Genetic structure of important resident brown trout breeding lines in Poland

• Published in: Journal of applied genetics Vol. 61; no. 2; pp. 239 - 247
• Main Authors: Bernas, Rafal, Was-Barcz, Anna
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-05-2020; Springer; Springer Nature B.V
• Subjects: Alleles; Animal Genetics and Genomics; Animal Genetics • Original Paper; Animals; Aquaculture industry; Biomedical and Life Sciences; Breeding; Fish hatcheries; Fish populations; Fishes; Genetic diversity; Genetic markers; Genetic research; Genetic structure; Genetic Variation - genetics; Genetics, Population; Human Genetics; Hybridization; Hybridization, Genetic - genetics; Life Sciences; Metapopulations; Microbial Genetics and Genomics; Microsatellite Repeats - genetics; Microsatellites; Plant Genetics and Genomics; Poland; Populations; River basins; Rivers; Salmo trutta; Trout; Trout - genetics; Poland; Atlantic Ocean; Baltic Sea; Brown trout; Hatchery lines; Stocking
• ISSN: 1234-1983; 2190-3883
• DOI: 10.1007/s13353-020-00548-6

The history of brown trout
Salmo trutta
L. stocking has long tradition in the European Union and other countries. Hundreds of hatchery facilities on continent have artificial broodstocks used for enhancement of neighbouring and also geographically far river basins. These practices have substantial effect on wild brown trout populations. To illuminate this phenomenon, eleven hatchery stocks and wild populations from northern Poland and Carpathian region were analysed using 13 microsatellite markers. Obtained results revealed high genetic diversity between studied stocks and clear differentiation between northern and southern populations and hybridization between these two major clads. As a recommendation, the principle of treating regions as metapopulations should be applied, which, in the case of Poland, means using the division of the northern and southern genetic lines that were revealed in the present study.