56 SIZE DISTRIBUTION OF PINK SHRIMP, Penaeus duorarum, AND FLEET CONCENTRATIONS ON THE TORTUGAS FISHING GROUNDS SPECIAL SCIENTIFIC REPORT-FISHERIES Na 356 United States Department of the Interior, Fred A. Seaton, Secretary Fish and Wildlife Service, Arnie J. Suomela, Commissioner Bureau of Commercial Fisheries, Donald L. McKernan, Director SIZE DISTRIBUTION OF PINK SHRIMP, Penaeus duorarum, AND FLEET CONCENTRATIONS ON THE TORTUGAS FISHING GROUNDS by Edwin S. Iversen, Andrew E. Jones and C. P. Idyll This work was financed by the Bureau of Commercial Fish- eries under Contract Nos. 14-17-008-7 and 14-17-008-23, with funds made available under the Act of July 1, 1954 (68 Stat. 376), commonly known as the Saltonstall-Kennedy Act. United States Fish and Wildlife Service Special Scientific Report--Fisheries No. 356 Washington, D. C. August I960 CONTENTS Page Introduction 1 The fishery 1 Purposes of the study 2 Acknowledgments 3 Methods and materials 3 Vessels and gear 3 Observations of fleet activity 5 Shrimp discards 6 Treatment of data 6 Size distribution of shrimp 6 Sampling variation from single and double nets 6 Effect of trawl mesh size 8 Shrimp size isopleths 8 Sex ratio 10 Size of shrimp 10 Distribution of shrimp by size and depth 10 Fleet concentrations 16 Shrimp discarding 16 Summary 22 Literature cited 23 Appendix 24 FIGURES 1. Map of south Florida showing the Tortugas fishing grounds 2 2. Important features of Tortugas grounds- Controlled area, boundary of fishery stations occupied 5 3. Relationship of average carapace lengfths of male andfemale pink shrimp-- September, 1957-November, 1958 7 4. Relationship of carapace length of pink shrimp caught by main nets and try nets 8 5. The percentage of females by size of female shrimp 10 6. Percentage of female pink shrimp in the catches, by months, September, 1957-November, 1958 10 7. Relationship of depth of water and average size of female shrimp 10 8. Relationship of depth of water and average size of male shrimp 11 9- Relationship of the annual average size of shrimp and depth of water 11 10. Female shrimp size and depth (Cruises I, II, 1-6) 12 11. Female shrimp size and depth (Cruises 7-13) 13 12. Female 'shrimp size and depth (Cruises 14-23) 14 13. Male shrimp size and depth (Cruises 7-8, 14-19, and 22-23) 15 14. Numbers of shrimp caught per hour in a standard try net (Cruises I, II, 1. 2) 17 15. Numbers of shrimp caught per hour in a standard try net (Cruises 3-10).... 18 16. Numbers of shrimp caught per hour in a standard try net (Cruises 11-23) .. 19 17. Distribution of fishing effort on the Tortugas grounds (November, 1957- February, 1958) 20 18. Distribution of fishing effort on the Tortugas grounds (March-July, 1958)... 20 19. Distribution of fishing effort on the Tortugas grounds (July -November, 1958) 21 20. Size frequency distribution of the total catch of pink shrimp and those dis- carded 22 TABLES Page 1. Details of sampling cruises 4 2. Variation in mean length of carapace and in percentage of females in samples taken fronn a single catch 7 3. Mean carapace length by sex and by sexes combined and the percentage of females among samples taken from catches of two nets fishing simul- taneously 9 4. Number of vessels counted on the fishing grounds and at dock during air- plane flights, January to November, 1958 21 5. Nunnber of tows and size distributions from which shrimp were discarded and not discarded 22 APPENDIX TABLES 1. Summary of tows, September, 1957 to November, 1958 25 2. Carapace length frequencies of Tortugas pink shrimp 33 3. Size equivalents for shrimp, P. duorarum 62 SIZE DISTRIBUTION OF PINK SHRIMP, Penaeus duorarum. AND FLEET CONCENTRATIONS ON THE TORTUGAS FISHING GROUNDS by Edwin S. Iversen, Andrew E. Jones and C. P. Idyll' ABSTRACT A study of the pink shrimp, Penaeus duorarum, on the Tortugas fishing grounds was undertaken during 1957 and 1958 to provide information on the nature of the relation between the size of shrimp and the depth of water where they occur, together with fleet concentrations and degree of discarding of small pink shrimp. The average carapace length of both male and female shrimp increased both with depth of water and with northerly distance from the Florida Keys. Snnall pink shrimp were most abundant from September 1957 through May 1958, appearing on the eastern and southeastern portion of the grounds, where the highest try net catches were made. The fleet concentrated there during December to June but was more widely distributed during the summer. Apparently, few small pink shrimp were discarded. INTRODUCTION THE FISHERY The pink shrimp, Penaeus duorarum, sup- ports valuable commercial fisheries off the south coast of Florida and the Cam- peche area of the Gulf of Mexico. This species is of recent economic importance, having been caught in large quantities only since 1950. Little is known of the details of its life history and much has to be learned before a rational conservation plan can be devised for the fishery. The present investigation has been one phase of a research program on the pink shrimp and its fishery on the Tortugas grounds off the southern end of Florida. The work was supported by a Saltonstall-Kennedy funds through the U. S. Bureau of Com- mercial Fisheries, Contracts Nos. 14-17- 008-7 and 14-17-008-23. The Tortugas shrimping grounds (fig. l) are roughly rectangular in shape, about 60 miles long (east and west) and 25 miles wide (north and south). The eastern corner of the grounds is located about 12 miles north -northwest of Key West, and the grounds extend past the Dry Tortugas Islands. The depth of water on the fishing grounds ranges in a gradual gradient from about 9 fathoms on the east to about 25 fathoms on the west, with most fishing taking place in depths from 11 to 19 fathoms. The bottom is mostly white sand and mud. Some outcroppings of rock occur, esi>ecially in shallow extension of >The authors are members of the Marine Laboratory, University of Miami, Coral Gables, Florida. 1 83«W. — r— 82»W. \^ DRY TORTUGAS '' MARQUESAS KEYS 25»N.- o„<,I3I ONLY SAMPLES HAVING AT LEAST 30 OF EACH SEX USED 30.0 - , , j/^ •• 1 25.0 . .. .. >^ o z w 20.0 ■ * iJ^ .' • UJ u < 150 tc. Y=0.638X + 6.008 ^ • UJ _l ^ 10.0 ■ iij (9 < ^ 5.0 < 5.0 40.0 10.0 15.0 20.0 25.0 30.0 35.0 AVERAGE FEMALE CARAPACE LENGTH (MM) Figure 3. — Relationship of average carapace lengths of male and female pink shrimp, September 1957-November 1958. Table 2. --Mean lengths of carapace and percentage of females in samples taken from a single catch Cruise Tow Sample Mean carapace length Males Females Both sexes Numbers Males Females Percent females 16 10 1 23.U 29.0 26.2 32 32 50.0 16 10 2 23.7 29.1 26.5 27 30 52.6 16 10 3 23.4 29.5 26.6 48 52 52.0 16 10 K — -- -- 24 63 72.4 16 10 5 -- — — 35 42 54.5 16 10 6 — — — 27 30 52.6 16 10 7 — — — 34 33 49.3 17 8 1 22.4 27.4 25.0 62 70 53.0 17 8 2 22.5 27.2 24.8 101 95 48.5 17 8 3 22.5 26.7 24.6 83 89 51.7 17 8 K 22.0 26.4 24.4 76 97 56.1 The mean lengths show little variation and indicate that the sannpling technique provided a representative index of the sizes in the catch. Catches of nets from 10 tows of cruise 16 were examined to discover whether they differed in respect to the average size of the shrimp and to the sex ratio (table 3). Carapace length differences of male and female shrimp combined, from port and starboard nets, did not exceed 1.4 mm. within individual hauls. Neither net consistently caught the larger average shrimp. The variation in sex ratio of shrimp caught by the two nets was not extreme. These results justified pooling catches of the two nets before drawing the samples, or drawing them from either net. Effect of Trawl Mesh Size Ideally, the same trawl cod end should have been used throughout the study; however, trawl nets do not wear well and such a procedure was not possible. The nets used were bought as 2 -inch stretched - mesh manufacturer's measure. Because of variations resulting from the manu- facture, preservation, use, and other fac- tors, trawl cod ends can vary greatly in average mesh size (Medico, 1958). This was evidenced in the present study. Cod- end meshes were measured at intervals for each shrimp net (table 1 ). Graham (1956) found that the sizes of meshes in trawl cod ends govern the average size of the fish caught. This has also been shown for shrimp (Regan g< aL, 1957) and it was considered necessary to determine how the different sizes of shrimp trawl cod ends might affect our results. The average size of female shrimp caught by the main nets was compared with the average size of female shrimp caught by try nets fishing sinnul- taneously (fig. 4). At the top of the figure, sizes of shrimp in catches by a 1 3/4- inch mesh try net used for the first half of the study were compared with catches of two main net cod ends, one with 1 1/4- inch mesh and one with 1 3/4-inch mesh. The results suggest little influence by the nneshes of these two nets on average female shrimp sizes. In the lower part of figure 4, catches by a 1 7/8 -inch mesh try net, used for 22j0 260 30.0 340 3B0 42.0 460 MESH SIZES-MAIN NETS ICOD ENDSI O ' 1-7/8" a l-7/a LINEfi A : 1-1/4" TRY NET MESH: 1-3/4 TRT NET MESH--I-7/8" 18.0 220 260 300 340 380 420 460 AVERAGE CARAPACE LENGTH (MM) FROM MAIN RIGS Figure 4. --Relationship of carapace length of pink shrimp caught by main nets and try nets. most of the remaining time, are compared with catches of four main net cod ends, including the 1 3/4 -inch mesh net used in the above analysis. The results indicate that the try net (1 7/8-inch mesh) caught a somewhat larger average size of shrimp than the main nets, but that the size selectivity of the nets did not materially affect the average size of female shrimp sampled. Shrimp Size Isopleths Several methods were considered for the analysis and presentation of the data describing the size distribution of shrimp on the fishing grounds. However, the data would not fully satisfy the requirements or assumptions of several statistical tests and the decision was therefore miade to present the results graphically. Diagrams have been constructed showing the areas of the fishing grounds where shrimp of a certain size range occurred. Isopleth lines were drawn on charts of the fishing grounds, joining interpolated points from observed average size of female shrimp. Standard isopleths of 2.5 mm. head -length intervals were used, the smallest being 20.0 mm. Data from successive cruises e S a M > a) rH tin U) 01 d +-> <) c (1) s ^1 ■I-' 0) iH p< d (1) ^ ^ tn +j bll Tl C s cn T) •H a) tM c •H U) ^ +-> H 0) o fi o <> en ^ 0) -p !«( a) Vl CO o !>> to ^ 0) ^ T) C) s cd C) >< 0) (/) !>. 4J 43 +J §> (1) i-l 0) c> cd P< crt M at o s 1 • CO AC^stst + + rH + + + + 1 strHstC^tOrHt>!> cDOrHOOOOp 1 + 1 1 + 1 + + ^D<^tOO\DrHOC3^ tOCMstCMa^lnOtO roc^stvDO-stmm OmvDC^C^vDCMCn r>cMCM'£>c^--l'r^'A OcncMrHOvOCMC- ininr^strHcnc^c*^ tOvOOCMCMr^CMC:^ CMCMrHtOC^vOvD^n r^COC>CMCMCMCMr\i intoomvOr^OrH ONtOvOOOtOCJ^tO c^cnr^c^coCMCMCM tOfMOC^mO->tI> tCDCJNvOstC^str^CM CMCMCMOvlCMCMCMCM stvDstrHst^CNJC3N ........ OCMcaCMcntostst c^ror^^tostmm toOfOCJNCT^ststin CMr^rHstCMm>£)-^ C<-lCMvOOin[>st[> st \0 CM r^ m in r^ stt>^cr>OCMO^ CMCMC^D-O^OvOvO o^roovimncMCMCM «Or^CJ^[>«0r^t0rH [>dstC3^rHtOtOC^ rostr^cMcocMCMCM Ci^r^OC:^CMrHvDvO t-4•fOststCO CMCMCMnjCMCMCMCM 3/ Carapace length -p 0) cd o cd -P CO -p CD [H O cd ^1 6 (U C CD o Cd ^1 e CD 0) rH Cd a 0) rH 1 0) o cd ft oj x: U -P CO -P X O CD CQ m 0) rH cd flH 0) rH rH CM r^stinvOt>tocj\Oi-i 1 — 1 1 — 1 CO CD X Cn CU PI Tl (1) CU rH rH 5P ^ • a 3 ^•rl CO T3 CO CU p, d Cd B •H •H 4=1 >i U ^ rH Si O PI (0 cj O StI ■|CM|cnl with similar distribution of shrimp sizes were pooled. The diagrams were con- structed from data presented in the appen- dix. SEX RATIO The sex ratios in each sample which had at least 30 of each sex showed no marked difference with changes in the size of female shrimp (fig. 5). The ranges of sex ratios for each cruise are shown in figure 6. The mean percentage of females varied considerably for each cruise, sug- gesting that either there is grouping by- sexes on the grounds or our sampling induced variation, or both. There was an indication of fewer females in the catches from September to December, while during January there were more than 50 percent females; there were close to 60 percent females during July-September. 90 - .• UJ -J 4 ..• . >"V>- : . •;- ■:'. :. ; -i'^^f. ^.' • . . % ^. . 111 so ••* u. 1- z . S'° - • q: 0. 10 - • 1 1 ' IS 20 2S 30 is 40 4S SO AVERAGE FEMALE CARAPACE LENGTH (MM) Figure 5.--The percentage of females by size of female shrimp. ( ) 0) c WWBCR Of SWLES USeO T |...Ne,|.o.|...L..|,..|...|.,.|...U|..,|.„.U|„,|.„.| 1*57 I IH. Figure 6, shrimp 1958. --The range and mean percentage of female pink in the catches, by months, September 1957-November SIZE OF SHRIMP DISTRIBUTION OF SHRIMP BY SIZE AND DEPTH The average size of shrimp on the fish- ing grounds increases with depth. This relationship is illustrated by plotting the average sizes of all samples throughout the year against depth, keeping the sexes separate (figs. 7 and 8). 45 40 z s 35 < 30 25 20- 15 N°225 • 1. . I • 1 L . . I I . : i.^ 10 15 20 DEPTH (FM.) 25 Figure 7.--Relationship of depth of water and average size of female shrimp. In addition to separate treatment of data from males and females, the trend of the combined sexes is shown (fig. 9). The curve representing male data shows a slope of 0.618 mm. (Sd yx = 0.752 mm.) for each fathom change in depth. The female shrimp show a more rapid in- crease in length of carapace with increase in depth, 0.868 mm. (Sd y-x = 1.16). The combined data provide an intermediate slope, 0.739 (Sd yx = 0.881). Despite this relation between size of shrimp and depth, 10 45 - N=225 40 35 s 25 20 I5fc • J _I I I I I I L. 9 10 15 20 DEPTH (FMJ 25 45 40 35 -I 30 S25 ui s : MALES ■ X (Y=I6.394 + 0.618X) FEMALES • e {Y-^ 17.914 +0.868X) MALES AND FEMALES'* (Y-^ 17.307 -(-0.739X) 20- I5tj_ -I I I _l L. 9 10 15 20 DEPTH (FM.) 25 Figure 8.— Relationship of depth of water and average size of Figure 9. — Relationship of the annual average size of shrimp male shrimp. and depth of water. there is a considerable range of sizes at all depths. Some important causes of this variation will be discussed in sub- sequent sections. The following figures (10 to 13) contain data gathered on groups of cruises and these points should be noted: 1. The average size (carapace length) of shrimp on the grounds. 2. The distance between isopleths. When the standard isopleths are close together, the average size of shrimp is changing rapidly and conversely. 3. Direction of the gradient. When the isopleths are parallel over some dis- tance on the grounds, a positive gradient exists. Examination of these isopleths shows, with minor exceptions, that two patterns of size distribution predominate on the Tortugas grounds. One is the increased size with depth and the other a size gradient in a northerly direction irre- spective of depth. Without complete cov- erage of the fishing grounds during each cruise, a complete evaluation of the sig- nificance of these two patterns is not feasible. We have shown in figures 7, 8, and 9 that a size -depth relation exists but we must consider that such a rela- tionship may be a function of diffusion or dispersion of individuals from the Keys. Considering the number of cruises in which the resultant isopleth lines cross fathom contours, we strongly entertain this possibility. These data suggest that small shrimp move onto the grounds from the east and southeast and increase in size as 11 ml 8 to "3 b O t I I) 12 hi ^ Si Ok ■8 13 14 I i s M U u I V) 15 they move in either a northerly or north- westerly direction. There is no distinct seasonal pattern in the size -depth rela- tion. Small shrimp predonninate on the grounds during the months of September through May. Using as an index of abundance the number of shrimp caught per hour in the standard try net, additional infor- mation on shrimp movements was ob- tained. Catches are charted on the fol- lowing graphs, and the diameter of the circles denote the number of shrimp taken per try -net hour (figs. 14 to 16). The greatest abundance occurred from December 1957 to January 1958 and from March to June 1958. Catches during these periods were made in shallow water on the southern and eastern sectors of the grounds. This evidence indicates a period of recruitment during the winter, with shrimp entering the grounds from the south and east, much as was shown by the size -depth relation. FLEET CONCENTRATIONS Most of the data on fleet concentra- tions were obtained from observations made on the charter vessel. These ob- servations were made on every cruise and hence are more complete than those made from airplanes. Airplane flights over the grounds at night provide spatial distribution and estimates of the total number of vessels trawling. Seven air- plane flights were made (table 4, p. 21). The number of boats observed from the charter vessel are totaled for 5-mile squares and are represented by symbols denoting the various concentrations (figs. 17-19). These figures can only be con- sidered as rough estimates since the diagram for each cruise usually repre- sents a total of three nights' observations. Boats moving from one location on the grounds to another during the cruise could have been nnissed altogether. Vary- ing visibility on the fishing grounds also produces errors. While observations on the distribution of fishing effort are incomplete, some general seasonal trends in fishing effort can be seen. During the period December to June the largest concentrations of vessels were observed and were located on the eastern and southeastern portions of the grounds. An exception to this occurred during October when concen- trations of over 35 vessels per 5 -mile square were noted on the southwestern portion of the grounds. During the re- mainder of the year the vessels generally covered the entire grounds, their distri- bution being restricted by the State con- servation area and by the occurrence of algae. The distribution of fleet concentrations agrees well with the abundance indices of pink shrimp in time and space. The largest catches of shrimp and the largest number of vessels were found on the eastern and southern portions of the grounds, and these values were also highest during the months from December to June. SHRIMP DISCARDING Since small shrimp bring a lower price than large shrimp, fishermen sometimes discard the small ones. This practice is important in the analysis of the fishery because shrimp which are caught and then discarded are not included in catch records. This lowers the catch per unit of effort of a vessel and introduces an error in the average size of shrimp caught. Estimates of discard in this study have come only from the research vessel for reasons discussed earlier. Observa- tions were made on (1) the sizes of shrimp discarded compared to those re- tained, (2) the ratio of times fishermen discarded shrimp to the times that they did not discard shrimp, and (3) the possi- ble influence of different size distribu- tions causing fishermen to discard. To obtain information on the sizes of shrimp discarded compared to those re- tained, heads from shrimp that had been retained and whole discarded shrimp were measured during five cruises (fig- ure 20). When discarding occurred, vir- tually all shrimp as large as 19 mm. (smaller than 100 count, heads off) were discarded and about 80 percent of 22 mm. and about 60 percent of 25 mm. were discarded. Practically no shrimp larger than 28 mm. carapace length (60 16 3 10 f 17 s s I B a 2 18 ■a 3 60 19 — rt :5~" ~ [^ >- Ti ^ r-| — — n — — — — ~ — ' — > ) r ., — -^ — ^ _ - -/ • { ) -k- • • , • ■ • • • J ■ r— ^ 1^ / ... ■ • • ■ • • • ■ • • • . . '- - ■ ■ ■ ■ • • • • ■ ■ >H> . • • • • a • r~ • • • . • • • . en MSE I m i. T- N .(•1 CRUISE 4 »Eib:7- s>.ne7 CRUSES JAN. 1 4- B. isse key: (NUMBER OF TRAWLERS PER 5 MILE SQUARE) jAM.ta-t9,Me cnuaeT • = 1-7 . • ■ • l-l . • • • • ■ I^B- • ■ • . ■ l? • • . • f e« us le r FEB. T- 20 , IMS ■ ■ • • • • • ■ • . • • • • • • • ■ ' "" , ■" ^»«r 1 FEB. te 27 .■see ■ =8-14, • =15-21. ■■22-28. % =29-35. BOUNDARY OF OBSERVATION = OVER 35. Figure n.— Distribution of fishing effort on the Tortugas grounds (November 1957-February — rt =" — [% i ~1 y^ — — — — — — — ~ — — -~ — — — — > ) ( .J — -I _ — _ V — ~ r -k- " . • if • - r-' n / .-■ • • • • ■ • • . • • • W' , . -^ ^ ? '"SS^ • • • • • • • . • • • ■ ■ • -■ J ■^ -' . • , . _ -^ Id a - -L -- CR », \d " — — "H S ST e^ V. HIM L m T W — L * J J .. EB. turn . • • . • • . ■ • • • . • ■ . • ■ • • ■ • ■ ■ . • • . • . • • 1 1 I • , • • . ■ • ■ • • • ■ • • ■ • • • ■ ■ • ■ • • • . , . ■ . • • • ■ • • ■ . • • • • • ■ ■ . • CM HI K U APK R. T -10 .1 9« 1 CD U^ r ir «i PM 1. 22 -a *,* ■6) 1 OR UH C IS N« r »- ». 11 isa _______ ■■_!_.1.J1".^ •Mr ifte.iMi OMIMC is june 9-ii, igse • • • • . • ■ r~ • • • • • • • • Cll 01 se u » w. » < l< ■.H »i key: (NUMBER OF TRAWLERS PER 5 MILE SQUARE) . = 1-7 ■ =8-14. • =15-21. ■=22-28. # =29-35, ■ =OVER 35. BOUNDARY OF OBSERVATION Figure 18.--Dl«ribution of fishing effort on the Tortugas grounds (March-July 1958). 20 - . • . • . . . • • • . . . ■ ■ . • • • . • CR Ult IE It UN L ZC -a ,I9M :::ii:i CmillE 22 OCT. lT-11 .IWI ^ • . ^ • . • • • • • • • • • • « • . - . • ctwnE IT JULY 24-2-; NSS ■ • • • . • ■ • • • • . • ■ • . • . ■ • • • ■ • ■ ORune M SEPT. a-it, im« ■ • • • • . • ■ ■ ■ • • • • • • ■ . • • • • • ^ • • • • • • ■ • - • • • CRUISE la Aua. 5-8, I9SS • . 1 1 • • . • • • • • - • ■ ■ • . • • ■ • . . . . 1 1 1 CRUISE 21 SEPT. 23-2T, l9Se key: (NUMBER OF TRAWLERS PER 5 MILE SQUARE) CRUISE 23 NOV. 4-7, 1968 . = 1-7, • =8-14.« =15-21. ■'22-28. % =29-35. ■ =OVER 35. BOUNDARY OF OBSERVATION Figure 19.— Distribution of fishing effort on the Tortugas grounds (July-November 1958). Table <+. --Number of vessels counted on the fishing grounds and at dock during airplane flights, January to November 1958 Date Number of vessels Flight On grounds At dock Total 1 January 30 142 388 530 2 February 26 555 102 657 3 March 27 322 128 4-50 A- April 22 ^0 106 546 5 June 25 105 95 200 6 August 20 166 23 189 7 November 3 115 59 174- count, heads off) were discarded. On certain instances fishermen left small numbers of large shrimp, but these were merely overlooked and were not inten- tionally discarded. Some were also cast aside because they were crushed, or soft, having recently molted. From these data it appears that when discarding occurred, Z6 mm. carapace length was the largest size normally discarded and that at about 20 mm. carapace length all shrimp were discarded. The second aspect of this phase of the study was to determine how often discarding took place. Tows containing some shrimp of 26 mm. or less (i.e., sizes which are ordinarily discarded) were observed (table 5). On 23 tows the fishermen intentionally discarded small shrimp and on 177, they did not. The majority of these cruises for which dis- carding took place occurred during mid- winter and fall. Table 5 also shows the range and mean percentages of tows 21 TOTAL CATCH DISCARD ^30 ■ ■ Szo • S / "^— "'. N^^ 10 / \.^ ^^ Table 5. — Niimber of tows and size distri- butions from which shrimp were discarded and not discarded 22 2S 28 31 34 37 40 43 4e 49 92 CARAPACE LENGTH IN MM, Number Percentage of shrimp 26 mm. or less Range Discard Tows Mean 23 13-96 No Discard Tows 58.1 177 1-93 33.7 Figure 20. — Size frequency distribution of the total catch of pink shrimp and those discarded. in which shrimp less than 26 mm. were discarded and not discarded. In discard- ing tows, the mean percentage (obtained by averaging the percentages of all samples) was higher (58.1 percent of shrimp were 26 mm. or less) than for the no-discard tows (33.7 percent). On some tows when no discarding took place, as high as 93 percent of the shrimp were 26 mm. or below. When large numbers of small shrimp (under 26 mm.) first appeared on the grounds in September 1958, discarding occurred. When it becanne apparent that the small shrimp were in great abun- dance, they were retained. During the study period dealers indicated that all sizes of shrimp could be marketed. In September, samples taken from trash in two heading houses produced no whole discarded shrimp that were not soft or damaged. Average size of two samples were 22.9 mm. and 22.2 mm. carapace length, the smallest individuals measured about 18 mm. SUMMARY 1. This report contains observations on the relation between the size of Tor- tugas pink shrimp and the depth of water where they occur, on fleet concentrations, on the grounds, and on the discards of small pink shrimp. 2. Data on these aspects were gathered from September 1957 to November 1958. Two cruises per month were made each month except June, October, and Novem- ber 1958 to observe fleet activities and to collect samples of shrinnp. Seven flights were made over the grounds to observe fleet concentrations. Additional information on fishing effort was obtained from logbooks. 3. The average carapace length of both male and female shrimp taken during the year increased with depth; however, a size gradient irrespective of depth was also apparent in a northerly direction from the Keys. Whether the size-depth relation was a function of seasonal dis- persion of shrimp as they increased in size, could not be determined. During the period from Jvme through November 1958, logbook reports from 14 boat& indicate that very little discard took place. Data from approximately 645 tows (on the basis of three tows per night) show discard occurring on only 17 tows, for an estimated total weight of 138 pounds. Apparently small shrimp are discarded only when few are caught, and it is not worth the effort or expense to ice them separately from the rest of the catch. 4. The small shrimp first occurred on the eastern and southeastern portions of the grounds. Small shrimp were most widely distributed on the grounds during September through May 1958. 5. The highest catches, based on try- net data, were made December 1957- January 1958, and during March to June 1958. The highest catches were made on the southern and eastern areas of the grounds, generally in shallow water. 22 6. During December to June the largest concentrations of vessels were located on the eastern and southern portions of the grounds. During the summer, the fleet was more widespread. LITERATURE CITED BULLIS, HARVEY R. 1951. Gulf of Mexico shrimp trawl designs. U. S. Fish and Wildlife Service, Fishery Leaflet No. 394, 16 pp. GRAHAM, M. (Editor). 1956. Sea fisheries, their investi- gation in the United Kingdom. Edward Arnold, London, 487 pp. KNAKE, BORIS O., JAMES F.MURDOCK, AND JAMES P. GATING. 1958. Double -rig shrimp trawling in the Gulf of Mexico. U. S. Fish and Wildlife Service, Fishery Leaflet No. 470, 11 pp. MEDICO, ERNEST J. 1958. Certification and after-use measurement of manila otter-trawl cod ends. U. S. Fish and Wildlife Service, Commercial Fisheries Review, vol. 20, No. 12, pp. 1-8. REGAN, JAMES, C. P. IDYLL, AND E. S. rVERSEN. 1957. Mesh size regulations as a pos- sible method of managing the Tor- tugas shrimp fishery. Proceedings of the Gulf and Caribbean Fisheries Institute, Ninth Annual Session, November 1956, pp. 18-22. 23 APPENDIX All tows from which samples of shrimp were obtained for the size -distribution study are listed in appendix table 1. Not all tows provided adequate sannples of shrimp; where this was the case, no average carapace length is provided. During July and August 1958 (Cruises 16, 17, and 18), 28 tows were made with the try net to locate the eastern boundary of the recurrence of algae. These tows are not listed. Try net tows that were made simultaneously with main net tows are not listed. 24 Appendix Table 1. — Summary of tows, September 1957 to November 1958 2/ Tow Dare North West Depth Time (EST) Averag e carapace Numbers in Gear^' lat. long. (fin.) start finish length (mm.) sample 1/ Males Females Males Females Cruise I, ( FWS), September, 1957 1 18 24° 49' 82° 03' 10 2040 2110 21.5 28.8 (12 50) M 2 II 52* tl 18' 14 2315 2400 25.5 29.0 50 34 3/ M 3 19 tl tl 20' 14 1950 2010 — — (2 2) T 4 n 51' II 16' 13 2020 2050 — — (6 5) T 5 tt 49' 11 12' 12 2115 2145 23.9 30.5 (33 28) T 6 fi 48' II 09' 11 2210 2330 — — 3 13 T 7 20 47' It 06' 11 2350 0200 — " ~ -3/ T Cruise II, (FWS), September , 1957 1 23 24° 53' 82° 10' 13 1900 1915 — — (0 1) T 2 " 55' " 13' 14 1940 1955 — — (9 9) T 3 II " It 15' 13-15 2000 2100 26.5 35.7 (49 52) M 4 II 56' II 21' 15-16 2240 2340 26.0 32.7 (32 39) M 5 24 tl II 32' 17 0330 0530 30.5 39.9 (57 44) >I 6 It 07' It 35' 20-22 1930 2045 35.6 45.9 (58 23) M 7 II 56' It 27' 17 2200 2300 25.3 29.2 (51 49) M 8 25 50' tl 07' 11 0015 0030 -- -- (1 6) T Cruise 1, November . 1957 1 5 24° 49' 82° 06' 11 1855 1925 21.8 23.1 (19 21) LT 2 II II 51' tl 08' 12 2005 2035 23.1 24.7 (17 10) LT 3 ■ 1 II 53' n 09' 13 2125 2155 24.1 26.3 (17 16) LT 4 tl II 59' tl 17' 14 2240 2310 — — 0 1 M 5 6 25° 09' tl 28' 19 0220 0250 — — 0 0 M 6 11 II 12' tl 38' 20 0400 0430 — — 1 1 M 7 M II 06' It 30' 19-17 0535 0555 27.1 38.4 14 25 K 8 " II II II 31' 18 1840 2115 28.6 34.6 77 64 M 9 II 24° 57' tl 19' 15 2140 0020 27.4 30.3 42 45 H 10 7 11 52' It 12' 13 0100 0330 22.1 24.7 62 49 M Cruise 2, November . 1957 1 23 24° 47' 82° 08' 12 1845 2015 26.4 31.8 35 60 M 2 11 50' It 14' 13 2130 0010 27.7 31.8 59 49 M 3 24 53' tl 18' 14-17 0045 0345 27.4 32.9 82 48 M 4 II 52' tl 28' 16-17 0355 0635 29.3 35.4 30 15 M 5 It II tl 35' 17-19 1830 1935 29.3 32.4 55 15 M 6 II 53' II 40' 19-20 2000 2210 33.5 44.2 29 22 M 7 II 50' It 42' 20-18 2230 0115 27.7 28.4 49 43 M 8 25 45' 11 40' 17 0130 0325 26.4 29.9 32 22 M 9 II II II 34' 16-14 0450 0640 28.3 33.4 22 13 M 10 II 51' tl 15' 14-13 1820 2220 26.1 37,6 19 44 M 25 Appendix Table 1 (cont'd) Tow Date North West Depth Time (EST) lato long. (fm.) start finish Average carapace length (mm.) Males Females numbers in sample 1/ Males Females Gear 2/ 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 17 II It 18 If II tl 19 II II II II 20 27 It 28 29 II II II II 30 II 14 II 15 24°47' 52' 55' 58' 59' 56' 54' 52' 47' 47' 24°48' " 46' •■ 45' " 44' .. 491 " 54' " 56' I. 591 25°06' " 02' 24°55' " '53' " 58' 25°02' 24''52' " 51' 24°45' " 47' " 45' " 44' " 44' 82°06' " 14' " 22' " 29' 11 301 " 37' " 42' " 48' " 53' " 47 1 " 40' II 321 " 20' 82°02' " 10' " 23' " 39' " 47' " 53' " 45' " 37' " 37' " 32' " 26' " 20' " 16' " 14' " 10' '• 05' 82°00' " 15' " 27' " 35' " 32' Cruise 3, December. 1957 11 1830 1910 22.6 14 2000 2130 25.7 15 2310 0200 27.7 17 0245 0500 28.6 17 0505 0630 28.1 19 1830 2100 29.7 21 2130 2230 33.8 23 0032 0125 28.6 24 0215 0245 28.5 22 0320 0620 27.0 18 1830 2000 25.0 16 2040 2345 23.1 14 0330 0630 23.5 Cruise 4. December, 1957 11 12 13 16-17 19 23 21 20 21 19-18 17 15 14 14 13 11 1945 2115 2355 0335 0550 1850 2010 2155 2355 0145 0500 1820 2050 2335 0105 0510 2045 2312 0210 0415 0635 1928 2110 2245 0040 0355 0655 2040 2330 0100 0400 0615 23.7 23.0 25.7 25.9 29.0 30.0 30.3 28.5 30,8 30.4 27.5 27.8 26.4 27.8 28.1 24.1 Cruise 5, January 1958 10 13 14 16 15-14 1845 1935 2250 2345 0035 0300 2205 2330 2350 0210 20.1 21.8 21.9 24.0 21.3 26.6 30.8 33.4 32.5 33.3 32.7 39.5 32.7 30.2 34.1 27.1 29.8 27.9 27.3 26.0 30.0 32.0 33.3 34.2 36.0 35.5 40.7 34.4 32.0 31.2 29.0 31.8 31.1 27.4 22.9 25.3 24.7 31.0 26.6 98 68 M 52 59 M 36 32 M 39 28 M 25 16 M 36 19 M 17 28 M 16 23 M (25 15) LT 36 28 LT 38 35 M 31 33 M 35 42 M 94 67 M 43 63 M 54 57 K 38 36 M 49 48 M 42 27 M 46 19 1-; 24 14 11 15 19 M 30 28 H 45 21 K 44 36 Vl 73 55 M 41 28 l-I 42 23 M 73 50 K 35 51 K 34 28 M 31 46 M 22 43 M 20 35 M 26 Appendix Table 1 (cont'd) Tow Date North West Depth Time (EST) Averag e carapace Number s in ei/ Gear 1/ lat. long. (fin.) start finish length (mnio) sample Males Females Males Females Cruise 6, January 1958 1 28 24 0441 82°46' 16-17 2200 2240 27.0 34,6 28 39 M 2 28-29 11 tt " 54' 18 2350 0120 27.0 32.9 38 20 M 3 29 II 391 83°00' 15 0215 0230 — — 0 0 3/ LT 4 tl II 41' " 07' 29-30 0310 0345 — — 1 5 LT 5 M II 46' 82''37' 17 1915 0010 26.9 32.8 29 43 M Cruise 7, February 1958 1 17 24 °51' 82°01' 11 1850 2210 24,5 29.4 55 53 M 2 II It 49' " 04' 11 2225 0110 24.4 29.2 58 36 M 3 18 It 49' " 12' 13 0145 0250 24.4 28.7 48 29 M 4 ft tl 49' " 21' 14 0330 0550 25.2 28.5 33 33 M 5 II tl 53' I. 23' 15-16 1840 2310 27.1 32.2 35 43 M 6 19 tt 54' " 25' 17-16 2200 0035 28.8 37,0 24 38 M 7 II II 491 " 33' 17 0120 0415 25.6 31.4 48 44 M 8 " It 49' " 44' 19 0520 0640 27.3 32.4 66 50 M 9 n tl 47' •• 53' 20 1900 2005 28.9 33.6 17 42 M 10 II II 47' " 35' 17 2200 2440 25.7 30.6 44 37 M 11 20 tt 51' " 23' 15 0245 0340 25.6 30.2 20 35 M Cruise 8, February 1958 1 25 24 °31' 82''50' 13 2345 0020 — — 0 0 3/ LT 2 26 tl 27' " 37' 20 0150 0200 — — 0 0 3/ T 3 II II 41' " 41' 14 0355 0530 31.1 39.5 19 33 M 4 II II 39' " 42 » 14 0535 0645 31.0 38.4 36 38 M 5 It II 45' " 43' 17 1910 2050 28,3 33.2 43 38 M 6 II It 47' " 33' 16 2205 2335 24.2 30.8 46 19 M 7 27 II 51' n 12' 13 0205 0325 24.8 28.2 41 21 M Cruise 9, March 1958 1 10 24 °45' 81°56' 9 1915 2040 24.4 30,1 38 51 M 2 11 II 44' 82°03' 10 2140 2310 23.3 27.0 122 38 M 3 11 II 47' " 12' 12 0040 0205 25.1 30.2 30 26 M 4 II It 43' " 26' 12 0445 0645 23.4 30.0 53 32 M 5 II II 42' „ 33, 14 1855 1940 23.3 27.9 41 49 LT 6 It II 49* " 46' 19 2130 2225 29.7 34.4 (18 22) LT 7 M II 58' " 41' 20 2340 0105 31.7 38.0 (31 25) LT 8 12 It 56' " 33' 18 0205 0320 29.4 39.4 (15 16) LT 9 i: II 54' " 30' 17 0415 0505 — 35.1 ( 4 8) LT 10 It II 47' " 03' 11 1905 2030 25.1 30.8 46 45 M 11 II II 49' " 02' 11 2115 2225 25.5 31.5 64 58 M 12 13 II 57' " 07' 12 0110 0115 — — 0 0 M 13 II II 57' 81°58' 12 0140 0235 29.4 35.7 56 48 M 27 Appendix Table 1 (cont'd) Tow Date North West lat. long. Depth Time (EST) (fm.) start finish Average carapace length (mm.) Males Females Numbers in sample — ' Males Females Gear 2/ Cruise 10. March 1958 1 -25 24''50' 82° 15' 14 1935 2205 24.9 28.1 2 26 ' ■ 52' • ' 29' 16 2030 2130 24.6 29.6 3 II 1 • 54' • ' 38' 19 2300 0015 28.5 35.7 4 27 ' ' 53' • ' 44' 20 0100 0230 29.3 36.2 5 11 1 ■ 47' ' • 50' 19 0325 0630 29.1 35.3 6 II 1 ■39' ■ ' 43' 14 1915 2015 30.3 38.0 7 II 1 • 44' ' ' 37' 16 2100 2230 23.7 27.5 8 28 ' ' 48' • ' 21' 14 0000 0220 22.0 25.5 9 II 1 ■ 52' • • 10' 13 0320 0410 23.4 25.3 10 II 1 1 It 1 ■ 07' 11 0450 0535 23.6 28.1 Crui se 11, April 1958 1 7 2 4°44' i. 2°04' 10 1935 2140 21.1 24.2 2 n 1 ' 46' ' ■ 12' 12 2240 0030 23.7 29.5 3 8 ' 47' • ' 30' 15 0250 0420 23.1 27.8 4 11 1 - 42> ■ ■ 28' 12 0520 0605 23.9 28.9 5 II 1 • 50' ' • 43' 19 1930 2040 29.3 38.0 6 It 1 ■ 54' ' ' 54' 18 2140 2240 30.8 37.8 7 II 1 • 58' • • 39' 20 2325 0040 31.7 38.5 8 9 • 54' • ' 32' 17 0155 0335 29.3 35.0 9 M 1 • 50' • ' 34' 17 0415 0610 27.2 35.1 10 II 1 '45' • • 30' 15 1930 2230 22.7 25.6 11 10 ' t II 1 • 19' 12 0005 0040 22.1 28.1 12 n 1 • 47' ' ' 16' 13 0120 0330 23.1 26.8 13 II 1 ' 46' • • 05' 11 0410 0535 22.8 26.8 Crui se 12, April 1958 1 22 1 .4°45' 8 2°01' 10 1955 2030 20.1 23.7 2 II 1 '52' ' • 14' 14 2315 0110 24.4 28.0 3 23 1 II 1 ' 26' 16 0225 0336 29.0 34.1 4 II 1 1 II 1 ' 37' 18 0430 0530 31.0 37.6 5 II 1 '40' ' 43' 15 1950 2055 31.0 39.7 6 II 1 • 46' ' ' 56' 23 2315 0020 30.4 37.8 7 24 ' 48' • 52' 21 0100 0140 31.7 38.5 8 II 1 •49' • 50' 20 0215 0325 30.9 39.1 9 II t 1 II 1 • 01' 11 1923 2205 23.1 27.8 10 II 1 '54' ' 02' 12 2300 2400 22.6 28.6 11 25 ' •59' ' 05' 13 0100 0200 25.3 36.6 12 11 1 ■45' i il°58' 9 0440 0503 20.1 23.4 28 55 46 33 46 23 31 19 27 28 10 25 34 33 40 29 47 34 36 42 39 23 20 26 50 38 14 42 34 28 33 28 44 26 51 29 42 40 61 71 50 51 44 28 39 25 43 36 53 67 27 52 67 64 27 45 25 46 46 32 88 42 62 88 102 84 21 34 57 39 M M M M M M M M M M M M M M M M M M M M M M M K M M M M M M M M M M M 28 Appendix Table 1 (cont'd) Tow Date North West lat. long. Depth (fm.) Time (EST) start finish Average carapace length (mm.) Males Females Numbers in sample —' Males Females Gear2^/ 2 3 4 5 6 7 8 17 18 Cruise 13, May, 1958 1 6 24 °44' 82 °04' 10 1947 2150 21.6 24.5 2 II II 46' tl 12' 12 2315 0045 22.8 27.2 3 7 n 45' II 26' 13 0240 0500 22.2 26.2 4 8 It 46' II 58' 24 2000 2108 32.0 38.6 5 II II 47' II 50' 19 2300 2325 31.4 40.6 6 9 It II II 38' 17 0035 0126 31.2 39.3 7 II II 48' It 28' 15 0230 0320 26.8 34.1 8 Tl II 53' II 19' 14 0405 0530 24.6 31.0 9 II " 42' It 11' 10 1950 2115 20.5 25.8 10 II II 47' " 05* 11 2230 0025 23.2 28.3 11 10 II 48' II 01' 11 0140 0510 23.0 26.9 Cruise 14, May, 1958 1 22 25 °01' 82 °07' 12 2120 2400 23.4 28.5 2 23 24 °58' II 10' 13 0050 .0325 26.2 33.3 3 II II 43' It 37' 16 2355 0030 23.7 26.6 4 24 II 50' II 37' 18 0052 0215 29.9 35.4 5 II II 54' It 45' 22 0320 0355 — — 6 Tl II 53' tl 47' 22 0410 0435 — — 7 II II 49' II 48' 20 0500 0530 — — 8 II II II It 22' 15 2225 2325 23.1 27.1 9 tl II 50' II 18' 14 2355 0055 26.1 32.6 10 25 It 51' tl 11' 13 0130 0230 26.6 33.0 11 II M 47' 81 °59' 9 0450 0520 21.1 24.0 Cruise 15, June, 1958 1 9 24 "44' 82 °06' 10 2013 2240 21.9 26.2 2 10 II 47' II 18' 13 0034 0055 22.6 25.9 3 It It 46' II 29' 15 0300 0400 23.5 28.7 4 n II 39' It 43' 15 2030 2040 — — 5 " II 49' II 48' 20 2210 2230 — — 6 11 II 55' It 36' 18 2400 0015 — — 7 II II 50' It 28' 16 0115 0140 — -- Cruise 16, July, 1958 16 24''04' 82° 10' 58' 53' 50' 50' II 45' 43' 27' 28' 40' 33' 26' 23' 10' 12 17 16 18 17 16 13 10 2138 2347 0146 0312 0357 0445 2205 2325 0010 0215 0325 0405 0443 0513 2021 2100 24.4 28.7 28.8 29.1 26.9 24.5 23.4 29.0 35.6 38.7 39.6 35.6 30.1 31.1 34 38 M 40 34 M 33 51 M 61 53 M (85 51) M 128 87 M 35 60 M 40 68 M 72 93 M 53 105 M 55 92 M 49 59 M 15 45 K (9 15) T (19 12) T 0 0 4/ T 0 0 4/ T 0 0 4/ T 73 58 M 48 48 M 30 33 M (10 6) T 68 98 3/ M 48 54 M 37 45 M 0 0 4/ T 0 0 4/ T 0 0 4/ T 0 0 4/ T 129 161 M 105 95 M 3 6 M 93 58 M 115 55 M 58 39 M 71 116 M (15 68) M 29 Appendix Table 1 (cont'd) Tow Date North West Depth Time (EST) Averag e carapace Numbers in Gear 2/ lat. long. (fm.) start finish length (mm.) samp lei/ Males Females Males Females Cruise 16, continued 9 18 ; ?4°48' 82°10' 12 2130 2225 24.4 28.3 113 100 M 10 II ' 47' II Q3f 11 2330 0230 23.9 29.1 161 178 M 11 19 ' 44' " 04' 10 0305 0430 23.2 28.5 74 98 M Crui. se 17, July. 1958 1 24 24°47' 81''55' 9 1955 2035 22.6 26.9 43 72 M 2 It ' 48' II II 9 2050 2335 22.5 27.0 63 88 M 3 25 • ' 48' 82°20' 14 0255 0345 25.6 31.6 25 63 M 4 II 1 • 47' " 28' 15 0448 0530 26.1 32.4 42 62 M 5 26 ' 46' II lit 12 2000 2029 23.1 29.2 37 72 M 6 tl f ' 51' tl II 13 2104 2150 26.7 34.0 47 48 M 7 27 1 II 1, 02' 11 2255 0005 24.7 29.8 41 78 M 8 tl I ' 48' 81°55' 9 0105 0415 22.4 26.9 322 351 M Cruise 18, August, 1958 1 5 : !4°58' 82°08' 13 2054 2118 25.3 31.3 (21 21) M 2 1 I) " 13' 14 2145 2220 28.1 35.4 39 53 H 3 I II " 16' 15 2233 2327 28.3 34.3 43 64 M 4 ' 55' II 22" 15 0017 0202 29.9 38.6 78 47 M 5 • 51' II It 15 0220 0320 30.0 41.3 (28 39) M 6 ' 48' " 26' 15 0345 0550 28.0 37.1 64 44 M 7 ' 47' II 19. 14 2111 2200 — — (1 3) T 8 1 II II 15. 13 2220 2255 — 30.6 (5 16) T 9 B II II 11. 12 2310 2358 — -- (2 10) T Cruise 19, August, 1958 1 22 : !4°49' 82°08' 12 2245 0005 25.5 29.6 61 76 M 2 23 ' • 48' H 14. 13 0025 0156 25,7 31.7 44 47 M 3 tl t • 47' " 18' 14 0211 0311 24.8 31.3 28 54 M 4 II 1 • 43' " 33' 14-15 0447 0548 26.2 32.2 49 93 M 5 II 1 • 48' II 591 25 1942 2030 27.8 37.0 29 72 M 6 II 1 • 50' 83''02' 27 2055 2300 27.7 36.1 44 44 M 7 24 ' ' 48' 82°55' 23 0225 0315 — — (7 6) 4/ T 8 II 1 1 II 1- 521 21 0330 0405 — — (4 3) 4/ T 9 II 1 T II " 47' 20 0435 0505 — — (2 5) 4/ T 10 II 1 I tl " 42' 18 0530 0600 — — 0 0 4/ T 11 11 1 ' 46' " 35' 17 1935 2052 28.2 34.8 33 65 M 12 II t I II II 27' 15 2155 2255 27.8 33.5 39 55 M 13 25 ' ' 47' " 10' 12 0115 0220 23.9 28.9 69 135 M 14 II 1 ' 50' " 05' 11 0246 0515 22.2 25.4 76 80 M 30 Appendi:c Table 1 (cont'd) Tow Date North West lat. long. Depth (fm.) Time (EST) start finish Average carapace length (mm.) Kales Females Numbers in Gear 2/ sample 1/ Kales Females Cruise 20, September, 1958 1 8 24 °46' 81 °56' 9 1926 2005 15.4 17.6 2 tt 11 44' 82 "05 ' 10 2110 2205 18.4 18.7 3 9 11 49' tl 25' 16 0032 0127 28.1 35.8 4 It M II It 37' 18 0235 0535 27.4 35.5 5 tr II 48' II 45' 19 1935 2023 29.9 38.9 6 II II 49' 11 47' 20 2043 2315 31.6 40.4 7 II 11 51' 11 48' 21 2338 0040 31.0 40.9 8 10 II 52' tl 48' 22 0056 0118 31.4 41.2 9 11 II 53' If 49' 23 0150 0228 — — 10 II II 51' It 55' 24 0300 0400 30.9 38.4 11 It It 45' tt 35' 17 2028 2143 23.9 26.8 12 II II 46" tt 20' 14 2250 0010 20.6 19,6 13 11 tt 48' " 20' 14 0035 0138 23.8 28.4 14 M 11 51' II 16' 14 0215 0330 29.6 38,3 15 II II 54' II 13' 14 0355 0500 27.8 27.4 16 n II 50' M 10' 13 1915 2115 20.0 20.6 17 II It II II 13' 13 2124 2315 22.7 25.6 18 It It It It 10' 13 2321 0116 24.4 23.2 19 12 It II II 13' 13 Cru 0128 Ise 21, 0400 September 24.9 , 1958 30.0 1 23 24 053, 82 "05' 12 1921 2040 20.3 25.0 2 It It 57' II 07' 13 2110 2145 — — 3 24 It 56' 11 22' 13 0013 0103 21.8 23.1 4 II II 46' tl 41' 17 0231 0533 21.2 26.7 5 II II 52' II 42' 19 1928 2033 29.0 33.5 6 tt It 57' It 41' 20 2055 2202 26.2 31.0 7 It II 59' II 45' 23 2232 2332 30.8 42.3 8 25 II 53' II 49' 23 0003 0230 31.5 40.6 9 11 tt 41' II 41' 14 0434 0546 28.3 37.2 10 II tt 23' tl 35' 23 2035 2055 — -- 11 11 II II II 36' 23 2122 2142 — -- 12 1! It II II II 23 2203 2302 -- -- 13 26 tt 24' " 39' 22 0005 0012 — -- 14 It " 39' It 40' 14 0227 0430 24.1 34.4 15 II 11 42' II 34' 15 0520 0600 20.5 28.0 16 II II 49' II 27' 16 1850 2200 25.0 27.9 17 II II 57' II 26' 17 2310 2400 28.8 36.3 18 27 tt 59' II 20' 15 0050 0110 23.2 25.4 19 11 tt 49' II 10' 13 0248 0334 — — 20 II tt 44' It 04' 11 0420 0430 — — Ill 145 M 43 59 K 53 39 K 44 29 K 35 35 M 30 47 K 35 48 K (28 35) 4/ K (9 6) 4/ T (21 22) 4/ H 39 50 M 29 51 K 35 34 M 22 21 M 17 20 K 34 65 M 45 33 M 32 57 K 29 44 K 25 55 M (3 6) 4/ K 60 56 M 35 61 n 41 43 M 41 40 M 25 36 K 33 46 K 16 66 M (1 4) T 0 0 T (0 8) 4/ T 0 0 3/ T 13 73 M (26 60) M 78 63 M (31 59) M (46 55) 4/ M - - 5/ M - - 5/ M 31 1 (cont'd) Tow Date Korth West Depth Time (KST) Averag e carapace Numbers in Gear 2/ late long. (fm.) start finish length (ranio) sanpl e y Hales Females Males remales Cruise 22, October, 1958 1 17 24 0441 82 "04 ' 10 2205 2305 21.6 24,7 44 58 H 2 18 II 48' 11 03' 11 2400 0100 18.9 21.4 (80 75) M 3 II II II 10' 12 0135 0240 21.4 26.0 25 60 M 4 II 47" fl 30' 15 0450 0550 22.5 27.1 39 64 K 5 11 41' II 42' 14 1825 1930 20.5 29.3 26 55 M 6 M 45' M 43' 17 2038 2138 25.7 28.1 26 43 M 7 II 46' " 47' 18 2225 2330 21.5 22.5 33 53 K 8 19 M 51' II 45' 20 0005 0105 28,2 34.0 55 23 H 9 " tl 48' tl 43' 19 0130 0510 28.4 30.0 38 52 M Cruise 23. November, 1958 1 4 24 °50' 82 °04' 11 1955 2218 24.2 27.4 (45 75) M 2 fl 25 "02 • II 19' 14 2340 0239 24.9 26.6 74 59 M 3 5 tl 01' M 33' 18 0356 0614 30.0 38.1 29 30 M 4 It 24 "43 • II 14' 10 2050 2157 24.0 28.2 26 33 M 5 tl II 44' It 23' 13 2253 0005 21.6 29.5 (21 38) M 6 6 II 46' II 31' 15 0029 0259 24.4 31.7 26 31 M 7 fl II II II 39' 17 0314 0615 24.0 25,4 69 42 M 8 n II 54' II 55' 25 1822 1919 33.5 42,3 29 22 M 9 II II 57' M 45' 22 2018 2118 32.1 36.8 30 26 M 10 II II 58' tl 40' 19-21 2133 2356 31.9 38,6 32 35 K 11 7 II 55' " 31' 17-18 0010 0254 29.4 32.3 61 37 M 12 II II 53' II 25' 16 0309 0605 25.4 30.7 34 34 M ~ Parentheses around number in samples indicate entire catch measured. No parentheses indicate sample of catch, 2/ - M= Main net, T= Try net (15 foot spread), LT= Large try net (27 foot spread). 3/ 4/ 5/ Net torn or Ipst. Green algae clogged net. The "Danny Boy" capsized and samples lost. 32 Appendix Table 2. --Carapace length frequencies of Tortugas pink shrimp Carapace Cruise I, 9/18. -19/57 C ruise II, 9/23 -25/57 length T ow number T( 3w number (mm) 1 2 5 2 3 i 5 6 7 M F M F M F M F M F M F M F M F M F 16 ^ ^ _ _ _ _ 1 _ _ _ _ _ _ 17 - - - - - - _ - _ _ _ _ _ _ _ _ _ _ 18 1 - - - - - - - - - - - - - _ _ 1 - 19 1 1 - - - - - - 1 _ - - _ - _ _ 1 _ 20 4 4 - - 2 - - - 1 1 1 _ _ - _ _ _ « 21 2 1 2 - 1 1 1 - 2 1 2 - - - _ _ 3 2 22 - 4 2 - 6 1 1 - 6 - - - 1 - _ _ 2 1 23 - 2 8 - 7 2 - 1 3 1 6 1 - - - _ 8 2 24 1 1 6 1 4 3 - - 7 2 2 - 2 - - - 5 _ 25 1 1 9 4 3 - 2 - 2 - 4 4 1 2 - - 5 4 26 2 2 6 3 5 2 1 1 3 1 3 3 2 - - - 8 6 27 - - 8 3 2 3 1 - 3 - 1 1 5 2 - - 7 3 28 - - 4 4 1 1 1 - 5 - 3 4 4 - - - 6 3 29 - 5 2 5 1 5 1 2 3 2 3 1 3 - - - 1 6 30 - 8 2 3 1 - - -, 10 2 3 1 10 1 1 _ 3 _ 31 - 8 - 7 - - - - - 1 1 2 10 3 2 - _ 7 32 - 5 1 - - 1 - 1 1 1 3 3 5 2 2 1 1 5 33 - 3 - 1 - 1 - - 2 4 - 6 6 - 1 - _ 1 34 - 2 - 1 - - - 1 - 2 - 1 4 2 14 _ - 2 35 - 1 - 1 - - - 1 - 6 - - 3 _ 8 _ - 5 36 - 2 - - - 1 - 1 - 2 - - 1 1 12 _ _ - 37 - - - 1 - - - - - 6 - 2 - _ 7 - - 1 38 - - - - - 1 - 1 - 1 - 1 - 1 5 _ - 1 39 - - - - - 1 - - - 5 - 1 - - 3 - - - 40 - - - - - 2 - - - 4 - 1 - 4 3 2 - - 41 - - - - - 1 - - - 3 - 3 - 1 - 3 - - 42 43 44 - - - - - 1 - - - 2 - 2 1 - 1 9 2 - - - - _ _ _ _ _ _ _ _ _ 1 „ _ _ _ _ _ 45 - - - - - - - - - 1 - - - 5 - 1 - - 46 - - - - - 1 - - - - - - - 3 - 3 - - 47 - - - - - - - - - 1 - 1 - 2 - 5 - - 48 - - - - - - - - - 1 - - - 3 - 2 - - 49 - - - - - - - - - 1 - - - - - 1 - - 50 - - - - - - - - - - - - - - - 2 - - 51 - - - - - - - - - - _ - _ - - 2 - - 52 - - - - - - - _ - - - - _ _ - - - _ 53 - - - - - - - - - - - - - - - 1 - - Total 12 50 50 34 33 28 9 49 52 32 39 57 44 58 23 51 49 33 Appendix Table Z. — (Cont'd) Carapace Cruise 1 , 11/5-6/57 length Tow numb er (mm) 1 2 3 6 7 8 9 10 M F M F M F M F M F M F M F M F 17 1 _ _ _ „ ^ „ _ _ _ _ _ _ _ 1 1 18 - 1 - - - - - - - - - - - - 3 - 19 - 1 - - 1 - - - - - 1 - 1 - 3 3 20 4 2 - 1 2 1 - - - - 2 - 2 2 10 4 21 6 5 1 - - - - - - - 1 1 3 - 7 3 22 2 3 5 - 1 3 - - - - - 2 2 2 13 3 23 3 4 5 1 3 1 - - 2 - 4 2 1 1 11 9 24 1 - 5 2 3 2 - - 3 - 6 2 4 3 5 2 25 1 2 - 2 - 3 1 - - 1 8 1 4 3 3 7 26 - 1 1 2 3 1 - - 1 1 7 4 2 5 1 4 27 - - - 1 1 - - - 2 1 5 3 3 4 - - 28 _ - - 1 1 - - - 3 - 4 - - 2 - 3 29 - - - - 1 - - - - - 3 1 5 1 1 1 30 - - - - - 2 - 1 2 - 5 1 5 3 2 1 31 1 _ _ - 1 1 - - - - 8 1 4 2 1 3 32 - - - - - - - - - 2 7 1 4 1 2 33 - - - - - - - - 1 1 6 1 2 - 1 34 - 1 - - - 1 - - - - 3 8 2 - - 35 - - _ —V - - - - - 3 4 5 - - 1 36 - - - - - 1 - - - - 3 2 3 - - 37 - _ _ - - - - - - - - 2 - - - - 38 39 40 - 1 - - - - - - - 4 - 8 3 1 1 1 1 - - _ _ ^ _ „ ^ _ _ _ _ _ _ _ 1 41 - - - - - - - - - - - 4 - - - - 42 - - - - - - - - - 4 - 6 - - - - 43 - _ - - - - - - - 1 - 1 - - - - 44 - _ - - - - - - - - - 2 - - - - 45 - - - - - - - - - 1 - - - - - - 46 - - - - - - - - - 3 - 1 - 1 - - 47 _ _ - _ _ _ - - - 3 - 1 - - - - 48 - - - - - - - - - - - - - 1 - - 49 - - - - - - - - - - - - - - - - 50 - - - - - - - - - - 1 - - - - 51 - - - - - - - - - - - - - - - - 52 - - - - - - - - - - - - - 1 - - Total 19 21 17 10 17 16 1 14 25 77 64 42 45 62 49 34 Appendix Table 2. --(Cont'd) Carapace Cruise 2, 11/23-26/57 length Tow number (mm) 12 3 4 5 6 7 8 MF MF MF MF MF MF MF MF 17 _________------- 18 ii_______------- 19 ______-_------ 2 - 20 ii___----------2 21 _--ll---l---113- 22 242-322-1---6--3 23 211121--1---2-3- 24 134213- 1-11--- 142 25 51 12 1831-2-1-3452 26 5491 15 1116111761- 27 4551942-7-1-7731 28 2158727161--431- 29 512543-18121782- 30 -452234-32212313 31 34455121322-2231 32 3643336-2-2--42- 33 1-437421424-311- 34 --21121-322-21-- 35 -1-115124---11-2 36 -4-312----4---11 37 _4-l-l-3325-l--l 38 -4-3-3-2--21---- 39 -2-2------11-1-2 40 _5-3-2-l----l--- 41 _i_i___--_-l---2 42 _2-------------- 43 _i_-_l--_------- 44 ____-l_--------- 45 -------1-1-1---- 46 -----4-1-------- 47 -_-l-------7---- 48 ___-_------3---- 49 __--_------l---- 50 _______--------- 51 - - - - - - - - - - - 4 - - - - Total 35 60 59 49 82 48 30 15 55 15 29 22 49 43 32 22 35 Appendix Table 2. --(Cont'd) Carapace Cruise 2 (Cont'd) Cruise 3, 12/17-20/57 length Tow number Tow number (mm) 9 10 12 3 4 5 M F M F MF MF MF MF M F 17 - - - - - - - - - - - - _ - 18 - - - - 1 - - - - - - - - - 19 1 - - - 6 3 - - 1 - - - - - 20 - - - 1 10 2 1 - - - - - - - 21 - - 2 - 27 6 2 - 2 - _ - - - 22 2 1 2 1 13 7 3 - - - 2 - 1 - 23 2 - 2 - 13 5 3 1 1 - 2 1 1 1 24 2 - 2 - 7 6 9 3 3 - - 1 2 - 25 3 1 4 - 6 9 7 3 2 - - 1 _ 1 26 - 1 - 2 8 3 10 4 4 - 2 - 2 - 27 1 - 1 1 3 5 5 8 6 1 7 2 4 - 28 - - 1 - 1 3 6 13 4 - 8 - 2 - 29 - - - - 2 3 2 4 3 1 7 - 6 1 30 1 1 - 3 - 3 3 4 2 5 4 2 4 - 31 3 - 3 1 1 1 - 2 1 5 3 3 1 1 32 2 1 1 - - 1 - - 3 1 - 2 - 2 33 - 2 - - - 2 - 1 2 2 - 2 2 2 34 2 - 1 3 - 2 1 2 1 7 2 6 - 3 36 1 - - 1 - 1 - 1 1 2 - 2 - - 36 1 1 - 1 - 2 - - - 3 1 3 - 1 37 1 2 - 1 - 1 - 1 - 3 - 1 - 1 38 - 1 - - - - - 2 - - - 1 - - 39 - 1 - 5 - 2 - 2 - - - 1 - - 40 - - - 4 - - - 3 - 1 - - - 3 41 - - - 8 - - - 2 - - 1 - - - 42 - - - 6 - - - 1 - 1 - - - - 43 - - - 1 - - - 1 - - - - - - 44 A C - - - 3 1 1 - 1 - 1 - - - - - - 4d 46 _ 1 _ _ _ _ _ _ ^ _ _ 47 - - - - - - - - - - - - - - 49 _ ^ _ _ _ ^ _ _ _ _ _ „ _ _ 50 - - - - - - - - - - - - - - Total 22 13 19 44 98 68 52 59 36 32 39 28 25 16 36 Appendix Table 2. — (Cont'd) Carapacee Cruise 3 (Cont'd) length T ow numb ST (iTLm) 6 7 8 9 10 11 12 13 M F M F M F M F M F M F M F M F 16 _ » _ _ _ _ _ - _ _ _ > _ _ 2 _ 17 - - - - - - - - - - - - - - » - 18 - - - - - - - 1 - - - - 1 - 1 - 19 - - - - - - - - - - - - - 1 - - 20 - - - 1 - - - - 1 - 3 2 2 - 1 - 21 - - - - - - - - - 1 3 3 7 2 6 4 22 1 - - - 1 - - - - - 3 4 6 1 8 2 23 - - - - - _ - 1 - 1 6 4 5 - 3 1 24 1 - - - - - 2 - 5 3 5 1 1 2 6 2 25 - - - 1 - 4 - 4 - 4 2 2 - 1 6 26 1 - - - - 1 2 1 6 1 1 2 3 5 1 7 27 3 - _ 2 2 2 - 6 - 5 4 1 3 2 3 28 6 3 1 - 2 2 6 2 2 1 3 - - 4 1 2 29 7 1 1 4 3 3 1 3 - 3 2 3 2 2 3 30 5 3 - 3 1 4 1 3 1 - - - 2 - 1 31 5 2 1 1 2 1 - 2 2 2 1 2 - - 1 1 32 2 1 - 1 3 - 2 2 4 1 2 - 2 - 2 33 2 2 - 2 - - 1 1 - 1 - - - 1 34 2 2 3 - 2 - - - 1 - 2 - - - 1 35 - 3 - 2 - - - 1 - 1 - 1 1 1 36 1 1 _ 1 - 2 1 1 - 1 - 1 - 2 37 2 3 2 - 1 - 2 - 2 - 1 - 1 - - 38 39 40 - - - 1 - - 1 1 - - 1 1 - - - 2 - 1 ^ _ 2 2 „ _ « _ _ _ _ 2 _ _ 41 - - - 1 - - - - - 1 - - - - - 2 42 - 1 - 1 - - - - - - - - - - - - 43 - 1 - 1 - - - - - - - 1 - 2 - - 44 - - - - - - - - - 1 - - - - - - 45 - - - - - - - - - - - - - - - - 46 - - - 2 - - - - - 2 - - - - - - 47 - - - 1 - - - - - - - - - - - - 48 - - - 1 - - - - - - - - - - - - 49 - - - - - 1 - - - 1 - - - - - - 50 -- - - 1 - 1 - - - - - - - - - - 51 - - - - - - - - - 1 - - - - - - 52 - - - - - - - - - - - - - - - - 53 - - - - - - - - - - - - - - - - 54 - - - 2 - - - - - - - - - - - - 55 - - - 1 - - - - - - - - - - - - Total 36 19 17 28 16 23 25 15 36 28 38 35 31 33 35 42 37 ;i.ppendix Table 2. --(Cont'd) Carapace Cruise 4, 12/27-30/57 length Tow number (mm) 123456789 MF MF MF MF MF MF MF MF MF 16 i___-__-__-__--___ 17 __________________ 18 ___-____-___-_-_-- 19 l__l-___l_.l___-_- 20 4-111-2----------- 21 10 363----1--------- 22 15 3 15 44-1-------2-1- 23 15 5946451----1----- 24 20 3798352--2----1-- 25 952 11 844221113-2-1- 26 7 12 1 13 95345-21111--- 27 47-68452 10 14-2--- 1- 28 3712297282512-52-- 29 35--372-543-5-3--- 30 -7-33212698-92612- 31 -2-1-33-1362633-5- 32 211-12-32451 11 -2--1 33 -2-114-4332431--3- 34 -------21621---221 35 -3-1-2-315-4-5-1-1 36 -2---1---22512---2 37 -_-___-ll2-l---l-- 38 ---1---221-111-1-1 39 ---1-4-3-2-3-1-2-- 40 __-_-l-l-___---l_3 41 ___i__---_-_l--l-_ 42 _-----_-_--___---4 43 __-_-_----_------2 44 --_-___2---------- 45 -----l___l-_-_-_-- 46 -----1----- 2 47 -_____------_-_--- 48 --_---___------l-l 49 -_-----_-2-l-l---l 50 ----------2---- Total 94 67 43 63 54 57 38 36 49 48 42 27 46 19 24 14 15 19 38 Appendix Table 2. --(Cont'd) Carapace Cruise 4 (Cont'd) Cruise . 3, 1/14 -16/58 length T ow nunnib( ^r T ow numb ST (mm) 10 11 12 13 14 15 16 1 2 M F M F M F M F M F M F M F M F M F 16 _ _ ^ _ _ _ _ _ _ . „ . _ _ 1 1 . _ 17 - - - - - - - - - - - - - - 2 1 - 1 18 _ - 1 - - - - - - - - - - - 2- 1 5 1 19 _ - - - - - - - - - - - 1 1 7 7 2 1 20 - _ - - - - 1 - 1 - - - - - 8 3 4 1 21 _ _ 1 1 - - - - - - 1 - 5 1 4 6 7 1 22 _ 1 _ - - 1 3 3 - - - - 10 1 5 5 4 5 23 1 1 2 _ 1 - 6 1 1 - 3 1 14 2 5 6 5 3 24 2 1 6 2 4 1 8 4 - 1 4 - 16 7 1 5 3 2 25 - 1 2 1 4 2 8 2 3 1 7 1 8 3 - 3 1 3 26 _ 2 3 1 3 1 9 4 4 1 - 2 11 7 - 5 1 3 27 3 _ 4 - 8 4 15 8 6 2 2 3 3 3 - 4 1 1 28 2 - 8 - 8 1 9 5 7 3 3 3 2 5 - 1 1 1 29 3 - 6 1 7 4 7 5 10 1 9 1 1 5 - 2 - 1 30 4 - 5 3 4 3 7 2 6 2 4 2 2 5 - - - - 31 2 1 7 - 3 4 - 4 3 5 4 1 - 1 - - - 1 32 6 4 - 5 1 1 - 9 - 2 1 1 - 3 - 1 - - 33 2 1 - - - 3 - 2 - 1 - 2 - 1 - - - - 34 2 3 _ - 1 3 - 4 - 1 2 - - 2 - - - - 35 1 1 - 2 - 3 - - - 3 - - - - - - - - 36 1 2 - - - 1 - 1 - 1 - 2 - 2 - - - - 37 1 1 - 1 - 1 - - - 2 1 1 - 1 - - - 1 38 _ 1 - 1 - - - - - - - 1 - - - - - - 39 - 1 - - - - - - - - 1 - - - - - - - 40 - 2 - 1 - 2 - - - - - - - - - - - - 41 - - - - - - - - - - - 1 - - - - - 1 42 - 1 - - - - - - - 1 - 1 - - - - - - 43 _ 1 - 1 - - - - - - - - - - - - - - 44 _ _ _ _ _ _ - - - 1 - - - - - - - - 45 - - - 1 - 1 - 1 - - - - - - - - - 1 46 _ - - - - - - - - - - - - - - - - - 47 - 2 - - - - - - - - - - - - - - - - 48 - 1 - - - - - - - - - - - - - - - - Total 30 28 45 21 44 36 73 55 41 28 42 23 73 50 35 51 34 28 39 Appendix Table 2. --(Cont'd) Carapace Cruise 5 (Cont'd) Cruise 6, 1/28-30/58 Cruise 7, 2/17-20/58 length Tow number Tow number Tow , lumber (nnm) 3 4 5 1 2 5 1 2 3 M F M F M F M F M F M F M F M F M F 18 - - - 1 2 - - - - - - - - - - - _ _ 19 2 1 - 1 2 - - - - - - - - - - - - - 20 3 2 2 - 2 1 - - - - - _ - _ - _ _ _ 21 10 2 5 1 5 4 - - 1 - - - 2 - - 1 1 _ 22 8 7 3 1 4 2 2 - - _ 1 - 4 1 4 1 5 _ 23 4 6 2 1 4 5 2 - 3 - 2 - 9 - 11 - 12 - 24 2 6 2 - 1 3 - - 4 - 3 1 17 4 13 1 9 1 25 2 7 2 2 - 2 5 - 3 - 8 - 10 1 14 1 15 4 26 - 6 1 5 - 4 2 - 4 1 2 2 7 5 12 4 2 3 27 - 2 3 3 - 3 4 - 8 3 4 4 3 6 2 4 3 1 28 - 2 - 4 - 3 5 2 4 2 2 1 2 7 - 2 - 4 29 - - - 2 - 1 3 4 4 2 1 5 1 5 2 5 - 4 30 - 4 1 3 - 1 3 4 4 2 2 2 - 8 - 5 - 8 31 - - - - - 2 1 2 2 - 1 2 - 5 - 2 - - 32 - - 1 2 - - - 1 1 1 1 5 - 5 - 3 - 2 33 - - - 1 - _ 1 3 _ 1 1 6 - 2 - 3 - 1 34 - - - - - - - 5 - 2 - 4 - 1 - 1 - - 35 - - - 5 - - - 4 - - - 4 - - - 3 - - 36 - 1 - - - 2 - 3 - 1 1 - - 1 - - - - 37 - - - 2 - 1 - 1 - - - - - - - - - 1 38 - - - 3 - - - 1 - 2 - 1 - - - - - - 39 - - - 2 - _ - 5 - - - 1 - - - - 1 - 40 - - - 1 - - - - - 1 - 2 - - - - - - 41 42 43 - - - 1 - - - 1 2 - - - - - - - - - - _ _ _ _ _ _ _ _ _ _ _ 1 _ _ _ „ 44 - - - - - - - - - - - - - 1 - - - - 45 46 - - - 1 1 - - - - - 1 - - - - - - - - 47 48 - - - - - 1 - - - 1 - 1 2 - - - - - - 49 _ _ _ - _ - - 1 - - - - - - - - - - Total 31 46 22 43 20 35 28 39 38 20 29 43 55 53 68 36 48 29 40 Appendix Table 2. --(Cont'd) Carapace Cruise 7, (Cont'd) length Tow number (mm) 4 5 6 7 8 9 10 11 MF MF MF MF MF MF MF MF 21 12-1----1------- 22 3il___l-l---31-- 23 6i----4-21--5-2- 24 5-5-1-9262--633- 25 62422- 11 19-229241 26 3351-- 10 25-1-6-73 27 54 10-7 164923-11412 28 23563133 12 63113-3 29 -3113122 10 2341519 30 1334421454151213 31 -5-232154314-315 32 -2-5-3-61712-5-2 33 12-3-5-61412-4-3 34 -1-3-3-2-2-311-1 35 _ii513-2-5-3---l 36 ___3---l-3-5-l-- 37 ___3-3-2-313---- 38 ___l_2---2-4---- 39 _____i___l-2---- 40 ___2-l---l-l---l 41 ___i_i______-l_- 42 _____2-------l-- 43 _____-__-l_---_- 44 _________l______ 45 ___________ 46 ____-2-l---l---l 47 __________-__--- 48 ______-_--_--_-- 49 ___-_4-l-----l-- 50 ____________---- 51 ___--_____------ 52 1 ----- Total 33 33 35 43 24 38 48 44 66 50 17 42 44 37 20 35 41 Appendix Table 2. --(Cont'd) Carapace Cruise 8 . 2/25- 27/58 C ruise 9, 3/10- 13/58 length Tow number Tow number (nun) 3 4 5 6 7 1 2 3 4 M F M F M F M F M F M F M F M F M F 20 ^^ ^ _ ^ _ ^ 2 . 1 _ _ . 1 21 - - - - - - 2 - 1 - 2 - 7 - _ _ 4 _ 22 - - 1 - 1 - 4 - 2 - 5 - 21 1 2 - 9 1 23 1 - - - - 1 7 - 6 - 5 - 41 1 4 1 17 2 24 - - - - 4 - 13 1 10 1 10 - 33 2 8 - 10 - 25 - \ 2 - 5 - 7 2 10 2 7 2 13 8 6 1 7 3 26 - - 1 - 9 1 6 1 5 2 5 1 6 5 3 - 4 7 27 1 - 1 1 1 1 1 4 3 4 3 4 - 4 6 3 - 1 28 - - 4 - 5 4 3 - - 1 - 5 - 2 1 1 1 4 29 2 - 2 - 3 3 1 3 1 5 1 8 - 9 - 5 1 4 30 4 - 4 2 1 1 - 1 2 1 - 11 - 3 - 5 - 1 31 3 - 3 - 3 3 - - - 1 - 9 - 1 - 2 - 1 32 2 2 2 1 3 2 - 1 - 2 - 5 - 2 - 4 - - 33 2 2 5 2 2 3 - 1 - - - 3 - - - - - 1 34 2 - 7 2 3 4 - 2 - 1 - 1 - - - 2 - - 35 1 2 4 4 2 1 - - > 1 - 1 - _ - - - - 36 1 - - 6 - 4 - - - - - -. - - - 1 - 1 37 - 5 - 2 - 5 - - - - - 1 - - - - - - 38 - 1 - - 1 1 - - - - - - - - - - - - 39 - 2 - 2 - 3 - - - - - - _ - - - _ 1 40 - 5 - 1 - - - - - - - - - - - 1 - 1 41 - 2 - 5 - - - 1 _ _ _ - - _ _ _ - _ 42 - 5 - 2 - - - 2 - - - - - - - - - - 43 - 1 - 2 _ 1 _ _ _ _ - - - - _ _ > 2 44 _ _ _ - _ _ _ _ _ - _ _ - - - _ _ _ 45 _ _ - _ - - - _ - _ _ _ _ - _ _ - _ 46 - 3 - 5 - - - - - - - - - - - - - 2 47 » - - - - .. - - - - - - - - - - - - 48 - - - - - - - - - - - - - - - - - - 49 - 2 - 1 - - - - - - - - - - - - - - Total 19 33 36 38 43 38 46 19 41 21 38 51 122 38 30 26 53 32 42 Appendix Table 2. --(Cont'd) Carapace Cruise 9, (Cont'd) length Tow number (mm) 5 6 7 8 9 10 11 13 MF MF MF MF MF MF MF MF 19 1 -- 20 2--------------- 21 21--------1----- 22 5i_-_---_-----l- 23 15 3----1---6-5--- 24 33- 18 -16 11- 25 771-------6-17 11- 26 23-2--1---7211-5' 27 265-11----54 12 23- 28 172-4-1----3328- 29 -5113-5-1125-791 30 -3115-3----8-7 10 2 31 13415-1-1-1 10 -663 32 -1223----1-5-1156 33 -32-3121-1-4-1136 34 -2-133--11-1-432 35 ---8-112-1-1-3-5 36 _-_-23-21--l-314 37 ___i_2---------4 38 ___ll4-l-l-----3 39 __-212-l-l-----4 40 __-_-3-2-------4 41 _l-l_2-2-------l 42 ---1-2-4-1------ 43 ---- __--_-l 44 _______-_-_----_ 45 ___-------- 46 -------1---1---2 47 __._-__--------- 48 ___-__---------- 49 ------ -- 50 ________-_------ 51 ______--_------- 52 1--- Total 41 49 18 22 31 25 15 16 4 8 46 45 64 58 56 48 43 Appendix Table 2. — (Cont'd) Carapace Cruise 10, 3/25-28/58 length Tow number (mm) 12 3 4 5 6 7 8 ' MF MF MF MF MF MF MF MF 19 ___________i-_i_ 20 i_-__-____-_--5l 21 2-4-1-----1-6-91 22 4211--------42 12 1 23 5115-3-1-----8171 24 3111-2---1-1-4333 25 15333---1---5414 26 39435-5-31116523 27 2422124-3---14-6 28 47179-1-4---15-2 29 17136-5-6112---2 30 17125-712----3-2 31 -6-52-3222---3-3 32 -2123-1-1311---1 33 112112-31332-2-- 34 _2-1233-l----l-- 35 -1--23-2131----- 36 _____ll5-5-l---- 37 _-__12-2-213---- 38 --_l_6---4-l---- 39 -____l_--2-2---- 40 _-_l_l__l_-_---- 41 _____2-2---l---- 42 _____-__-------- 43 _2-l-6---- 44 _„___________--- 45 _______-_--_---- 46 -_. _l---__-_3---- 47 _-_____-------_- 48 __-___-_-------- 49 1 - 1 - - - - Total 28 55 46 33 46 23 31 19 27 28 10 25 34 33 40 29 44 Appendix Table 2. — (Cont'd) Carapace C- ruise 10(Cont'd; Cruise 11. 4/7 -10/58 length Tow nximber Tow number (mm) 9 10 1 2 3 4 5 6 7 M F M F M F M F M F M F M F M F M F 19 „ 1 1 _ 4 _ _ -. - - - - - - - - _ - 20 2 2 2 1 9 1 - - 2 - - - - - - - - - 21 6 1 2 1 9 2 1 - 4 - 2 1 - - - - - - 22 6 2 5 - 8 3 3 1 9 1 1 1 - - - - - - 23 12 2 7 - 7 2 5 - 16 3 2 1 - - - - - - 24 5 4 5 4 1 6 4 - 8 7 5 - - - - - - - 25 11 6 6 3 1 4 5 1 6 1 2 5 - - - - 1 - 26 2 6 5 6 - 2 2 I 3 4 2 2 1 - 1 - - - 27 3 5 3 4 - 2 - 3 1 4 - 7 4 - 1 - 3 - 28 _ - - 6 ~ 1 - 2 1 5 - 4 4 - 4 - 1 - 29 _ 1 M 4 - _ - 4 - 3 - 4 11 - 4 - 2 - 30 » 3 - 4 - - - 1 > 5 - 4 4 - 2 - 5 - 31 > _ - 1 - - - 7 - 1 - 5 4 1 8 - 5 - 32 _ _ - 3 - - - 3 - 1 - 2 4 2 4 3 12 1 33 _ 1 - 1 _ - - 1 - 1 - 2 - - 5 1 6 1 34 _ _ _ 2 - - - 2 - - - 1 2 5 3 2 2 - 35 _ _ — 1 _ - - - - - - 1 - 1 1 2 5 1 36 _ > _ - - - _ - - 1 - 1 - 3 - 4 1 7 37 - - - - - - - - - - - 1 - 2 - 5 - 5 38 > _ _ — - _ - - - - - - - 6 - 1 - 1 39 M > _ 1 - - - - - - - - - 1 - 2 1 1 40 _ _ - - - - - - - - - - - - - 3 - 3 41 — — - - _ _ - - - - - - - - - 2 - 2 42 - ~ - - - - - - - - - - - - - - - 2 43 _ - - - - - - - - - - - - 2 - - - - 44 - ~ - - - - - - - - - - - - - - - - 45 - — - - - - - - - - - - - - - - - - 46 _ _ - - - _ - - - 1 - - - 4 - 2 - 1 47 » - - - - - ~ - - - - - - - - - - - 48 ~ - - - - - - - - - - - - - - - - - 49 _ - - - - - - - - - - - - 1 - - - 1 50 . - - - - - - - - - - - - - - - - - 51 - - - - - - - - - - - - - - - - - - 52 - - - - - - - - - - - - - - - 1 - - Total 47 34 36 42 39 23 20 26 50 38 14 42 34 28 33 28 44 26 45 Appendix Table 2. — (Cont'd) Carapace Cruise 11 (Cont'd) Cruise 12, 4/22-25/58 length Tow number Tow number (mm) 8 9 10 11 12 13 1 2 3 M F MF MF MF MF MF M F M F M F 16 - - - - - - - - - - - - _ 1 _ _ _ H 17 - - - - - - - - - - - - 1 - - - - - 18 - - - - - - - 1 - - - - 9 - 1 - - _ 19 - - - - 3 - 1 - - - - - 5 1 - - - _ 20 - - - - 3 - 7 - 2 - 2 - 12 2 1 - - - 21 - - - - 10 3 13 2 3 2 2 - 6 6 3 - 1 - 22 - 1 - 12 5 8 3 8 1 9 2 5 6 9 2 - - 23 - - - 13 8 12 2 14 1 14 1 4 2 6 4 2 1 24 - 5 - 15 12 6 6 11 1 7 2 - 8 9 5 1 1 25 1 6 - 4 10 1 5 4 3 4 2 1 2 10 4 2 2 26 - 6 - - 11 1 5 1 5 - 2 - 2 7 8 3 3 27 5 - 5 1 1 4 - 8 1 2 - 6 _ 2 4 7 2 3 28 9 1 6 - - 5 1 2 - 4 - 5 - - - 8 2 1 29 4 2 7 2 - 6 - 3 - 4 1 3 - 1 1 9 1 3 30 7 1 1 4 - 3 - 4 - 1 - 2 - 1 1 5 1 2 31 9 - 3 4 - 3 - 1 - 1 - - - - - 6 4 4 32 4 1 - 2 - - - 1 - 2 - - - - - 3 2 4 33 5 2 - 4 - 1 - 1 - 1 - - - - - 3 2 2 34 1 3 2 3 - - - 2 - - - - - 1 _ 1 _ 3 35 1 3 - 4 - - - 1 - - - - - 1 - 1 2 1 36 1 3 - 4 - - - - - - - - - - - - 2 3 37 - 5 - 1 - - - 1 - - - - - _ 1 _ - 3 38 39 40 41 42 - 2 3 1 - 1 2 2 2 - - - - - - - - - - - - - 4 - - - - - - - - - - - - - 1 - 3 1 ^ ^ _ _ ^ ^^ ^ ^ _ ^ _ _ _ _ ^ 43 - 1 - 3 - - - 1 - - - _ _ - _ _ - 5 44 - - - - - - - - - _ - - - - - - _ - 45 - - - - - - - - - - - - - - - - - - 46 - - - 1 - - - 1 •> - - - - - - - - 2 47 - ^ - _ _ - _ - _ _ - _ _ - _ - _ _ 48 - - - - - _ - - - _ _ _ _ - - - - - 49 - . - - _ -. - _ 1 - - - _ _ - - - - - 50 - - - _ _ - - - - _ - _ _ _ - - - - 51 - - - - _ _ _ - - _ _ _ _ - - - - _ 52 — _ _ _ M _ « _ M _ _ _ „ _ _ _ _ 1 Total 51 29 42 40 61 71 50 51 44 28 39 25 43 36 53 67 27 52 46 Appendix Table 2. --(Cont'd) Carapace Cruise 12 (Cont'd) length Tow number (mm) 4 5 6 7 8 9 10 11 12 M F M F M F M F M F M F M F M F M F 17 _ _ _ _ _ M _ M _ _ _ _ _ _ _ _ 1 _ 18 - - - - - - - - - - - - 1 - - - 3 - 19 - - - - - - - - - - 1 - 6 - 1 - 14 - 20 - - 2 - - - - - - - 4 - 8 - 2 - 17 5 21 - - 1 T* - - - - 1 - 12 1 23 1 1 - 16 5 22 1 - 1 - - - - - - - 16 4 19 3 2 - 4 5 23 - _ - 1 - - - - - - 6 5 18 6 1 - 2 6 24 - - 2 - - - - - - - 8 6 9 6 1 2 - 9 25 - 1 1 - - - - 1 - 6 9 9 5 2 - - 2 26 1 1 - - - - - - - 6 7 4 6 2 - - 2 27 », - 2 2 _ - - 3 - 4 13 1 10 3 1 - 1 28 6 - - 4 - 2 - 9 - - 6 1 8 1 2 - 1 29 13 - 3 3 - 4 - 10 - - 9 1 11 2 1 - 3 30 9 - - 1 7 1 15 - 9 1 - 9 2 6 2 - - - 31 10 - - - 3 1 3 - 18 - - 5 - 5 - 2 - - 32 11 2 1 - 2 2 10 2 16 1 - 5 - 3 1 2 - - 33 3 - 5 1 1 2 6 - 7 2 - 6 - 4 - - - - 34 3 2 4 - 3 1 1 - 9 - - 3 - - - - - - 35 2 8 5 2 - 1 2 3 2 3 - - - 4 - 3 - - 36 4 6 2 1 - 12 1 4 2 4 - - - - - 3 - - 37 3 9 2 2 - 5 1 4 - 2 - - - 2 - 2 - - 38 1 6 - 1 - 4 - 4 - 3 - - - - - 1 - - 39 - 7 _ 3 - 6 - 6 - 5 - - - 2 - 2 - - 40 _ 3 - 1 - 2 - 2 - 9 - - - - - 2 - - 41 - 3 - 1 - 3 - 2 1 5 - - - - - 2 - - 42 _ - - - - - - - - - - - - 2 - - - - 43 - 10 - 15 - 5 1 2 - 4 - - - - - 7 - - 44 _ _ _ _ - - - - - - - - - - - - - - 45 - - - - - - - - - - - - - - - - - - 46 - 2 - 6 - 1 - 3 - 1 - - - - - 2 - - 47 - - - - - - - - - - - - - - - - - - 48 - - - - - - - - - - - - - - - - - - 49 - 1 - 3 - - - - - 2 - - - - - - - - 50 - - - - - - - - - - - - - - - - - - 51 - - - - - - - - - - - - - - - - - - 52 - - - 1 - - - - - - - - - - - - - - Total 67 64 27 45 25 46 46 32 88 42 62 88 102 84 21 34 57 39 47 Appendix Table 2. — (Cont'd) Carapace Cruise 13, 5/6-10/58 length Tow number (mm) 12 3 4 5 6 7 8 MF MF MF MF MF MF MF MF 18 l--__-__________ 19 --l_2----- 20 612-3----------- 21 627-81-------__- 22 15 5 12 285------2-4- 23 347253------1-6- 24 395-36------4-71 25 -83227------3-115 26 -2162 10 2---2-10-83 27 -416-72---815-3- 28 -112-3--9-6-1-13 29 -2-7-18-9- 15 135-8 30 - - - 3 - 4 7 - 13 1 24 1 1 6 - 10 31 - - - 4 - 2 11 - 12 1 19 - 1 9 - 12 32 -----172 15 -21 -16-9 33 ------10 1 16 2 15 325-4 34 -_____376-53-6-6 35 __-___422-7-14-- 36 -----1252439-6-- 37 ------3 10 152 10 -4-2 38 -----__3-6-9-l-l 39 -------7-5-9-1-1 40 _-____i5-3-4-4-2 41 ---_-__2-3111-l-- 42 ________________ 43 ---___l3-12-23-l-l 44 ________________ 45 ________________ 46 _--__-_4-5-2---- 47 ________________ 48 ________________ 49 -_-______3_l---- 50 ________________ 51 ________________ 52 --_____2_1__---- 53 ________________ 54 ________________ 55 ___-____--__l-_ Total 34 38 40 34 33 51 61 53 85 51 128 87 35 60 40 68 48 Appendix Table 2. — (Cont'd) Carapace Cruise 13, (Cont'd) Cruise 14, 5/22-25/58 length Tow number Tow number (mm) 9 10 11 1 2 3 4 8 M F M F M F M F MF MF MF MF 16 1 - - - - - - - - - - - - - _ _ 17 1 - - - - - - - - - - - - - _ _ 18 6 - - - - - - - - - - - - - 1 _ 19 9 - 1 - 1 - 3 - - - _ - - - _ _ 20 20 4 1 - 2 - 3 - - - 1 _ _ _ _ 21 17 6 7 - 9 - 2 1 1 1 - - _ 11 _ 22 13 7 11 - 15 3 5 1 3 1 3 1 - - 13 1 23 3 9 9 1 10 11 11 2 - - 1 - 21 4 24 1 12 15 5 11 11 6 5 - 2 - - 20 8 25 - 11 6 12 3 12 5 8 3 1 - - 6 7 26 1 9 3 13 2 13 10 8 4 2 - - 1 6 27 - 11 - 15 2 14 3 6 - 3 1 2 - - 5 28 - 7 - 19 1 8 - 6 2 - 4 3 - - 11 29 - 5 - 13 - 4 1 6 3 - 1 4 - - 6 30 - 2 - 6 - 5 - 3 - - - 1 - - 3 31 - - - 6 - 1 - 2 - 1 - 1 4 3 - 4 32 - 2 - 4 - 1 - 2 - 1 - - 1 2 - 1 33 - 3 - 4 - 2 - 1 1 3 - - 1 - - 1 34 - 2 - 1 - - - 2 2 3 - - - - - - 35 - 2 - 1 - 3 - - - 1 - 1 - 1 - - 36 - 1 - 2 - 1 - 1 - 2 - - - 3 - 1 37 - - - - - 1 - 1 - 3 - - 1 - - - 38 39 - - - 2 - 2 - 1 - 4 1 - - 1 - - - 40 41 - - - 1 - - - 1 1 - 3 1 - - - 1 - - 42 43 44 - - - - - - - - - 3 - - - 2 - - .^ ^ ^ _ ^ ^^ ^^ _ ^ _ _ ,. _ _ 45 - - - - _ - _ - - _ - _ - - - - 46 _ - - _ - _ _ _ _ 2 _ _ _ _ _ - 47 - - - - - - - - - - - - - - - - 48 - - - - - - - - - - - - - - - - 49 - _ _ _ _ - _ 1 - _ _ _ _ _ _ _ Total 72 93 53 105 56 92 49 59 15 45 15 19 12 73 58 49 Appendix Table 2 (Cont'd) Carapace Cruise 14 (Cont'd) Cruise 15, 6/9-10/58 Cruise 16, 7/16-18/58 length Tow number Tow number Tow number (mm) 9 10 11 1 2 3 1 2 3 M F M F M F M F M F M F M F M F M F 17 _ - - - - _ _ 1 _ - _ - T _ - _ _ ^ 18 _ - - _ - - 2 - - _ _ _ _ _ _ _ _ M 19 - - - - 1 - 4 1 - - - - - - - _ - - 20 - - - - 2 - 5 3 - 1 - - 5 2 - - - - 21 1 - - - 2 - 13 - 5 - 2 - 15 2 - - - - 22 1 - - - 3 - 21 3 18 2 7 - 11 - - 2 - - 23 3 -, - - n 1 14 3 15 4 9 2 15 5 1 - - - 24 3 - 5 - - 4 7 1 4 5 9 3 21 6 3 - - - 25 7 - 4 1 - 1 2 5 6 10 5 - 24 8 4 2 - - 26 13 - 6 - - - - 7 - 11 5 4 13 5 4 1 - _ 27 14 3 10 - - - - 7 - 7 - 13 15 21 15 1 - *. 28 3 3 4 - - - - 5 - 8 - 7 5 13 23 1 - - 29 - 4 - 4 - - - 3 - 3 - 5 4 26 21 2 1 - 30 - 1 - 4 - - - 5 - 1 - 3 - 31 18 - - - 31 3 9 - 4 - - - 3 - 1 - 4 1 21 8 7 1 - 32 - 5 1 4 - - - 3 - 1 - - - 6 6 7 - - 33 - 9 - - - - - - - - - 1 - 3 - 7 1 - 34 - 4 - 5 - - - - - - - 1 - 4 1 8 - - 35 - 2 - 4 - - - - - - - _ - 1 - 7 - 1 36 - 1 - - - - - - - - - - - 4 1 9 - 1 37 - 1 - 3 _ - - - - - - - - 3 - 8 - - 38 - 2 - _ _ _ - _ - - - - - - - 6 - - 39 - 1 - 1 - - - - - - - - - - - 5 - 1 40 - 2 - - - - - - - - - - - - - 4 - - 41 - 1 - 2 - - - - - - - 1 - - - 5 - 2 42 43 44 - - - 1 - - - - - - - - - - - 2 3 4 - - _ _ „ _ ^ ^ _ _ _ _ _ „ _ _ _ _ 45 - - - - - - - - - - - - - - - 3 - - 46 - _ - - _ - - - - - - - - - - 1 - - 47 _ « _ « _ _ _ « _ _ _ 1 _ _ - - _ 1 Total 1/ 48 48 30 33 10 6 68 98" 48 54 37 45 129 161 105 95 1/ 48 not measured. 50 Appendix Table 2. --(Cont'd) Carapace length (mm) 4 5 M F M F 17 _ — _ - 18 - - - - 19 - - - - 20 - - - - 21 - - - - 22 - - - - 23 1 - - - 24 - - - - 25 1 - - - 26 8 - 5 - 27 15 - 18 - 28 20 - 17 1 29 19 - 32 - 30 9 1 16 - 31 8 - 13 1 32 6 1 9 1 33 1 2 4 - 34 3 2 1 1 35 1 14 - 2 36 - 10 - 2 37 - 3 - 2 38 - 3 - 9 39 - - - 13 40 1 3 - 7 41 - 1 - 1 42 - 1 - 3 43 - 2 - 2 44 - 6 - 5 45 - 2 - 2 46 - 1 - 2 47 - 1 - - 48 - 2 - - 49 - 2 - - 50 - - - - 51 - 1 - - 52 _ _ _ 1 Cruise 16 (Cont'd) Tow nunnber 6 7 8 9 10 11 MF MF MF MF MF MF 1 - - 1 1 - - - - 1 12-2-3- 115-3191 -2-2-5311 110- 1-713-94 22 173 1 - 14 2 2 2 10 3 33 - 9 3 9 3 1 -20 7 42 215 7 9 - 13 5 2 2 30 5 31 8 12 7 17 - 16 8 3 3 15 7 11 10 4 5 9 - -11 1 511 5 -27 4 7 9 1 3 17 - 3 2 13 1 28 1 7 5 - 5 16 - 4 2 16 - 26 - 14 3 1 1 10 - 4 1 12 - 26 - 6 1-7-4-12-20-13 34-6-6-4- 14 -7 715-7-31 10 -5 4-7-12-31--7 -3-5-10-1-1-4 17-4-1--11-- 4-1---1-2-- 2-3-1-1---- 1-2-1- 1 ------ 1 - - - 1 1 Total 93 58 115 55 58 39 71 116 15 68 113 100 l6l 178 74 98 51 Appendix Table 2. --(Cont'd) Carapaci e C ruise 17, 7/24-27/58 length T ow numb er (mm) 1 2 3 4 5 6 7 8 M F M F M F M F M F M F M F M F 14 _ _ „ _ _ _ _ _ „ „ ^ _ _ _ „ 1 15 16 17 - - - 1 1 - - - - - - - - - - 1 3 - _ _ ^ ^ _ _ „ 1 ^ _ _ _ _ 2 18 1 1 2 - - - - - - 1 - - - - 3 2 19 - 1 3 - - - - - 4 - - - - - 14 3 20 1 - 5 1 - - - - 3 2 - - - - 19 1 21 8 2 10 - 1 - - - 7 1 - - 1 - 51 12 22 12 4 17 2 3 - 2 - 4 1 - - 4 - 85 12 23 11 4 8 1 1 - - - 5 1 - - 3 2 67 15 24 5 6 10 8 4 4 3 1 4 5 - - 9 2 45 25 25 3 7 4 11 2 2 11 - - 3 10 - 12 4 19 33 26 1 7 2 8 4 - 9 2 1 6 11 - 8 5 10 45 27 1 10 1 11 8 3 11 1 5 8 14 - 2 3 5 43 28 - 9 1 14 2 2 3 2 - 5 8 - 2 6 - 34 29 - 5 - 12 - 3 2 3 2 4 4 - - 7 - 38 30 - 5 - 6 - 8 1 6 - 3 - 1 - 17 - 23 31 - 3 - 3 - 8 - 9 1 7 - 5 - 9 - 21 32 - 4 - 4 - 7 - 8 - 6 - 7 - 13 - 21 33 - 2 - 3 - 12 - 11 - 8 - 11 - 4 - 11 34 - 2 - 1 - 3 - 4 - 4 - 8 - 3 - 2 35 - - - - - 4 - 8 - 3 - 5 - - - 4 36 - - - - - 3 - 1 - 2 - 7 - 1 - 1 37 _ - _ _ - 2 - 1 - 2 - 1 - 2 - 1 38 - - - 1 - 2 - 1 - - - 1 - - - 1 39 - - - - - - - 1 - - - 1 - - - - 40 - _ - _ _ - - _ - - - 1 - - - - 41 - - - - - - - 3 - - - - - - - - Total 43 72 63 88 25 63 42 62 37 72 47 48 41 78 322 351 52 Appendix Table 2, --(Cont'd) Carapace Cruise 18, 8/5-8/58 Cruise 19, 8/22-23/58 length Tow number Tow number (mm) 1 2 3 4 5 6 1 2 3 M F M F M F M F M F M F M F M F M F 17 - - - - - - - - - - - - - 1 - - - 1 18 - - - - - - - - - - - - 2 2 2 1 3 1 19 - - - - - - - - - - - - 3 1 1 1 - - 20 - - - - - - - - - - - - 3 5 1 1 1 2 21 - - - - - - - - - - - - 2 3 3 - 1 1 22 1 - 1 - - - - - - - - - 3 3 2 3 2 1 23 1 - - - - - - - - - - - 1 4 - - 3 - 24 2 1 2 - - - - - - - 1 - 2 1 2 - 1 - 25 5 - 2 - 2 - - - - - - -. 7 - 3 1 4 - 26 8 - 3 - 10 - 1 - - - 6 - 8 - 7 1 1 - 27 1 1 8 1 12 - 1 - 3 - 17 - 13 - 8 - 6 3 28 2 1 12 - 6 1 9 - 7 - 22 - 9 5 8 2 3 1 29 1 1 4 3 3 2 24 - 6 3 12 - 6 3 6 2 3 4 30 - 1 1 - 1 7 15 - 4 - 4 1 1 2 1 2 - 1 31 - 7 2 5 3 9 17 - 1 - 1 - 1 5 - 6 - 5 32 - 5 1 8 - 8 4 1 1 - 1 1 - 10 - 1 - 5 33 - 1 - 6 2 8 3 2 3 - - 1 - 9 - 3 - 8 34 - - 2 3 2 8 2 1 1 - - 5 - 5 - 3 - 3 35 - 1 1 4 1 2 1 3 1 3 - 10 - 7 - 7 - 9 36 - - - 5 1 4 1 4 1 3 - 3 - 5 - 10 - 4 37 - 1 - 3 - 2 - 7 _ - - 2 - - - 2 - 2 38 - - - 2 - 4 - 6 - 1 - 7 - 4 - _ _ 3 39 - - - - - 1 - 7 - 3 - 5 - - - - - - 40 - - - 2 - 1 - 7 - 3 - 2 - - - 1 - - 41 - 1 - 4 - 1 - 2 - 2 - - - 1 - - - _ 42 - - - - - - - 2 - 6 - 3 - - _ - _ - 43 - - - 2 _ 3 - - - 2 - 2 - - - - - _ 44 45 46 47 48 AQ - - - 2 - - - 2 3 - 2 4 1 1 2 - 1 - - - - - - - - - 2 1 - 3 - - - 1 - - - - - - - - - - - - - - - - - - - - - - 50 ^ _ _ _ _ _ _ _ _ 1 ^ _ _ _ _ _ _ _ 51 - - - _ - - - - - .. - - - - - - - - 52 _ _ _ ^ « _ _ _ _ 2 _ _ ^ _ _ _ _ _ Total 21 21 39 53 43 64 78 47 28 39 64 44 61 76 44 47 28 54 53 Appendix Table Z. --(Cont'd) Carapace Cruise 19. (Cont'd) length Tow number (mm) 4 5 6 7 11 12 13 14 MF MF MF MF MF MF MF MF 16 _____-_-_---lll_ 17 _-___------11412 18 ii--_--_----3342 19 _l---------12575 20 _-__-_____2174 19 9 21 2---------1-4987 22 ___--_------4546 23 i_---_-__--15646 24 i_i_2-----l-13 367 25 13-2-5---2-2-6531 26 9-4-6-1-3-4-6273 27 1124-6---6-3-10 151 28 638-7- 1-9 115-3364 29 396- 10 -1-714-3715 30 2 13 214---533-111-4 31 _7-1222--414-8-3 32 -713161--6-7-11-4 33 - 15 - 6 - 1 - - - 10 1 10 - 13 - 4 34 -13 16-41-19-9- 10-1 35 -13-12 16---5-6-6-4 36 -3-11-8---615-10-1 37 -2-9-2---714-2-- 38 -2-3-3-2-6-2-1-1 39 _i_3-5---2-l-3-- 40 _i_4_3__-3---l-- 41 ___4-2---l------ 42 ---4-2-1-1-1---- 43 ---1---2---1-1-- 44 ___2---l---l---- 45 46 47 48 49 50 Total 49 93 29 72 44 44 7 6 33 65 39 55 69 135 76 80 54 Appendix Table 2. --(Cont'd) Carapace Cruise 20, 9/8- -12/58 length Tow number (mm) 1 2 3 4 5 6 7 8 M F M F M F M F M F M F M F M F 10 1 _ _ _ ^ „ ^ _ _ „ _ ^ „ _ _ _ 11 1 1 - - - - - - - - - - - - - - 12 8 3 1 - - - - - - - - - - - - - 13 20 17 - 1 - 1 - - - - - - - - - - 14 18 20 - 5 - - - - - - - - - - - - 15 17 25 5 8 - 1 - - - - - - - - - - 16 20 20 5 7 - - 1 - - - - - - - - - 17 8 19 9 11 - 1 - - - - - - - - - - 18 8 14 5 6 - - - - - - - - 1 - - - 19 4 5 3 4 2 - 1 - - - - - - - - - 20 1 1 4 6 1 1 1 - 1 1 - - - - - - 21 1 - 4 1 - - 2 1 - - - - - - - - 22 - 1 1 2 3 - 1 1 - - - - - - - - 23 - - 4 1 - - - 1 1 - - - - - - - 24 - 1 1 1 3 - 1 - - - - - - - - - 25 1 - 1 1 1 - 1 - - - - - - - - - 26 1 - - - 5 - - 1 - - - - - - - - 27 - 1 - 1 1 - 9 - - - - - - - - - 28 1 2 - - 5 1 6 - 3 - - - - - 3 - 29 1 2 - - 11 1 12 - 7 - 1 - 4 - 1 - 30 _ 1 - - 11 1 7 - 10 - 12 - 6 - 6 - 31 _ _ - - 5 - 1 - 6 - 8 - 13 - 7 - 32 - 2 - 1 2 - 1 - 3 - 4 - 7 2 5 - 33 - 6 - _ 1 - - 1 1 - 2 - 2 - 2 - 34 - 1 - - - 1 - 2 3 - 1 1 - - 1 - 35 - 2 - - 1 2 - 5 - 3 - 1 - - 1 - 36 - 1 - 2 1 1 - 1 - 3 - 3 - - 1 1 37 - - - - - 5 - 5 - 3 1 1 - 2 1 3 38 _ _ - 1 _ 4 - 2 - 5 1 7 - 7 - 1 39 - - _ _ - 3 - 4 - 6 - 8 1 8 - 6 40 - - - _ - 10 - 2 - 4 - 4 - 5 - 6 41 - - - - - 3 - 1 - 3 - 9 1 4 - 1 42 - - - - - - - - - 2 - 4 - 7 - 8 43 _ _ _ _ - 2 _ 1 _ - - 2 - 3 - 3 44 - - - - - - - - - 1 - - - 2 - 4 45 _ - - - - - - - - 3 - 2 - 5 - - 46 47 48 49 50 - - - - - 1 - 1 - 1 - 1 2 - 1 - 2 - - - - - - - - - - - 1 - 1 1 - - _ _ _ _ _ _ _ _ _ - - - - - - 51 - - - - - - - - - - - 1 - - - - Total 111 145 43 59 53 39 44 29 35 35 30 47 35 48 28 35 55 Appendix Table 2. --(Cont'd) Carapace Cruise 20, (Cont •d) length Tow number (mm) 9 10 11 12 13 14 15 16 M F M F M F M F M F M F M F M F 12 13 - - - - - - - 1 - - - - - - 1 1 14 15 - - - - - 1 - 1 5 2 - - - - 1 1 2 2 16 - - - - 1 - 3 9 2 1 - - - 1 2 9 17 - - - - 2 - 2 9 1 1 - - - 1 3 7 18 - - - - 1 4 3 3 2 2 - - - 4 6 6 19 1 - - - 2 6 4 6 1 1 - - - 1 8 7 20 - - - - 3 2 2 4 2 3 - - 1 1 3 6 21 - - - - 5 5 2 2 2 - - - 1 2 2 7 22 - - - - 1 2 2 2 2 1 - 1 - - 1 3 23 - - - - 2 3 8 1 1 3 1 - 1 - 2 4 24 - - - - 3 4 - 1 1 3 1 - - 1 1 1 25 - - - - 3 1 1 1 2 - - - - 1 - 2 26 - - - - 3 - - - 3 - - - - - 1 1 27 1 - 1 - 6 1 - - 3 1 1 - 1 - - 1 28 - - 1 - 3 1 2 - 2 - 1 - 4 - 2 1 29 - - 5 - 3 - - - 7 - 6 - 3 - - - 30 1 - 4 - - - - 1 - 6 - 5 - - - 31 1 - 2 - 1 - - 1 2 3 - - - - - 32 3 - 2 - - 1 - - 2 - - 1 - 1 - 33 1 - 5 - - 3 - - 2 2 - - - - - 34 1 - - - - 6 - - 2 1 - - - - - 35 - - 1 4 - 5 - - - 2 - - - - - - 36 - - - 1 - 2 - - - 1 - 2 - - - 1 37 - - - 6 - - - 1 - 5 - 1 - 1 - 3 38 - 2 - - 1 - 2 - - - - - 7 - 2 - - 39 - - - 2 - 1 - - - - - 4 - 1 - - 40 - - - 2 - - - - - 2 - 1 - - - 1 41 - - - 3 - - - - - - - 2 - - - - 42 - 2 - 1 - - - - - - - 1 - - - - 43 - 2 - - - - - - - - - 1 - - - - 44 - - - 1 - - - - - - - - - - - - 45 - - - - - - - - - - - 1 - - - - 46 - - - 1 - - - - - - - - - 1 - - 47 _ _ _ - - - - - - - - - - 1 - - 48 - - - - - - - - - - - - - 1 - - Total 6 21 22 39 50 29 51 35 34 22 21 17 20 34 65 56 Appendix Table 2. — (Cont'd) Carapace Cruise 20 (Cont'd) Cruise 21, 9/23-27/58 length Tow number Tow number (mm) 17 18 19 1 2 3 4 5 M F M F M F M F MF MF MF MF 13 1 - - - - - - - - - - - - - - - 14 - - - - - - - - - - - - 1 1 - - 15 1 - - 1 1 - _ - - - 2 1 _ 1 - - 16 1 2 - 6 2 - 3 - - - 2 - - - - - 17 3 1 - 5 - 4 5 1 - - 5 3 4 1 - - 18 7 3 - 1 1 2 4 7 - 1 4 5 8 3 - _ 19 2 6 3 9 4 1 3 6 2 2 3 6 3 3 1 - 20 4 4 - 5 - 2 - 8 - - 5 7 2 5 1 1 21 2 1 4 8 2 3 2 4 - - 6 4 6 5 4 4 22 1 - 6 1 _ - 1 3 - 1 5 7 1 6 6 1 23 3 2 3 4 - - 1 - - - 7 6 2 3 1 2 24 3 - 1 - - 2 1 - 1 - 3 2 1 1 1 6 25 - 1 2 2 1 1 - 1 - - 11 4 - - 2 3 26 3 - 2 2 4 1 2 - - - 4 1 4 5 - 2 27 3 - 3 - 3 1 2 5 - - 1 - - 3 - 2 28 6 1 5 _ 4 - - 1 - - - 1 - 2 - - 29 2 - 1 1 2 - 1 5 - - - - 1 4 1 - 30 2 - 1 - 3 2 - 3 - - 1 - - - 1 - 31 1 1 1 1 1 - - 2 - - 1 2 - - 9 - 32 - - - - - 1 - - - - - - 1 - 4 - 33 - 2 - 2 - 1 - 2 - - - 1 1 1 1 - 34 - 2 - 2 - 2 - 1 - 1 - 2 - 1 3 - 35 - 2 - - 1 6 - 2 - 1 - 1 - 6 1 - 36 - - - 1 - 4 - 3 - - - 1 - - 3 - 37 - 3 - 3 - 4 - 1 - - - - - 3 2 2 38 - - - 1 - 3 - - - - - 2 - 1 1 - 39 - - - - - 2 - - - - - - - 1 - 1 40 - 1 - 2 - - - - - - - - - 1 - 5 41 - - - - - 1 - - - - - - - 2 - 3 42 43 44 - - - - - 1 - - - - - - - 2 - 1 2 _ _ _ _ _ _ _ _ _ _ _ _ „ „ 45 - - - - - - - - - - - - - - - 1 46 - - - - - - - - - - - - - - - 4 47 - 1 - - - - - - - - - - - - - 1 48 - - - - - - - - - - - - - - - 1 49 - - - - - - - - - - - - - - - 1 Total 45 33 32 57 29 44 25 55 6 60 66 35 61 41 43 57 Appendix Table 2. --(Cont'd) Carapace Cruise 21 (Cont'd) length Tow number (mm) 6 7 8 9 10 12 14 15 MF MF MF MF MF MF MF MF 16 _____________i_i 17 _____________13_ 18 21----------2163 19 ______il_-_-li53 20 43----1-----3126 21 641--1------1119 22 431143-1-----154 23 1421---1------21 24 1422-1---------1 25 5-21-1--11-----2 26 321--11----1-1-2 27 23----1-----1--- 28 _i__--32-------- 29 _l__l_3-----32-l 30 -_l_2-l-----121- 31 __2-3----------- 32 5-1-9-42-----11- 33 2-2-4------1-5-4 34 i_3-7--l-l---5-l 35 2-3--1-6---2111-4 36 2-1-1--5-1---9-9 37 l_____-14---l-14-4 38 __2--2-9---l-5-4 39 -1122318-1---6-1 40 _2-2-3-7---l-l-- 41 _2-2-3-2---l-2-- 42 _____5-l-------- 43 -1-3-3-1-------- 44 _i_4-2-l-------- 45 ________________ 46 _2-4-6-2-----l-- 47 ___5-3---------- 48 ___3-4---------- 49 -3-4-2-1-------- 50 _____2-l-----l-- 51 ____-_-__-__---- 52 ________-___---- 53 _l_l-___-------- 54 ___i_____-_----- 55 _________------- 56 1-------------- Total 41 40 25 36 33 46 16 66 1 4 - 8 13 73 26 60 58 Appendix Table 2 (Cont'd) Carapace Cruise 21 (C ont' d) Cruise 22, 10/17 -19/58 length T ow numb er Tow number (mm) 16 17 18 1 2 3 4 5 M F M F M F M F M F M F M F M F 13 _ _ _ ^ _ _ 1 1 14 - - - _ _ _ _ _ _ _ _ 15 - - - - - _ 1 4 1 1 3 3 1 1 1 16 - - - - - - 2 3 10 10 1 1 3 1 4 1 17 1 - - - - - 6 1 15 8 2 4 1 2 7 3 18 1 - - - 1 2 4 3 20 15 3 4 4 1 5 6 19 4 3 - - 9 1 3 3 17 14 6 5 1 8 _ 4 20 3 3 - 1 3 3 2 4 5 4 1 10 4 4 2 2 21 5 1 2 1 9 10 1 1 1 5 1 2 2 5 2 2 22 8 6 3 - 5 6 3 4 2 3 1 2 2 2 5 23 2 3 1 1 5 7 4 2 1 _ _ 3 4 3 _ 2 24 13 5 1 - 3 5 4 3 1 _ _ 1 2 25 7 10 1 2 3 4 7 3 2 _ _ _ 5 1 26 6 4 3 - 1 - 4 3 1 2 1 ^ 4 3 27 9 4 1 1 - 6 3 4 _ _ _ _ 2 1 28 7 1 3 2 - - - 2 _ 1 1 _ _ 5 29 6 - - 4 1 2 _ 2 1 _ 1 _ 2 1 30 2 3 1 - 1 2 - 2 1 1 2 _ _ 3 1 31 1 1 1 1 - - - 1 _ _ 1 2 1 5 2 1 32 2 1 8 2 1 - - - - 1 1 4 1 4 1 33 - 2 2 1 2 - - 4 - 1 - 3 ^ 3 1 1 34 - 3 2 2 - 2 - 3 _ _ „ 1 _ 1 35 1 3 - 3 1 - _ 2 1 4 ^ 1 _ 3 1 36 - 3 1 2 - 1 - - _ 1 _ 3 „ 3 _ 1 37 - 1 - 6 - - - 3 - 2 _ 3 ^ 1 1 5 38 - 3 - 3 1 - - - - _ « 2 _ 2 ^ 3 39 - - 1 4 - - - - - 1 _ 3 _ 2 _ 5 40 - 2 - 4 - 1 - _ _ _ _ 2 ^_ _ 1 41 - 1 - 5 - 2 _ _ _ 1 _ 1 ^^ _ _ 5 42 - - - 5 _ _ _ ^ _ _ 1 43 - - - 3 _ _ „ _ _ _ _ _ 1 44 - - - 4 _ 1 _ ^ ^ _ 1 45 - - - 2 - - - - - - - - - - - 2 Total 78 63 31 59 46 55 44 58 80 75 25 60 39 64 26 55 59 Appendix Table 2. --(Cont'd) Carapace Cruise 22 (Cont'd) Cruise 23, 11/4-7/58 length Tow nunnber Tow number (mm) 6 7 8 9 1 2 3 4 M F M F M F M F M F M F M F M F 14 - - - 1 - - - - - - - - - - - - 15 - - 2 2 - - - - - - - - - - 1 1 16 - - - 5 - - - - - - - - - - - - 17 1 3 3 9 - - - - - - - 1 - - 3 - 18 3 2 3 1 1 - - 1 2 2 - - - - 1 1 19 1 2 5 3 - - - - 1 5 2 2 - - 1 - 20 1 2 4 7 - - - 1 4 5 1 2 - - - 2 21 - - 2 5 - - - - 10 5 5 5 - - 4 2 22 2 3 - 2 1 - - 2 4 7 8 4 - 2 1 23 1 3 2 2 - - 1 2 5 9 14 3 1 2 2 24 - - 2 1 1 - - - 1 4 11 8 - 1 1 25 - - 5 1 3 - 2 - 4 8 9 5 3 1 4 26 2 3 2 2 5 1 4 2 2 1 5 5 2 - 2 27 1 1 1 - 12 1 4 3 - 1 2 5 - 2 2 28 4 1 _ 1 11 1 9 3 3 2 6 - 3 2 1 29 3 - 1 2 8 2 8 8 1 - - 2 3 1 - 30 3 2 - - 4 5 5 5 4 1 4 3 2 5 - 31 2 5 - - 3 2 1 12 3 2 2 3 4 - 2 32 2 1 - - 2 1 1 1 - - 4 3 4 - 1 33 _ 1 1 1 3 1 1 4 1 1 - 3 1 - 2 34 - - - 1 1 1 - 1 - 1 1 1 3 - 2 35 - 2 - - - 1 2 2 - 4 - 1 1 - - 36 _ 2 - 2 - - - 2 - 3 - - 1 - 3 37 - 2 - - - 1 - - - 2 - 1 1 - 3 38 _ 1 - 1 - 1 - 1 - 5 - - - - 1 39 - 1 - 1 - - - - - 2 - - - - - 40 _ 2 - 1 - - - - - 1 - 1 - - - 41 - 2 - - - 1 - 1 - 2 - - - - - 42 - 1 - - - 1 - - - 1 - 1 - - - 43 - - - 2 - 1 - 1 - 1 - - - 3 - - 44 - - - - - - - - - - - - - 4 - - 45 _ - - - - 1 - - - - - - - 2 - - 46 _ « _ _ _ - - - - - - - - 3 - - 47 • _ - - - - - - - - - - - - 1 - - 48 - - - - - - - - - - - - - - - - 49 - 1 - - - 1 - - - - - - - - - - Total 26 43 33 53 55 23 38 52 45 75 74 69 29 30 26 33 60 Appendix Table 2. --(Cont'd) Carapace Cruise 23 (Cont d) length Tow numb er (mm) 5 6 7 8 9 10 11 12 M F M F M F M F M F M F M F M F 15 _ 1 _ ,. _ _ _ ^ ^ _ _ _ _ ^ . _ 16 - 2 - - - - - _ - - - - - - _ _ 17 2 - - _ - - - - - - - _ - - - _ 18 3 1 - - - - - - - - - - - - - - 19 3 1 3 - 1 - - - - - - - - - - - 20 5 - 2 - 3 1 - - - - - - _ - 1 1 21 2 1 1 G 3 - - - - - - - - 3 - 22 1 3 6 10 4 - - - - 2 - - - 6 1 23 1 2 3 10 7 - - - - - - 1 - 3 2 24 - 2 - 12 6 - - - - - _ 2 2 2 2 25 - 2 2 11 7 1 - - - - - 7 2 4 I 26 1 - 1 6 4 - - - - 1 1 6 1 5 4 27 - 1 - 8 1 - - - - 1 - 4 6 3 2 28 - 3 1 - 1 - - - - - 1 3 2 1 2 29 1 1 1 2 2 - - 2 - - - 3 3 - 1 30 - - 1 - 3 - - 3 - 1 - 8 4 3 3 31 - 1 2 - 1 - - 8 - 8 - 11 1 2 2 32 - - 2 - - 9 - 6 5 6 2 7 1 - - 33 1 2 1 - - 3 - 4 3 5 3 3 1 - 3 34 - 1 - - - 6 - 3 3 1 - 2 4 - 2 35 - 3 - - - 3 - 2 4 2 6 2 1 - 1 36 - 1 - - - 4 - 2 2 3 5 1 2 - 1 37 1 1 - - 1 2 - - 2 1 3 1 1 - 1 38 - 4 - - - 1 - - - - - - - - 39 - 2 - - - - - - - - - - 1 - 40 - - - - - - 3 - - - - - - 3 41 - 1 - - 1 - 5 - 1 2 - 1 _ - 42 - - - - - - - 4 - - - - - - - 43 - 2 - - - - - 5 - - - - 2 - - 44 - - - 1 - - - 2 - - 3 - 1 - - 45 - - - - - - - 2 - - 1 _ _ - - 46 - - - - - - - - - - 3 - - - 1 47 48 49 - - - - - - - 1 - - 1 2 1 - 2 - 1 ^ _ ^ _ _ _ _ _ ^ _ „ _ _ _ _ 50 - - - - - - - - - - - 1 - - - - 51 - - - - - - - - - - - - - - - - 52 - - - - - - - - - 1 - - - - - - Total 21 38 26 31 69 42 29 22 30 26 32 35 61 37 34 34 61 Appendix Table 3. --Size equivalents for shrimp, P. duorarum Burkenroad Carapace length (mm. ) Total length (mm, ) Count per (includes rostrum) pound (heads off) 20 87 ITO 21 90 100 22 93 92 23 97 83 24 100 74 25 103 67 26 107 60 27 110 55 28 113 51 29 117 46 30 120 42 31 123 39 32 127 36 33 130 33 34 133 31 35 137 28 36 140 26 37 143 25 38 147 23 39 150 21 40 153 20 41 156 19 42 160 18 43 163 17 44 166 16 45 170 15 46 173 14 47 176 13 48 180 13 49 183 12 50 186 11 62 MS #983 GPO S983«: iiiiii ;«'■