Long-term evaluation of fitness and demographic effects of a Chinook Salmon supplementation program.

ABSTRACT: While the goal of supplementation programs is to provide positive, population-level effects for species of conservation concern, these programs can also present an inherent fitness risk when captive-born individuals are fully integrated into the natural population. In order to evaluate the long-term effects of a supplementation program and estimate the demographic and phenotypic factors influencing the fitness of a threatened population of Chinook Salmon (Oncorhynchus tshawytscha), we genotyped tissue samples spanning a 19-year period (1998-2016) to generate pedigrees from adult fish returning to Johnson Creek, Idaho, USA. We expanded upon previous estimates of relative reproductive success (RRS) to include grandparentage analyses and used generalized linear models to determine whet

SUBMITTER: Janowitz-Koch I 

PROVIDER: S-EPMC6383734 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature