Reduced relative fitness in hatchery-origin Pink Salmon in two streams in Prince William Sound, Alaska.

ABSTRACT: Previous studies generally report that hatchery-origin Pacific Salmon (Oncorhynchus spp.) have lower relative reproductive success (RRS) than their natural-origin counterparts. We estimated the RRS of Pink Salmon (O. gorbuscha) in Prince William Sound (PWS), Alaska using incomplete pedigrees. In contrast to other RRS studies, Pink Salmon have a short freshwater life history, freshwater habitats in PWS are largely unaltered by development, and sampling was conducted without the aid of dams or weirs resulting in incomplete sampling of spawning individuals. Pink Salmon released from large-scale hatchery programs in PWS have interacted with wild populations for more than 15 generations. Hatchery populations were established from PWS populations but have subsequently been m

SUBMITTER: Shedd KR 

PROVIDER: S-EPMC8965367 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature