Genetic stock identification of overwintering chum salmon in the North Pacific Ocean |
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Authors: | W Tyler McCraney Edward V Farley Christine M Kondzela Svetlana V Naydenko Alexander N Starovoytov Jeffrey R Guyon |
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Institution: | 1. Auke Bay Laboratories, Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 17109 Pt. Lena Loop Road, Juneau, AK, 99801, USA 2. Pacific Research Fisheries Center, TINRO Center, 4 Shevchenko Alley, Vladivostok, 690990, Russia
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Abstract: | Understanding stock and age-specific seasonal migrations of Pacific salmon during ocean residence is essential to both the conservation and management of this important resource. Based upon 11 microsatellites assayed on 265 individuals collected aboard international research surveys during winter 2009, we found substantial differences in the age-specific origin of chum salmon (Oncorhynchus keta) in the North Pacific Ocean. Overall, Asian stocks dominated the collections, however, ocean age 1 fish were primarily of Japanese origin and ocean age 2–3+ fish were predominantly of Russian origin. These results suggest that cohorts of chum salmon stocks migrate nonrandomly in the North Pacific Ocean and adjacent seas. |
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