Alternative life-history strategy contributions to effective population size in a naturally spawning salmon population.

ABSTRACT: Alternative life-history tactics are predicted to affect within-population genetic processes but have received little attention. For example, the impact of precocious males on effective population size (N _e) has not been quantified directly in Pacific salmon Oncorhynchus spp., even though they can make up a large percentage of the total male spawners. We investigated the contribution of precocial males ("jacks") to N _e in a naturally spawning population of Coho Salmon O. kisutch from the Auke Creek watershed in Juneau, Alaska. Mature adults that returned from 2009 to 2019 (~8000 individuals) were genotyped at 259 single-nucleotide polymorphism (SNP) loci for parentage analysis. We used demographic and genetic methods to estimate the effecti

SUBMITTER: King E 

PROVIDER: S-EPMC10445090 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature