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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
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  • 2
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    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
    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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  • 3
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    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
    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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  • 4
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    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
    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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  • 5
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    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
    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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  • 6
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    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
    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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  • 7
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    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
    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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  • 8
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    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
    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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  • 9
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    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
    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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  • 10
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    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
    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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    Type: monograph
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  • 11
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    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
    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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  • 12
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    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
    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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  • 13
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    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
    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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  • 14
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    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
    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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  • 15
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    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
    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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  • 16
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    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
    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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  • 17
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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
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  • 18
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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
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  • 19
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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
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  • 20
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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
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  • 21
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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
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  • 22
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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
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  • 23
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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
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  • 24
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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
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  • 25
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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
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  • 26
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    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
    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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  • 27
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    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
    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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    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
    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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  • 29
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    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
    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
    Repository Name: AquaDocs
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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    Publication Date: 2021-07-08
    Description: (Document pdf contains 19 pages)
    Keywords: Fisheries ; Biology ; artificial reefs
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    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
    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
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    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
    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
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    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
    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
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    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
    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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    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
    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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    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
    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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    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
    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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    California Department of Fish and Game | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/1778 | 8 | 2011-09-29 20:04:23 | 1778 | California Department of Fish and Game
    Publication Date: 2021-07-10
    Description: The Channel Islands—sometimes called the Galapagos of North America—are known for their great beauty, rich biodiversity, cultural heritage, and recreational opportunities. In 1980, in recognition of the islands’ importance, the United States Congress established a national park encompassing 5 of California’s Channel Islands (Santa Barbara, Anacapa, SantaCruz, Santa Rosa, and San Miguel Islands) and waters within1 nautical mile of the islands. In the same year, Congress declared a national marine sanctuary around each of these islands, including waters up to 6 nautical miles offshore. Approximately 60,000 people visit the Channel Islands each year for aquatic recreation such as fishing, sailing, kayaking, wildlife watching, surfing, and diving. Another 30,000 people visit the islands for hiking, camping, and sightseeing. Dozens of commercial fishing boats based in Santa Barbara, Ventura, Oxnard, and other ports go to theChannel Islands to catch squid, spiny lobster, sea urchin, rockfish, crab, sheephead, flatfish, and sea cucumber, among other species. In the past few decades, advances in fishing technology and the rising number of fishermen, in conjunction with changing ocean conditions and diseases, have contributed to declines in some marine fishes and invertebrates at the Channel Islands. In 1998, citizens from Santa Barbara and Ventura proposed establishment of no-take marine reserves at the Channel Islands, beginning a 4-year process of public meetings, discussions, and scientific analyses. In 2003, the California Fish and Game Commission designated a network of marine protected areas (MPAs) in state waters around the northern Channel Islands. In 2006 and 2007, the National Oceanic and Atmospheric Administration (NOAA) extended the MPAs into the national marine sanctuary’s deeper, federal waters.To determine if the MPAs are protecting marine species and habitats, scientists are monitoring ecological changes. They are studying changes in habitats; abundance and size of species of interest; the ocean food web and ecosystem; and movement of fish and invertebrates from MPAs to surrounding waters. Additionally, scientists are monitoring human activities such as commercial and recreational fisheries, and compliance with MPA regulations.This booklet describes some results from the first 5 years of monitoring the Channel Islands MPAs. Although 5 years is not long enough to determine if the MPAs will accomplish all of their goals, this booklet offers a glimpse of the changes that are beginning to take place and illustrates the types of information that will eventually be used to assess the MPAs’ effectiveness.(PDF contains 24 pages.)
    Keywords: Management ; Ecology ; Conservation ; Fisheries
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2094 | 111 | 2010-12-14 16:53:34 | 2094 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF has 47 pages.)
    Keywords: Conservation ; Fisheries ; Biology ; Pinniped ; pinnipeds ; Pacific Harbor seal ; California Seal Lion ; fishery interactions ; Salmon ; Salmonid ; Economics ; California ; aerial surveys ; commercial fisheries ; recreational fisheries ; commercial passenger fishing vessel ; CPFV ; Pacific States Marine Fisheries Commission ; PSMFC ; CDFG
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2385 | 8 | 2011-09-29 19:08:03 | 2385 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 6 pages.)
    Keywords: Fisheries ; Biology ; southern California ; central ; California ; northern ; California ; cruise report ; N. B Scofield ; pink shrimp ; Pandalus jordani ; plankton ; larvae
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2392 | 8 | 2011-09-29 19:08:38 | 2392 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 4 pages.)
    Keywords: Fisheries ; Biology ; Salt Point ; California ; Sonoma County ; Pescadero Point ; California ; San Mateo County ; cruise report ; N. B Scofield ; crab ; shrimp ; traps
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2391 | 8 | 2011-09-29 19:08:22 | 2391 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; Ft. Bragg ; California ; Avila ; California ; cruise report ; N. B Scofield ; N. B. Nautilus ; halibut ; trawl
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2386 | 8 | 2011-09-29 19:08:04 | 2386 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; Baja California ; California ; cruise report ; N. B Scofield ; albacore ; oceanography
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2427 | 8 | 2011-09-29 19:02:06 | 2427 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 4 pages.)
    Keywords: Fisheries ; Biology ; Baja California ; Mexico ; California ; Ensenada ; Ballenas Bay ; sardines ; cruise report ; N. B. Scofield ; yellowtail ; tag and release ; bonito
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2429 | 8 | 2011-09-29 19:06:53 | 2429 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 4 pages.)
    Keywords: Fisheries ; Biology ; central California ; northern California ; cruise report ; N. B. Scofield ; market crab ; Cancer magister
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2435 | 8 | 2011-09-29 19:02:33 | 2435 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; Baja California ; San Quintin ; Point Conception ; California ; San Clemente Island ; Santa Catalina Island ; Anacapa Island ; Santa Cruz Island ; Santa Rosa Island ; San Miguel Island ; cruise report ; N. B. Scofield ; sardines ; jack mackerel ; Pacific mackerel ; northern anchovies
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2430 | 8 | 2011-09-29 19:02:18 | 2430 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 4 pages.)
    Keywords: Fisheries ; Biology ; Coos Bay ; Oregon ; Winchester Bay ; Oregon ; Trinidad Head ; California ; Redding Rock ; California ; cruise report ; N. B. Scofield ; ocean shrimp ; Pandalus jordani
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2434 | 8 | 2011-09-29 19:02:31 | 2434 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 2 pages.)
    Keywords: Fisheries ; Biology ; California ; Eureka ; Crescent City ; cruise report ; N. B. Scofield ; petrale ; English sole ; tag and release
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2444 | 8 | 2011-09-29 19:03:34 | 2444 | California Department of Fish and Game
    Publication Date: 2021-07-13
    Description: (PDF contains 7 pages.)
    Keywords: Fisheries ; Biology ; northern California ; central California ; Fort Bragg ; San Francisco ; cruise report ; N. B. Scofield ; pink shrimp ; Pandalus jordani ; bathythermograph ; market crabs ; Cancer magister ; sex ratios ; size
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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2255 | 8 | 2011-09-29 19:28:21 | 2255 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 1 page.)
    Keywords: Fisheries ; Biology ; cruise report ; N. B. Scofield ; California
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2254 | 8 | 2011-09-29 19:22:37 | 2254 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 1 page.)
    Keywords: Fisheries ; Biology ; cruise report ; California ; N.B. Schofield
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2257 | 8 | 2011-09-29 19:22:46 | 2257 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2258 | 8 | 2011-09-29 19:22:47 | 2258 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; cruise report ; California ; N.B. Scofield
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2261 | 8 | 2011-09-29 19:22:53 | 2261 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 2 pages.)
    Keywords: Fisheries ; Biology ; cruise report ; California ; N.B. Scofield
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2260 | 8 | 2011-09-29 19:22:51 | 2260 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 2 pages.)
    Keywords: Fisheries ; Biology ; cruise report ; California ; N.B. Scofield
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2259 | 8 | 2011-09-29 19:22:49 | 2259 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2256 | 8 | 2011-09-29 19:22:44 | 2256 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology
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    California Department of Fish and Game | Terminal Island, CA
    In:  http://aquaticcommons.org/id/eprint/2262 | 8 | 2011-09-29 19:22:56 | 2262 | California Department of Fish and Game
    Publication Date: 2021-07-12
    Description: (PDF contains 3 pages.)
    Keywords: Fisheries ; Biology ; cruise report ; California ; N.B. Scofield
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    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2904 | 8 | 2011-09-29 18:10:25 | 2904 | California Department of Fish and Game
    Publication Date: 2021-06-29
    Description: Four groups of fin clipped brown trout (Salmo trutta) fingerlings were planted in Hot Creek over a six year period. Survival and growth were estimated by fall and/or spring mark-and-recapture surveys. Yield to the angler for two of the tour groups stocked was estimated by stratified random creel surveys. Fingerling survival from the midsummer stocking period to fall averaged 51 %. Overwinter survival from young-of-the-year to yearling fish averaged 49%. Angler harvest of two groups of fingerlings stocked at densities of 16,082 fish/mile averaged 1,704 trout/mile (10.6%) and 194 lbs/acre. Abundant cover and microhabitat suitable tor young trout, ice-free winters, and rapid growth were factors viewed as contributing to high yields. Results do not suggest a change is needed in the general policy of not stocking brown trout fingerlings in California streams. Results do show that fingerlings stocked in Hot Creek, and presumably other productive streams with abundant cover, can effectively fill a void created by limited recruitment.(PDF contains 24 pages.)
    Keywords: Ecology ; Fisheries ; Aquaculture ; brown trout ; fingerling ; fish stocking ; mark-and-recapture ; creel ; California ; Hot Creek ; recruitment ; microhabitat
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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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    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
    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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  • 91
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 92
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 93
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 94
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 95
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 96
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 97
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 98
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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  • 99
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    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
    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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  • 100
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    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
    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
    Repository Name: AquaDocs
    Type: monograph
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