Genetic consequences of improved river connectivity in brown trout (Salmo trutta L.).

ABSTRACT: Fragmentation of watercourses poses a significant threat to biodiversity, particularly for migratory fish species. Mitigation measures such as fishways, have been increasingly implemented to restore river connectivity and support fish migration. The effects of such restoration efforts are typically tested using telemetry and fisheries methods, which do not fully capture the broader population movements that may have important consequences for population viability. We performed a before-and-after control-impact (BACI) study using genetic tools (SNPs) to investigate the effect of a newly implemented fishway, aiming to enhance upstream spawning migration of brown trout (Salmo trutta Linnaeus) in a reservoir with two headwater tributaries fragmented by man-made weirs. Another reservoir

SUBMITTER: Moccetti P 

PROVIDER: S-EPMC11009428 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature