Monitoring Stock-Specific Abundance, Run Timing, and Straying of Chinook Salmon in the Columbia River Using Genetic Stock Identification (GSI)

作者: Jon E. Hess , John M. Whiteaker , Jeffrey K. Fryer , Shawn R. Narum

DOI: 10.1080/02755947.2013.862192

关键词: Chinook windEcologyOncorhynchusGenetic stockFisheries managementHatcheryFisheryPopulation demographicsStock (geology)Biology

摘要: AbstractGenetic stock identification (GSI) provides a method of characterizing stock-specific abundance, run timing, and straying as they pertain to the population demographics behavior both hatchery wild fish thus assists with fisheries management. In this study, tissues were collected genotyped at 13 microsatellite loci from adult Chinook Salmon Oncorhynchus tshawytscha that passed Bonneville Dam during four consecutive migration years (2004–2007). GSI methods used estimate proportions stocks in broad genetic baseline, high-density coverage across eastern Pacific Rim. The estimates abundance for interior Columbia River showed widespread decline consistent shift poor ocean conditions when study sea, but divergent stock- age-specific patterns also observed. For example, upper spring-run experienced unique net gain period, ...

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