Siete these: Woe anchovy (En- graulis mordax), jack mackerel (Trachurus sym- metricus), hake (Merluccius roductus), Pacific mackerel (Pneumatophorus diego), and rockfish (Sebastodes sp.). THE FOLLOWING SERVICE PUBLICATIONS ARE FOR SALE AND ARE AVAIL- A Contagious Disease of Salmon Possibly of Virus Origin, by R. R. Rucker, W. J. Whipple, J. R. Parvin, and C. A. Evans, Fishery Bulletin 76 (From Fishery Bulletin of the Fish and Wildlife Service, Volume 54), 15 p., illus., printed, 15 cents, 1953. A disease, possibly of virus origin, is described which affected blueback salmon and kokanee fingerlings (Oncorhynchus nerka), but did not infect fingerlings of the chinook salmon (0. tshawytscha), silver salmon (0. kisutch), or cut- throat trout (Salmo clarki clarki)! MISCELLANEOUS PUBLICATIONS LIFE SERVICE, BUT USUALLY MAY BE OBTAINED FROM THE AGENCIES ISSUING THEM. ON PRICES, "Australia's Tuna Industry," by Feter Knox, arti- cle, The Fishing News, March 14, 1953, no. 2082, pp. 9-10, illus., printed. The Fishing News, 9 Northinston Street, Gray's Inn Road, London, W. C. 1, England. Describes Australia's tuna industry and its great potentialities. Progress in the industry, methods of capture, and the growinz demand for tuna are also described. (Califernia) Forty-second Biennial Report of the Department of Fish and Game for the Years 1950- 1952, 187 p., illus., printed. California De- partment of Fish and Game, San Francisco, Calif., January 1953. This report covers the period during which the agency went through the transi- tion stage from a division of the Department of Natural Resources to full departmental status. Toward the end of the biennium the new depart- ment was i:ndergoing reorganization to a decen- tralized form of administration. Both of these changes are described. The report reviews the activities of the various branches of the De- partment in fostering the conservation of fish and game in California, summarizes the important Folicy statements of the Fish and Game Commis— sion, and descrites the legislative action af- CORRESPONDENCE REGARDING PUBLICATIONS THAT FOLLOW SHOULD BE ADDRESSED TO THE RESPECTIVE AGENCIES OR PUBLISHERS MENTIONED. IF READILY AVAILABLE, ARE SHOWN. DATA fecting fish and game. Among the reports includ- ed, that of the Bureau of Marine Fisheries dic— cusses the emmercial fisheries of Califor:iia—— salmon, bottom fish, sarcine, tuna, mack -rel, live- bait, abalone, crat, oyster, and clam. Also re- viewed is the work of California's research ves— sels and the statistical unit of the Bureau. Ma- rine fisheries statistics are included in an ap— pendix—total production of fishery products; land— ings (quantity and value) by species; status of cammercial fishing fleet by ports; and number of licensed commercial fishermen. Fish Cook Book, Fawcett Book 174, 144 p., illus., printed, 75 cents. Fawcett Publications, Inc., Greenwich, Conn. Contains 300 selected recipes for cooking fish and shellfish and general in— structions for baking, broiling, steaming, and poaching. Same U. S. Fish and Wildlife Service kitchen-tested recipes are included. (FAO) 1950-51 Yearbook of Fisheries Statistics (An- ruaire Statistique des Feches, Incluye un Suple- mento en Espanol), 307 p., printed in English and French), US33.50. Food and Agriculture Organiza— tion of the United Nations, Rame, Italy, 1953. 78 COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 THESE PUBLICATIONS ARE NOT AVAILABLE FROM THE FISH AND WILDLIFE SERVICE, BUT USUALLY MAY BE OBTAINED FROM THE AGENCIES ISSUING THEM. (Also available from Columbia University Press, International Documents Service, New York, N. ve) This is the third Yearbook to be prepared by the FAO Fisneries Division. It continues, re- vises, and expands the statistics whicn were pub- lished in the two earlier issues of 1947 and 1948-49. Information available as of July 31, 1952, is included. The statistical tables inthe first two Yearbooks were to a certain extent still in the experimental stage; this latest issue in- corporates the many suggestions received by FAO from the users of the preceding two volumes. Now that effective liaison has been established with a larger number of member countries, it has been possible to incorporate more comprehensive and up- to-date information. The first tables in the Yearbook (1-4) con- stitute the "Catch" section and present the a- vailable recorded and estimated figures for coun- try and continental totals, as well as catch sta- tistics for about 20 producing countries by major species groups. One table presents the catch of nine marine species groups by country. In this issue the national statistics by individual spe-— cies are not repeated as these are available through the specific national publications, In the second section, on "Utilization," one table shows how the catch was used in the major fish- ing countries in 1950 and 1951, while other tables provide data on the net product weight of the principal types of processed commodities prod— uced in the major producing countries in 1938 and 1947-51. The third section deals with external trade. The first series of tables are summaries showing imports and exports of each of the major commodity groups and of some selected items of primary importance, These summaries are follow- ed by detailed country tables for imports and exe ports, showing quantities and values for each of the principal items arranged by commodity groups, giving a breakdown of the quantities of each im- portant item by principal countries of origin or of destination. The fourth section, "Fishing Craft," provides national statistical tables on craft, broken down by categories characteristic of each country. FAO points out that at the present stage it is virtually impossible to pre- sent craft data in an internationally standard— ized form, but it hopes that the inclusion of these more detailed statistics on craft will en- courage the supply of fuller information which can be incorporated in future tables, This ap- plies equally to data dealing with fishermen and processing establishments, which it is hoped to incorporate in future issues. As a step towards éventual clarification, the current Yearbook provides, in the notes on species grours, on conversion factors, and on classification of external trade items, fairly detailed comments on classifications and defini- tions, Readers are referred to the nomenclature section contained in the 1948-49 Yearbook which listed scientific and common names by country as an aid to identifying the species referred to by local common names in the national landing tables. The FAO Yearbook of Fisheries Statistics is not intended to replace national publications; it is designed to suvplement 1ational sources by providing internationally comparable data, in summary form, with world and regional t>tals and commodity summaries as the necessary background material for the better utilization of the nation- al publications. Three principal sources of information pro- ‘vided the basis for the statistics presented: first, the various official publications on export and import statistics; second, the communications from a number of the governments to whom the 1948-19 Yearbook tables, and drafts for the new tables, were referred for comment and completion; third, the FAO Questionnaire: Preliminary Report on Land— ings and Utilization, which, with some revisions, has been circulated annually since 1946. The met— ric system is used, except in some of the national tables on craft statistics. Values are expressed in the national currencies shown in the original sources and in some cases have been rounded off. Time series are usually confined to the five post— war years, 1947-51, which, wherever possible, are compared with a prewar year, usually 1938. Ina few cases where no data were available for these years, other years have been selected. The calen— dar year is normally used; those few cases where the countries provided data for 12-month periods other than the calendar year are indicated by foot— notes. To aid Spanish-speaking readers in the use of the English-French tables, Spanish notes on the tables have been included. "FAO Fisheries Statistics," Reprint from Monthly Bul- letin of Agricultural Statistics and Economics, April 1953, 4 p. printed. Food and Agriculture Organization of the United Nations, Rame, Italy. Includes statistics on fish landings in 10 coun- tries in 1952 and external trade in fish and fish- eries products of 9 importing and 9 exporting coun— tries in 1952, compared with the corresponding pe- riod of 1951. (FAO) The Work of FAO 1951/52 (Report of the Director- General), 38 p., printed, US$1.00. Food and Agri- culture Organization of the United Nations, Rome, Italy, October 1952. Summarizes the principal e- vents and trends during the period from mid-1951 to mid-1952 which affect and are of interest to FAO, The widened interest in the food and popula- tion problem and the accelerated progress of the technical assistance program are discussed. In reviewing FAO's drive to increase the supply of technicians, it is pointed out that among the va— rious types of training centers set up are several on fisheries in Latin America and the Far East. In the discussion of the growth of regional action programs, fisheries programs in Europe, Mediterra— nean Area, Latin America are covered. The publi- cation reports on the new emphasis on goals and programs for increased food production, the move— ment for agrarian reform, and proposals for meet— ing acute food shortages and famine. The chapter on the growth of country development projects in- cludes a- discussion on the improvement of fisheries. The last chapter deals with continuation of world- wide technical services by FAO. Greek Trade Manual (Revised Hdition), 444 p., print— ed. Mutual Security Agency, Special Mission to Greece for Economic Cooperation, Athens, Greece, 1953. (Also available from the Mutual Security Agency, Washington 25, D. C.) This second edition of this manual is designed to facilitate further development of trade relationships between busi- nessmen of Greece and the United States, with par— ticular reference to those smaller manufacturing and exporting firms in both countries whose for-— July 1953 THESE PUBLICATIONS ARE NOT AVAILABLE FROM TH COMMERCIAL FISHERIES REVIEW i. E WILOLIFE SERVICE, BUT USUALLY MAY BE OBTAINED FROM THE AGENCIES ISSUING THEM, eign trade opportunities may be aided by this information. It includes a summary of import and export procedures, together with an alpha- betical directory of import and export firms in Greece as well as manufacturers arranged by commodities (including fishing equipment, oils, sponges, and fish) and geographical locations. Guide to the Fishes of Colorado, by William C. Beck- man, Leaflet No. 11, 111 p., illus., printed, $1.00. University of Colorado Museum, Boulder, Colo., December 1952. This guide is intended to help identify the fish of Colorado, giving descriptions and general information on the life history of each species. It has been prepared for use both by the amateur and by beginning students, and therefore includes both non-tech- nical and technical material. Keys to families, genera, species, and subspecies have been con- structed, and an explanation of the terms and measurements used in the keys and descriptions is given. A tentative list of the fish expect- ed to be found in Colorado is also included. In Colorado waters one may expect to find 89 dif- ferent fishes at the present time. Of these, 54 are native to Colorado, 33 have been introduced, and 2 are potential residents having been taken within a short distance of the border in neigh-— boring states. How to Eat a Maine Lobster, 4 p., illus., printed. Department of Sea and Shore Fisheries, Augusta, Maine. Descrives, with illustrations, how to eat boiled and broiled Maine lobsters. Also contains an illustrated orief account of how Maine lobsters are caught and packed. (India) Report on the Marketing of Fish in the In- Is dian Union (Second Hdition), Marketing Series No. 65, 174 p., illus., printed. Manager of Publications, Civil Lines, Delhi, India, 1951. Presents a list of the chief commercial fish and shellfish of India, and annual production data. Also discusses the gear and methods of fishing; type of fishing vessels; preparation for market; demand and utilization; and assembling, storage, transportation, and distribution. A short chap— ter is devoted to the nature of fisheries re—- search now being undertaken with suggestions as to how these activities should be coordinated and extended to make the fishing industry play a significant role in solving India's food prob- lem. Pesca, by Alejandro Quesada, 277 p., printed in Spanish. Fondo de Cultura Economica, Mexico, 1952. This publication is the "Fisheries" sec— tion of the Economic and Social Development of Mexico, a report recently issued in Mexico. The entire report is a study made by the Combined Mexican Working Farty of the International Bank far Reconstruction and Development and the Mexi- can Government (Nacional Financiera). This book, La Fesca, is an economic analysis of the Mexican fisheries and their potential. All available data from official sources was draa#n upon in or- der to conduct this study. Although the data are as complete as possible, the author points out that the information was drawn from reports which cover the fisheries only partially and certain fundamental aspects of the fisheries are omitted. The study required a visit to most of the fish- ing centers on both coasts of Mexico. Both fresh- and salt-water fisheries are covered. Inanalyz- ingthe relevant aspects of the Mexican fisheries, comparisons andreferences to similar aspects of the fisheries of other countries have been in- cluded. Economic, human, natural, technical, and financial aspects of the fisheries are reviewed. A list of the principal species and their dis- tribution along the Mexican coasts, fishermen's cooperatives, working conditions, wages, fish- ing fleet statistics, plants handling and packers of fishery products, fishing methods and typesof gear, oceanographic investigations, fish culture, catch, distribution, foreign trade, legislation affecting the fisheries, amd the outlook of the Mexican fisheries are some of the subjects dis- cussed. The book also contains a bibliography and an index. This is a complete study of the Mexican fisheries from all aspects. (MSA) Monthly Report of the Mutual Security Agency to the Public Advisory Board (Dataas of March 31, 1953), 104 p., illus., processed. Jivision of Statistics and Reports, Mutual Security Agency, Washington 25, D. C. Included are charts and tables summarizing important activities under the economic assistance and defense support programs of the Mutual Security Agency and its predecessor, the Economic Cooperation Administration, through March 31, 1953. Charts and appendix tables on the European program cover MSA/ECA operations be- ginning with April 3, 1948. Charts and appendix tables on the Far East program cover MSA/ECA op- erations under the China Area Aid Act of 1950. A section of the report deals with U. S. foreign trade. Operation of the Trade Agreements Program (Fifth Re- port, July 1951-June 1952), 289 p., processed. United States Tariff Commission, Washington, D.C., 1953. During the period covered by the report, the United States concluded no new trade agree- ments. The report, however, discusses the con- cessions that the United States granted and ob- tained in the General Agreement on Tariffs and Trade in 1950-51 at the Torquay Conference, and analyzes the effects of all trade agreement con- cessions on the level of the United States tar- iff. It also covers, for the last half of 1951 and the first half of 1952, important develop- ments respecting the General Agreement. Like the earlier reports, the fifth report also discusses such matters as changes in tariffs, exchange con- trols, and quantitative restrictions on imports by contracting parties to the General Agreement; changes in tariffs, exchange controls, and quan- titative restriction on imports by countries with which the United States has bilateral trade agree- ments; and United States measures relating to im- ports of trede agreement items. This report on the Operation of the Trade Agreements Programwas prepared in compliance with Executive Order 10082, of October 5, 1949. The first report in the se- ries (issued in 1948) covered the period from June 1934 through April 1948; the second report (is- sued in 1949) covered the period from May 1948 to April 1949; the third report (issued in 1951) covered the period from April 1949 through June 1950; and the fourth report (issued in 1952) cov- ered the period from July 1950 through June 1951. (Copies of the earlier reports may be purchased 80 COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 THESE PUBLICATIONS ARE NOT AVAILABLE FROM THE H AND El WILDLIFE SERVICE, BUT USUALLY MAY BE OBTAINED FROM THE AGENCIES ISSUING THEM. from the Superintendent of Documents, United States Government Printing Office, Washington 25, D. C.) (Oregon) Fish Commission Research Briefs, vol. 4, no. 1, 39 p.,illus., printed, free. Fish Commission of Oregon, Portland 1, Oregon, December 1952. Con- tains short "progress" reports on some of the cur- rent studies by the Commission. Summaries of two reports of special interest to commercial fish- ermen and industry members follow: "A Review of the 1951 Albacore Season," by Edwin K. Holmberg. - The author summarizes his report as follows: "In 1951, the landings of albacore in Oregon reached a new low “ust under 3 million pounds. Landings of albacore in Ore- gon have been erratic, ranging from a peak of 22.5 million pounds in 1944 to the 1951 low. After the peak of 1944, the annual landings drop- ped to 4 million pounds in 1946. The 1947 total Was up to 9.5 million pounds, but a steady de-— cline has occurred since then. The landings in Oregon do not reflect the trend of the coastwise landings since 1947; however, the 1951 decline was apparent throughout the fishery. "There are only two principal size groups (presumably also age groups) in the fishery. Fisheries exploiting a small number of age groups have a greater tendency toward large fluctuations in the catch. The effects of oceanographic and meteorological conditions on the abundance of al- bacore are not known. "The northern tuna fleet ‘is composed of ves— sels which also fish for halibut, ocean salmon, and bottom fish. There are a few vessels which fish exclusively for albacore. "Albacore were scarce off Oregon inthe 195) season, but same good catches were made off cen- tral California. In early November, landings were made in Oregon by vessels returning to their home ports from California. "Racial population studies are being con- tinued in Oregon. The length-frequency samples have beenweight— ed by the catch." "Results of Preliminary Shrimp Explorations Off the Oregon Coast," by Alonzo T. Pruter and George Y. Harry, Jr. The authors summarize their report as follows: "During the months of October 1951, and March, April, and May 1952, a total of 80 exploratory shrimp drags were made off the Or- egon coast between the Columbia River and the Rogue River. Pink shrimp (Pandalus jordani)were taken in sizable quantities in most of the areas explored. "The largest concentrations of shrimp were taken in areas with a green mud or mixed mud and sand bottom. "No pink shrimp were taken in less than 50 fathoms, and the center of abundance was found to occur at depths between 60 and 80 fathoms. "Four definite size groups of pink shrimp are present in the catch; two are males and two females, "Less than 3 percent of the females taken on October 5 through October 8, 1951, were carry- ing eggs, but 42 percent of the females examined about three weeks later were egg-bearing. On March 22, 1952, eleven percent of the females were egg-bearing; on April 4, twenty-four percent were egg—bearing; and on May 28, no females in the samples carried eggs. "The larger females apparently do not attain the egg-carrying stage before the smaller females. "An inverse relationship was found between the number of shrimp and the number of fish taken: drags producing the most shrimp usually yielded the smallest number of fish. "The Fish Commission of Oregon will continue the shrimp explorations as opportunity permits." Also included are the following reports: "How May Fish Hatchery Foods Needs be Met," by Russell O. Sinnhuber; "Second Frogress Report on Spring Chinook Salmon Diet Experiments," by Thomas B. McKee, Ernest R. Jeffries, Donald L. McKernan, R. O. Sinnhuber, and Duncan K. Law; and "The 1950 Willamette River Spring Chinook Sport Fishery," by Chester R, Mattson and John B. Dimick. illus., printed. U.S. Coast Guard, Washington, D. C., 1953. Examples of espionage and subver— sive activities are pictured in this booklet with the suggestion that if such are seen they should be reported to the local COTP and FBI offices. Addresses of these offices are listed in the last two pages of the booklet. "The PFothead Whale Industry of Newfoundland," by D. E. Sergeant, article, Trade News, March 1953, vol. 5, no. 9, pp. 3-4, 18, illus., processed. Department of Fisheries, Ottawa, Canada. Describes an unusual fishery in the eastern bays of Newfound- land—the driving of herds of pothead whales, Globi- cephala melaena, and their processing for meat and oil. The pothead whale, known elsewhere as black— fish, pilot whale or caa'ing whale, related to the beluga or white whale. It is found onboth sides of the North Atlantic and is hunted also in the Faeroe Islands, where the technique of driving is very similar to that pursued in Newfoundland. Sporadic driving takes place also in Iceland, Green— land, and North Norway. Marine Laws (Navigation and Safety), by Frederick K. Arzt, 1,212 p., printed, $6.95. Equity House, Equity Publishing Corporation, Stony Brook, L. I., N. Y., 1953. This is a successor of the author's previous book, Navigation Laws of the UnitedStates, 1940. Presents up-to-date federal laws and inter- rational conventions covering marine matters, with amendments to January 20, 1953, included. Forty- six chapters deal with such aspects of marine law as admeasurements of vessels, load lines, inspec— tion of vessels, documentation, ship mortgages, in— surance, radio, clearance of vessels, and death on July 1953 COMMERCIAL FISHERIES REVIEW 81 WILDLIFE SERVICE, BUT USUALLY MAY BE OBTAINED FROM THE AGENCIES ISSUING THEM. the high seas. Terms of the Intermational Conven- tions for Safety of Life at Sea, 1929 and 1948, are presented. Those vessel operators engaged in for- eign and domestic markets, carrying of passengers, mail service, and fishing will find sections deal- ing with their special problems. Aids to Naviga- tion, pilotage, consul's services to vessels, anti- smuggling, immigration, crimes, legal procedure, and nautical education are covered. The Nerchant Marine Act, 1936, and related statutes are present— ed for easy reference. Operators of fishing ves- sels will find those international rules which are now in effect and those which are tentatively sched: uled to became effective next year. Especially valuable to the layman are the "comments of author" throughout the text which explain with background information the laws and give additional sources of information. A useful appendix includes a schedule of navigation fees, customs collection districts and ports of documentation, and Coast Guard districts and marine inspection offices. --D. E. Powell (Prince Edward Island) Fisheries Statistics of Can- ada, 1951, 4 p., printed, French and English, 25 cents. Department of Trade and Commerce, Domin- ion Bureau of Statistics, Ottawa, Canada. Con-— sists of tables giving the production and value of the prircipal species of fish and shellfish landed in Prince Edward Island in 1949-51; quan- tity and value of manufactured fishery products for 1950-51; capital equiyment in the primary fisheries operations; the number of persons en- gaged in the fisheries; and the vessels used in the sea fisheries. "The Sea Lamprey in Inland Waters," by Truman T. Guard, article, Michigan Conservation, May—June 1953, vol. XXII, no. 3, pp. 14-15, 19-20, illus., printed. Michigan Department of Conservation, Lansing, Nich. Describes a survey conducted by the author in the spring and summer of 1952 to determine the distribution of the sea lampreys in the inland lakes of Michigan. Also describes the characteristics of the sea lampreys, which annually enter many Michigan streams from the Great Lakes, and four mative lampreys: the Amer- ican brook lamprey, Michigan brook lamprey, chest- nut lamprey, and the silver lamprey. Survey of Fishery Activities, 1953, compiled by the Branch of Federal Aid, 138 p., processed, May 1953, A catalogue of current research and man-— agement projects pertaining to the sport fish- eries of the United States. More than 500 pro- jects designed to help perpetuate sport fishing are now in progress throughout continental and territorial United States. The activities de- scribed in this bulletin fall into two main cat- egories: fishery research and fish management. The bulletin cites projects under way inthe 48 States, Alaska, Hawaii, Fuerto Rico, and the Virgin Islands. About one-fourth of them are be= ing supported by Federal funds made available to States and territories under the Federal Aid in Fish Restoration Act, better known as the Dingel)- Johnson program. The remaining projects are be- ing financed directly by State fish and game de- partments, the Fish and Wildlife Service, Soil Conservation Service, Forest Service, State health departments, and a number of colleges and univer- sities. Research is being conducted to obtain need- ed information on such matters as fish migration, spawning habits, feeding habits, food supplies, age and growth, survival, polluted waters, habitat requirements, control of excessive weed growths, fishing pressures, angler harvests, effects of siltation, rough fish control measures, effects of power projects on fish populations, and devel- opment of improved methods such as the use of e- lectricity in catching fish for study purposes. While most of the research projects deal with fresh water species, studies of marine sport fisn are under way in several of the coastal States. Management projects are concentrating on such activities as weed control, rough fish con- trol, fish cultural operations, habitat improve- ments, constructing and maintaining public fish- ing lakes, fertilizing fishing waters, increasing fish food supplies, constructing and maintaining fish ladders and diverting fish into tributary streams to circumvent power projects in rivers, reducing fish losses in irrigation canals, remov— ing log jams and other streamflow obstructions, and improving watersheds to stabilize streamflows. (Due to a limited printing, the publication will not be available to the general public but persons interested in studying the contents will find reference copies at Fish and Wildlife Service regional offices in Portland, Oregon; Albuquerque; Minneapolis; Atlanta; Boston; and Juneau, Alaska: or at State fish and game department offices.) The Technology of Herring Utilization (Report of the FAG Meeting on Herring Technology, Bergen, Norway, Sept. 24-29, 1950), edited by Mogens Jul and Mog. Kondrup, Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, Rome, Italy. Fiskeridirektoratets Skrifter, Serie Fiskeri, vol. II, no. 1., published by the Norwe— gian Director of Fisheries, printed by A. S. John Griegs Boktrykkeri, Bergen, 1953. 405 pages. Contains the papers and discussions at tne FAO meeting on Herring Technology in Bergen, Nor- way, September 24-29, 1950. The material has been arranged according to subject so that the book can be used as a handbook. The following chapters are included: 1. Scope and results of the meeting. 2. The herring industries. 3, The herring-market— ing situation. 4. Possibilities for finding mar- kets for herring products in Asia and Africa. 5. Fish protein products made by fermentation or chem- ical hydrolyzation. 6. Fresh herring. 7. Evis- cerating, boning and filleting machines. 8. Freez— ing of herring. 9. Salted and spiced herring. 10. Herring delicatessen and marinated products. ll. Smoking, drying and dehydration of herring. 12. Herring canning. 13. Manufacture of herring oil and meal. 14. Fish solubles, whole meal, etc. The Government Printer, Entebbe, Uganda, 1952. In- cludes a section on the fisheries of the Uganda waters of Lake Victoria; Lake Albert (including the Albert Nile and associated fisheries); Lake 82 COMMERCIAL FISHERIES REVIEW Vol. 15, No. 7 WILDLIFE SERVICE, BUT USUALLY MAY BE OBTAINED FROM THE AGENCIES ISSUING THEM. Kyoga and waters of eastern Uganda; and Lakes George, Edward, and waters of Western Uganda. Tables give the 1951 catch of fishery products by months for Lake George and Lake Edward and Kazinga Channel; and quantities and values of dried (salted) and smoked fish exported in 1951 from Lakes Edward, George, and associated fisheries. The Uganda Fish Marketing Corporation, orices of dried fish, the East African Fisheries Research Organization, fish farming, boat building, the quantities and values of fishing nets imported, and angling are some of the other subjects covered. Whalemeat: Bacteriology and Hygiene, by R. H. M. Robinson, Mh. Ingram, R. 4. M. Case, J. G. Ben— stead, and H, E. Daniels, Food Investigation Spe- cial Report lio. 59, 62 p., printed, illus., 2s. net (30 U. S. cents net). Department of Scientific and Industrial Research, Cambridge, ingland. (For sale by Her Majesty's Stationery Office, London, England.) Describes at length the types and num- bers of bacteria found in the meat of the whale at the various stages of processing. Two main groups of bacteria are recognized; those present fromthe outset throughout the carcass of the whale and those which reach the meat during dressing and handling. The report points out that although with the present methods of catching whales little can be done to reduce the numbers of bac- teria initially, two measures can be taken to limit their subsequent multislication. The first is to reduce to the minimum the time between the death of the whale and the freezing of the meat, The second is to bleed the carcass and slit the belly wall as soon as possible after death. Tha contamination of the meat during dressing is largely eliminated by proper attention to sani- tary handling of the carcass and meat. This phase is dealt with in the final sections of the re-— port. The first part of the booklet discusses the species of whales hunted, capture and de- livery of whales to factory or land station, dis- membering the carcasses, and post-mortem changes of bacteriological significance in whale muscle, The second part concentrates on the bacteria in whale meat. Whalemeat: Production and Preservation, by J. G. Sharp and B. B. Marsh, Food Investigation Spe— cial Report No. 58, 54 p., printed, illus., 2s. 6d. net (35 U. S. cents net). Department of Sci- entific and Industrial Research, Cambridge, Eng- land. (For sale by Her Majesty's Stationery Of— fice, London, England.) Surveys the whaling in- dustry, the methods used in slaughtering and handling the carcasses, and the general problems arising in the production and preservation of whale meat. This booklet discusses the Antarctic whaling industry; changes occurring in themuscle tissue of whales after death; chemical composi— tion, color, and texture of whale meat; palati- bility and flavor of whale meat; changes occur- ring in frozen whale meat during storage; and differences in the condition of the fresh meat, bacteriology, and storage behavior. Editorial Assistant--Ruth V. Keefe Compositors--Jean Zalevsky, Ke HK HK Photograph Credits: Betty Coakley, Illustrator--Gustaf T. Sundstrom Alma Greene, & Kathlyn Brophy Pageby page, the following list gives the source or pho- tographer for each photograph in this issue. were obtained from the Service's file and the photographers are unknown. Photographs on pages not mentioned Page 48--Food and Agriculture Organization. INT.-DUP. SEC., WASH., D.C. 47262 July 1953 COMMERCIAL FISHERIES REVIEW CONTENTS, CONTINUED FOREIGN (CONTD.): CANADA (CONTD.): NEWFOUNDLAND FISHERY SUBSIDIES AND ASS | STANCE NEWFOUNDLAND TAKES OVER BAIT DEPOTS ... CEYLON: CANADA TO SUPPLY FISHING TRAWLERS COLOMBIA: |MPORT RESTRICTIONS LIFTED FROM CERTAIN FISHERY PRODUCTS ...... EGYPT: UNITED STATES-EGYPTIAN TECHNICAL COOP- ERATION AGREEMENT (INCLUDES FISHERIES PROGRAM aleltoeleeienuioeieisiels Gcieieiete | CELAND: STOCKF1SH TRAWLERS TO LAND AT BRITISH PORTS AGAIN JAPAN: NEW CANNED TUNA EXPORT PRICES TUNA EXPORTERS COMPETE FOR RAW PRODUCT CANNERS MEET ..... MOTHERSHIP-TUNA EXPEDITIONS TO PACIFIC EQUATORIAL WATERS IN 1953 U. S. FREEZERSH|P BOUGHT FOR TUNA MOTHERSH | P GOVERNMENT TO FINANCE TUNA VESSEL CON- STRUETICN scosccoudacoabndoosododuadOC FISHERIES COLLEGE USES DEEP-SEA TRAIN- ING SHIP NORTH PACIFIC SALMON EXPEDITION PLANS FOR IES) Soosoeodonoe NORTH PACIFIC SALMON FLEETS REPORT GOOD CATCHES NORTH PACIFIC CRAB EXPEDITION REPORTS FISHING BELOW EXPECTATIONS ..e-eseroee NORTH PACIFIC WHALING EXPEDITION, 1953 TRAWLER FLEET REDUCED TO CURTAIL COASTIAISIOVEREIISHIIING mevereieieieters orerelerevelelers INTEREST IN NEGOTIATING INTERNATIONAL FISHERIES AGREEMENTS ...e-e.- SARDINE INDUSTRY, 1951-52 AND OUTLOOK FOR IES) cocadodboonsopodooooeedaoaaca PEARL SHELL EXPEDITION SAILS FOR ARAFURA SEA MEX1CO: GUAYMAS SHRIMP FISHERY, APRIL 1953 .... MAZATLAN SHRIMP FISHERY TRENDS, APRIL NOSSE See cise sarees NETHERLANDS: WHALE-O|L PRODUCTION, 1953 .....e.eseee NEW ZEALAND: SPINY-LOBSTER FISHING REGULATIONS CHANGED ..... eo rr) rn ee ee Ce ee eres ercr esses oerceose ee ee ac ee ee er esse er cess eoreore eres or er er er eresor cr orore PAGE FOREIGN (CONTD.): NICARAGUA: GOVERNMENT SIGNS FISHERIES CONTRACT WITH U. S. FIRM we. NORWAY: Ce oo iy COD FISHING OFF GREENLAND REPORTED GOOD PANAMA: NEW BAIT-FISHING REGULATIONS PROPOSED UNION OF SOUTH AFRICA: SOUTH WEST AFRICA'S EXPORTS OF FISHERY ANCPWCIS., IE oododogccannpsGondbeon FISH O|L AND MEAL OUTPUT SETS NEW REC- ORD IN 1952 sielele!ejels!sialele|els/c sie ats P|LCHARD CATCH LIMIT ESTABLISHED UNITED KINGDOM: FISHING PORTS PLAN TO RESTRICT LANDINGS BUSINESSMAN GETS EXCLUSIVE CONCESS1ON FOR LANDINGS OF |CELANDIC TRAWLERS IN BRUNTAUING Be ctecererely eters roicintese cave atnretteran WHITE FISH SUBSIDY EXTENDED ........0- WHITE FISH AUTHORITY TO REDUCE EX- VESSELUUEARSHINWA Ker rete reteie noeieis stances FISH CANNERIES FACE CRISIS FEDERAL ACTIONS: ...seeee- DEPARTMENT OF INTERIOR: FISH AND WILDLIFE SERVICE: NOTICE OF INTENTION TO ADOPT AMEND- MENTS TO ALASKA COMMERCIAL FISHERIES RECULATIONS: SéccnccoccccnapoopDG00De MUTUAL SECURITY AGENCY: GREECE AUTHORIZED TO PURCHASE CANNED FAUST Bayete sccstet evelar svevokevele etn /nee wersvorave neiaies THAILAND AUTHORIZED TO PURCHASE FISH CARRIERS! -steiepsisie cls vere/gestoievale)ereisiats asetele) evere EIGHTY-THIRD CONGRESS (FIRST SESSION), JUNE 1953 see cerr eros Cr oO i Oe i FISHERY INDICATORS? wccccncccereresssoves CHART 1 - FISHERY LANDINGS FOR SELECTED STATES wecccescvcsercrccecncecccvecseres CHART 2 - LANDINGS FOR SELECTED F1SHER- VES ceccccecratoercncrcccrecessscceveses CHART 3 - COLD-STORAGE HOLDINGS AND FREEZINGS OF FISHERY PRODUCTS ....e.c0. CHART 4 - CANNED PACKS OF SELECTED FISHERY PRODUCTS CHART 5 - U.S. FISHERY PRODUCTS RECENT FISHERY PUBLICATIONS: FISH AND WILDLIFE SERVICE PUBLICATIONS MISCELLANEOUS PUBLICATIONS IMPORTS CORRECTION June 1953 issue, p. 32. paragraph should read: The first sentence of the last "The 1952 canned shad production was 26 percent less in quantity and 30 percent lower in value than the 1951 production (table 2)." eoeeceseesecoce eoecesere seers 83 PAGE 59 60 61 61 61 62 62 62 63 63 63 65 65 TT Special Scientific Report: Fisheries No. 104, Survey of the Domestic Tun » is a detailed report requested from the Department of the Interior 7 six Pacific Coast Senators. The tuna industry's position in the domestic econo- my is analyzed in the report. Quitea numberof the U. S. Fish and Wildlife Serv— ice's specialists worked on the vari- ous phases of the report. Under the discussion of the history of the United States tuna industry are in- cluded the following subjects: de- scription of tunaand tuna-like fishes, the United States tuna industry, im— | | ports of tuna and tuna-like fishes, YELLOWFIN TUNA (NEOTHUNNUS MACROPTERUS ) tuna fishing gear, tuna fishingcraft, tuna canning processes and types of packs, and tuna byproducts. Other chapters analyze consumption, world produc- tion, domestic production, processing, relationship of the industry to the na- tional interest, distribution, and Government assistance in the United States and competing countries. A set of conclusions and recommendations is included. SURVEY OF THE DOMESTIC TUNA INDUSTRY Each subject is covered in considerable detail and represents the results of exhaustive analysis by experts in specialized fields after months of prelimi- nary work. For the principal subjects covered the report contains the following] observations: consumption--outlook bright; world production—landings can be maintained and increased; domestic production and processing——prospects of large] relative cost reduction rather bleak; distribution--no great prospects of cost savings. Interspersed throughout the report are many tables and charts which provide} a wealth of statistical detail on various subjects related to the tuna industry. A free copy of Special Scientific Report: Fisheries No. 104 is available upon request from the Division of Information, U. S. Fish and Wildlife Service, Washington 25, D. C. °KON feoegqT AVTsssATUG [[eUusz0N *T1ISH mOourag uoT}ZeAZSSUOD Jo *4dsq ‘ar ‘sqqto *H J4eqe0u ote‘€ - €5/8 - eMNW WOd SGIOT °ON } Fused SSANISNA WIDISA0 ‘2D ‘Gg ‘S2@ NOLONIHSVM SOIANSS 35I101IM GNV HSI O0€$ ‘3DVLSOd 40 LNAWAVd YOIMSLNI JHL JO LNAWLYVd3aGd GIOAV OL ASN ALVAINd YOs ALIVNAd S3LVLS GSLINN