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  • 1
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    Pelagic shark/swordfish drift gill net fishery: management information document (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/242 | 8 | 2020-08-24 03:42:30 | 242 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: In 1977 a new fishery began to develop off the coast ofsouthern California. Long gill nets, drifted near the surface in the deep offshore waters, were being used successfully in landing pelagic sharks, primarily threshers. Recent increases in the retail demand for fish had led wholesale buyers to look for new sources of fish protein. Shark meat looked promising to many buyers. Aided by the public's rekindled fascination for sharks, the timing seemed favorable for introducing sharks as food. Word spread that wholesalers were willing to pay a good price for sharks. This created what appeared to many commercial fishermen to be the beginning of a bonanza.The new shark fishery grew rapidly. The number of vesselsengaged in offshore drift gill net operations grew from about 15 in 1977 to approximately 230 by 1984.Fishery biologists have expressed concern over the rapidexpansion of the commercial shark fleet. Historically, sharkfisheries have tended to decline after their initial success, due principally to slow growth and reproductive rates which seem to characterize sharks as a group. Perhaps the new thresher shark fishery might also be subject to a similar decline.Biologists were not the only ones who looked on the newindustry with concern. Among sport fishermen and conservation groups, rumors of marlin, whales, and seals taken by the hundreds became commonplace.Concern spread among the traditional swordfish harpoonfleet that landings by drift gill nets might glut the swordfish markets, driving prices down to the point that harpooners could no longer compete. Some harpooners voiced fears that drift gill nets might even overfish the swordfish stocks, causing serious declines in the availability of fish.Some conservation groups sought to ban the use of all gillnets, feeling that gill nets are inherently indiscriminant in what they catch and that the benefits derived from their use is always over-shadowed by the waste of marine life resulting from their use.In September of 1980, the Legislature enacted Assembly Bill2564 (Kapiloff), which directed the Department of Fish and Game to conduct a study of the drift gill net shark fishery. The purpose of the study was to determine what impact the use of drift gill nets might have on existing fisheries or upon other members of the local marine community such as whales, dolphins, and seals. The final report of that study "Pelagic Shark/Swordfish Drift Gill Net Fishery Management Information Document" was sent to the California Legislature in January 1983.In September 1982, the Legislature enacted Senate Bill 1573(Beverly), directing the Department of Fish and Game to continue monitoring the drift gill net fishery. It also directed, that a further study be conducted on the status of the thresher shark and swordfish resources off California and on the effects of the fishery on other resources. A report on this study would be prepared and delivered to the Legislature on or before January 1, 1985. The study was conducted. This is the report on that work. (77pp.)
    Keywords: Management ; Fisheries ; Biology
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  • 2
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    Status of the spawning biomass of the Pacific sardine, 1981-82 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/288 | 8 | 2010-12-14 15:34:09 | 288 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: State law requires that the population of Pacificsardines, Sardinops sagax caeruleus, must reach aminimum spawning biomass of 20,000 short tons beforeinitiation of a fishery. Data from ichthyoplanktonsurveys, the anchovy live bait fishery, sea surveycruises, the mackerel purse seine fishery, and a brownpelican food study are discussed concerning evidenceof an increase in population size. The spawningbiomass of the northern stock of sardines appears tobe remaining well below 20,000 tons. (9pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific sardines ; Sardinops sagax caeruleus
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  • 3
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    Status of the spawning biomass of the Pacific sardine, 1982-83 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/286 | 8 | 2010-12-14 15:34:03 | 286 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: State law provides for the initiation of a fishery forPacific sardines, Sardinops sagax caeruleus, when thespawning biomass of sardines reaches 20,000 short tons.Data from ichthyoplankton surveys, sea survey cruises,the mackerel fishery sampling program, and the live baitmonitoring program are discussed with regard to an increasein population size. It appears that the spawningbiomass of the northern stock of Pacific sardines remainsbelow 20,000 tons. (7pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific sardines ; Sardinops sagax caeruleus
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  • 4
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    Status of the spawning biomass of the Pacific sardine, 1983-84 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/321 | 8 | 2011-09-29 22:14:42 | 321 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: State law provides for the initiation of a fishery for Pacific sardines, Sardinops sagax caeruleus, when the spawning biomass of sardines reaches 20,000 short tons. Data from ichthyoplankton surveys, sea survey cruises, the mackerel fishery sampling program, and the live-bait fishery monitoring program are discussed with regard to an increase in population size. It appears that the spawning biomass of the northern stock of Pacific sardines remains below 20,000 tons. Legislation passed in 1983 which affects the incidental take and commercial use of sardines is also discussed. (9pp.)
    Keywords: Management ; Fisheries ; Pacific sardine ; Sardinops sagax caeruleus
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  • 5
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    Status of the spawning biomass of the Pacific sardine, 1984-85 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/325 | 8 | 2011-09-29 22:15:06 | 325 | California Department of Fish and Game
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    Publication Date: 2021-06-28
    Description: State law provides for the initiation of a 1000-ton fishery for Pacific sardines, Sardinops sagax, when the spawning biomass of sardines reaches 20 000 short tons.Data from ichthyoplankton surveys, an aerial spotter index, sea survey cruises, the mackerel fishery, and the live bait fishery are discussed as indicators of the relative abundance of sardines compared to previous years. It appears the spawning biomass of the northern subpopulation of Pacific sardine remains below 20 000 tons. A proposedsurvey plan is described for determining the relative magnitude of the sardine spawning biomass on an annual basis. Legislation is discussed which was passed in 1984 and pertains to the sardine resource. (23pp.)
    Keywords: Management ; Fisheries ; Pacific sardines ; Sardinops sagax
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  • 6
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    Mendocino Power Plant site ecological study annual report; July 1, 1971 to December 31, 1972 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/290 | 8 | 2011-09-29 22:17:20 | 290 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: This report is the first annual report submitted in partialfulfillment of Research Contract No. S-1902 between the Department of Fish and Game and the Pacific Gas and Electric Company. Through this contract the Department of Fish and Game is to conduct a preoperational ecological study to establish a base line inventory of the marine biota with special reference to fish and to abalone,including food chains.This first annual report covers all work from September 1971 through December 1972.This annual report covers the first 18 month period of the project from July 1, 1971 through December 31, 1972. The report includes results (discussion and tables) of our subtidal, intertidal, sportfishery, fish collection, fish food habit, and plankton studies. The quarterly reportfor October 1 to December 31, 1972 is included herein and these data are incorporated in this annual report. (86pp.)
    Keywords: Ecology ; Fisheries ; Biology ; Mendocino Power Plant ; California ; environmental impact
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  • 7
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    Cruise Report 71-KB-10: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/567 | 8 | 2011-09-29 21:53:45 | 567 | California Department of Fish and Game
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    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Pacific bonito ; Sarda chiliensis ; Pacific mackerel ; Scomber japonicus ; California
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  • 8
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    Cruise Report 71-KB-5: Pelagic Fish Program (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/562 | 8 | 2011-09-29 21:53:22 | 562 | California Department of Fish and Game
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    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; San Pedro Bay ; sardine ; Engraulis spp. ; spawning
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  • 9
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    Cruise Report 72-KB-7: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/584 | 8 | 2011-09-29 21:50:24 | 584 | California Department of Fish and Game
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    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Redondo Beach ; California ; Pacific bonito ; Sarda chiliensis
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  • 10
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    Cruise report 73-KB-1: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/609 | 8 | 2011-09-29 21:48:57 | 609 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: Document has 1 page.
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Southern California ; Pacific bonito ; Sarda chiliensis ; white seabass ; Cynoscion nobilis ; California barracuda ; Sphyraena argentea ; Jack mackerel ; Trachurus symmetricus ; Pacific mackerel ; Scomber japonicus
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  • 11
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    Cruise Report 71-KB-19: Jack mackerel tagging program (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/575 | 8 | 2011-09-29 21:54:26 | 575 | California Department of Fish and Game
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    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Southern California ; jack mackerel ; Trachurus symmetricus ; Pacific mackerel ; Scomber japonicus ; cruise report
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  • 12
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    Cruise Report 72-KB-31: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/607 | 8 | 2011-09-29 21:48:50 | 607 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: Document has 3 pages.
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; California ; Pacific bonito ; Sarda chiliensis ; California barracuda ; Sphyraena argentea ; white seabass ; Cynoscion nobilis ; Jack mackerel ; Trachurus symmetricus
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  • 13
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    Cruise Report 73-KB-33: Abalone-Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/636 | 8 | 2011-09-29 21:46:10 | 636 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: 2pp.
    Description: 2 pp.
    Keywords: Fisheries ; Biology ; Green abalone ; Haliotis fulgens ; Spiny lobster ; Panuliris interruptus ; Santa Catalina Island ; California
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  • 14
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    Cruise Report 73-KB-27: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/631 | 8 | 2011-09-29 21:46:15 | 631 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: Document has 1 page
    Description: 1 p.
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Pacific bonito ; Sarda chiliensis ; California barracuda ; Sphyraena argentea ; Pacific mackerel ; Scomber japonicus ; Jack mackerel ; Trachurus symmetricus
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  • 15
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    Cruise Report 74-KB-5: Abalone and Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/657 | 8 | 2011-09-29 21:43:49 | 657 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: Document has 8pp.
    Keywords: Ecology ; Management ; Fisheries ; Biology ; Anacapa Island ; Santa Cruz Island ; California ; Pink abalone ; Haliotis corrugata ; White abalone ; Haliotis sorenseni ; Spiny lobster ; Panulirus interruptus
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  • 16
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    The status of the northern Anchovy resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/661 | 8 | 2011-09-29 21:43:43 | 661 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: The northern anchovy, Engraulis mordax, has been thesubject of increasing exploitation during the last 60 years.Concentrated studies of its biology and population dynamicshas yielded population estimates of 5 to 8 million metrictons or about 5 to 10 times that existing during 1950-51.Continuing cooperative study programs between the State ofCalifornia, the Federal Government and the government ofMexico are recommended. (15pp.)
    Keywords: Management ; Fisheries ; Biology ; Northern anchovy ; Engraulis mordax
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  • 17
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    Status of the Jack Mackerel resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/667 | 8 | 2011-09-29 21:43:27 | 667 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: The jack mackerel, Trachurus symmetricus, resource off thewest coast of North America is known to be large and widelydistributed. The spawning biomass is estimated to be 2.1 to 4.8 million tons based upon abundance of jack mackerel eggs collected at sea. The distribution extends from the Gulf of Alaska to the Gulf of Tehuantepec, off the coast of southern Mexico, and as far as 1,500 miles seaward. Within this range lies an area of maximum density which extends from Point Conception to central Baja California.Jack mackerel biological data has not been processed veryrapidly due to higher priorities for analysis of sardine andPacific mackerel data, and the apparent healthy condition ofthis resource. The California Department of Fish and Gameinitiated several projects in 1972 to resolve unanswered biological questions. (14pp.)
    Keywords: Management ; Fisheries ; Biology ; Jack mackerel ; Trachurus symmetricus
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  • 18
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    The status of the Pacific mackerel resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/668 | 8 | 2011-09-29 21:43:29 | 668 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: Recent developments in management, biological knowledge,and history of the Pacific mackerel, Scomber japonicus, resource and its fishery in California and Mexico are reviewed. Currently the resource is extremely depleted, and commercial fishing has been curtailed. The 1970 year class was successful, and eventual rehabilitation of the fishery is anticipated. (15pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific mackerel ; Scomber japonicus
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  • 19
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    Mariculture in California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/673 | 8 | 2011-09-29 21:42:47 | 673 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: Mariculture in California is currently under developmentby several private concerns, universities, and by theCalifornia Department of Fish and Game. At present, mostof these efforts classify as research and development witha few in the pilot production phase.The Department of Fish and Game is presently conductingresearch in the culture of mortality resistant strains ofPacific oyster, Crassostrea virginica, the red abalone,Haliotis rufescens, and the spot prawn, Pandalus platyceros. (18pp.)
    Keywords: Management ; Fisheries ; Aquaculture ; Biology ; Mariculture ; California ; Pacific oyster ; Crassostrea virginica ; red abalone ; Haliotis rufescens ; spot prawn ; Pandalus platyceros
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  • 20
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    The status of the California yellowtail resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/671 | 8 | 2011-09-29 21:42:53 | 671 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: The California yellowtail, Seriola dorsalis, is a highlyfavored sport fish and a minor commercial species. Since1954 commercial landings have been limited by demand, and thesport catch has been about three times the number of fishcaught by commercial fishermen.Recreational fishing for yellowtail in southernCalifornia waters is almost entirely dependent on annualmigrants from central and northern Baja California. The resource is presently healthy but reduced catches off California could be the result of an expanded catch off Mexico. (19pp.)
    Keywords: Management ; Fisheries ; Biology ; California yellowtail ; Seriola dorsalis ; California
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  • 21
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    Average lunar monthly catch of sardines in California for the 1954-55 through 1961-62 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/679 | 8 | 2011-09-29 21:41:50 | 679 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: The catch per unit of effort of the sardine along thecoast of California has been published for the period 1932 to 1953. This paper continues the catch per unit of effort study through the 1961-62 season. Although the catch per unit of effort varied greatly during this later period, it never reached the high levels reported during the 1940's or decreased below the values reported for the disastrous seasons of 1952-53 and 1953-54. Mortalities and year class strengths are briefly discussed. (45pp.)
    Keywords: Fisheries ; Biology ; sardine ; California
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  • 22
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    California's Pacific bonito resource, its status and management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/704 | 8 | 2011-09-29 21:40:10 | 704 | California Department of Fish and Game
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    Publication Date: 2021-07-02
    Description: Pacific bonito, Sarda chiliensis, have become increasinglyimportant to California's sport and commercial fishermen sincethe early 1960's, but are now showing signs of decline. Recentinvestigations have revealed much about the bonito's lifehistory and population dynamics.These recent discoveries have been brought together into a document which will serve as a guide to future managementactions. Document has 44 pages.
    Keywords: Management ; Fisheries ; Biology ; California ; Pacific bonito ; Sarda chiliensis
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  • 23
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    The Southern California Jack Mackerel fishery and age composition of the catch for the 1947-48 through 1956-57 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/676 | 8 | 2011-09-29 21:42:22 | 676 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: The southern California commercial catch of jack mackerel experienced a tremendous expansion during the 1947-48 season. Landings ranged from a high of 158.7 million pounds landed during 1952-53 t o a low of 14.0 million pounds landed during 1954-55.The 1947 year class contributed 296,718 thousand fish and 167,997 thousand pounds. (49pp.)
    Keywords: Management ; Fisheries ; Biology ; Southern California ; Jack Mackerel ; Trachurus symmetricus
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  • 24
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    The Southern California jack mackerel fishery and age composition of the catch for the 1957-58 through 1961-62 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/677 | 8 | 2011-09-29 21:42:28 | 677 | California Department of Fish and Game
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    Publication Date: 2021-07-01
    Description: Approximately 29.7,25.9, 50.9, 64.6, and 102.9 millionpounds were landed for the 1957-58 through 1961-62 seasons.The 1957, 1958, 1959, and 1960 year classes each contributedover 100 million fish to the fishery over the fiveseasons. The 1958 year class also contributed 112 millionpounds landed. (27pp.)
    Keywords: Management ; Fisheries ; Biology ; Southern California ; jack mackerel ; Trachurus symmetricus
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  • 25
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    The Southern California jack mackerel fishery and age composition of the catch for the 1962-63 through 1966-67 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/681 | 8 | 2011-09-29 21:40:58 | 681 | California Department of Fish and Game
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    Publication Date: 2021-07-02
    Description: Commercial landings for the 1962-63 through 1966-67 seasons ranged from a high of 92.9 million pounds landed in 1962-63 to a low of 41.2 million pounds landed during 1966-67.The 1958 year class contributed 401,054,000 fish and127,207,000 pounds through the 9 seasons it was present inthe fishery. This was the largest number of fish contributedto the fishery by any year class since jack mackerel canningstarted in 1947. (30pp.)
    Keywords: Management ; Fisheries ; Biology ; southern California ; jack mackerel ; Trachurus symmetricus
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  • 26
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    An assessment of the accidental take of sea otters, Enhydra lutris, in gill and trammel nets (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/721 | 8 | 2011-09-29 21:39:12 | 721 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: The sea otter, Enhydra 1utris, is fully protected inCalifornia by both state and federal law. Despite thisprotection the population has not grown appreciably since atleast 1976. Research efforts directed at identifying thereasons for the lack of population growth have concentratedon sources of mortality and their contribution to totalmortality.The accidental drowning of sea otters in gill and trammelnets used to take California halibut, Para1ichthysca1ifornicus, was identified as a source of mortality whichhas probably increased as the sea otter population expandedinto areas of intense fishing. As a result, an existinggill and trammel net fishery observation program in MontereyBay was expanded to assess the extent and significance ofthe accidental drownings of sea otters in the areas nearMorro Bay and Port San Luis.Three different estimates of the number of sea ottersdrowned annually in gill and trammel nets were generatedusing comparable data bases. The average of these estimateswas approximately 80 sea otters per year for the level offishing effort expended during the June 1982 through June1984 study period.Back calculations of the annual take of sea otters by thegill and trammel net fishery for California halibut weremade for each year from 1973 through 1983. Thesecalculations suggest that the level of accidental take ofsea otters during the last decade may have been high enoughto be a significant factor in the lack of sea otterpopulation growth. (31pp.)
    Keywords: Fisheries ; Biology ; Sea otter ; Enhydra lutris ; California ; gill net ; trammel net
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    A review of the San Diego Bay striped mullet, Mugil Cephalus, fishery (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/723 | 8 | 2011-09-29 21:38:15 | 723 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: San Diego Bay was reopened to commercial gill net fishingfor striped mullet, Mugil cephalus, in that portion of thebay south of the San Diego - Coronado bridge in 1977 via anexperimental gear permit issued by the Fish and GameCommission. In 1985, legislation was passed allowing up tofive permits each annual season to fish for striped mulletin south San Diego Bay. Annual landings ranged from 18,700to 46,800 pounds from 1980 through 1986. (17pp.)
    Keywords: Management ; Fisheries ; San Diego Bay ; California ; Striped mullet ; Mugil cephalus
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  • 28
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    The speckled scallop, Argopecten circularis, in Aqua Hedionda Lagoon, San Diego County, California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/724 | 8 | 2011-09-29 21:38:24 | 724 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Speckled scallops, Argopecten circularis (Sowerby, 1835), were sampled at Agua Hedionda Lagoon, Carlsbad, San Diego County from March 1984 to October 1986, to obtain basic life history data. Monthly samples of scallops were collected, measured, and released to obtain length frequency data for estimates of growth, life span, and spawning period. Subsamples of scallops were collected for determination of gonadal-somatic and adductor muscle-somatic indices.In 1984 large concentrations of speckled scallops were found on the sand-silt bottom of the lagoon, closely associated with eelgrass, Zostra marina. During the course of the study the numbers of scallops declined, until their virtual disappearance at the end of 1986. Monthly length frequency plots from 24,375 scallop measurements indicate that this is a rapidly growing species with a short life span. Gonadal- and adductor muscle-somatic indices from subsamples of 1,714 scallops indicate first spawning at age one and a relationship between temperature and spawning.Based on this study management recommendations are made for the speckled scallop. (39pp.)
    Keywords: Management ; Fisheries ; Biology ; speckled scallop ; Argopecten circularis ; Aqua Hedionda Lagoon ; San Diego ; California
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  • 29
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    The Northern Anchovy reduction fishery for the 1978-79 through 1981-82 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/717 | 8 | 2011-09-29 21:41:21 | 717 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Nearly 49,000 metric tons (MT) of anchovies were taken during the 1978-79 season, followed by 32,390 MT in 1979-80, 60,678 MT in 1980-81 and 45,150 MT in 1981-82. A total of 14,076 fish was sampled during the four seasons for age, length and sex. The fishery during the four seasons consisted mainly of young-of-the-year and age groups I and II fish. The 1978 and 1979 yr classes comprised the major share of the catch. Seasonal mean lengths varied from 112 mm standard length (SL) in the 1979-80 season to 122 mm SL for the 1981-82 season. Female to male sex ratios ranged from 1.17:l (1978-79 season) to 1.59:l (1979-80 season). (28pp.)
    Keywords: Management ; Fisheries ; Biology ; Northern anchovy ; Engraulis mordax ; California
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  • 30
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    Red abalone size data from Johnsons Lee, Santa Rosa Island, collected from 1978 to 1984 (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/720 | 8 | 2011-09-29 21:39:31 | 720 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Red abalone, Haliotis rufescens, were collected at Johnsons Lee, Santa Rosa Island, in the summers of 1978 through 1982, and in 1984, to obtain data for determining various fishery population parameters. Annual visits to the study site were made at yearly intervals to simplify growth calculations.During the first four visits, 2145 red abalones were tagged,measured, and replaced. Shell damage, soft tissue injuries, and causes of mortality were noted. The method of tagging isdescribed.Recovery of first tagged abalone after one year was approximately 30%. Analysis of variance of the annual samples indicated that the samples were, with one exception, not different. Summaries are presented of the number of abalone collected and tagged by year, frequencies of shell damage, soft tissue injury, predatory sponge infestation, and total mortality. Appendices include a listing of the raw size data and various codes for each tagged abalone. (56pp.)
    Keywords: Management ; Fisheries ; Biology ; Red abalone ; Haliotis rufescens ; Santa Roas Island ; California
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  • 31
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    The mortality rate of Engraulis mordax in Southern California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/772 | 8 | 2011-09-29 21:37:05 | 772 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: The annual mortality rate for the northern anchovy, Engraulismordax, is estimated to be 66.5% in southern California waters, although the mortality rate increases sharply for older fish. A method for evaluating recruitment regularity and age constancy of mortality is presented. (Document has 25 pages)
    Keywords: Fisheries ; Biology ; Engraulis mordax ; northern anchovy ; Southern California ; mortality
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  • 32
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    The status of the white seabass resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/756 | 8 | 2011-09-29 21:36:21 | 756 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: White seabass, Cynoscion nobilis, have been fished inCalifornia since late in the ninteenth century. At presentthe commercial fishery is stable, landing about 8 hundredthousand pounds per year, but the sport fishing has declinedto the poorest catch on record. (Document has 11 pages.)
    Keywords: Management ; Fisheries ; Biology ; White seabass ; Cynoscion nobilis ; California
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  • 33
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    The Southern California jack mackerel fishery and age, length and sex composition of the catch for the 1967-68 through 1971-72 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/757 | 8 | 2021-02-27 19:33:34 | 757 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Commercial landings for 5 seasons, 1967-68 through1971-72, approximated 36.5, 58.7, 36.8, 57.0 and 56.2million pounds respectively (16,600; 26,600; 16,700;25,900 and 25,500 Mg).The 1967 year class dominated the fishery during the 1967-68 and 1968-69 seasons. The 1970 year class, in the fishery only 2 years, contributed an estimated 250 million fish and 45 million pounds (20,400 Mg). (46pp.)
    Keywords: Fisheries ; Biology ; Southern California ; jack mackerel ; Trachurus symmetricus ; life history
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  • 34
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    Cruise Report 74-KB-15: Lobster investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/827 | 8 | 2011-09-29 21:30:48 | 827 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (1 page)
    Keywords: Fisheries ; Biology ; Santa Catalina Island ; California ; Spiny lobster ; Panulirus interruptus ; life history ; R/V Kelp Bass
    Repository Name: AquaDocs
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  • 35
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    Cruise Report 74-KB-18 and 74-M-4: Abalone-Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/830 | 8 | 2011-09-29 21:31:13 | 830 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (4pp.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; R/V Mollusk ; San Clemente Island ; California ; Pink abalone ; Haliotis corrugata
    Repository Name: AquaDocs
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  • 36
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    Cruise Report 74-KB-22: Abalone Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/834 | 8 | 2011-09-29 21:31:31 | 834 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (1 page)
    Keywords: Fisheries ; Biology ; Russian River ; Shelter Cove ; California ; R/V Kelp Bass ; red abalone ; Haliotis rufescens
    Repository Name: AquaDocs
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  • 37
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    Cruise Report 74-KB-25: Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/837 | 8 | 2011-09-29 21:31:49 | 837 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (1 page)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Santa Catalina Island ; California ; Spiny lobster ; Panulirus interruptus ; life history
    Repository Name: AquaDocs
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  • 38
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    Cruise Report 74-KB-30 and 74-M-6: Abalone - Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/842 | 8 | 2011-09-29 21:32:12 | 842 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (3pp.)
    Keywords: Management ; Fisheries ; Biology ; R/V Kelp Bass ; R/V Mollusk ; San Clemente Island ; Santa Catalina Island ; California ; green abalone ; Haliotis fulgens ; tag and recapture
    Repository Name: AquaDocs
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  • 39
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    Cruise Report 74-KB-31: Sportfish-Kelp Habitat Project (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/843 | 8 | 2011-09-29 21:32:17 | 843 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (2pp.)
    Keywords: Management ; Fisheries ; Biology ; R/V Kelp Bass ; Catalina Island ; Palos Verdes Peninsula ; California ; Giant kelp ; Macrocystis sp.
    Repository Name: AquaDocs
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  • 40
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    Cruise Report 74-KB-11 and 74-M-2: Abalone-Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/823 | 8 | 2011-09-29 21:32:34 | 823 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (4pp.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; R/V Mollusk ; San Miguel Island ; California ; Spiny lobster ; Panulirus interruptus ; red sea urchin ; Strongylocentrotus franciscanus ; purple sea urchin ; Strongylocentrotus purpuratus
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  • 41
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    Biological surveys of five southern artificial reefs: Oceanside #1, Oceanside #2, Carlsbad, Pacific Beach, and Mission Bay (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/1424 | 8 | 2011-09-29 20:36:16 | 1424 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-08
    Description: (Document pdf contains 19 pages)
    Keywords: Fisheries ; Biology ; artificial reefs
    Repository Name: AquaDocs
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  • 42
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    Cruise Report 70-S-8: Crab (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2038 | 8 | 2011-09-29 19:45:56 | 2038 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-11
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; Table Bluff ; Oregon border ; market crab ; Cancer magister ; tanner crabs ; Chionoecetes tanneri ; tag
    Repository Name: AquaDocs
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  • 43
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    Cruise Report 70-S-6: Sportfish Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2034 | 8 | 2011-09-29 19:47:14 | 2034 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-11
    Description: (PDF contains 2 pages.)
    Keywords: Fisheries ; Biology ; Baja California ; Mexico ; tag and release ; sand bass ; Paralabrax nebulifer ; Pacific bonito ; Sarda chiliensis ; California yellowtail ; Seriola dorsalis ; N.B.Scofield
    Repository Name: AquaDocs
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  • 44
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    Cruise Report 72-S-1: Big Game Fisheries Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2037 | 8 | 2011-09-29 19:45:54 | 2037 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-11
    Description: (PDF contains 5 pages.)
    Keywords: Fisheries ; Biology ; Baja California ; Mexico ; Los Coronados Islands ; Gorda Point ; tag and release ; Pacific bonito ; Sarda chiliensis ; Pacific mackerel ; Scomber japonicus ; jack mackerel ; Trachurus symmetricus
    Repository Name: AquaDocs
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  • 45
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    Cruise Report 71-S-3 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2042 | 8 | 2011-09-29 19:43:06 | 2042 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-11
    Description: (PDF contains 7 pages.)
    Keywords: Fisheries ; Biology ; southern Channel Islands ; Tanner Bank ; Cortez Bank ; southern California ; sablefish ; Anoplopoma fimbria ; Santa Rosa-Cortez Ridge ; N.B.Scofield
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  • 46
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    Cruise Report 71-S-6: Sportfish Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2044 | 8 | 2011-09-29 19:43:09 | 2044 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-11
    Description: (PDF contains 1 pages.)
    Keywords: Fisheries ; Biology ; Baja California ; sand bass ; Paralabrax nebulifer ; recapture ; tag ; N.B.Scofield
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  • 47
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    Cruise Report 71-S-2: Prawns (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2040 | 8 | 2011-09-29 19:46:24 | 2040 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-11
    Description: (PDF contains 4 pages.)
    Keywords: Fisheries ; Biology ; Usal ; Oregon border ; spot prawns ; Pandalus platyceros ; coonstripe shrimp ; Pandalus danae ; ocean shrimp ; Pandalus jordani ; N.B.Scofield
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  • 48
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    Cruise Report 71-S-8: Crab (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2046 | 8 | 2011-09-29 19:43:13 | 2046 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-11
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; False Cape ; Oregon border ; market crab ; Cancer magister ; ocean shrimp ; Pandalus jordani ; tag ; N.B. Scofield
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  • 49
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    Cruise Report 72-S-5: Inshore fisheries habitat evaluation and monitoring (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2180 | 8 | 2011-09-29 19:37:53 | 2180 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; Huntington Beach ; California ; trawling ; ridgeback prawns ; Eusicyonia ingentis ; urchins ; Allocentratus fragilis ; sea cucumbers ; Parastichopus sp. ; sea stars ; Astropectin verrilli
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  • 50
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    Cruise Report 72-S-4: Big Game Fish Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2179 | 8 | 2011-09-29 19:37:52 | 2179 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 2 pages.)
    Keywords: Fisheries ; Biology ; Baja California ; Magdalena Bay ; Guadalupe Island ; tag and release ; Pacific bonito ; Sarda chiliensis ; California yellowtail ; Seriola dorsalis ; California barracuda ; Sphyraena argentea ; white seabass ; Cynoscion nobilis ; Pacific mackerel ; Scomber japonicus ; Jack mackerel ; Trachurus symmetricus ; trolling
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  • 51
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    Cruise Report 72-S-6: Shellfish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2181 | 8 | 2011-09-29 19:37:55 | 2181 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; Trinidad ; California ; Cape Sebatian ; Oregon ; ocean shrimp ; Pandalus jordani ; Pacific hake ; Merluccius productus ; trawls
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  • 52
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    Cruise Report 72-S-8: Crab (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2184 | 8 | 2011-09-29 19:38:16 | 2184 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 4 pages.)
    Keywords: Fisheries ; Biology ; Eureka ; California ; Oregon border ; market crab ; Cancer magister ; trawling ; trapping ; ocean shrimp ; Pandalus jordani ; Dover sole
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  • 53
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    Cruise Report 72-S-9: Bottomfish (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2183 | 8 | 2011-09-29 19:38:14 | 2183 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 5 pages.)
    Keywords: Fisheries ; Biology ; Santa Cruz ; California ; Point Sur ; California ; demersal fishes ; life history ; rockfish
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  • 54
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    Cruise Report 72-S-7: Crab (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2182 | 8 | 2011-09-29 19:37:57 | 2182 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 5 pages.)
    Keywords: Fisheries ; Biology ; Point San Pedro ; California ; Bodega Head ; California ; market crab ; Cancer magister ; trawling
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  • 55
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    Pendleton Artificial Reef: annual progress report presented to Southern California Edison Company (2021)
    State of California, Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2197 | 8 | 2011-09-29 19:29:20 | 2197 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 82 pages.)
    Description: Nearshore Sportfish Habitat Enhancement Program
    Keywords: Management ; Ecology ; Fisheries ; Biology ; artificial reef ; marine algae ; marine invertebrates ; fish ; Southern California ; Nearshore Sportfish Habitat Enhance~cnt Program
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  • 56
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    Southern California marine sport fishing: private-boat catch and effort during 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/314 | 8 | 2011-09-29 22:14:03 | 314 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: An extensive study of fishing activity stemming from privately-owned boats was conducted during 1981 in order to determine the magnitude and impact of this segment of southern California's marine sport fishery. Anglers and divers returning from fishing trips were interviewed at launch ramps, boat hoists, and boat-rental facilities from Pt. Conception to the Mexican border. Information on fishing catch and effort was used to calculate statistical estimatesof total catch, total effort, catch of preferred sportfish species, and compliance rates for legal minimumsize limits.An estimated 1,013,000 organisms were landed during355,000 fishing trips. The major components of thisyear's catch were 1) Pacific mackerel, Scomber japonicus, 231,000 landed; 2) Pacific bonito, Sarda chiliensis, 157,000 landed; 3) white croaker, Genyonemus lineatus, 148,000 landed; and 4) rockfish, Sebastes spp., 142,000 landed. These fishes contributed two-thirds of the total catch.This year anglers were favored by mild weather andthe summertime appearance of migratory game fishes,resulting in higher than usual effort levels andabove average catch rates for favored game species. (81pp.)
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; Pacific bonito ; Sarda chiliensis ; white croaker ; Genyonemus lineatus ; rockfish ; Sebastes spp.
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  • 57
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    Artificial reef plan for sport fish enhancement (2021)
    California Department of Fish and Game, Marine Resources Division | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/357 | 8 | 2011-09-29 22:09:59 | 357 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Hard bottom substrate provides habitat for a multitude of marine fishes, invertebrates, and plants - particularly giant kelp - which are of direct and indirect importance to sport and commercial fisheries. These reefs also enhanceesthetic uses of the marine environment. This document sets forth the plan of the California Department of Fish and Game (CDFG) for the construction of artificial reefs.The plan includes an outline for defining the purpose of reef construction, gathering information pertinent to reef placement and design, selecting a reef site, preparing a project narrative, obtaining permits and approvals for reef construction, developing a general permit for reef construction, and establishing a system of fisheries habitat enhancement areas. Procedures for constructing and mappingreefs are discussed and an outline for conducting short- and long-term biological studies of reef communities is presented.Since 1958, CDFG has constructed 31 reefs off southern California. Thirteen of the largest and most frequently used reefs were mapped using hydroacoustic and radio-locating techniques. Maps of these reefs were published in a 1989 CDFG booklet entitled "A Guide to the Artificial Reefs of Southern California".Since 1978, seven developmental reefs have been constructed: 1) Pendleton Artificial Reef (1980) - San Diego County; 2) Pitas Point Artificial Reef (1984) Ventura County; 3) Marina Del Rey Artificial Reef (1985) - Los Angeles County; 4)Oceanside Artificial Reef (1987) - San Diego County; 5) Pacific Beach Artificial Reef (1987) - San Diego County; 6) Santa Monica Artificial Reef (1987) - LosAngeles County; and 7) Topanga Artificial Reef (1987) - Los Angeles County. These reefs were built to improve habitat for sport fishes and associated fauna and to evaluate the enhancement characteristics of reefs related to geographiclocation, depth, height, rock size, and reef spacing.Short-term studies revealed that all reefs have provided shelter, food, nesting, and nursery areas for important fish species and have increased sport fishing opportunities. Furthermore, giant kelp has been observed on all reefs built at suitable depths. More extensive long-term studies are planned in 1998 when reef communities will be at successional equilibrium. These studies will provideadditional information concerning the long-term potential of artificial reefs as habitat for sport fish, invertebrates, and plants.The plan discusses different types of man-made reefs, including developmental, production, and fishing access reefs, and provides examples of each. It documentsCDFG policy regarding the use of reefs as mitigation for impacts on rocky habitat and kelp. It also documents the laws authorizing CDFG to administer reef construction and studies in California. The activities involved in designing,permitting, constructing, and evaluating Pendleton Artificial Reef are provided as an example of the reef building and study process.A list of reefs is provided to document the location, depth, area, materials, and funding sources for all reefs constructed and/or augmented in California. (85pp.)
    Keywords: Fisheries ; Biology ; kelp
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  • 58
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    Southern California marine sport fishing: Private boat anglers' catch and effort in Los Angeles County, October-December, 1980 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/15 | 8 | 2011-09-29 22:41:18 | 15 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The catch landed and effort expended by private-boatsport fishermen was studied in Los Angeles Countybetween October and December 1980, in order todetermine the impact of one segment of the sportfishery on local marine resources. Fishermenreturning from fishing trips were interviewed atlaunch ramps, hoists, and boat rental facilities.This report contains quantitative data and statisticalestimates of total effort, total catch, catch ofpreferred species, and length frequencies for thosespecies whose catches are regulated by minimum sizelimits.An estimated 94,000 organisms were landed by 22,000anglers and 1,200 divers. The major components of thecatch were Pacific mackerel, Scomber japonicus, 29,000landed; white croaker, Genyonemus lineatus, 17,500landed; and Pacific bonito, Sarda chiliensis, 11,500landed. These three species comprised two-thirds ofthe total catch.Anglers' compliance with size limit regulations wasvariable. Nearly 80% of all measured bass, Paralabraxspp., were legal size, but only 50% of the Californiahalibut, Paralichthys californicus, were legal size.Divers showed much better compliance with the sizelimit regulations: 96% of all California spinylobsters, Panulirus interruptus, were legal size. (14pp.)
    Keywords: Management ; Fisheries ; marine species ; recreational fishing ; fish size ; anglers ; divers
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  • 59
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    Status of the spawning biomass of the Pacific sardine, 1980-81 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/14 | 8 | 2011-09-29 22:41:09 | 14 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: State law requires that the population of Pacific sardines,Sardinops sagax caeruleus, must reach a minimum spawningbiomass of 20,000 short tons before initiation of a fishery.Data from ichthyoplankton surveys, the anchovy live baitfishery, sea survey cruises, and the mackerel purse seinefishery are analyzed for evidence of an increase inpopulation size. Presently, the spawning biomass of thenorthern stock of sardines remains far below 20,000 tons. (9pp.)
    Keywords: Fisheries ; Biology ; Pacific sardines ; Sardinops sagax caeruleus ; fisheries
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  • 60
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    Fish and bivalves at Bolsa Chica Marsh re-establishment project: Progress report II (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/11 | 8 | 2011-09-29 22:40:57 | 11 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The objectives of our fish and bivalve study are:1. Determine changes in the number of species of fishand bivalves before Phase I and during Phase I atBolsa Chica Marsh.2. Determine if California Department of Fish and Game'spredicted benefits in Phase I were achieved by increasesin fish species.3. Determine influences of water management practicesupon fish and bivalve composition.Nine species of fish and three species of bivalves werecollected above the tide gates. Goldfish, Carassius auratus;shiner surfperch, Cymatogaster aggregata; queenfish, Seriphus politus; and California jackknife clam, Tagelus californianus have not been reported previously from above the tide gates. Five species of fish and four species of bivalves were collected below the tide gates. Striped bass, Roccus saxatilis; and cheekspot goby, Ilypnus gilberti have not been reported previously from below the tide gates. (8pp.)
    Keywords: Ecology ; Fisheries ; Biology ; Bolsa Chica Marsh ; fish ; bivalves ; California
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  • 61
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    Fish and bivalves at Bolsa Chica Marsh re-establishment project; Progress report III (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/13 | 8 | 2011-09-29 22:41:07 | 13 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The objectives of our fish and bivalve study are:1. Determine changes in the number of species of fishand bivalves before Phase I and during Phase 1 atBolsa Chica Marsh.2. Determine if California Department of Fish and Game'spredicted benefits in Phase I were achieved by increasesin fish species.3. Determine influences of water management practicesupon fish and bivalve composition.Thirteen species of fish and five species of bivalveswere collected from Inner Bolsa Bay and South Bolsa Slough.Deepbody anchovy, Anchoa compressa; jacksmelt, Atherinopsiscaliforniensis; longjaw mudsucker, Gillichthys mirabilis;specklefin midshipman, Porichthys myriaster; round stingray,Urolophus halleri; banded chione, Chione californiensis;bentnose clam, Macoma nasuta; and common littleneck clam,Protothaca staminea have not been reported previously fromInner Bolsa Bay. Nine species of fish and four species ofbivalves were collected from outer Bolsa Bay. Yellowfin goby, Acanthogobius flavimanus; longjaw mudsucker; tilapia, Tilapia mossambica; and bay pipefish, Syngnathus leptorhynchus have not been reported previously from Outer Bolsa Bay. (11pp.)
    Keywords: Ecology ; Fisheries ; Biology ; Bolsa Chica Marsh ; fish ; bivalves
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  • 62
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    An evaluation of the California barracuda resource and its management (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/17 | 8 | 2011-09-29 22:41:25 | 17 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Despite efforts to manage it, the California barracuda,Sphyraena argentea, resource has exhibited a marked declinein abundance from levels exhibited prior to 1950. This paperpresents a history of the California barracuda fisheries, asummary of its life history and population dynamics; and anevaluation of the resource under current management practices and recommendations for improvements in current management.Evaluation of the current status of the resource indicatesits abundance off southern California is low but slowlyimproving with a marked improvement in size composition.Management recommendations, when adopted, should help increase the rate of recovery of the California barracuda resource. (73pp.)
    Keywords: Management ; Fisheries ; Biology ; California barracuda ; Sphyraena argentea ; fisheries ; California
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  • 63
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    Southern California partyboat angler survey (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/16 | 8 | 2011-09-29 22:41:21 | 16 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Previous studies suggest that ocean anglers are unableto identify many common marine fishes and that they frequently use nondesignated common names for those fisheswith which they are familiar.This paper discusses the ability of the anglers andcrew aboard commercial passenger fishing vessels (CPFV) toidentify 22 fishes caught off southern California and relates this ability to fishing experience and frequency. Implications to resource management are also discussed.Most CPFV anglers were inexperienced and could identifyonly a few of the species. However, as experience increased,the scores improved. Vessel crew members scored higher thanthe most experienced anglers.The inability of anglers to identify marine fishes andthe widespread use of nondesignated and often confusingcommon names help to explain why some fishery managementregulations of the California Department of Fish and Gameare relatively ineffective. (37pp.)
    Keywords: Fisheries ; Biology ; Fish identification ; anglers ; recreational fishing
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  • 64
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    Southern California independent sport fishing survey Quarterly Report for January-March, 1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/19 | 8 | 2011-09-29 22:41:33 | 19 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statisticalestimates of effort, total catch, catch of preferredsport fish species, and length frequencies of selectedspecies landed by private-boat sport fishermen.An estimated 55,000 anglers and 3,300 divers landed 182,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) rockfishes, Sebastes spp., 73,000landed; 2) white croaker, Genyonemus lineatus, 28,000landed; 3) bass, Paralabrax spp., 15,000 landed; and4) Pacific bonito, Sarda chiliensis, 12,000 landed. (22pp.)
    Keywords: Management ; Fisheries
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  • 65
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    Southern California independent sport fishing survey Quarterly Report for April-June, 1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/18 | 8 | 2011-09-29 22:41:28 | 18 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statistical estimatesof effort, total catch, catch of preferred sport fishspecies, and length frequencies of selected specieslanded by private-boat sport fishermen.An estimated 102,000 anglers and 3,700 divers landed 275,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) white croaker, Genyonemus lineatus,85,000 landed; 2) bass, Paralabrax spp., 48,000 landed; and3) Pacific bonito, Sarda chiliensis, 42,000 landed. (22pp.)
    Keywords: Management ; Fisheries
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  • 66
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    Southern California private-boat sport fishermen: how familiar are they with the sport fishing regulations? (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/10 | 8 | 2011-09-29 22:40:55 | 10 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Anglers frequently violate sport fishing regulations out ofignorance, by mistake, or by deliberate action. To determinewhether unfamiliarity with the regulations plays a major part in this problem, we asked anglers on privately-owned,trailerable boats at launch ramps and boat hoists a series of questions which tested their knowledge of the regulations.We found that on any winter weekend about 30% of the anglerson private-boats knew none of the size limits, 50% knew atleast three of the six size limits, and 4% knew all of thesize limits. Only about 25% of the anglers kept a copy ofthe regulations on their boats for reference when fishing.The results of the survey indicate that greater effort mustbe expended to familiarize sport fishermen with the fishingregulations. (9pp.)
    Keywords: Management ; Fisheries ; recreational fishing ; fish size ; anglers ; regulations
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  • 67
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    Southern California independent sport fishing survey Quarterly Report for July-September, 1975 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/20 | 8 | 2011-09-29 22:41:36 | 20 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statisticalestimates of effort, total catch, catch of preferredsport fish species, and length frequencies of selectedspecies landed by private-boat sport fishermen.An estimated 107,000 anglers and 5,300 divers landed 307,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) white croaker, Genyonemus lineatus,87,000 landed; 2) bass, Paralabrax spp., 30,000 landed; and3) Pacific mackerel, Scomber japonicus, 21,000 landed. (24pp.)
    Keywords: Management ; Fisheries
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  • 68
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    Status of the spawning biomass of the Pacific sardine, 1978-79 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/22 | 8 | 2011-09-29 22:41:59 | 22 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: State law requires that the population of Pacificsardines, Sardinops sagax caeruleus, must reach aminimum spawning biomass of 20,O0O short tons beforeinitiation of a fishery. Data from ichthyoplanktonsurveys, the anchovy live bait fishery, sea surveycruises, and the jack mackerel purse seine fisheryare analyzed for evidence of an increase inpopulation size. Presently, the spawning biomassof the northern stock of sardines remains far below20,000 tons. (9pp.)
    Keywords: Fisheries ; Biology
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  • 69
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    Southern California independent sport fishing survey Quarterly Report no. 10 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/45 | 8 | 2021-02-27 19:34:29 | 45 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the October 1 - December 31, 1977 quarter, 28launch ramps, hoists, and boat rental locations weresampled a total of 294 times. During the sample days11,942 anglers and 1,025 divers were interviewed.They expended 83,882 effort-hours and landed 36,741fishes and other organisms of 163 identified species.The ten most commonly landed species were 1) Pacificmackerel, Scomber japonicus, 16%; 2) white croaker,Genyonemus lineatus, 16%; 3) olive rockfish, Sebastesserranoides, 6%; 4) blue rockfish, S. mystinus, 4%;5) halfmoon, Medialuna californiensis, 4%; 6) Pacificbonito, Sarda chiliensis, 3%; 7) rock scallop,Hinnites multirugosus, 2%; 8) chilipepper, Sebastesgoodei, 2%; 9) greenspotted rockfish, S. chlorostictus,2%; and 10) kelp bass, Paralabrax clathratus, 2%. (25pp.)
    Keywords: Management ; Fisheries ; Biology
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  • 70
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    Southern California commercial passenger fishing vessel sampling study Quarterly Report no. 14; October 1 - December 31, 1978 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/47 | 8 | 2011-09-29 22:38:45 | 47 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between October 1 and December 31, 1978, Departmental personnel sampled catches during 132 trips aboard commercial passenger fishing vessels (partyboats) operating in southern California. A total of 25,571 fishes belonging to 87 species were identified and measured.In addition, six long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 1,225 fishes comprising 20 species was identified and measured at dockside from these vessels.The 10 most commonly taken species during the quarter accounted for 76.3% of the southern California catch. The most frequently sampled species were bocaccio, Sebastes paucispinis (24.7%); Pacific mackerel, Scomber japonicus (15.8%); chilipepper, Sebastes goodei (8.7%); kelp bass, Paralabrax clathratus (7.4%); Pacific bonito, Sarda chiliensis (5.7%); olive rockfish, Sebastes serranoides (4.1%); blue rockfish, S. mystinus (4.0%); squarespot rockfish, S. hopkinsi (2.1%); greenspotted rockfish, S. chlorostictus (2.l%); and vermilion rockfish, S. miniatus (1.9%). Samples gathered from long-range trips showed thetop five species accounted for 90.4% of the fishes sampled. The most frequently sampled species were yellowtail, Seriola lalandi (28.8%); yellowfin tuna, Thunnus albacares (20.7%); wahoo, Acanthocybiumsolanderi (16.2%); snowy grouper, Epinephelus niveatus (12.4%); and dolphinfish, Coryphaena hippurus (12.3%).December marked the final month in which partyboats were sampled off southern California. (69pp.)
    Keywords: Management ; Fisheries
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  • 71
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    Southern California independent sport fishing survey annual report no. 2 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/48 | 8 | 2011-09-29 22:38:50 | 48 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: For the second consecutive year, a program of randomfield sampling of anglers and divers fishing fromprivately owned boats was conducted at southernCalifornia launch ramps, hoists, and boat rentalfacilities. This study presents quantitative dataand statistical estimates of effort, total catch,catch of preferred sport fish species, and lengthfrequencies of particular species landed by privateboat sport fishermen. An assessment of sportfishermen's compliance with current fishingregulations is also included.Catch composition and effort levels variedconsiderably among the five counties sampled,reflecting differences in water temperature,offshore habitat, and preferences for particularspecies by local fishermen. A comparison of thisyear's results with those of last year showed thatalthough catch rates for some species were similarboth years, others diverged considerably. (84pp.)
    Keywords: Management ; Fisheries
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  • 72
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    Southern California independent sport fishing survey annual report no. 3 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/54 | 8 | 2011-09-29 22:39:23 | 54 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: For the third consecutive year a program of random fieldsampling of anglers and divers fishing from privatelyowned boats was conducted at southern California launchramps, hoists, and boat rental facilities. This studypresents quantitative data and statistical estimates ofeffort, total catch, catch of preferred sport fishspecies, and length frequencies of particular specieslanded by private boat sport fishermen. An assessment ofsport fishermen's compliance with current fishingregulations is included along with an estimate of thenumber of anglers who returned empty-handed.Catch composition and effort levels varied considerablyamong the five counties sampled, reflecting differencesin water temperature, offshore habitat, and preferencesfor particular species by local fishermen. A comparisonof this year's results with those of last year showedthat angler effort dropped 16% and angler catch dropped15%, while diver effort and catch dropped 18% and 9%respectively. This reduction is attributed to the recordamounts of rainfall in southern California which severelycurtailed fishing activity during four months of the year. (105pp.)
    Keywords: Management ; Fisheries
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  • 73
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    Southern California independent sport fishing survey Quarterly Report for October-December, 1975 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/52 | 8 | 2011-09-29 22:39:18 | 52 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statisticalestimates of effort, total catch, catch of preferredsport fish species, and length frequencies of selectedspecies landed by private-boat sport fishermen.An estimated 52,000 anglers and 4,300 divers landed179,000 fishes, molluscs, and crustaceans. The majorcomponents of the catch were 1) rockfishes, Sebastes spp.,68,000 landed; 2) white croaker, Genyonemus lineatus,38,000 landed; and 3) bass, Paralabrax spp., 13,000landed. (21pp.)
    Keywords: Management ; Fisheries
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  • 74
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    Southern California independent sport fishing survey Quarterly Report no. 12 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/55 | 8 | 2011-09-29 22:39:37 | 55 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the April 1 - June 30, 1978 quarter, 29 launchramps, hoists, and boat rental locations weresampled a total of 307 times. During the sample days15,220 anglers and 685 divers were interviewed. Theyexpended 107,738 effort-hours and landed 38,132 fishesand other organisms of 146 identified species.The ten most commonly landed species were 1) whitecroaker, Genyonemus lineatus, 30%; 2) Pacific mackerel,Scomber japonicus, 11%; 3) kelp bass, Paralabraxclathratus, 9%; 4) barred sand bass, P. nebulifer, 4%;5) blue rockfish, Sebastes mystinus, 2%; 6) bocaccio,S. paucispinis, 2%; 7) olive rockfish, S. serranoides,2%; 8) brown rockfish, S. auriculatus, 2%; 9) Pacificsanddab, Citharichthys sordidus, 2%; and 10) blacksurfperch, Embiotoca jacksoni, 2%. (26pp.)
    Keywords: Management ; Fisheries
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  • 75
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    Status of the spawning biomass of the Pacific sardine, 1977-78 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/58 | 8 | 2011-09-29 13:04:36 | 58 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: State law requires that the population ofPacific sardines, Sardinops sajax caeruleus,must reach a minimum spawning biomass of20,000 short tons before initiation of afishery. Data from ichthyoplankton surveys,sea survey cruises, the anchovy bait fishery,and jack mackerel purse seine fishery areanalyzed for evidence of an increase inpopulation size. Presently, the spawningbiomass of the northern stock of sardines isfar below the minimum requirement. (8pp.)
    Keywords: Fisheries ; Biology ; Pacific sardines ; Sardinops sajax caeruleus
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  • 76
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    Southern California partyboat sampling study Quarterly Report no. 11 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/56 | 8 | 2011-09-29 22:39:39 | 56 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: From January 1 through March 31, 1978, Departmentalpersonnel sampled catches from 141 trips while aboard commercial passenger fishing vessels operating in southern California. A total of 25,339 fishes belonging to 88 species were identified and measured. Otoliths for age determination studies were removed from 247 rockfish carcasses representing 22 species. Additionally, nine long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 1,518 fishes representing 24 species was identified and measured at dockside from these vessels. The 10 most commonly taken species during the quarteraccounted for 68.1% of the southern California catch.The most frequently sampled species of bocaccio, Sebastespaucispinis (21.1%); chilipepper, S. goodei (16.5%); Pacific mackerel, Scomber japonicus (8.7%); blue rockfish, Sebastes mystinus (6.0%); kelp bass, Paralabrax clathratus ( 5.2%); vermilion rockfish, S. miniatus (3.7%); squarespot rockfish, S. hopkinsi (3.2%); greenspotted rockfish, S. chlorostictus (2.9%); olive rockfish, S. serranoides (2.8%); and whitecroaker, Genyonemus lineatus (2.6%). Samples gathered fromlong-range trips showed the top five species accounted for83.8% of the fish sampled. The most frequently sampled species were wahoo, Acanthocybium solanderi (28.6%);yellowfin tuna, Thunnus albacares (23.7%); yellowtail, Seriola dorsalis (18.6%); leopard grouper, Mycteroperca rosacea (6.2%); and gulf grouper, M. jordani (3.8%). (55pp.)
    Keywords: Management ; Fisheries
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  • 77
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    Status of Pacific mackerel spawning population, 1975 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/61 | 8 | 2011-09-29 22:38:37 | 61 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Three methods were used to determine the Pacific mackerelpopulation. The tag and recovery method estimated thepopulation at 620 short tons. The other two estimateswere based on regression techniques of partyboat catchesand these results yielded 2,921 tons and 1,385 tons,respectively. All three estimates were below the 10,000tons prescribed for a fishery and thus no harvest couldbe allowed. (14pp.)
    Keywords: Fisheries ; Biology ; Scomber japonicus ; Pacific mackerel ; population estimates
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  • 78
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    Southern California marine sport fishing: private-boat catch and effort, 1975-1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/53 | 8 | 2011-09-29 22:39:20 | 53 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The catch landed and effort expended by private-boatsport fishermen were studied from July, 1975 throughJune, 1976, in order to determine the magnitude andimpact of one segment of the marine sport fishery insouthern California. Fishermen returning from afishing trip were interviewed at launch ramps, boathoists, and boat rental locations from Pt. Conceptionto the Mexican border. This report presentsquantitative data and statistical estimates of totaleffort, total catch, catch of preferred sport fishspecies, and length-frequencies of size-regulatedspecies.An estimated 944,000 organisms were landed by 315,000anglers and 16,500 divers. A large variety of specieswas landed, but six species contributed over one-halfof the catch. Divers landed very few sublegalorganisms, but anglers took large numbers of sublegalsize fish. Continuance of this study will be necessaryto show changes in fish availability, fishing pressure,and compliance with fishing regulations. (64pp.)
    Keywords: Management ; Fisheries
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  • 79
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    Southern California anchovy reduction fishery sampling plan review (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/62 | 8 | 2011-09-29 13:04:16 | 62 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The sampling plan applied to the northern anchovy, Engraulis mordax, reduction fishery catch was reviewed to determine the effects on age composition estimates which would be caused by decreasing the sample size per stratum of catch. Age composition estimates for samples of 5, 10, and 15 per stratum were computer calculated using the sampling plan program and then compared with estimates for the standard sample of 30 from the same strata. As the sample size decreased the variances of the age composition statistics greatly increased. Errors were detected in the computer program and the variance equation have been corrected. (30pp.)
    Keywords: Management ; Fisheries ; Biology ; Northern anchovy ; Engraulis mordax
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  • 80
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    Southern California partyboat sampling study Quarterly Report no. 9 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/66 | 8 | 2011-09-29 13:04:02 | 66 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between July 1 and September 30, 1977, Departmentalpersonnel sampled catches during 184 trips aboard commercial passenger fishing vessels operating in southernCalifornia. A total of 28,617 fishes belonging to 89species was identified and measured. Otoliths for agedetermination studies were removed from 222 rockfishcarcasses representing 20 species.The 10 most commonly sampled species during thequarter accounted for 82.9% of the catch. The most frequently sampled fishes were kelp bass, Paralabraxclathratus (18.9%); Pacific mackerel, Scomber japonicus(17.6%); olive rockfish, Sebastes serranoides (15.5%);blue rockfish, S. mystinus (8.7%); barred sand bass, P.nebulifer (8.6%); California barracuda, Sphyraenaargentea (4.9%); sculpin, Scorpaena guttata (2.4%);bocaccio, S. paucispinis (2.3%); white croaker, Genyonemuslineatus (2.1%); and squarespot rockfish, S. hopkinsi (1.8%).Partyboat activity continued to center on surfacefishing. (33pp.)
    Keywords: Management ; Fisheries ; Biology
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  • 81
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    Southern California independent sport fishing survey Quarterly Report no. 9 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/67 | 8 | 2011-09-29 13:04:07 | 67 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the July 1 - September 30, 1977 quarter, 29launch ramps, hoists, and boat rental locationswere sampled 380 times. During the sample days25,256 anglers and 1,445 divers were interviewed.They expended 179,564 effort-hours and landed64,371 fishes, molluscs, crustaceans, echinoderms,and coelenterates of 179 identified species.The ten most commonly landed species were 1)white croaker, Genyonemus lineatus, 25%; 2)Pacific mackerel, Scomber japonicus, 8%; 3)olive rockfish, Sebastes serranoides, 7%; 4)kelp bass, Paralabrax clathratus, 6%; 5) blue rockfish, Sebastes mystinus, 3%; 6)barred sand bass, Paralabrax nebulifer, 3%; 7)brown rockfish, Sebastes auriculatus, 2%; 8)spotted sand bass, Paralabrax maculatofasciatus, 2%;9)grass rockfish, Sebastes rastrelliger, 2%; and10)queenfish, Seriphus politus, 2%. (28pp.)
    Keywords: Management ; Fisheries
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  • 82
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    Preliminary report on the ability of marine recreational fishermen to identify the more commonly caught sportfish (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/70 | 8 | 2011-09-29 22:37:38 | 70 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Fishermen on piers and privately-owned boats in southernCalifornia were surveyed to determine their ability toidentify (by common name) 18 of the more commonly caughtsportfish. Anglers were shown color photographs of the fishand asked to identify them. Most people were not able toidentify more than 5 or 6 species correctly. The numberof incorrect responses (calling one species by another'sname, or using a non-recommended common name) was nothigh. Instead, it was the level of non-response (thefisherman had no idea what the species was) that wassurprisingly high.The results of the survey indicate that anglers are notfamiliar with the names of the fish they are most likelyto catch. This has serious implications concerning ourfishery management programs which depend on anglers'compliance with fishing regulations. The effectivenessof the programs depends in part on anglers being ableto recognize regulated species when encountered. (30pp.)
    Keywords: Management ; Fisheries
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  • 83
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    Southern California commercial passenger fishing vessel sampling study Quarterly Report no. 13: July 1 - September 30, 1978 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/69 | 8 | 2011-09-29 22:38:34 | 69 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between July 1 and September 30, 1978, Departmental personnel sampled catches during 185 trips aboard commercial passenger fishing vessels (partyboats) operating in southern California. A total of 35,984 fishes representing 98 species were identified and measured.Otoliths for age determination studies were removed from 285 rockfish carcasses representing 18 species. In addition, 10 long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 957 fishes comprising 17 species were identified and measured at dockside from these vessels.The ten most commonly seen species during the quarter accounted for 83.5% of the southern California catch. The most frequently sampled species were Pacific mackerel, Scomber japonicus (26.5%); kelp bass, Paralabrax clathratus (20.5%); bocaccio, Sebastes paucispinis (8.2%); Pacific bonito, Sarda chiliensis (7.7%); barred sandbass, P. nebulifer (6.7%); olive rockfish, Sebastes serranoides (4.9%); white croaker, Genyonemus lineatus (2.9%); blue rockfish, S. mystinus (2.7%) ; chilipepper, S. goodei (1.8%); and albacore, Thunnus alalunga (1.7%). Data gathered from long-range vessels showed the top five species accounted for 92.6% of the fish sampled.The most frequently sampled species were yellowtail, Seriola dorsalis (61.5%); wahoo, Acanthocybium solanderi (11.7%); albacore (8.3%); yellowfin tuna, T. albacares (6.8%); and giant sea bass, Stereolepis gigas (4.4%). (59pp.)
    Keywords: Management ; Fisheries
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  • 84
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    Southern California partyboat sampling study Quarterly Report no. 10 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/73 | 8 | 2011-09-29 22:37:44 | 73 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between October 1 and December 31, 1977, Departmentalpersonnel sampled catches during 166 trips aboard commercialpassenger fishing vessels operating in southern California.A total of 27,468 fishes belonging to 101 species wereidentified and measured. Otoliths for age determinationstudies were removed from 263 rockfish carcasses representing 27 species. In addition, 37 long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 7,204 fishes comprising 20 species was identified and measured at dockside from these vessels.The 10 most commonly taken species during the quarteraccounted for 74.3% of the southern California catch. Themost frequently sampled species were chilipepper, Sebastesgoodei (16.1%); Pacific mackerel, Scomber japonicus (15.4%) ; bocaccio, Sebastes paucispinis (10.1%); kelp bass, Paralabrax clathratus (7.8%); halfmoon, Medialuna californiensis (5.7%); olive rockfish, Sebastes serranoides (5.4%); blue rockfish, S. mystinus (4.4%); greenspotted rockfish, S. chlorostictus (3.4%); vermilion rockfish, S. miniatus (3.2%); and Pacific bonito, Sarda chiliensis (2.7%). Data gathered from long-range trips showed the top five species accounted for 88.8% of the fish sampled. The most frequently sampled species were yellowtail, Seriola dorsalis (31.0%); yellowfin tuna, Thunnus albacares (23.7%); dolphinfish, Coryphaena hippurus (18.6%); wahoo, Acanthocybium solanderi (10.0%); and snowy grouper, Epinephelus niveatus (5.6%). (67pp.)
    Keywords: Management ; Fisheries
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  • 85
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    Results of the 1977 southern California pismo clam survey (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/75 | 8 | 2011-09-29 22:38:00 | 75 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A Pismo clam, Tivela stultorum, survey was conductedin January 1977 on selected southern California beaches.Effort and catch information was collected through clammer interviews. Estimates for the two day survey were 1,596clammers spending 2,506 hours to take 6,139 clams. Comparisons were made between the 1977 survey results andprevious surveys.Clams were collected for length and age studies. Complianceto the 4.5-inch (114.3 mm) minimum size limit appeared to be good. (15pp.)
    Keywords: Fisheries ; Biology ; Pismo clam ; Tivela stultorum ; California
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  • 86
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    Evaluation of regulations concerning the fishery for California halibut, Paralichthys californicus (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/78 | 8 | 2011-09-29 22:38:14 | 78 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Evaluation of the capture of California halibut in relation to Article 13 (Sections 8495, 8496,8497 and 8498) of the Fish and Game Code, shows that the regulation is doing its job. Nearly all undersized (less than 22 inches) juvenile halibut are escaping through the 7 1/2 inch mesh trawl cod end and retention of other fishesseldom approach the 226.8 kg (500 lb) limitimposed by regulation. (5pp.)
    Keywords: Management ; Fisheries ; California halibut ; Paralichthys californicus ; fisheries
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  • 87
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    Southern California partyboat sampling study Quarterly Report no. 12: April 1 - June 30, 1978 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/72 | 8 | 2011-09-29 22:37:42 | 72 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between April 1 and June 30, 1978, Departmental personnelsampled catches during 148 trips aboard commercial passengerfishing vessels operating in southern California. A total of29,374 fishes representing 97 species were identified andmeasured. Otoliths for age determination studies were removed from 72 rockfish carcasses representing 11 species. In addition, nine long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 1,190 fishes comprising 21 species was identified and measured at dockside from these vessels.The 10 most commonly taken species during the quarteraccounted for 76.9% of the southern California catch. The most frequently sampled species were kelp bass, Paralabrax clathratus (21.1%); bocaccio, Sebastes paucispinis (15.5%); Pacific mackerel, Scomber japonicus (13.1%); white croaker, Genyonemus lineatus (6.0%); chilipepper, Sebastes goodei (4.8%); California barracuda, Sphyraena argentea (4.5%); kelp rockfish, Sebastes atrovirens (3.6%); barred sand bass, P. nebulifer (3.2%); halfmoon, Medialuna californiensis (2.6%); and blue rockfish, S. mystinus (2.6%).Data gathered from long-range vessels fishing off Baja California showed the top five species accounted for 94.0% of the fish sampled. The most frequently sampled species were yellowfin tuna, Thunnus albacares (34.4%); yellowtail, Seriola dorsalis (28.7%); wahoo, Acanthocybium solanderi (22.9%); snowy grouper, Epinephelus niveatus (5.9%); and leather bass, E. dermatolepis (2.0%). (69pp.)
    Keywords: Management ; Fisheries
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  • 88
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    Southern California independent sport fishing survey Quarterly Report no. 8 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/81 | 8 | 2011-09-29 22:38:19 | 81 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the April 1 - June 30, 1977 quarter, 28 launchramps, hoists, and boat rental locations were sampled300 times. During the sample days 17,354 anglers and853 divers were interviewed. They expended 120,065effort hours and landed 39,369 fishes of 152 identifiedspecies.The ten most commonly landed species were: 1) whitecroaker, Genyonemus lineatus, 25%; 2) Pacific bonito,Sarda chiliensis, 8%; 3) kelp bass, Paralabraxclathratus, 6%; 4) Pacific mackerel, Scomber japonicus,6%; 5) barred sand bass, Paralabrax nebulifer, 4%;6) olive rockfish, Sebastes serranoides, 3%; 7) copperrockfish, S. caurinus, 3%; 8 ) bocaccio, S. paucispinis,3%; 9). vermilion rockfish, S. miniatus, 2%; and 10)greenspotted rockfish, S. chlorostictus, 2%. (22pp.)
    Keywords: Management ; Fisheries
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  • 89
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    Status of the spawning biomass of the Pacific sardine, 1976-77 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/77 | 8 | 2011-09-29 22:38:07 | 77 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: In order to initiate a fishery for the Pacificsardine, Sardinops sagax caeruleus, it is required that the spawning biomass be determined to have reached a minimum of 20,000 short tons. Data from ichthyoplankton surveys, sea survey cruises, the anchovy bait fishery,and jack mackerel purse seine fishery are analyzed for evidence of an increase in population size. The present level of the spawning population of the northern stocks ofsardines is determined to be far below the 20,000 tons required to initiate a fishery. (8pp.)
    Keywords: Fisheries ; Biology ; Pacific sardine ; Sardinops sagax caeruleus ; fisheries
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  • 90
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    Southern California partyboat sampling study Quarterly Report no. 8 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/82 | 8 | 2011-09-29 22:37:24 | 82 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between April 1 and June 30, 1977, 125 trips weresampled aboard southern California partyboats by Departmentpersonnel. A total of 14,842 fishes belonging to 72 species was identified and measured. Otoliths wereremoved from 134 rockfish carcasses representing 20species for age deterination studies.The 10 most common species sampled during the quarteraccounted for 76.9% of the catch. Individually, the mostcommon were Pacific mackerel, Scomber japonicus (16.9%);kelp bass, Paralabrax clathratus (14.5%); bocaccio, Sebastes paucispinis (11.4%); Pacific bonito, Sarda chiliensis (10.3%); barred sand bass, Paralabrax nebulifer (5.6%); olive rockfish, Sebastes serranoides (5.3%); chilipepper, S. goodei (4.0%); California barracuda, Sphyraena argentea (2.9%); and ocean whitefish, Caulolatilus princeps (2.8%).Fishing effort switched from "rockcod" to surfaceactivity as it did during the second quarter of 1976 (26pp.)
    Keywords: Management ; Fisheries
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  • 91
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    Results of the jack mackerel subpopulation discrimination feasibility study (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/84 | 8 | 2011-09-29 22:37:18 | 84 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A report is made on the feasibility of discriminating subpopulations of jack mackerel, Trachurus symmetricus, off of the southern California and Baja California coast. Histochemical, morphometric, and meristic characters are compared from four samples of approximately 200 fish each taken from three areas. The data are analyzed for homogeneity by chi-square tests. Heterogeneity was found only in anal fin ray counts. Recommendations for a comprehensive study are made. (16pp.)
    Keywords: Fisheries ; Biology ; Jack mackerel ; Trachurus symmetricus
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  • 92
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    Southern California partyboat sampling study Quarterly Report no. 7 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/83 | 8 | 2011-09-29 22:37:05 | 83 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: From January 1 through March 31, 1977, Departmentpersonnel made 100 sampling trips aboard southern California partyboats. A total of 16,400 fishes from 68 species was identified and measured.Otoliths, for age determination studies, were removedfrom 301 rockfish carcasses representing 23 species.The 10 most common species sampled during this quarterwere bocaccio, Sebastes paucispinis (38.5%); chilipepper,S. goodei (9.8%); widow rockfish, S. entomelas (7.7%);blue rockfish, S. mystinus (6.2%); olive rockfish, S. serranoides (4.2%); Pacific mackerel, Scomber japonicus (2.8%); vermilion rockfish, Sebastes miniatus (2.7%); speckled rockfish, S. ovalis (2.7%); greenspotted rockfish, S. chlorostictus (2.5%); and squarespot rockfish, S. hopkinsi (2.4%). Fishing effort during this quarter was directed almostexclusively toward "rockcod", as it was for the sameperiod in 1976. (23pp.)
    Keywords: Management ; Fisheries ; sport fishing ; California
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  • 93
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    Southern California partyboat sampling study Quarterly Report no. 3 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/85 | 8 | 2011-09-29 22:37:21 | 85 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the period January 1 to March 31, 1976, Departmentpersonnel made 139 sampling trips aboard southern California partyboats. A total of 22,122 fishes from 73 species was identified and measured.Otoliths were removed from 1,536 rockfish carcasses representing 31 species for use in age determination.Sampling personnel tagged and released 68 Californiabarracuda, Sphyraena argentea, and 18 sablefish, Anoplopomafimbria.The five most common species sampled during this periodrepresented approximately 79% of the total number of fishesmeasured. These were, in order of importance; bocaccio,Sebastes paucispinis; chilipepper, Sebastes goodei; oliverockfish, Sebastes serranoides; greenspotted rockfish,Sebastes chlorostictus; and vermilion rockfish, Sebastesminiatus. Bocaccio alone accounted for 52% of the sampledcatch. (15pp.)
    Keywords: Management ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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    Southern California partyboat sampling study Quarterly Report no. 2 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/86 | 8 | 2011-09-29 22:36:47 | 86 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the period October 1 - December 31, 1975,Department personnel made 176 sampling trips aboardsouthern California partyboats. A total of 25,721 fishfrom 77 species was identified and measured.Otoliths were removed from 1,767 rockfish carcassesrepresenting 30 species for use in age determination.Sampling personnel tagged and released 192 Californiabarracuda, Sphyraena argentea; 2 white seabass, Cynoscionnobilis; and 29 sablefish, Anoplopoma fimbria.The 10 most common species sampled during this periodrepresented 84% of the total number of fish measured.These were, in order of importance; bocaccio, Sebastespaucispinis; Pacific bonito, Sarda chiliensis; chilipepper,Sebastes goodei; olive rockfish, Sebastes serranoides;vermilion rockfish, Sebastes miniatus, white croaker,Genyonemus lineatus; blue rockfish, Sebastes mystinus;greenspotted rockfish, Sebastes chlorostictus; sculpin,Scorpaena guttata; and Pacific mackerel, Scomber japonicus.Bocaccio alone accounted for 44% of the sampled catch. (20pp.)
    Keywords: Management ; Fisheries
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  • 95
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    Southern California partyboat sampling study Quarterly Report no. 1 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/88 | 8 | 2011-09-29 22:37:03 | 88 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Estimates of the total yearly catch from the partyboat fishery have been collected and published on a routine basis since 1935. Important data relating to the size and age composition of this segment of the marine sportfishery have been lacking. As a consequence, a southern California partyboat sampling study was initiated on April 1, 1975. The main objective of this sampling is to identify and measure all fishes taken by sportsmen on partyboatswith primary emphasis given to California barracuda, Sphyraena argentea; yellowtail, Seriola dorsalis; white seabass, Cynoscion nobilis; and rockfishes, Sebastes spp. (22pp.)
    Keywords: Management ; Fisheries
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    Status of the spawning biomass of the Pacific sardine, 1975-1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/87 | 8 | 2011-09-29 22:36:50 | 87 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: In order to initiate a fishery for the Pacific sardine, Sardinops sajax caeruleus, it is required that the spawning biomass be determined to have reached a minimum of 20,000 short tons. Data from ichthyoplankton surveys, night-light surveys, the anchovy bait fishery, and jack mackerel purse seine fishery are analyzed for evidence of an increase in population size. The present level of the spawning population of the northern stocks of sardinesis determined to be far below the 20,000 tons required toinitiate a fishery. (11pp.)
    Keywords: Fisheries ; Pacific sardine ; Sardinops sajax caeruleus ; fisheries
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  • 97
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    Results of a private boat angling survey for estimating catch and effort, conducted at Oceanside, California during May and June 1974 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/93 | 8 | 2011-09-29 22:36:45 | 93 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Two survey methods (postcard and interview) for generating marine fish catch and effort estimates for privateboats were field tested at Oceanside, California duringMay and June of 1974. Sampling days were pre-assigned toweekday and weekend strata. The postcard survey was shownto produce biased estimates. Causes of the various biasesare discussed. The interview survey provided backgrounddata to test for biases in the postcard survey andbetween marina an launch ramp interview areas. (31pp.)
    Keywords: Management ; Fisheries ; Oceanside ; California ; sport fishing
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  • 98
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    Results of the 1976 southern California pismo clam census (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/95 | 8 | 2011-09-29 22:36:12 | 95 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: A Pismo clam, Tivela stultorum, census was conductedin January 1976 on selected southern California beaches.Effort and catch information was collected throughclamer interviews. Estimates for January 17 on beachessampled were 3,296 clammer-hours, 2,170 clammers, and10,739 legal clams (4.5 inches or larger) harvested.Clams were collected for age and growth studies.Samples of clams from the Long Beach to Newport Beach pierarea demonstrate the fastest growth rates of any Pismoclams reported in the literature. Clams begin to be recruited to the fishery at age 40 months. (14pp.)The 1974 year class was the largest on beachessampled. Recruitment to the fishery will be poor for the1976-77 and 1977-78 seasons and clamming will be dependenton large older clams.
    Keywords: Fisheries ; Aquaculture ; Pismo clam ; Tivela stultorum ; California
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  • 99
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    Status of major southern California marine sport fish species with management recommendations, based on analyses of catch and size composition data collected on board commercial passenger fishing vessels from 1985 through 1987 (2021)
    California Department of Fish and Game, Marine Resources Division | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/113 | 8 | 2011-09-29 22:35:16 | 113 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: This report on the status of major southern California marine sport fish species, together with management recommendations, is based on analyses of catch and size composition data, which were collected on board Commercial Passenger Fishing Vessels (CPFV) from 1985 through1987. The project was designed to determine the status of those fishes that support the CPFV industry, and to make management recommendations when deemed necessary.We collected and analyzed data based on random, stratified, on-board sampling of weekday (excluding holidays), open CPFV's on a year-round basis. We sampled 1/2-day, 3/4-day, and full-day type trips at a level of 5%. The survey area extended from below the United States-Mexicanborder to Point Arguello. Catch estimates were extrapolated to include weekday as well as weekend and holiday, open and chartered CPFV's.We sampled 736 CPFV trips in 1985, 650 in 1986, and 631 in 1987. We encountered 180 species of fishes, including 49 species of rockfishes. We performed detailed analyses on 14 non-rockfish species and 12 rockfish species, as well as all fishes as a group and all rockfishes as a group.We found a moderate increase in total catch of combined fish species between this study and one in the mid-1970's, due primarily to sizeable increases in catches of Pacific mackerel, kelp bass, barred sand bass,and barracuda. However, we also found that there has been more than a 50% decline in the CPFV rockfish catches, due primarily to substantial decreases in catches of bocaccio, chilipepper, and olive rockfish. We have recommended that the current 15-rockfish bag limit regulation be reduced to a 10-rockfish bag limit, and that additional and equitable conservation measures also be implemented on the commercial rockfish fishery. (385pp.)
    Keywords: Management ; Fisheries ; sport fisheries ; California
    Repository Name: AquaDocs
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  • 100
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    Status of Pacific Mackerel spawning population, 1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/132 | 8 | 2021-02-27 19:36:05 | 132 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: In order to initiate a fishery for the Pacific mackerel, Scomber japonicus, it is required that the spawning biomass be determined to have reached 10,000 short tons. Tag and recovery data and jack mackerel, Trachurus symmetricus, fishery data are analyzed for evidence of an increase in Pacific mackerel population size. The present level of the spawning population of Pacific mackerel, although larger than in recent years, is determined to fall short of the 10,000 tons needed to initiate a fishery. (24pp.)
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; Jack Mackerel ; Trachurus symmetricus ; fisheries
    Repository Name: AquaDocs
    Type: monograph
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