Genetic evaluation of migratory fish: Implications for conservation and stocking programs.

ABSTRACT: Fish stocking programs have been implemented to mitigate the blockage of original riverbeds by the construction of hydropower dams, which affects the natural migration of fish populations. However, this method raises concerns regarding the genetic rescue of the original populations of migratory fish species. We investigated the spatial distribution of genetic properties, such as genetic diversity, population structure, and gene flow (migration), of the Neotropical migratory fish Prochilodus costatus in the Três Marias dam in the São Francisco River basin, Brazil, and examined the possible effects of fish stocking programs on P. costatus populations in this region. In total, 1,017 specimens were sampled from 12 natural sites and a fish stocking program, and genotyped for high-

SUBMITTER: Pimentel JDSM 

PROVIDER: S-EPMC7548202 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature