Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population.

ABSTRACT: Maintaining standing genetic variation is a challenge in human-dominated landscapes. We used genetic (i.e., 16 short tandem repeats) and morphological (i.e., length and weight) measurements of 593 contemporary and historical brown trout (Salmo trutta) samples to study fine-scale and short-term impacts of different management practices. These had changed from traditional breeding practices, using the same broodstock for several years, to modern breeding practices, including annual broodstock replacement, in the transnational subarctic Pasvik River. Using population genetic structure analyses (i.e., Bayesian assignment tests, DAPCs, and PCAs), four historical genetic clusters (E2001A-D), likely representing family lineages resulting from different crosses, were found in zone E. These groups

SUBMITTER: Klutsch CFC 

PROVIDER: S-EPMC8405680 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature