17237 AFSC/ABL: Chum salmon bycatch genetic stock identification 1994-1995 Bering Sea Data Set Published / External 12324 Auke Bay Laboratories Project Completed 1998-12-01 In some years, the Bering Sea trawl fishery incidentally harvests (bycatch) large numbers of chum salmon. Because chum salmon were declining in some western Alaska areas, the origins of the chum salmon bycatch were important. Tagging studies have shown that chum salmon originating in Asia and North America migrate through the eastern Bering Sea. Genetic stock identification (GSI), a method of estimating stock composition in mixed-stock fisheries, has helped in evaluating stock contributions to salmon fisheries on the western coast of North America. Through cooperative efforts between state and federal agencies, a comprehensive genetic baseline for Pacific Rim chum salmon stocks has been developed, which enables GSI in fisheries such as the Bering Sea trawl fishery. In 1994, the National Marine Fisheries Service, Auke Bay Laboratory, initiated a feasibility study of GSI in determining the origins of the chum salmon bycatch in the Bering Sea trawl fishery. Sampling in 1995 was intensified and resulted in samples covering the entire fishing season, representing nearly 11% of the total chum salmon bycatch. Estimates for our 1994 fishery samples over three period were 39-55% Asian stocks, 20-35% western Alaska stocks, and 21-29% southeastern Alaska, British Columbia, or Washington stocks. One small sample (N=47) of maturing fish showed a surprisingly large contribution of British Columbia stocks (53%). Estimates for our 1995 samples over seven time periods were 13-51% Asian stocks, 33-53% western Alaska stocks, and 9-46% southeastern Alaska, British Columbia, or Washington stocks. As in 1994, the sample of maturing fish (N=277) showed a large contribution of British Columbia stocks (49%) and Washington stocks (25%). This data set contains the genetic bycatch data. Loaded by batch 3855, 12-18-2012 17:55 Theme ISO 19115 Topic Category biota Spatial Geographic Names Information System Alaska Spatial Geographic Names Information System Bering Sea Auke Bay Laboratories Juneau AK US Data Set Files None Planned Document (digital) unknown unknown unknown Data Steward 2015-10-17 Person Kondzela, Chris Chris.Kondzela@noaa.gov Distributor 2015-10-17 Person Kondzela, Chris Chris.Kondzela@noaa.gov Originator 2012-12-18 Person Kondzela, Chris Chris.Kondzela@noaa.gov Point of Contact 2015-10-17 Person Kondzela, Chris Chris.Kondzela@noaa.gov Ground Condition -179.3 -163 60 52 Alaska, Bering Sea Discrete 1994 Discrete 1995 Unclassified N/A For scientific, management, and regulation compliance purposes, these data are confidential under the Magnuson-Stevens Fishery Conservation and Management Act; as amended, Public Law 109-479; 16 U.S.C. 1953; implemented at 50 CFR 679.50. Therefore unprocessed (raw) data can be shared only with authorized persons; however aggregated forms of the data are generally available. The user must adhere to restrictions placed on publication of data by the Magnuson-Stevens Fishery Conservation and Management Act. https://www.ncei.noaa.gov/ NCEI to be determined Microsoft Excel Spreadsheet None Contact the dataset POC for full QA/QC methodology Yes Unknown Yes Yes yes unknown no delay To Be Determined unknown IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption. Contact the dataset POC for full methodology gov.noaa.nmfs.inport:17237 SysAdmin InPortAdmin 2012-12-18T17:55:51 SysAdmin InPortAdmin 2025-05-15T19:15:45 2016-05-05 Alaska Fisheries Science Center AFSC 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov 0700-1700 Pacific Time 1001 Public No No 2016-05-05 1 Year 2017-05-05 None collection multiple species vertebrates Empire Biovitae Carbon-based lifeforms Kingdom Animalia Phylum Chordata Subphylum Vertebrata Superclass Osteichthyes Class Actinopterygii Subclass Neopterygii Infraclass Teleostei Superorder Protacanthopterygii Order Salmoniformes Family Salmonidae Subfamily Salmoninae Genus Oncorhynchus Species keta chum salmon