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The International Sampling Program : continent of origin and biological characteristics of Atlantic salmon collected at west Greenland in 2013
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2015
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Description:An Atlantic salmon (Salmo salar) mixed-stock fishery operating from 1 August through 31 October exists off the western coast of Greenland, which primarily harvests one-sea-winter (1SW) North American and European origin salmon destined to return to natal waters as twosea-winter spawning adults. To collect data on the biological characteristics and origin of the harvest necessary for international stock assessment efforts, parties to the North Atlantic Salmon Conservation Organization's West Greenland Commission agreed to participate in an international sampling program for the 2013 fishery. The sampling program was coordinated by the US's NOAA Fisheries and involved 5 samplers from 5 countries deployed among 3 communities (Sisimiut, Maniitsoq, and Qaqortoq) located on the west coast of Greenland. Reported landings in 2013 were 47.0 metric tons (t). Data on length, weight, freshwater and marine age from scale samples, and continent of origin from genetic analysis of tissue samples were collected. Since 2002 (with the exception of 2006 and 2011), unreported landings were identified by comparing the reported landings to the weight of the sampled harvest for each community. Underreporting was detected in 2 of the 3 communities (Sisimiut and Qaqortoq) and the total adjusted landings for these communities were approximately 0.7 t higher than the reported landings. In total, 1286 salmon were observed by the sampling teams, and 1156 of these were sampled for biological characteristics, which represented ~9% by weight of the reported landings. As seen since the mid-1990s, a high proportion of the harvested stock was of North American origin (81.6%) with the balance being European origin (18.4%). North American origin fish were primarily freshwater age 2 or 3 years (32.6% and 37.3% respectively) and 1SW (94.9%). European origin fish were primarily freshwater age 2 (68.2%) and 1SW (96.6%). The mean lengths of North American and European 1SW salmon were 66.2 and 64.6 cm and the mean whole weights were 3.33 and 3.16 kg, respectively. Approximately 11,500 North American (38.9 t) and 2,700 European salmon (8.8 t) were harvested, not taking into account any unreported catch. The sampling program was successful in adequately sampling the Greenland catch, both temporally and spatially, and provided essential input data to international stock assessment efforts, which provide stock status and catch options for subsequent fishery management. [doi:10.7289/V5028PHT (http://dx.doi.org/10.7289/V5028PHT)]
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Content Notes:by Timothy F. Sheehan, Denise Deschamps, Tara Trinko Lake, Simon McKelvey, Katie Thomas, Simon Toms, Rasmus Nygaard, Timothy L. King, Martha J. Robertson, and Niall Ó Maoiléidigh.
"October 2015."
"Web version posted October 19, 2015."
doi:10.7289/V5028PHT (http://dx.doi.org/10.7289/V5028PHT)
System requirements: Adobe Acrobat Reader.
Includes bibliographical references (page 9).
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