PACIFIC SARDINE (PILCHARD) EGGS AND LARVAE AND OTHER FISH LARVAE, PACIFIC COAST - 1952 Marine Biological Laboratory WOODS HOLE, MASS. SPECIAL SCIENTIFIC REPORT- FISHERIES No. 123 UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE Explanatory Note The series embodies results of investigations, usually of restricted scope, intended to aid or direct management or utilisation praotioes and as guides for administrative or legislative action. It is issued in limited quantities for the offioial use of Federal, State or cooperating Agenoies and in processed form for eoonomy and to avoid delay in publication. sreoi United States Department ox the Interior, Douglas McKay, Secretary Fish and Wildlife Service, John L. Farley, Director PACIFIC SARDINE (PILCHARD) EGGS AND LARVAE AND OTHER FISH LARVAE, PACIFIC COAST - 19S2 By Elbert H. Ahlstrom Fishery Biologist Special Scientific Report: Fisheries No. 123 Washington, Do C. April, 195U PACIFIC SARDINE (PILCHARD) EGGS AND LARVAE AND OTHER FISH LARVAE, PACIFIC COAST, 1952 The results of quantitative sampling of eggs and larvae of the Pacific sardine or pilchard (Sardinops caerulea) off the west coast of California and 3a ja California during 1952 are given in this report, the third in a continu- ing yearly series. Also included, are records of the larvae of 5 other species: northern anchovy (Engraulis mordax) , jack mackerel (Trachurus sym- aetricus) , hake (Merluccius productus) , Pacific mackerel ( Pneumatophorus diego), md rockfish (Sebastodes spp.). The material was collected on biological-oceanographical cruises being itade by agencies participating in the California Cooperative Oceanic Fisheries (Investigations (formerly called the California Cooperative Sardine Research 3rogram). The investigations are sponsored by the Marine Research Committee, md are carried out cooperatively by the South Pacific Fishery Investigations >f the United States Fish and Wildlife Service, the Scripps Institution of oceanography of the University of California, the Bureau of Marine Fisheries )f the California Department of Fish and Game, and the Hopkins Marine Station )f Stanford University, The data are presented in 8 tables. Standardized haul factors for plank- ion hauls made on survey cruises during 1952 are listed in table I. Additional iata concerning these hauls may be found in "Zooplankton volumes off the Paci- ric coast, 1952", Special Scientific Report: Fisheries, No. 100; these include sosition of occupancy, date, hour, depth of haul, and volume of water strained, A record of all collections containing Pacific sardine eggs in 1952 is jiven in table II. The eggs are enumerated by age (in days) since spawning, ind for each haul the average number of eggs spawned per day has been determined. The larvae of 3 species are enumerated by size: Pacific sardine in table [II, anchovy in table IV, jack mackerel in table V. The larvae of the remain- ing species are tabulated by number only: hake in table VI, Pacific mackerel i.n table VII, and rockfish in table VIII, It is a pleasure to acknowledge the wholehearted cooperation given by the participating agencies. All personnel of the South Pacific Fishery Investi- gations contributed to this project, many devoting their full time to it. )avid Kramer, Robert Counts and James Thrailkill aided in the identifications, enumerations , and measurements included in this report. Figure 1.- Station plan, showing location of all stations occupied on routine survey cruises of the California Cooperative Oceanic Fisheries Investigations during 1952. -2- AREA COVERED The stations occupied during 1952 are shown in figure 1. Stations occu- pied on only 1 or 2 cruises are shown as open circles; stations occupied on 3 or more cruises are indicated by black dots. Survey cruises were made monthly in 1952, except in December. The stations occupied on each cruise made during the year can be determined from table I (Record of standardized haul factors). Coverage during 1952 is summarized by area in text table 1. The coverage varied in intensity on different cruises, being most intense in the sardine spawning areas during the main spawning season (March through June). The cover- age north of Point Conception (station lines 40-77) was not as thorough as in 1950 or 1951. The coverage between Point Conception and Point San Juanico (station lines 80-137) was more intensive than during any previous season. The area off southern Baja California was visited only once (February). A compari- son of coverage in different parts of the survey area in 1950, 1951 and 1952 is given in text table 2. Text table 1.- Coverage during 1952, summarized by month and area Area north of So, Calif. Pt. Conception and adj. Central Southern Total Cruise (station lines Baja Calif. Baja Calif. Baja Calif. all Month number 77 and above) (80-107) (110-137) (140 & below) areas January 33^5201^/ 0 47 47 February 34 5202 0 47 48 March 35 5203 0 45 46 Late March 35 5203 0 0 63 18 68 722/ 23 93.,, 71 34 116^ 72 46 70 63. . 15 39 45^ September 41 5209 21 39 34 October 42 5210 18 36 34 November 43 5211 18 38 35 December - - April 36 5204 May 37 5205 June 38 5206 July 39 5207 August 40 5208 0 94 14 109 0 91 0 63 0 158 0 187 0 222 0 179 0 99 0 94 0 68 0 91 Total 193 638 630 14 1475 l/ Cruises numbered in order since beginning of research program in 1949. 2/ Revised numbering system for cruises. First two digits indicate year; the last two indicate month during which cruise took place. 2/ Includes extra occupancies listed in supplement to table I. 3 - Text table 2.- Comparison of intensity of coverage in different parts of the survey area in 1950, 1951 and 1952, North of Point Conception (20) (40-77) Southern California and adjacent Baja Calif orcia (80-107) Central Baja. California (110-137) Southern Baja California (140-15?) Total Number of stations occupied 1950 ' 1951 1952 376 288 193 358 597 638 230 466 630 0 89 14 964 1440 1475 Seven vessels participated in one or more cruises. These were the Spencer F, Baird, Crest, Horizon, Paolina T. and E. W. Scripps of the Scrippa Institution of Oceanography, the Yellowfin of the California Department of Fish and Game, and the Black Douglas of the U. S. Fish and Wildlife Service. The vessels taking part in each of the U monthly survey cruises in 1952 are lis- ted in text table 3* Text table 3o- Research vessels participating in the collection of material during 1952. Month Cruise number Number vessels used S.F. BUCK PAOLINA E.W. BAIRD DOUGLAS CREST HORIZON T. SCRIPPS YELLOWFIN January 33 February 34 March 35 Late March 35 April May June July August September October November 36 37 38 39 40 41 42 43 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X - 4 - METHODS OF SAMPLING Plankton samples were obtained by obliquely hauling a conical net, 1,0 meter in diameter at the mouth, from approximately 140 meters deep to the sur- face, except at shallow stations. The nets were constructed of No. 30xxx grit gauze. The depth range fished by the net during each haul is given in column 8 of the extended table in Special Scientific Report: Fisheries, No. 100. The hauls were made at a vessel speed of about 1-1/2 to 2 knots. The water enter- ing the net during a haul was measured by a current meter fastened in the mouth of the net. The volume of water strained while taking each haul in 1952 is listed in column 7 of the table referred to immediately above. The methods of deriving volume of water strained during a haul from current meter readings, and of standardizing hauls for comparability are discussed in a preceding re- port (Ahlstrom 1953: 4-6). SEPARATION OF FISH EGGS AND LARVAE FROM PLANKTON SAMPLES Plankton hauls obtained on the 11 survey cruises made during 1952 totaled 1475. In working up the samples in the laboratory, the volumes of plankton were first determined (cf . , "Zooplankton volumes off the Pacific coast, 1952? Special Scientific Report: Fisheries, No. 100), the larger samples were frac- tioned into aliquot portions (2, 4» 8 or 16), and the samples or aliquota were examined under a low power binocular microscope in order to separate fish eggs and larvae from other plankton organisms. Approximately l/6th of the samples were fractioned into aliquot portions before examining; the remaining 5/6ths were examined in entirety. A single aliquot portion was sorted of each fractioned sample. Information, by cruise, on the number of samples examined in entirety and those which were fractioned, is given in text table 4. Text table 4.- Laboratory examination of the 1952 plankton samples. Percent examined No. samples 6 .25 12.5 25 50 100 examined Cruise 33 7 87 94 Cruise 34 1 2 4 102 109 Cruise 35 1 10 80 91 Cruise 35 (Late) 1 2 60 63 Cruise 36 5 11 U2 158 Cruise 37 1 1 6 22 157 187 Cruise 38 1 15 34 172 222 Cruise 39 3 12 43 121 179 Cruise 40 2 6 17 74 99 Cruise 41 1 3 3 9 78 94 Cruise 42 1 11 76 88 Cruise 43 1 90 91 Total 10 52 171 1239 1475 GUIDE TO TABLES Table I* Standardized Haul Factors (S. Factors). Adjusts each haul to the comparable standard of 10 cubic meters of water strained per meter of depth fished (see Ahlstrom 1953: 4-6). * . . .An asterisk following an S. factor indicates that one or more additional occupancies of the station were made during the cruise. The additional S. factors for these hauls are given in a supplement to table I. - ... A dash indicates that the station was not occupied during the cruise under which it appears0 NQ Haul not quantitative. Table II. Record of Sardine Eggs, 1952. Number of normal eggs. „ . Number of normally developing sar- dine eggs. Total number of epgs • . . Includes all sardine eggs taken in a sample, whether norr»ml or abnormal. Srrdine eggs were classi- fied as abnormal vrhen the embryos were stunted and misshapen. It is not known whether such abnormalities are caused by a diseased condition of the eggs, by mechanical injury during collection, or by other means. The letters A through D are used to designate age categories of eggs: A . . . Eggs spawned within B . . . Eggs spawned within C . . . Eggs spawned within D . * • Eggs spawned within Unci. . Unclassified eggs. 24 hours of collection. 24.1 to 48 hours of collection. 48.1 to 72 hours of collection. 72.1 to 96 hours of collection. Deteriorating eggs that could not be classified with certainty. * . . . Explained under Ave, n* . n . . . Total number of eggs in sample. Ave, n^. . . Average number of eggs spawned per day. Because of incomplete age categories resulting from hauls having been taken while spawning or hatching was actively taking place, not all age categories were used in determining n', but only those followed by an asterisk. 6 ■ Record of SardJne larvae, 1952. Midpoint of size classes. . . The larvae are grouped into size classes which have the following midpoints and ranges: Midpoint (in mm.) 3.25 4.75 5.75 6.75 7.75 8.75 9.75 10.75 11.75 Range (in mm.) 2.26-4.25 4.26-5.25 5.26-6.25 6.26-7.25 7.26-8.25 8.26-9.25 9.26-10.25 10.26-11.25 11.26-12.25 Midpoint Range (in ram.) (in ram.) 12.75 12.26-13.25 13.75 13.26-U.25 14.75 14.26-15.25 15.75 15.26-16.25 17.25 16.26-18.25 19.25 18.26-20.^5 21.25 20.26-22.25 23.25 22.26-24.25 Record of Anchovy Larvae, 1952. Same as above, except for the first category. The size class with midpoint of 3.0 mm. contains larvae from 1.76 to 4.25 mm. in length. Record of the Larvae of Jack Mackerel (Trachurus syrametricus) , 1952. Midpoint of size classes. . . The larvae are grouped into size classes which have the following midpoints and ranges: Midpoint (in mm.) 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.75 6.75 Range (in mm.) 1.76-2.25 2.26-2.75 2.76-3.25 3.26-3.75 3.76-4.25 4.26-4.75 4.76-5.25 5.26-6.25 6.26-7.25 Midpoint (in mm.) 7.75 8.75 9.75 10.75 11.75 12.75 13.75 14.75 15.26 and Range (in mm.) 7.26-8.25 8.26-9.25 9.26-10.25 10.26-11.25 11.26-12.25 12.26-13.25 13.26-U.25 U.26-15.25 larger Record of the Larvae of Hake (Merlucclus productus) , 1952. The standardized number of larvae are listed by station for all cruises on which they were taken during 1952. A dash indicates that the station was not occupied. Record of the Larvae of Pacific Mackerel ( Pn euraat o phoru s die go) , 1952. The comments under table VI are applicable here as well. No larvae were taken north of line 90, hence table starts with this line. Record of the Larvae of Rockfish (Sebastodes spp.)-, 1952. The comments under table VI are applicable here as well. Table I Record of Standardized Haul Factors for Oblique Hauls made with Plankton Nets during Cruises 33-43 in 1952 Cruise and Konth 33 34 35 35 36 37 38 39 40 41 42 43 Late Jan. Feb. liar. I'ar. Apr. May June July Aufc. Sept, Oct. Nov. 2.35 - 4.39 - - 2. 68 - 2.97 - 3.18 - - 3.08 - - - - 3.22 - NQ " - 3^37 _ - 4.86 - 1.37 - 2.09 2.42 - -3.08- - 2.58 - 2.93 - 1.71 ----- 1.91 2.97 - 2.89 - - - - 3.52 2.94 - 2.58 1.49 - 1.11 2.21 - - - - 2.30 - - - - 2.00 3.01 - 1.22 - 1.96 NQ 2.99 1.62 2.16 2.07 - - - 3.21 - 1.98 - 2.94 3.64 - 2.49 2.47 3.00 3.05 NQ - 2.94 - 2.92 2.32 - 1.96 2.48 2.92 1.68 2.77 NQ - - 1.62 2.77 2.76 2.18 2.91 2.83 3.02 - 2.96 2.40 2.99 2.85 3.21 - - 2.22 2.78 2.48 - 2.51 2.49 2.86 0.90 2.09 1.72 2.07 2.59 1.10 2.41 2.34 2.04 3.05 2.65 3.07 3.29 1.51 2.78 2.68 2.66 2.90 3.67 - 2.23 2.83 2.64 - 1.47 2.47 1.77 NQ 2.92 1.57 - 2.15 3.01 3.13 2.70 4.30 3.09 2.23 3.49 2.63 3.82 3.19 - 3.59 2.79 3.29 2.09 3.08 2.67 Table I (cont'd) Record of Standardized Haul Factors for .Obiioue Hauls made with Plankton "lets during Cruises 33-43 in 1952 Cruise and . bnth 33 34 35 35 Late 36 37 38 39 40 41 42 43 Sta. Jan. Feb. Mar . 1 iar . A or. May June July Aup . Sept. 1.04 Oct. Nov. 70.51 4.68 2.74 2.53 70.55 - - - - 2.73 2.82 2.06 - - - - - 70.60 - - - - 2.86 2.89 3.18 3.43 2.96 2.41 2.92 2.66 70.65 - - - - - 2.84 2.81 2.90 - - - - 70.70 - - - - 2.21 2.96 3.14 3.89 3.15 2.40 2.91 2.81 70.75 - - - - - - 3.11 - - - - - 70.80 - - - - 2.46 2.48 3.19 3.10 2.62 2.61 3.06 2.74 70.90 - - - - 2.09 2.79 2.62 3.24 - - - - 70.100 - - - - - 2.94 2.69 - - - - - 73.50 - - - - 1.21 2.52 1.79 1.15 2.60 1.26 (2.75) - 73.55 - - - - - 2.86 2.92 2.49 - - - - 73.60 - - - - 2.68 2.97 NQ 2.53 2.85 2.35 3.12 - 77.50 - - - - 1.50 2.70 2.07 2.70 2.58 1.32 - - 77.55 - - - - 2.38 2.99 3.21 3.06 3.10 3.15 3.25 2.88 77.60 - - - - - 2.91 3.04 3.41 - - - - 77.65 - - - - - 3.18 NQ 3.30 3.14 3.25 3.18 2.70 80.51 1.38 1.30 1.86 - 1.42 2.48 1.69 1.95 2.91 1.26 3.48 1.72 80.55 2.57 2.48 2.52 - 2.65 2.77 2.71 3.70 2.88 3.07 3.04 2.73 80.60 2.50 2.78 2.11 - 2.81 2.39 2.89 3.48 3.29 3.56 2.58 2.66 80.65 - - - - - - 3.19 2.54 - - - - 80.70 2.92 2.56 2.44 - 2.74 2.60 2.91 2.92 2.95 2.85 2.83 2.66 80.75 - - - - - - NQ - - - - - 80.80 2.60 2.88 2.69 - 2.37 2.46 2.52 3.34 2.85 3.05 2.48 2.86 80.85 - - - - - 2.87 - - - - - - 80.90 2.60 2.25 NQ - 2.82 2.66 2.65 1.87 3.06 3.04 3.07 2.80 80.100 2.60 2.78 - - 2.63 2.69 2.82 3.24 2.69 3.09 3.21 3.01 80.110 2.42 - - - - _ _ - - - _ - 83.43 - - - - - 2.68 2.41 - - - - - 83.55 - - - - 2.52 3.16 2.51 - - - - - 83.60 - - - - 2.86 2.58 1.76 - - - _ _ 83.65 - - - - - 2.79 - - - - - - 83.70 - - - - 2.14 2.91 2.94 - - - - - 83.75 - - - - - 2.91 2.62 - - - - - 83.80 - - - - 2.40 2.74 2.12 - - - - - 83.85 - - - - - 2.70 - - - - - _ 83.90 - - - - 2.17 2.79 2.76 - - - - - 85.38 1.12 1.52 1.60 - - - - 2.41 2.82 1.12 1.95 2.56 85.40 2.53 2.48 2.20 - - - - 2.63 2.62 2.69 3.38 2.54 85.45 - - - - - - - 2.92 - - - - 85.50 2.71 1.87 1.71 - - - - 2.58 3.10 2.33 3.26 2.59 85.55 - - - - - - - 3.21 - - - - Table I (cont'd) Record of Standardized Haul Factors for Oblique Hauls made with Plankton Nets during Cruises 33-43 in 1952 Cruise and Konth 33 ~l4~ 35 35 late 36 37 38 39 40 41 42 43 Sta. Jan. Feb. Mary Mar. A or. Kay June July Aup. Sept . Oct. Nov. 85.60 2.66 3.15 2.07 3.00 2.84 2.82 2.99 2.93 85.70 2.60 2.2? 2.41 - - - - 2.72 - - - - 85.80 - - - - - - - 2.56 - - - _ 85.90 - - - - - - - 3.24 - - - - 87.35 - - - - 1.90 2.95 1.95* - - - - - 87.40 - - - - 2.34 3.07 2.41 - - - - - 87.45 - - - ~ - 3.02 2.42 - - - - _ 87.50 - - - - 1.36 1.59 1.62 - - - - - 87.55 - - - - - 3.10 2.72 - - - - - 87.60 - - - - 2.90 3.43 3.30 - - - _ - 87.65 - - - - - 3.07 - - - - - _ 87.70 - - - - 2.8? 4.34 5.60 - - - - - 87.75 - - - - - 2.89 - - - - _ _ 87.80 - - - - 3.21 2.47 2.88 - - - - _ 87.90 - - - - 2.58 - - - - - _ _. 90.28 2.26 2.79 1.46 - 3.10 2.55 1.19* 2.86 2.40 2.32 2.97 2.37 90.30 2.42 2.58 2.39 - 2.45 2.18 1.90* 3.07 2.84 2.56 3.54 2.67 90.37 2.46 2.88 2.69 - 2.58 3.15 2.73* 2.68 2.73 2.75 - 2.74 90.45 2.40 2.69 2.84 - 3.31 2.35 3.35* 3.08 2.90 2.36 3.41 2.98 90.53 2.32 3.00 3.38 - 3.89 2.92 3.03* 3.02 2.89 2.87 2.97 2.79 90.60 2.35 2.49 2.82 - 3.09 2.73 3.68* 2.71 2.85 2.99 2.28 2.62 90.65 - - - - - 3.05 3.36 - - - _ _ 90.70 2.46 2.81 2.83 - 3.00 (3.11) 3.16 2.55 2.73 2.68 2.74 2.74 90.75 - - — - - 2.97 - - - - - - 90.80 2.47 3.10 2.65 - 2.63 2.39 2.85 3.15 - - - _ 90.90 2.84 2.66 2.74 - 2.50 2.63 2.86 2.95 - - - _ 90.100 - - - - 2.93 - 2.75 2.86 - - - _ 93.27 2.11 1.39 1.86 - 2.40 2.59 2.63 2.76 2.56 0.81 2.82 2.95 93.30 1.96 2.07 2.50 - 2.95 3.20 3.14* 2.78 2.35 2.25 2.27 2.80 93.35 - - - - - 3.27 3.22 3.14 - - - - 93.40 2.40 2.41 2.38 - 3.09 3.36 3.51* 2.86 2.60 3.03 2.63 2.31 93.45 - - - - - 3.24 3.53 2.31 - - - - 93.50 2.34 2.88 2.61 - 3.12 3.17 3.78-* 2.58 2.75 2.53 3.32 2.64 93.55 - . - - - - 2.90 3.50 3.02 - - - - 93.60 2.63 2.74 2.78 - 2.77 3.27 3.67* 2.75 - - _ _ 93.65 - - - - - 3.26 3.26 - - - - 93.70 2.56 3.34 2.85 - 3.04 2.99 3.52 3.09 - - - - 93.75 - - - - - 3.20 - - - - - - 93.80 - - - - 3.74 3.19 3.81 2.82 - - - - 93.90 - - - - 3.07 - - 2.92 - - - - * - An additional haul was made at this station. See supplement to Table 1. 10 Table I (cont'd) Record of Standardized Haul Factors for Oblique Hauls made with Plankton Hets during Cruises 33-43 in 1952 Cruise and Month 33 34 35 35 Late 36 37 38 39 40 41 42 43 Sta. Jan. Feb. Mar. Mar. Apr. May June July Aug. Sept. Oct. Nov. 97.30 1.28 1.07 1.70 1.66 1.93* 1.95 1.69 0.99 _ 1.61 97.32 2.41 2.62 2.84 - 2.84 - 3.04 3.42 2.53 2.04 3.18 2.1,2 97.35 - - - - - 3.68 2.83 - - - - - 97.40 3.03 2.93 2.60 - 2.88 3.15 3.07* 3.05 2.86 1.90 3.19 2.39 97.45 - - - - - 2.68 2.93 2.96 - - - - 97.50 2.56 3.17 2.67 - 2.97 2.86 3.34* 3.27 2.76 2.85 2.95 2.30 97.55 - - - - - 3.49 3.06 2.68 - - - - 97.60 2.30 1.88 2.94 - 3.29 4.14 3.26* 2.62 - - - - 97.65 - - - - - 3.98 3.14 - - - - - 97.70 2.58 2.87 4.10 - 2.85 3.82 3.19 3.18 - - - - 97.75 - - - - - 2.88 - - - - - - 97. BC - - - - 2.84 3.65 3.03 2.28 - - - - 97.90 - - - - 3.29 2.82 3.34 2.93 - - - - 100.29 1.24 - 1.48 - 1.76 1.76 1.82* 3.20 2.27 2.37 3.89 1.26 100.30 - 2.28 2.81 - 2.68 2.37 4.60* 2.85 2.72 2.12 2.80 2.16 100.35 - - - - - - 2.75* 3.13 - - - - 100.40 3.23 2.71 2.72 - 3.81 2.54 4.57* 3.33 2.32 2.97 2.13 1.81 100.45 - - - - - 2.36 3.53 2.74 - - - - 100.50 (0.94) 2.51 3.04 - 3.25 2.28 3.22* 2.72 2.50 3.09 3.15 2.76 100.55 - - - - - 3.48 3.31 3.32 - - - .-• - 100.60 - 2.41 2.02 - 3.20 2.98 3.04* 2.99 3.11 2.83 2.95 3.19 100.65 - - - - - 4.85 3.72 - - - - - 100.70 1.58 2.83 2.37 - 3.33 2.58 3.02 3.22 4.04 2.64 3.26 3.01 100.75 - - - - - 1.94 - - - - ■ - - 100.80 1.30 2.82 2.83 - 3.21 2.31 3.47 2.79 2.20 3.22 2.50 1.98 100.90 1.76 2.36 2.67 - 3.16 2.96 3.73 2.69 - - - - 100.100 - - - - 3.28 - 3.32 2.96 - - - - 103.30 _ - _ - 1.86 1.33 1.59* ■ - 3.07 2.06 1.87 2.39 103.35 - - - - 3.28 2.85 2.34* - 2.96 3.44 2.20 2.68 103.40 - - - - 3.18 2.66 2.74 - 2.74 2.85 2.29 2.44 103.45 - - - - - 2.26 - - - - - - 103.50 - - - - 2.97 2.S4 2.82 - - - - - 103.55 - - - - - NQ 3.77 - - - - - 103.60 - ' - - - 3.15 2.96 2.80 - - - - - 103.65 - - - - - 2.66 3.66 - - - - - 103.70 - - - - 3.18 3.17 3.15 - - - - - 103.75 - - - - - 2.40 2.91 - - - - - 103.80 - - - - 3.30 2.28 3.73 - - - - - 103.90 - - - - 3.17 2.84 2.48 - - - - - 11 Table I (cont'd) Record of Standardized Haul Factors for Oblique Hauls made with Plankton Nets during Cruises 33-43 in 1952 Cruise and Month 33 34 35 35 36 37 38 39 40 41 42 43 Late Sta. Jan. Feb. Mar. Mar. Apr. May June July Aug. Sept. Oct. Nov. 105.32 1.13 1.40 1.59 - - - - 1.80 - 105.35 2.12 2.76 2.57 - 2.71 - 105.40 2.51 2.86 2.45 - 3.18 - 105.45 ------- 3.28 - 105.50 2.94 2.44 2.65 - 3.35 - 105.55 ------- 2.43 - 105.60 2.83 3.06 2.82 - 2.78 - - - - 105.70 2.66 2.72 1.90 _ _ _ _ 2.89 - - - - 105.80 2.42 3.05 ----- 2.40 - 105.90 --__--_ 3.01 - 107.32 - _ _ - 3.18 2.13 3.51 - 2.96 2.79 1.95 1.58 107.35 - - - _ 2.95 2.16 3.21 -- 2.84 2.59 2.69 3.12 107.40 - - _ _ 3.15 2.46 3.10 - 3.89 3.07 - 107.45 ----- 2.20 3.27 ----- 107.50 - _ - - 3,59 4.56 3.02 ----- 107.55 ------ 3.03 ----- 107.60 - 3.47 2.57 2.97 ----- 107.65 ------ 3.59 _____ 107.70 - _ _ _ 3.16 2.65 3.38 ----- 107.80 _ - _ _ 3.07 2.70 2.97 ----- 110.33 1.22 1.38 - - 2.98 2.00 1.93 2.33 2.26 3.13 2.06 2.02 110.35 2.73 2.58 2.72 - 3.10 3.25 2.73 2.53 3.13 2.70 1.71 2.49 110.40 2.87 2.53 2.92 - 3.32 2.80 3.25 2.49 3.46 3.38 2.20 3.14 110.45 ----- 4.94 2.6I ----- 110.50 2.83 3.07 2.95 - 2.96 3.70 3.62 2.53 3.10 2.85 2.79 2.59 110.55 ------ 3.71 _____ 110.60 - 2.72 2.42 - 2.89 2.95 3.24 2.93 3.61 2.93 2.99 2.91 110.65 ------ 3.74 • _ - _ 110.70 2.80 3.06 2.68 - 2.95 3.46 3.56 2.26 - 110.80 3.28 2.71 - - 3.16 3.07 3.10 2.53 - - - - 110.90 2.17 3.18 - - 3.46 2.72 3.35 2.20 _ - - - 113.30 - 1.45 1.33 2.44 I.64 1.61 1.98 1.68 3.14* 2.41 1.34 2.22 113.35 - 2.98 2.66 3.08 3.00 3.17 2.76 2. si 2.57 - - 3.50 113.40 - 3.00 2.77 2.81 3.41 3.07 3.23 3.08 3.67 3.27 3.36 2.79 113.45 - - _ 2.93 - 2.53 3.57 2.92 - 113.50 - 2.96 3.06 3.19 - 3.18 3.94 2.62 - 113.55 - - - 3.35 - 3.10 3.24 2.54 - 113.60 - 2.80 2.74 2.84 2.82 3.14 3.25 2.65 - - - - 113.65 - 2.72 2.92 3.28 3.23 ----- 113.70 - 2.74 - 2.95 3.10 3.20 2.93 2.92 - - - - 12 Table I (cont'd) Record of Standardized Haul Factors for Oblique Hauls made with Plankton Nets during Cruises 33-43 in 1952 Cruise and Month 33 34 35 35 Late 36 37 38 39 40 41 42 43 Sta. Jan. Feb. Mar. Mar. Apr. May June July .AuR» Sept. Oct. Nov. 115.27 1.54 _ — _ _ _ _ _ 2.08 - - - 115.30 - - - - - - - - 2.48 - - - 115.35 2.92 - - - - - - - 2.63 - - - 115.40 2.56 - - - - - - - - - - - 115.50 3.08 - - - - - - - - - - - 115.60 3.12 - - - - - - - - - - - 115.70 3.03 - - - - - - - - - - - 117.26 - 1.54 2.08 2.06 2.78 1.51 1.87 1.76 2.75* 2.80 1.61 3.29 117.30 _ 1.45 1.43 2.78 2.78 1.78 1.60 1.85 2.44* 2.53 2.15 2.50 117.35 _ 2.55 1.63 3.14 3.00 3.06 3.70 1.65 2.34 - - 2.26 117.40 - 3.19 2.77 2.94 2.96 2.86 2.95 3.39 3.46* 3.31 2.12 2.57 117.45 - - - 2.77 3.13 2.19 3.18 2.46 - - - - 117.50 - 2.95 2.92 3.00 2.88 2.62 3.29 4.43 - - - - 117.55 - - - 3.22 3.18 3.61 3.83 4.26 - - - - 117.60 - 2.85 2.70 3.08 3.08 2.62 2.24 3.33 - - - - 117.65 - - - 2.70 3.01 3.02 3.14 - - - - - 117.70 - 2.84 - 2.98 2.85 3.38 3.32 3.24 - - - - 120.25 1.41 1.53 1.56 2.45 2.36 1.92 2.03 2.28 3.91* 1.34 2.36 2.64 120.30 1.64 1.79 1.72 2.60 2.63 1.96 1.82 1.84 2.22 1.97 1.50 1.81 120.35 1.73 2.10 1.48 2.38 2.66 1.51 2.11 1.59 1.82* 2.21 2.34 2.04 120.37 - - - - - - - 0.88 - - - - 120.40 - - - 2.31 1.46 1.30 1.89 - - - - - 120.45 2.60 3.40 3.05 2.81 3.03* 3.25 3.05 2.60 3.71 3.11 2.35 2.30 120.50 3.15 2.92 3.08 3.01 3.05 3.09 2.83 3.21 2.96 3.16 2.54 2.51 120.55 - - - 2.90 3.02 2.60 3.12 2.68 - - - - 120.60 3.58 2.57 2.70 2.62 3.12 2.87 3.25 2.11 2.64 3.12 1.98 2.41 120.65 - - - 2.95 2.95 2.77 3.27 - - - - - 120.70 3.18 2.94 2.73 2.82 3.02 3.39 2.68 3.12 3.48 3.71 2.65 3.13 120.80 3.15 2.93 3.77 2.66 3.04 2.34 3.09 3.27 3.36 3.06 2.39 2.42 120.90 3.54 2.83 2.78 2.77 2.95 2.93 2.98 2.08 3.41 3.29 3.05 2.89 123.37 1.53 1.76 1.63 1.78 2.58 1.28 1.52 1.31 2.34 2.45 1.63 1.27 123.40 1.93 2.92 2.77 2.83 3.16* 3.13 3.06 2.75 3.27 3.06 2.21 3.80 123.45 - - - 3.05 2.92* 4.10 3.04 2.46 - - - - 123.50 3.08 3.45 2.44 2.92 2.82 2.95 3.15 3.08 3.00 2.57 2.40 2.85 123.55 - - - 2.77 2.99 2.60 3.46 - - - - - 123.60 2.98 2.63 2.56 2.79 2.76 3.10 2.87 3.07 - - - - 127.34 1.52 - 1.62 2.51 2.42 1.47 1.94 1.46 2.22 3.44 1.54 1.26 127.40 3.01 - 2.70 3.06 3.13 3.24 3.21 3.26 2.85 2.92 2.00 - 127.45 - - - 2.76 3.32 3.37 2.92 2.88 - - - - 127.50 2.96 - 3.25 3.06 2.95 3.17 2.86 3.33 2.98. 3.28 2.45 3.06 127.55 - - - -2.96 2.92 2.72 3.12 - - - - - 127.60 3.09 2.86 3.07 2.77 2.85 3.23 2.88 3.09 - - - - 13 Table I (cont'd) Record o I; ul factors I'or Oblinue Hauls v-ts durinn Cruir.es 33-43 in 1952 Cruise a nd Mori 37 th 33 34 35 ! 36 39 40 41 42 43 Late Sta. Mar. ■ Kay June _J.uiy_ 1.06 Aug. 2.56 Sept. 2.49 Oct. 1.25 Nov. 130,30 1.67 1.58 1.58 2.68 1.41 1.83 1.58 . 2.87 3.01 2.7.3 3.26 3.18 2.66 3.22 2.76 2.36 2.80 130.40 2.97 2.93 2.90 2.70 3.51 2.90 2^7 2.92 3.22 1.60 130.45 - - - 2.76 3.21 2.71 2.99 2.47 - - - - 130.50 3.03 2.93 2.77 3.24 3.56 2.36 2.54 130.55 - - ~ 2.94 2.89 3.17 2,90 - - - - - 130.60 3.01 2.92 . 2.90 2.90 2.86 2.52 2.79 2.81 3.U 2.06 3.02 130.70 2.90 - - - _ - - - - - - 130.80 3.20 - - - - - - - - - - - 133.25 1.80 1.50 1.56 2./, 6 2.40 1.38 2 . 29 - 1.64 2.27 2.62 2.12 133-30 1.86 2.90 3.14 3.00 2.84 2.50 3.09 2.93 3.15 3.19 1.84 1.99 133.35 - - - 2.71 2.93 2.56 2.20 2.29 - - - - 133.40 3.39 2.85 2.69 2.63 2.66 3.01 2.10 - - - - 133.45 - - - 2.70 2.81 2.20 3.06 2.46 - - - - 133 . 50 3.24 2.71 2.71 1.87 2.67 2.62 MQ 3.03 - - - - 133.60 3. a _ - .7 2.92 - - - - - - - 137.23 1.57 2.57 1.31 2.15 . 1.12 1.60 0.90 3.80 1.69 1.70 2.06 137.30 2.29 2.20 2.72 :^.69 2 . 72 2.21 3.69 1.38 3.70 3.12 3.11 3.35 137.35 - - ... - 2.63 1.95 2.35 2.23 - - - - 137.40 3.30 2.57 3.11 2.85 2.56 2.49 2.59 2.34 - - - - 137.45 - - - 2.7b 2.29 2.79 2.04 - - - - 137.50 2.87 3.29 2.«9 - 3.00 2.60 2.96 2.49 - - - - 137.60 3.22 - - 2.76 2.67 - - - - - - - - 2.47 - - - - - - - - - - 2.68 - - - - - - - - - - 140. W - 3.03 - - - - - - - - - - 140.50 - 2.73 - - - - - - - - - - 143.26 - 1.62 - - - - - - - - - - 143.30 - 2.87 - - - - - - - - - - U3.35 - 2.70 - - - - - - - - - - 147.20 - 1.37 - - - - - - - - - - 147.25 - 4.54 - - - - - - - - - - 147.30 - 2.29 - - - - - - - - - - 150.19 - '2.35 - - - - - - - - - - 150.25 - 2.70 - - - - - - - - - - 150.30 - 2.A7 - - - - - - - - - - 150.40 - 2.99 - - - - - - - - - - 14 Supplement to Table I On several cruises, some stations were occupied two or more times. A record of standardized haul factors for these additional hauls follows: Cruise 36 Cruise 38 Cruise 40 Station S. Factor Station S. Factor Station S. Factor 120.45E 2.82 87.35E 2.85 113 .30E 2.09 123. 40E 3.06 90.28E 2.68 117.26E 2.24 123.45E 2.94 90.30E1 2.50 117.30E 2.41 90.30E2 2.71 117. 40E 2.76 90.37E1 2.63 120. 25E 2.54 90.37E2 2.68 120.35E 2.36 90.45E 2.6] 90.53E 2.91 90.60E 2.87 93.30E 2.47 93.AOE 2.96 93.50E 2.81 93.60E 3.02 97.30E 2.68 97.40E 3.03 97.50E 2.95 97.60E 2.79 100o29E 2.32 100. 3 0E 2.52 100. 35E 2.97 100.40E 3.10 100. 50E 2.82 100.60E 3.00 103. 30E 2.44 103 .3 5E 2.81 * 15 Table II Record of Sard! ne Eggs, 1952 Number of Normal ABC D Total Number of Ep.ps Ave, Station A B C D Unci. n n« Cruise 33: 90.28 0 0 U - 0* 0* 4 - 0 4 0 110.33 0 1 0 - 0* 5* 0* - 0 5 2 120.25 20 0 0 - 20 0* 0* - 40 60 0 120.30 16 131 2 - 16 157* 3 - 30 206 184 120.35 0 55 31 - 0 68* 38 ' - 2 108 69 123,3? 0 178 12 - 0 205* 15 - 18 238 222 123.40 2 0 - - 2* 0* - - 0 2 1 130.30 27 102 — - 30* 107 — — 0 137 30 Total 6T" 467 49 0 68 542 60 0 90 760 508 Cruise 34s t 117.50 3 47 9 - 3* 86* 9* - 12 110 37 120.25 0 367 55 - 0 724* 119* - 116 959 480 120.35 0 0 0 - 0* 4* 0 - 8 12 6 120.45 24 0 - - 279* 0* - - 0 279 140 120.50 3 0 26 - 3 0* 26* - 0 29 13 123.37 30 0 - - 65* 0* - - 0 65 32 130.30 0 0 2 - 0 0* 2* - 0 2 1 133.25 2 2 - - 2* 2 - - 0 4 2 137.23 0 131 - - 0* 218 - - 0 218 0 140.30 0 5 - - 0* 5 - - 0 5 0 143.26 0 2 — — 13 8* - - 0 21 8 Total 6"2~ 554 92 0 36T 1047 156 0 136 1704 719 Cruise 35 90.28 2 3 0 - 2* 3* 0* - 0 5 2 90.37 0 14 0 - 0* 22* 0* - 0 22 7 93.60 0 ' 0 0 8 0 0* 3* 8* 0 11 4 97.30 160 0 0 0 304 0* 0* 0 68 372 0 97.60 0 0 0 6 0 0* 0* 12* 0 12 4 105.50 0 19 37 56 0 19* 40* 58 0 117 30 110.50 6 6 0 - 9 24* 0* - 9 42 15 113.40 310 1820 357 - 745* 2282* 1227* - 338 4592 1531 117.26 0 0 0 10 0 0* 0* 15 0 15 0 117.50 6 555 82 - 15* 923* 444* - 88 1470 490 120.25 66 3 0 - 66* 12* 0 - 0 78 39 120.45 0 0 0 - 0 0* 24* - 0 24 12 123.37 0 13 0 0 0 18* 0* 0 3 21 10 123.50 0 0 17 - 0 0* 90* - 0 90 45 127.34 10 478 8 - 18* 67A* 80* - 104 876 292 133.25 0 0 - — 0* 3* — — 0 3 2 Total 560 2911 501 80 1159 3980 1908 93 610 7750 2483 1A Table II (cont'd) Record of Sardine Eggs, 1952 Numb A er of B Normal C Eggs D Total Numt ■er of : Eggs Ave, Station A B C D Unci. n n« Cruise 35 (Lat e March): 120. 40 2 25 16 - 2* 42* 21* - 0 65 22 120.45 20 11 3 - 104* 20* 3* _ 17 144 48 120.50 36 0 0 - 60* 0* 0* - 3 63 21 120.55 0 0 14 - 0* 0* 35* - 3 38 13 123.37 0 0 12 0 0 0* 66* 12* 4 82 123.40 20 14 14 3 57* 25* 25* 14* 40 161 h0 123.45 52 860 244 - 143* 1278* 518* - 299 2238 746 127.34 0 0 0 22 0 0* 38* 42* 0 80 27 127,40 0 0 196 496 0 0* 615* 1205* 49 1869 623 127o45 0 66 157 - 0* 121* 235* - 11 367 122 127.50 0 61 355 - 0* 126* 594* - 12 732 244 127.55 0 0 0 - 0* 0* 9* - 0 9 3 130.35 0 0 71 — 0* 0* 118* - 0 118 39 Total 130 1037 1082 521 366 l6l2 2277 1273 438 5966~ 1975 Cruise 36 . 87.35 0 25 0 - 0* 42* 0* _ 2 44 15 93.50 0 0 0 6 0 0* 0* 12 3 15 0 93.60 0 0 0 - 11* 0* 0* - 0 11 4 93.70 0 27 0 0 3* 40* 0* 0 3 46 15 97.50 0 0 0 0 0 3* 0* 0 0 3 2 103.40 0 0 0 - 0 0* 3* - 0 3 2 113.40 0 167 20 - 0 167* 164* - 58 389 194 117.26 0 6 28 - 0* 8* 44 - 0 52 4 117.45 25 232 44 - 25 300* 53* - 44 422 197 117.50 3 0 0 - 3* 0* 0* - 6 9 3 117.60 0 0 6 - O* 0* 6 - 0 6 0 120.40 0 3 88 - 0 3* 174* _ 3 180 90 120.45 0 754 870 - 0 960* 1215* - 61 2236 1118 120.45E 3 3 6 - 3* 6* 17 - 3 29 5 120.50 3 12 6 - 3* 21* 15 - 0 39 12 120,55 840 423 202 - 1613* 667* 396 - 187 2863 1220 120.60 3 19 34 - 22* 47* 175 - 6 250 36 123.37 0 31 16 57 0* 46* 16* 181 0 243 21 123.40 0 28 10 - 0* 38* 16* _ 6 60 20 123. /)0E 9 0 0 - 31 3* 0* _ 6 40 2 123.45 12 140 418 - 20* 149* 514 - 0 683 84 123. 45E 0 109 1246 - 0 124* 1485* - 0 1609 804 123.50 169 265 28 - 225* 367* 34* - 68 694 231 127.40 0 0 69 0 0 0* 163* 3 3 169 83 127.45 0 3 80 - 0 3* 249* - 20 272 136 130.60 0 0 12 - 0* 0* 12 - 0 12 0 Total " L067" 227,'7~ 3183 '63 1959 2994 4751 196 479 10379 4298 17 Table II (cont'd) Record of Sardine Eggs, 1952 Number of A B Normal C Errs D Total Number of EBg§ Ave, Station A B c D Unci. n n« Cruise 37 . 90.28 0 204 0 „ 0* 581* 0* - 41 622 207 90.37 0 3 0 - o* 3* 0 - 0 3 2 93.27 0 3 0 0 0 3* 0* 0* 0 3 1 93.35 0 0 3 - 0 0* 3 - 0 3 0 93.40 3 0 3 - 10 0* 3* - 0 13 2 93.50 0 54 51 41 0* 120* 104* 89 23 341 81 93.55 0 G 0 - 0* 0* 9* - 3 12 4 97.40 0 6 0 - 0 10* 0* - 0 10 5 113.35 54 577 0 - 73* 1246* 19 - 101 1439 708 113.40 0 0 0 ~ 0 3* 0* - 3 6 3 117.26 0 0 0 G 0* 0* 0* 2 0 2 0 117.35 0 9 128 - 0* 9* 196 - 0 205 4 117.40 11 0 94 - 26* 0* 146 - 6 178 13 117.45 0 0 13 - 0 0* 24 - 0 24 0 117.50 0 154 102 - 0 309* 493 - 66 868 334 120*25 0 0 4 - 0 0* 4* - 0 4 2 120.30 0 0 18 - 0 0* 41* - 0 a 20 120.35 103 36 6 - 622 42* 6 - 220 890 55 120,40 0 5 91 - 0 6* 104* _ 0 110 55 120.45 318 110 494 - 647* 124* 676 - 78 1525 406 120.50 9 28 34 - 12* 40* 49 - -3 > 104 27 120.55 0 0 0 - 0* 0* 13* - 8 21 7 123.40 0 69 241 31 0 72* 523* 160* 448 1203 401 123.55 8 3 13 - 23* 13* 21* - 3 60 20 127.45 0 20 37 17 0 24* 84* 44* 40 192 64 133.50 3 0 — - 3* 0* - - 0 3 2 Total 509 3281 1332 89 1416 2665 2518 295 1048 7882 2423 18 Table II (cont'd) Record of Sardine Eggs, 1952 Number of A Normal C ERRS D Tota 1 Number of Epp.s Ave, Station A B C D Unci. n n« Cruise 38 , 90.65 0 3 0 - 0* 7* 0* - 0 7 2 93.50 0 0 38 8 0* 0* 53* 8 0 61 18 97.40E 3 9 - - 3* 18* - - 0 21 10 100.30E 0 0 5 - 0* 0* 5* - 0 5 2 110.45 0 0 13 - 0 0* 18 - 0 18 J 110.50 0 7 123 - 0 7* 134 - 0 141 7 U0. 60 0 0 0 - 0* 0* 3 - 0 3 0 113.40 84 191 68 - 97* 229* 74 - 3 403 164 113.50 0 4 0 - 0 4* 0* - 0 4 2 113.55 0 65 36 - 0 84* 52* - 10 146 73 117.55 0 448 226 - 0 548* 329* - 123 1000 500 120.30 74 7 7 - 118 7* 7 - 37 169 8 120.35 0 473 295 - 0 540* 338* - 152 1030 515 120.40 0 4 - - 0* 4* - - 0 4 2 120.45 15 21 15 - 27* 37* 21* - 0 85 28 120.50 0 6 8 - 8* 8* 23* - 0 39 13 120.55 9 16 3 - 28 59* 6 - 28 121 78 123.37 0 0 0 0 0 6* 0* 0* 3 9 3 123.40 0 0 15 12 0 0* 28* 28 3 59 15 127.45 0 6 20 - 0* 14* 41* - 0 55 18 137.23 922 282 - — 1315 310* — - 51 -1676 320 Total 1107 1542 872 20 1596 1882 1132 36 410 5056 1778 Cruise 39 . 85.40 0 0 5 0 0 0* 5* 0* 0 5 2 90.30 0 3 55 - 0 12* 68 - 12 92 14 113.55 0 0 10 - 0 0* 20 - 0 20 0 117.26 0 0 18 28 0 0* 18* 39 0 57 9 117.30 0 0 0 0 0 0* 0* 4 0 4 0 120.35 693 168 14 - 747* 176* 14 - 5 942 464 120.37 0 33 2 - 0 35* 6 - 6 47 40 123.50 0 9 0 - 0* 12* 3 - 0 15 6 Total 693 213 104 28 747 235 134 43 23 1182 535 19 Table II (cont'd) Record of Sardine Eggs, 1952 Nurnbenr of A B Normal C Efips D Total Number of Eggs Ave Station A B C D Unci. n n« Cruise 40: 90.30 0 0 0 - 0* 0* 3 0 3 0 117.26 0 110 8 - 0* 116* 6 0 124 58 117.26E 0 0 4 0 0 0* 4* 0* 0 4 1 120.25 0 0 - - 4* 0* - 0 4 2 120. 25E 2 10 - - 2* 10* - - 0 12 6 120.30 0 0 4 - 0 0* 4 0 4 0 120.35 404 630 - - 646 774* - 0 1420 774 120.35E 0 510 - - <; 677* _ _ 0 682 677 130.30 1137 0 4o - 2319* 0* 62 0 2381 1160 130.35 0 0 ~ — 0 3* - 0 3 3 Total 1543 1260 62 0 2976 1580 81 0 0 4637 2681 Cruise 41: 117.26 423 - - - 448* - - 0 448 448 120.25 0 4 4 - 0 9* 13 0 22 9 120.30 4 61 - - 8 65* - 0 73 65 120.35 442 49 - - 1392 55* _ 0 1447 55 123.37 1813 0 - - 1833* 0 - 0 1833 1833 123.40 95 0 — — 101* 0 - - 0 101 101 Total 2777 114 4 0 3782 129 13 0 0 3924 2511 Cruise 42: 123.37 5 18 - - 5* 18 - 0 23 5 127.34 57 - — - 74* - - - 0 74 74 Total 62 18 0 0 79 18 0 0 0 97 79 Cruise 43 I: 117.26 3 0 - - 3* 0* - - 0 3 2 123.37 0 2 — — 0 2* - - 0 2 2 Total 3 2 0 0 3 2 0 0 0 5 4 20 co C- COH -3 O sO ^ i-i O ■a CM i/N CM H COO -* 3 O CM i-l O O O 4-OW(\lrl v tO iH rH CO ( OMVrHH CM vO CM CJ OO OO CM o SO CM ir\ cm -* rH r-> cm o CM CO O CM CO O ^ .O CO lAvO O 00 o i-t CM SO ^J CM C- ITS CM rH i-l O CM -* SO vO CM ir\ no o CO -J CM rH co oc O- r-i CO O- CM 00 rH OO u^ -^ so CM so o -4 CO rH O ■3 rH r-i CO CO COO .O^^C JOOiAOnO CO CM CO CO -3 I I CO -J- CO CM -* CM -* CMCMCMCOCOrr.ro C" a mOmoOm«N^ ooOOu^coOOO^NOOcoo- inO-OCOCOCO-J-lOCMcO-jLO-JCOUOCMCMCO^fCOCOCMCM CM rH ■HCOvO ••••••«••••• £• •oroc— c^c^oooocooococ^r-c^oocor~c—o OCOrHrHrHrHrHCMCMCMCMCMroCOCOCOCOCO-3'-*-4-4-i>^ OCr-C^iHHrHrHrHi-lrHrHiHrHiHi^iHrHrHrHrHrHrHrHrHi-H ^CM^^O^COlf\-^CMrHC0C0CMCQC>U\rHrHOOC'"\-O--* F\ ri O <£ H O O- rl 1T^ ^' O -T^^ K ^ ^ ^O J ^ ri ^ -*co CO CM lO CM cm ev ^~- o .s - 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Feb. I-.ar. L'ar. Apr. May June _ July Au.^. Sept. Oct. Uov. 85.60 14 85.70 11 - - - - 85.80 - _ - - - - 85.90 _ - - - - - 87.35 _ - - 4 87.40 - - - 3 87.45 - - - - 87.50 _ - - 0 87.55 _ - - - 6 87.60 - - - 20 87.65 - - - - 6 - 87.70 - - - 37 9 11 87.75 _ - - - - 87.80 _ - - 84 2 3 87.90 - - - - - 9C28 3 - 90.30 2 46 7 - 2 90.37 6 8 - 10 90.45 5 11 2417 - 56 90.53 10000 2136 - 97 12 6 90.60 371 189 - 62 90.65 - - - - 6 90.70 144 - 2922 (65) 90.75 - - - - 27 - 90.80 3156 - 166 17 90.90 3 1080 - 1935 10 90.100 - - - 993 - 93.27 4 13 - 22 3 93.30 4 155 - 35 6 93.35 - - - - 93.40 257 - 74 2 93.45 - - - - 7 93.50 3 2754 - 368 3 2 93.55 - - - - 3 4 93.60 634 - 385 3 93.65 - - - - 29 93.70 83 - 158 27 93.75 - - - - 38 - 93.80 - - - 1017 26 93.90 - - - 476 - - 60 Table VI (cont'd) Record of the larvae of Hake (i.erluccius productua) , 1952 Cruise and I.'onth 33 34 35 35 36 37 38 39 40 41 42 43 Late 3ta. Jan. F^b. liar. Kar. Apr. May June July Aug. Sept. Oct Nov. 37 - - 7 46 6 2 - 11 3 48 6 8 - 7 6 234 8 1 - 4 9 142 4 2533 691 18 97.30 2 97.32 2 21 292 97.35 - 97.40 273 97.45 - 97.50 152 £ 97.55 - 97.60 49 2067 97.65 - 97.70 3 1361 97.75 - 97.80 - 97.90 - 100.29 - 15 100.30 - 2 36 - 30 100.35 ------ 100.40 68 57 - 53 100.45 ----- 100.50 9-84 100.55 ----- 100.60 - 507 58 6 100.65 ----- 100.70 100.75 ----- 100.80 3 11 - 10 100.90 948 - 22 100.100 - - - 220 103.30 11 103.35 - - - - 103.40 25 103.45 ----- 2 103.50 184 103.55 ----- NQ 103.60 - - - - 19 103.65 ----- 103.70 25 103.75 ----- 103.80 59 103.90 - - - - 231 61 Table VI (cont'd) Record of the Larvae of Hake (I'erluccius productus) , 1952 Cruise and Month 33 - - 10 - - 93 - - 3 - - - - 29 - - 6 - - 25 33 34 35 35 36 37 38 39 40 41 42 43 Late St a. Jan. Feb. Har. Mar, Apr. Kay June _ July Aup. Sept. Oct. Nov. 105.32 _ - _ - - _ - - 105.35 105.40 105.45 105.50 105.55 105.60 105.70 105.80 105.90 107.32 - 17 107.35 107.40 107.45 107.50 107.55 ----- 107.60 - _ _ _ 107.65 ----- 107.70 - 107.80 34 110.33 110.35 110.40 110.45 110.50 110.55 110.60 110.65 110.70 110.80 110.90 113.30 113.35 113.40 113.45 113.50 113.55 113.60 113.65 113.70 62 7 - - 6 831 22 - 6 5 41 - 20 3 324 - 6 27 - 5 - 41 36 21 - 340 649 18 39 3600 3 34 7 - - 20 - 18 45 - - - 7 - 3 25 14 42 - - 11 41 3 - 6 3 Table VI (cont'd) Record of the Larvae of Hake; (Merluccius productus) , 1952 Cruise and Konth 33 34 35 35 36 37 38 39 40 U 42 43 Late Sta. Jan. Feb. Kar . Mar. Apr. I 'ay June July Aur. Sept. Oct. Nov . 115.27 _ _ _ . 115.30 - - - - _ 115.35 - - - _ 115.40 - - - _ 115.50 - - - _ 115.60 - - - _ 115.70 - - - _ 117.26 - 2 117.30 - 3 117.35 - 3 5 60 21 117.40 - 3 66 18 3 117.45 - - - 28 117.50 - 3 204 3 117.55 - - - 117.60 - 116 3 117.65 - - - 8 117.70 - - 120.25 3 120.30 16 2 47 120.35 2 10 14 120.37 - - - - _ 120.40 - - - 1 120.45 3 7 79 3 120.50 6 3 120.55 - - - 3 120.60 3 120.65 - - - 120.70 3 120.80 120.90 3 123.37 69 20 26 3 123.40 4 368 116 6 2 123.45 - - - 9 10 123.50 156 9 51 123.55 - - - 6 123.60 127.34 2 - 11 25 5 127.40 - 148 159 25 10 127.45 - - - 144 7 3 127.50 - 36 6 127.55 - - - 30 3 127.60 3 3 63 Table VI (cont'd) Record of the Larvae of Hake Q-erluccius productus), 1952 33 34 35 Cn 35 lise and Month 36 37 38 39 40 41 42 43 Late Sta. Jan. Feb. Mar. i Mar. . _AE£v_ May _June July Aug. Sept . Oct. Nov, 130.30 2 2 130.35 37 9 31 3 6 130.40 119 19 314 15 29 130.45 - - - 61 93 - - - - 130.50 9 32 68 16 15 8 130.55 - - - 6 38 - - - - 130.60 3 22 35 130.70 - - - - - - - - - - 130. 80 - - - - - - - - - _ 133.25 2 59 10 - 133.30 3 60 23 133.35 - - - 16 9 3 - - - - 133.40 60 11 116 5 3 - - - - 133.45 - - - 8 14 - - - - 133.50 26 - 22 3 MQ -' - - - 133.60 - - 9 - - - - - - 137.23 4 4 137.30 373 535 38 3 87 137.35 - - - - 247 6 - - - - 137.40 211 13 103 Ill 90 - - - - 137.45 - - - 12 - - - - 137.50 3 26 - 15 3 - - - - 137.60 - - - - - - - - 140.30 - 32 - - - - - - - - 140.35 - 233 - - - - - - - - - - 140.40 - 158 - - - - - - - - - 140.50 - - - - - - - - - - 143.26 - 2 - - - - - - - - 143.30 - 23 - - - - - - - - - 143.35 - - - - - - - - - - 147.20 - - - - - - - - - 147.25 - - - - - - - - - - 147.30 - - - - - - - - - - 150.19 - - - - - - - - - 150.25 - 8 - - - - - _ - - - 150.30 - - - - - - _ - - - 150.40 - - - - - - _ - - - Totals 784 17224 24081 1238 15020 466 108 64 Table VII Record of the Larvae of Pacific i'ackerel ( Pneumat o chorus die^o) , 1952 Cruise and Month 33 34 35 35 36 37 38 39 40 41 42 43 Late St a. Jan. Feb. Liar. I.ar. Apr. I lay June July Aufl. Sent. Oct. Nov , 90.28 90.30 - 25 90.37 90.45 90.53 - 3 90.60 90.65 ----- _____ 90.70 90.75 ----- ______ 90.80 - - 90.90 - - 90.100 ___-3- ____ 93.27 93.30 93.35 ----- ____ 93.40 93.45 ----- ____ 93.50 - 10 93.55 ----- 12 - . - 93.60 - 11 93.65----- _____ 93.70 - - 93.75 ----- ______ 93.80 ____ 4 ____ 93.90 _--- __3____ 97.30 97.32 97.35 -----4 _____ 97.40 97.45 ----- 5 18 97.50 97.55 ----- ____ 97.60 - - 97,65 ----- _____ 97.70 - 3 - 97.75 ----- ______ 97.80 _-__ ____ 97.90 ____ 10 3---- 100.29 100.30 100.35 ----- ____ 100.40 100.45 ----- ____ 100.50 100.55 ----- ____ 65 Table VII (cont'd) '.coord of the Larvae of Pacific Mackerel (Pncumatophorus dia/'o) , 1952 Cruise and Month 33 34 35 35 36 37 38 39 '40 41 "42 43 Late Sta. Jan. Feb. I.'ar. far. Apr, Kay June July Aun ._ Sept. Oct. Nov , 100.60 100.65 _____ 4_____ 100.70 100.75 ----- ______ 100. BO - 4 100.90 - - 100.100 - - - - - ____ 103.30 - 103.35 - 103.40 - 103.45 _____ ______ 103.50 ____ _____ 103.55 ----- _____ 103.60 _____ 103.65 ----- _____ 103.70 ____ 6 _____ 103.75 ----- _____ 103.80 - - _ _ 22 ----- - 103.90 _____ 105.32 ____ ____ 105.35 ____ ____ 105.40 _-__ ____ 105.45 ------- ____ 105.50 ____ ____ 105.55 ------- - 105.60 ____ ____ 105.70 ____ ____ 105.80 _____ 2 107.32 - 107.35 - - - - 107.40 _ _ _ _ _ - 107. 45 ----- _____ 107.50 _--- _____ 107.55 ------ _____ 107.60 _--- _____ 107.65 ------- _____ 107.70 -__- _____ 107.80 ---_ _____ 110.33 — 4 110.35 110.40 110./.5 ----- __-__ 110.50 110.55 --__-- _____ 66 Table VII (cont'd) Record of the Larvae of Pacific Mackerel ( Pneumato ohorus dier:o) , 1952 Cruise and ' lionth 33 34 35 35 36 37 38 39 40 41 42 43 late Sta. _ Jan, Feb. Mar. I'ar. Anr. Hay June July Aur:. Sept. Oct. Hov, 110.60 - 9 110.65 ------ _____ 110.70 - _ _ _ 110.80 - 6 - 110.90 - - - 113.30 113.35 113.40 - 3 113.45 --- - ____ 113.50 - - _ _ _ _ 113.55 --- - ____ 113.60 - - 113.65 --- _____ 113.70 - - - 115.27 _______ __ 115.30 -_--_-_- -- 115.35 _______ -_ 115.40 ____-__--_- 115.50 ___________ 115.60 ___________ 115.70 _____-_-_-- 117.26 - 2 117.30 117.35 - 4 117.40 117.45 - - 117.50 - 3 - 117.55 _-- 4 54 ____ J 17.60 - - 117.65 _-- _____ 117.70 - - 120.25 5 120.30 2 13 2 I 1.35 12 21 120.37 _------ ____ 120.40 -__ _____ i.45 6 29 2 120.50 6 120.55 --- 3 ____ 120.60 120.65 __- _____ 120.70 120.80 120.90 67 Table VII (cont'd) ilecord of the Larvae of Pacific i ackerel ( Pneuraa t opho ru s Jiero), 1952 Cruise and Korvbh 33 34 35 35 Late 36 37 38 39 40 41 42 43 Sta. Jan. Feb. . Mar. _ J ■ar« Jvor . _ . a v .June July Aug. Seot. Oct. Nov, 123.37 29 3 123.40 3 12 7 123.45 - - - 4 - - - - 123.50 123.55 - - - - - - - - 123.60 - - - - 127.34 - 18 38 127.40 - 34 19 - 127.45 - - - 28 53 3 - - - - 127.50 - 127.55 - - - - - - - - 127.60 - - - - 130.30 20 6 130.35 16 130.40 3 130.45 - - - 22 - - - - 130.50 26 130.55 - - - - - - - - 130.60 5 6 67 3 130.70 - - - - - - - - - - - 130.80 - - - - - - - - - - - 133.25 14 133.30 133.35 - - - 6 - - - - 133.40 - - - - 133.45 - - - - - - - 133.50 - NQ - - - - 133.60 - - - - - - - - - 137.23 3 1 5 137.30 2 137.35 - - - - - - - — 137.40 - - - - 137.45 - - - - - — — 137.50 - - - - — 137.60 - - - - - - - - — 140.30 - - - - - - - - - — 140.35 - 5 - - - - - - - - - - 140.40 - - - - - - - - - - — 140.50 - - - - - - - - - - ~ 143.26 - - - - - - - - - ~ 143.30 - - - - - - - - - - — 143.35 - - - - - - - - - ~ — 147.20 - 38 - - - - - - - ~ "■ 147.25 - - - - - - - - - - — 147.30 - - - - - - - - - — ~ Totals 5 43 20 34 184 150 116 95 43 104 46 10 68 ble VIII Record of the Larvae of P.ockfish (Sebastodes spp.), 1952 Cruise and 1-onth 33 34 35 35 36 37 38 39 ^u U 42 43 Late Sta. Jan. Feb. !!ar. l Sept . Oct. KTov 85.60 309 9 35 _ _ 12 11 8 3 85.70 5 - - - - 22 - - - - 85.80 - - - - - - - 10 - - - - 85.90 - - - - - - - - - - - 87.35 - - - - 228 15 20 - - - - - 87.40 - - - - 68 10 - - - - - 87.45 - - - - - 3 14 - - - - - 87.50 - - - - 54 100 2 - - - - - 87.55 - - - - - 146 131 - - - - - 87.60 - - - - 9 110 132 - - - - - 87.65 - - - - - 31 - - - - - - 87.70 - - - - 26 90 - - - - - 87.75 - - - - - 14 - - - - - - 87.80 - - - - 9 - - - - - 87.90 - - - - - - - - - - - 90.28 23 14 9 - 25 18 14 7 3 7 90.30 68 8 146 - 238 15 13 6 91 29 90.37 47 92 43 - 142 25 43 19 3 3 - 90.45 29 94 40 - 285 40 66 6 7 90.53 9 315 - 74 146 15 12 90.60 8 8 - 8 3 9 8 90.65 - - - - - - - - - - 90.70 3 - 3 90.75 - - - - - - - - - - - 90.80 - 3 - - - - 90.90 - - - - - 90.100 - - - - - - - - - 93.27 59 1 56 - 216 13 20 6 71 93.30 18 4 45 - 44 19 20 8 5 4 22 93.35 - - - - - 42 16 - - - - 93.40 5 34 40 - 52 44 30 6 3 5 93.45 - - - - - 49 92 18 - - - - 93.50 35 12 60 - 140 95 10 5 93.55 - - - - - 116 21 6 - - - - 93.60 118 - 3 85 6 - - - - 93.65 - - - - - - - - - - 93.70 - - - - - 93.75 - - - - - - - - - - - 93.80 - - - - 4 - - - - 93.90 - - - - - - - - - - 71 Table VIII (cont'd) Record of the Larvae of Kockfish (Sebastodes snp.), 1952 Cruise and Lonth 33 34 35 35 36 37 38 39 40 41 42 43 Late Sta. Jan. Feb. liar. I'.ar. Apr. Lay _June July _ Aug. Sept. Oct. Nov. 97.30 17 46 19 - - 50 22 8 3-11 97.32 36 18 8 - 37 3 7 2 12 97.35 26 37 97.40 12 26 - 6 69 35 9 29 8 3 97.45 ----- 236 79 - 97.50 3 29 - 119 6 74 6 3 97.55 ----- 4 202 8 - - - - 97.60 74-43 165 5 97.65 ----- 38 97.70 33-6 - _ _ _ 97.75 __-__ ______ 97.80 -__-3 -___ 97.90 _-_-3 -_-_ 100.29 5 - 30 255 25 3 10 16 11 100.30 - 212 82 - 177 19 4 34 13 100.35 ------ io 3---- 100.40 49 24 25 36 2 2 100.45 19 35 6 100.50 3 - 3 30 35 3 100.55 -----52 60 7--=.-- 100.60 - 14 18 26 100.65 -----24 15----- 100.70 - 6 100.75 ----- _-___- 100.80 100.90 100.100 - - - - 103.30 277 16 1 4 4 103.35 - - - - 112 3 6 - 3 9 3 - 277 16 1 112 3 6 10 29 8 - 36 - 103.40 - 103.45 - 103.50 _ _ _ - 143 8 6 103.55 ----- NQ 8 103.60 3 14 103.65 ----- 103.70 - 103.75 ----- 103.80 - 2 103.90 - 72 Table VIII (cont'd) Record of the Larvae of Itockfish (Sebastodes spp.), 1952 Cruise and l-.onth 48 13 15 17 22 13 9 - 7 68 32 9 - 5 33 6 33 34 35 35 36 37 38 39 40 41 42 43 Late Sta. Jan. Feb, liar. I'.ar. Ar>r. I- "ay June July Aup. Sept. Oct. liov, 105.32 93 27 18 4 105.35 15 17 54 - - - - 11 - 105.40 2 3 - - - 105.45 ------- ___ 105.50 8---- 3-__- 105.55 ------- 5__-_ 105.60 6 ____3-_-_ 105.70 34---- ____ 105.80 _-___ ____ 105.90 ------- ____ 107.32 ----48 13 - 645 107.35 - 15 17 22 3 107.40 107.45 107.50 107.55 107.60 107.65 107.70 107.80 110.33 29 37 119 8 2 16 110.35 8 110.40 110.45 110.50 110.55 110.60 110.65 110.70 11 110.80 110.90 113.30 - 48 160 29 23 14 3 3 42 113.35 113.40 113.45 113.50 113.55 113.60 113.65 113.70 73 37 - - 119 8 21 5 - 143 13 3 2 9 - 10 36 - - - - 10 8 - - — 6 4 7 - - - 6 - - - 3 48 160 29 23 14 104 27 3 3 _ 3 - - 3 6 10 - - 3 3 t'd) Record i ides spp,), 1952 Jan. Feb. . ine__July :\a<-_. Sept. Oct, 115.27 _______ 115.30 _-- ___._ 115.35 ------- 115.40 ---------- 115.50 - _____-_- 115.60 - - - - - - - -.- 115.70 - - - 117.26 117.30 117,35 117.40 117.45 117.50 117.55 117.60 117.65 117.70 120.25 120.30 120.35 120.37 120.40 120.45 3 120.50 120.55 120.60 120.65 .70 120.80 120.90 123.37 123.40 2 123.45 123.50 123.55 123.60 127.34 127.40 127.45 127.50 127.55 127.60 74 22 8 6 15 7 2 9 9 11 22 J4 22 64 101 25 6 21 15 22 119 32 181 9 7 - - 2 19 - - 9 20 13 3 - - - 14 3 4 4 - : - - 3 - - - 11 - 3 6 4 9 — - 2 21 24 39 45 18 4 37 8 66 6 - - - - - - 4 - - - - 48 2 1 10 - - 3 497 3 3 4 3 27 24 6 9 16 - - 3 5 12 13 3 - - — " 4 11 28 21 72 120 64 6 36 57 2 12 21 _ _ 18 9 6 k 3 3 2 6 - 92 50 37 32 47 3 10 10 - - 1] 23 7 9 - 6 3 - - 15 - Table VIII (cont'd) Record of the Larvae of ttockfish (Sebastodes spp.)» 1952 Cruise and rlonth 33 34 35 35 36 17 38 39 40 /,i 42 43 Late Sta. Jan. Feb. Mar. Har. _ Apr . _ . iay__ June July _ Aurr. Sept. Oct. Nov. 130.30 3 2 35 3 26 130.35 90 8 3 6 130.40 161 3 3 7 9 130.45 - - 130.50 9 15 130.55 --- _____ 130.60 3 130.70 ___________ 13o. 80 ___________ 133.25 25 14 133.30 9 63 23 133.35 _-- 37 ____ 133.40 3 3 - 133.45 - - - - 133.50 - NC. 3 133.60 -- _______ 137.23 2 137.30 8 44 1 15 137.35 ----5 ____ 137.40 26 2 - - - - 137.45 - - - 23 - 137.50 - 15 137.60 -- _______ 140.30 7 ------ -- 140.35 - __________ 340.40 - __________ 140.50 - __________ 143.26 - _______ __ 143.30 - __________ 143.35 - __--___--_ 147.20 - _______ __ 147.25 - ___._----- 147.30 - __________ 150.19 - -_-__-- __ 150.25 - __________ 150.30 - __________ 150.40 - __________ Totals 1523 2485 3155 662 4511 2672 3155 1843 419 292 547 433 75 BIBLIOGRAPHY Papers containing information about plankton hauls, plankton volumes, and standardized numbers of fish eggs and larvae obtained on survey cruises of the California Cooperative Oceanic Fisheries Investigations since their initiation in March 1949 are the following: AHLSTROM, ELBERT H. 1952. Pilchard eggs and larvae and other fish larvae, Pacific coast, 1950. U. S. Dept. Interior, Fish and Wildlife Service, Spec. Sci. Rept.: Fisheries No. 80, 58 pp. 1953* Pilchard eggs and larvae and other fish larvae, Pacific coast, 1951. U. S. Dept. Interior, Fish and Wildlife Service, Spec. Sci. Rept.: Fisheries No, 102, 55 pp. STAFF, SOUTH PACIFIC FISHERY INVESTIGATIONS 1952. Zooplankton volumes off the Pacific coast, 1951. U. S. Dept. Interior, Fish and Wildlife Service, Spec. Sci. Rept.: Fisheries No. 73, 37 pp. 1953. Zooplankton volumes off the Pacific coast, 1952. U. S. Dept. Interior, Fish and Wildlife Service, Spec. Sci. Rept.: Fisheries No. 100, 41 pp. In Press. Zooplankton volumes off the Pacific coast, 1949 and 1950. U. S. Dept. Interior, Fish and Wildlife Service, Spec. Sci. Rept.: Fisheries. 76