Dispersal of juvenile Barrow's goldeneyes (Bucephala islandica) mirrors that of breeding adults.

ABSTRACT: Barrow's goldeneyes across western North America have been shown to have a high degree of subpopulation independence using several data types. However, evidence for structured populations based on mitochondrial DNA, band recoveries, and tracking of adults is discordant with evidence from autosomal DNA. We used satellite tracking data from both juveniles and adults marked on natal and breeding grounds, respectively, in British Columbia, Canada to evaluate the hypothesis that male-biased juvenile dispersal maintains genetic panmixia of Pacific Barrow's goldeneyes otherwise structured by migratory movements and high winter and breeding site fidelity of adults. We found that juvenile males traveled to overwintering sites located within the range of the overwintering sites of juvenile females,

SUBMITTER: Forstner TM 

PROVIDER: S-EPMC10568906 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature