Evaluating a multi-generational reintroduction program for threatened salmon using genetic parentage analysis
作者： Melissa L. Evans , Marc A. Johnson , Dave Jacobson , Jinliang Wang , Michael Hogansen
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摘要: Dams, utilized for hydroelectric or flood control purposes, obstruct organism dispersal and have contributed to the decline of many migratory fish populations. For threatened Chinook salmon (Oncorhynchus tshawytscha) from Willamette River Basin in Oregon, human-assisted reintroductions are being used facilitate historical habitats located above dams. However, little is known about reproductive outcomes reintroduced individuals efficacy towards goal population demographic viability. Using genetic parentage assignments 3-, 4-, 5-year-old adult recruits, we estimated fitness hatchery wild Foster Dam on South Santiam River, a tributary River. Our indicated that was highly variable, with producing range 0–40 progeny. We also detected possible trend reduced mate pairs composed ...
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