CalCOFI Reports, Vol. 11, 1967 - California Cooperative Oceanic ...

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114 CALIFORNIA COOPERATIVE OCEANIC FISHERIES INVESTIGATIONSmost commonly either visually or with f athometers,the most successful method is to attract the baitschools at night with lights. This latter method,developed in the Los Angeles-Long Beach Harborarea, employs a small skiff with a gasoline-poweredgenerator which supplies 500- to 1000-watt lights. Thelight both attracts and holds bait schools so that theycan be netted.After being caught, the bait is either sold directlyfrom the bag of the net or transferred to one of thevarious holding facilities for sale later.Live Bait CatchIn 1935, California initiated a program of personalinterviews with live-bait fishermen to obtain informationabout the extent of the fishery. Since 1939, theDepartment has collected fishing logs. The presentversion of the logs is combined with personal interviewsand sampling to determine the amount of fishsold as live bait, the species composition of the catchlocalities of catch, and fishing effort. Catches arerecorded by the fishermen in ‘(scoops7’ which areconverted into pounds by Department personnel.Live-bait catches have fluctuated between 4,000 and7,000 tons annually since 1950 (Table 4). In recentyears, sales have been estimated at about 1.5 milliondollars per year.POPULATIONAge ComfiositionThe Department routinely sampled the commercialanchovy catch from 1952 through 1957 and hassampled the live bait catch since 1955. Age compositionshave been determined cooperatively with theU.S. Bureau of Commercial Fisheries. The commercialanchovy season extends from April 1 throughMarch 31.In central California, particularly, the age compositionof the catch has been somewhat variable. From1952-53 through 1953-54, ages 11, 111, and IVpredominated the landings. Beginning in 1954-55,following increased anchovy fishing, the 1954 yearclassbegan to dominate the landings. In 1954-55,80.4 percent was fish-of-the-year ; in 1955-56, 79.0percent was 1954 year-class fish as 1-year-olds andin 1956-57, this time as 2-year-olds, the 1954 yearclasscontributed 73.8 percent of the catch. Fish upto 6 years old were sampled. The central Californiafishery seems to depend upon sporadic good yearclasses from a localized population. This agrees withthe report of Ahlstrom (1956) that good spawningsuccess is intermittent in the area north of PointConception.The commercial catch off southern California between1952 and 1957 was comprised chiefly of l- andANCHOVY LANDINGS FOR THE YEARS 1916-19641920 1925 1930 1935 1940 1945 1950 1955 1960FIGURE 2.California Commercial Anchovy landings, 1916-1964 (in tans).
~~ ::REPORTS VOLUME XI, 1 JULY 1963 TO 30 JUNE 1966 11510LIVEBAIT98az0.4- 7LLO6v)nz353;4321IIIIIIIIIIII I II48 50 52 56 58 60 62 64IImbFIGURE 3.YEARlive-bait catch of anchovies in California, 1939-1964 (in tons).TABLE 4LIVE-BAIT CATCH OF ANCHOVIES IN SOUTHERN CALIFORNIA,1939-1964 (CATCH FROM 1942-45 NOT RECORDED)Year I Catch (tons)-11942 ................1943 ................1944 ................1945 ................1946.. ...............1947 ................1948 ................1949 ................1950.. ..............1951-. ..............1952 ................1953 ................1954 ................1955- ...............1956 ................1957 ................195L ..............1959-. ..............1960 ................257.5--__--2,748.12,854.03,725.52,802.43,823.85,141.96,810.46,391.56,686.06,125.46,331.84,110.14,235.94,737.54,657.51 5,912.51961 ................1962-.. ............. 6.166.51963 ................ 4,442.01964_. .............. 5,191 .O2-year-old fish with varying amounts of fish-of-theyear.The 1954 year-class also dominated this catch;however, not so completely as in central California.The oldest fish sampled in the southern Californiacommercial fishery was 5 years old (Table 5).The live bait catch between 1955 and 1962 wasconsistently dependent upon 1- and 2-year-old fisheach year. One-year-olds contributed 38.9 to 56.3percent of the catch and 2-year-olds, 30.6 to 51.5Central California1952-53 .............. 1.91953-54 .............. 7.71954-55---____._-.--- 80.41955-56--______-..--- 10.11956-57 .............. 6.0Southern California1952-53 ..............1953-54 ..............1954-55--_-.._..-.---1955-56 ..............1956-57 ..............38.317.210.74.31.4TABLE 5AGE COMPOSITION OF THE COMMERCIAL NORTHERN ANCHOVYCATCH FOR THE SEASONS 1952-53 THROUGH 1956-57Percentage composition by age- __1-6.99.85.579.09.519.932.052.949.518.8-31.635.84.8a. 173.830.634.829.536.261.8333.328.54.02.38.518.013.45.610.016.119.714.55.00.32.16.2 0.42.9 0.80.3 _.0.2 _.0.1 _.13.1::;_ _._ __ ..1.7 0.2 I ..
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STATE OF CALIFORNIAMARINE RESEARCH
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STATE OF CALIFORNIADEPARTMENT OF FI
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RONALD REAGAXGovcriwr of the Slate
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PART 1REVIEW OF ACTIVITIESJuly 1,19
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REPORTS YOLUAIE SI, 1 JULY 1963 TO
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REPORTS VOLUNE XI, 1 JULY 1963 TO 3
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REPORTS YOLUME SI, 1 JULY 1963 TO 3
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REPORTS VOLUME XI, 1 JULY 1963 TO 3
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REPORTS vor,uiwIi; SI, 1 JULY 1063
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REPORTS TOT2T71\IF: SI, 1 JUJIT 196
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IiEPOHTS TOLUME XI, 1 JULY 1963 TO
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REVIEW OF THE PELAGIC WET FISHERIES
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KEI'OiiTH TOLUJIE SI, 1 JULY 1963 T
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PART IISYMPOSIUM ON ANCHOVIES, GENU
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OCEANIC ENVIRONMENTS OF THE GENUS E
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KEI'OKTS VOLIXI.: SI, 1 JULY 1963 T
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~~~REPORTS VOLUME XI, 1 JULY 1963 T
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REPORTS VOLUME SI, 1 JULY 1963 TO 3
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130'E 132' 134' 136' 138' 140' 142-
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REPORTS VOLUSIE SI, 1 JULY 1963 TO
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KI3I’ORTH VOLUJIE XI, 1 JULY 1963
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REPORTS VOLUME SI, 1 JULY 1963 TO 3
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Page 69 and 70: INFLUENCE OF SOME ENVIRONMENTAL FAC
Page 71 and 72: REPORTS Y‘OLUJIE XI, 1 JULY 1963
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Page 75 and 76: ~table shows the values calculated
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Page 79 and 80: REPORTS POLGNE SI, 1 JU LY 1963 TO
Page 81 and 82: REPORTS VOLUXE XI, 1 JULY 1963 TO 3
Page 85 and 86: _________--_____REPORTS VOLUJIE SI,
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Page 89 and 90: -20/5-0 10-f 5-w 25-0 20-= 15-: 10-
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Page 97 and 98: REPORTS VOLURlE SI, 1 JULY 1963 TO
Page 107 and 108: THE PREDATION OF GUANO BIRDS ON THE
Page 109 and 110: iod and after 8 AM during the rest
Page 115: FISH E RYThe California anchovy fis
Page 119: CO-OCCURRENCES OF SARDINE AND ANCHO
Page 122 and 123: 120 CALIFORNIA COOPERATIVE OCEANIC
Page 124 and 125: CALIFORNIA COOPERATIVE OCEANlC FISH
Page 128 and 129: 126CALIFORNIB COOPERATIVE OCEANIC F
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Page 138 and 139: THE ACCUMULATION OF FISH DEBRIS IN
Page 143 and 144: PART IllSCIENTIFIC CONTRIBUTIONS
Page 147 and 148: REPORTS VOLUME SI, 1 JULY 1963 TO 3
Page 151 and 152: REPORTS VOLU&IE XI, 1 JULY 1963 TO
Page 157 and 158: SUMMARY OF THERMAL CONDITIONS AND P
Page 159 and 160: SEASONAL VARIATION OF TEMPERATURE A
Page 163 and 164: including the semiannual harmonic?
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REPORTS VOiLUME XI, 1 JULY 1983 TO
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170 CALIFORNIA COOPERATIVE OCWIC FI
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172 CALIFORNIA COOPERATIVE OCBANIC
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174 CALIFORNIA COOPERATIVE OCEANIC
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184CALIFORNIA COOPERATIVE OCEANIC F
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CONTENTSI. Review of Activities Pag
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