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  • 1
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    California Department of Fish and Game
    In:  http://aquaticcommons.org/id/eprint/20669 | 222 | 2016-05-20 22:21:15 | 20669 | California Department of Fish and Game
    Publication Date: 2021-07-11
    Description: Runs have dwindled in many parts of California and additional protection or management actions are needed to protect the fish from further declines. The following is a report requested by the Fish and Game Commission on the status and current management of spring-run chinook salmon stocks.Fish counts presented in this report were developed by a variety of methods. Some of them are estimates of total run-size or spawning escapement, while others are indices of abundance derived from counts of maturing fish in their holding areas. It is important to note the stock assessment method used. Index area counts will always underestimate the true run size, often by a very large margin.
    Keywords: Fisheries ; Management
    Repository Name: AquaDocs
    Type: monograph
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    Format: 33
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  • 2
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 10
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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