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  • 1
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    Mariculture in California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/673 | 8 | 2011-09-29 21:42:47 | 673 | California Department of Fish and Game
    Details
    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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  • 2
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    Observations on the larval hatching success of dungeness crab, Cancer magister, from the San Francisco and Eureka-Crescent City region (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/682 | 8 | 2011-09-29 21:41:38 | 682 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Ovigerous Dungeness crabs were collected from the SanFrancisco and Eureka-Crescent City regions and maintained atthe Department's Marine Culture Laboratory near Monterey.Hatching success, expressed as viable larvae released, wasmeasured and compared by region. Larval counts were made from 15 Dungeness crabs, 5 from the San Francisco region, 7 from the Eureka-Crescent City area and 3 of unknown origin. Mean hatching success exceeded 80% in the San Francisco region, and averaged more than 90% in the Eureka-Crescent City area. However, a Student's t-Test showed this difference in hatching success was not significant. (16pp.)
    Keywords: Biology ; Dungeness crab ; Cancer magister ; California ; San Francisco
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    Diablo Canyon power plant site ecological study annual report; July 1, 1973 - June 30, 1974 (2021)
    California Department of Fish and Game, Marine Resources Region | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/147 | 8 | 2011-09-29 22:31:06 | 147 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: We completed surveys of 11 permanent subtidal stations, 17 random subtidal stations, 4 permanent intertidal stations, and 29 random intertidal stations during the period. In addition, we conducted studies on the sea otter, Enhydra lutris, herd located between Diablo Cove and Point Buchon, continued the annual count of the mature bed of the bullkelp, Nereocystis luetkeana, within Diablo Cove, and interviewed commercial abalone and sea urchin divers for catch-per-unit-of-effort data. During the year, sea otters moved south into the cove east of Lion Rock and then into Diablo Cove. (107pp.)The commercial abalone fishery showed signs of decline, while the commercial sea urchin fishery continued to expand. Several diving surveys were conducted inside Intake Cove to check on dredging progress; the cove appears to have become a haven for juvenile rockfish (Sebastes). The red abalone temperature tolerance studies were completed at the Department's marine culture laboratory at Granite Canyon.
    Keywords: Ecology ; Fisheries ; Biology ; Diablo Canyon Power Plant ; California ; environmental impact
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    Diablo canyon power plant site ecological study Quarterly Report No. 1; July 1 - September 30, 1973 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/149 | 8 | 2011-09-29 22:30:57 | 149 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: The second phase of ecological studies at the Diablo Canyon Power Plant site was initiated in July 1973. The first, phase conducted during 1970-71 involved baseline ecological surveys with special reference to abalone and bony fishes. The objectives of this second phase are to quantitativey monitor abalone and algal communities, including predatorsand competitors, along permanent intertidal and subtidaltransects established during the first phase.During the quarter nine permanent transects were located and marked with new buoys. Surveys on seven of these transects were completed, and the commercial sea urchin and red abalone fisheries operating in the Diablo Cove area were monitored.Sea otter activities between Diablo Cove and Pt. Buchon were recorded to determine the location of the herd and their general food habits. Little evidence of feeding activity has been observed in Diablo Cove.Temperature tolerance studies, began in March 1973 on red abalones, were continued. Problems in obtaining viable abalone larvae hampered this project.(11pp.)
    Keywords: Ecology ; Fisheries ; Biology ; Diablo Canyon Power Plant ; California ; environmental impact
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Dungeness crab research program: Report for the Year 1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Menlo Park, CA
    In:  http://aquaticcommons.org/id/eprint/186 | 8 | 2011-09-29 22:23:36 | 186 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: All larval stages of the 1976 year class, with the exception of the 5th zoeal stage, were found in Gu1f waters January through March. The first post-larval stage was collected in San Pablo Bay in May. Fifty percent of 1976 year class crabs entered the Bay complex as compared to nearly 80% in 1975. The 1976 year class appears relatively weak. No electrophoretic polymorphism was found in Cancer magister to be of value in Dungeness crab population determinations.Multi-variate correlations comparing crab landings with an array of oceanographic parameters and the crab density dependent factor were computer-run for both northern and central California. The most significant correlating factors at the time late stage larvae prevail were sea level and atmospheric pressure for central California and, for northern California, the density dependent factor and sea surface temperature. Female crabs held at controlled temperatures indicated gonad maturation and spawningmay be induced by increased temperature. Analyses of crabtissues revealed burdens of petroleum hydrocarbons, silver,selenium, cadmium, and PCB's higher in central California crabs, while DDE was found in higher amounts in northern California crab tissue.Thru-flow culture systems were developed which should yield about 163 megalopae of Dungeness crabs in 63 days from 1,200 laboratory hatched zoeae.(46pp.)
    Keywords: Fisheries ; Biology ; Dungeness crab ; California ; Cancer magister ; fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    Diablo Canyon Power Plant site ecological study Quarterly Report No. 2; October 1 - December 31, 1973 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/215 | 8 | 2011-09-29 22:26:36 | 215 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: During the period October 1 - December 31, 1973, Fall surveys of permanent subtidal stations were completed with one station being surveyed. We were unable to locate 3 subtidal stations.Intertidal studies were initiated in November. A total of 12random stations was surveyed.Interviews were conducted with commercial abalone fishermenworking between Pt. Buchon to Pecho Rock. We continued tomonitor the sea otter herd foraging between Pt. Buchon andLion Rock.Progress was achieved in the abalone temperature tolerancestudies when a successful spawning occurred. (20pp.)
    Keywords: Ecology ; Biology ; Diablo Canyon Power Plant ; California ; environmental impact
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    Diablo Canyon Power Plant site ecological study Quarterly Report No. 3; January 1 - March 31, 1974 (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/218 | 8 | 2011-09-29 22:26:41 | 218 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: During the period January 1 - March 31, 1974, winter surveys of the permanent subtidal stations were initiated. Three stations were surveyed.We completed our winter random intertidal surveys; a total of 14 stations in Diablo Cove and the North Control Area were visited.The commercial sea urchin fishery resumed and we began interviewing fishermen again.Very little commercial abalone fishing occurred due to theone-month closed season and winter storms.We observed a sea otter in North Cove for the first time and harbor seals were also observcd on the eastern end of the south breakwater for the first time since we began our studies. (17pp.)
    Keywords: Ecology ; Fisheries ; Biology ; Diablo Canyon Power Plant ; California ; environmental impact
    Repository Name: AquaDocs
    Type: monograph
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