Effects of stocking on the genetic structure of brown trout,Salmo trutta,in Central Europe inferred from mitochondrial and nuclear DNA markers |
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| Authors: | J KOHOUT I JA?KOVÁ I PAPOU?EK A ?EDIVÁ V ?LECHTA |
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| Institution: | 1. Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, v.v.i., Liběchov, Czech Republic;2. Faculty of Fisheries and Protection of Waters, University of South Bohemia in ?eské Budějovice, Vodňany, Czech Republic;3. Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia;4. Faculty of Agriculture, University of South Bohemia in ?eské Budějovice, ?eské Budějovice, Czech Republic;5. Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Brno, Czech Republic;6. Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic |
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| Abstract: | Abstract Stocking has had a considerable effect on wild brown trout, Salmo trutta L., populations throughout Europe. To elucidate this impact and to outline further management strategies, the genetic structure of 25 wild populations and five hatchery stocks from Czech Republic and Slovakia were analysed using mitochondrial (control region) and nuclear DNA (microsatellites, LDH‐C1*) markers. Stocking practices have caused massive hybridisation between the Atlantic and Danube brown trout strains in the central Danube basin and have lead to a loss of among‐population divergence in Slovakia and the eastern part of Czech Republic. Comparison with studies from neighbouring countries revealed substantial differences in haplotype, allele frequencies and genetic diversity across Central Europe. Differences in stocking management and origin of breeding stocks appear to be crucial factors for the spatial variability of the genetic structure of brown trout. |
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| Keywords: | control region Danube introgression LDH‐C1* microsatellites population genetics |
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