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  • 11
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    Biological characteristics of the catch from the 1986-87 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/334 | 8 | 2011-09-29 22:13:42 | 334 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: In Tomales Bay, 4-, 5-, and 6-yr-old herring, Clupea harengus pallasi, composed 85% by number of the 1986-87 season's catch. In San Francisco Bay, 2-, 3-, and 4-yr-old herring composed 88% of the roundhaul catch, and 4-, 5-, and 6-yr-old herring composed 86% by number of the gill net catch.The age composition of both the Tomales Bay and San Francisco Bay gill net catch has shifted to primarily 4-, 5-, and 6-yr-old herring.Recruitment of 2-yr-old herring into the San Francisco Bay roundhaul fishery was good, with the 1985 yr class composing 37% of the catch.The mean length of herring in the San Francisco Bay roundhaul catch decreased to 174 mm BL, and the mean length of the gill net catch decreased to 194 mm BL. The mean length of the Tomales Bay catch also decreased to197 mm BL.Average weight at age of Tomales Bay herring is below average for the fourth consecutive year. In San Francisco Bay the average weight at age is above average, even though length at age declined slightly. (20pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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  • 12
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    Pacific herring, Clupea harengus pallasi, studies in San Francisco Bay, April 1986 to March 1987 (2021)
    California Department of Fish and Game, Marine Resources Region | Menlo Park, CA
    In:  http://aquaticcommons.org/id/eprint/335 | 8 | 2011-09-29 22:13:44 | 335 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Herring schools were surveyed hydroacoustically and sampled in San Francisco Bay from late October 1986 to March 1987. Eight large schools (greater than 1000 tons each) spawned from December to February and seven smaller schools were detected throughout the spawning season. Total acoustic biomass estimate using a "visual integration" technique was 40,930 tons, and it was determined from spawn escapement and commercial landings that an additional 2240 tons were not detected. This is a slight increase from last season's total of approximately 42,200 tons. For the first time, biomass was also estimated using echo integration equipment. A total biomass was obtained of 33,050 tons, including herring not detected acoustically. This estimate must be considered preliminary and subject to revision after target strength of San Francisco Bay herring is determined.Eighty-seven samples, containing a total of 13,125 herring, were collected with variable-mesh gill net and midwater trawl or obtained from the roundhaul and gill net fisheries. Mean body length (BL) of sampled herring decreased by about 20 mm from the beginning to the end of the spawning season. A combination of variable-mesh gill net and midwater trawl samples for a particular school closely approximates mean BL and age composition data from unbiased roundhaul samples.Age-weight and age-length relationships were average to above average compared with those of the previous two seasons. The 1982 year class exhibited unusually good growth, with a mean BL of 202.8 mm for herring aged from stratified random samples.The 1982 through 1985 year classes (5- through 2-yr olds)contributed 97% by number and 95% by weight to the total 1986-87 spawning biomass in San Francisco Bay. Good recruitment has occurred during the past four seasons. The weak 1981 year class contributed little to the total biomass as 6-yr olds.Average catch per tow of young-of-the-year (YOY) herring is a potential index of abundance for recruitment 18 months later as 2-yr olds. Estimated recruitment has only varied by 15% during the past three seasons and does not reflect the magnitude or trend in YOY catches in the bay. (85pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi ; San Francisco Bay ; California
    Repository Name: AquaDocs
    Type: monograph
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  • 13
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    Southern California marine sport fishing from privately owned boats: catch and effort for October-December 1982 (2021)
    California Department of Fish and Game, Marine Resources Region | Santa Barbara, CA
    In:  http://aquaticcommons.org/id/eprint/330 | 8 | 2011-09-29 22:13:13 | 330 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The catch landed and effort expended by private-boat sportfishermen were studied in southern California marine watersbetween October and December 1982, to determine the impact of one segment of the sport fishery on local marine resources. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species whose catches are regulated by minimum size limits.An estimated 157,000 organisms were landed by 57,700 anglers and 4800 divers. The major components of the angler catch were Pacific mackerel, Scomber japonicus (28,700 estimated catch): white croaker, Genyonemus lineatus (24,000 estimated catch); and Pacific bonito, Sarda chiliensis (16,700 estimated catch). These three species represented almost half the total estimated angler catch. Rockfishes, Sebastes spp: were a major catch component; the 35 rockfish species landed made up 24% of the estimated catch. Divers landed an estimated 14,700 fishes and invertebrates. Chief among these were abalone, Haliotis spp. (4200 estimated catch);rock scallop, Hinnites rugosus (3600 estimated catch); andCalifornia spiny lobster, Panulirus interruptus (2500 estimated catch).Angler and diver compliance with size-limit regulations wasgenerally favorable, with diver compliance being particularly scrupulous, especially with invertebrate species. The compliance rate for California halibut, Paralichthys californicus, showed a drop from the previous quarter (July - September 1982) from 70 to 59% legal. During the same time period, size-limit compliance rose from 4 to 20% for Pacific bonito, a species with a tolerance allowing the take of some under-sized fish. (28p.)
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; white croaker ; Genyonemus lineatus ; Pacific bonito ; Sarda chiliensis ; Rockfishes ; Sebastes spp ; abalone ; Haliotis spp. ; rock scallop ; Hinnites rugosus ; California spiny lobster ; Panulirus interruptus ; California halibut ; Paralichthys californicus
    Repository Name: AquaDocs
    Type: monograph
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  • 14
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 16, April to June, 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/345 | 8 | 2011-09-29 22:12:20 | 345 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June of 1983, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (149pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
    Type: monograph
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  • 15
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 19, January to March, 1984 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/348 | 8 | 2011-09-29 22:12:53 | 348 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in January to March 1984, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (141pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
    Type: monograph
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  • 16
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 17, July to September, 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/346 | 8 | 2011-09-29 22:12:47 | 346 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreationa1 Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in July to September 1983, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (159p.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
    Type: monograph
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  • 17
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 8, April to June, 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/350 | 8 | 2011-09-29 22:11:53 | 350 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June 1981, is presented in a data report format. Data in this quarterly report aresubdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (131pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
    Type: monograph
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  • 18
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    Southern California marine sport fishing from privately owned boats: catch and effort for January-March 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Santa Barbara, CA
    In:  http://aquaticcommons.org/id/eprint/329 | 8 | 2011-09-29 22:15:29 | 329 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The catch landed and effort expended by private-boat sport fishermen were studied in southern California between January and March 1983 in order to determine the impact on local marine resources by one segment of the sport fishery. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. Thisreport contains quantitative data and statistical estimates of total effort, total catch, catch of selected species, and length frequencies for those species with minimum size limits.An estimated 74,200 organisms were landed by 29,400 anglers and 1500 divers. The major species in the angler catch included white croaker, Genyonemus lineatus, (16,000 landed) and Pacific mackerel, Scomber japonicus (14,000 landed). The two species combined made up 44% of the total estimated angler catch. Divers, hampered in their activity by stormy conditions, landed an estimated 1700 rock scallop, Hinnitesmultirugosus. This single species represented almost a third of the estimated diver catch.The length frequency data, collected for size-regulated fish and shellfish species, show that minimum size-limit compliance was very good for both angler-caught and diver-caught species during the reporting period. (31pp.)
    Keywords: Management ; Fisheries ; white croaker ; Genyonemus lineatus ; Pacific mackerel ; Scomber japonicus ; rock scallop ; Hinnites multirugosus
    Repository Name: AquaDocs
    Type: monograph
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  • 19
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 18, October to December 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/347 | 8 | 2011-09-29 22:12:50 | 347 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in October to December 1983, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (133pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
    Type: monograph
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  • 20
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 9, July to September 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/351 | 8 | 2011-09-29 22:11:24 | 351 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in July to September 1981, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area,length-frequency histograms and tables are presented for select species. (149pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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