Open Access

Phylogeographic study of brown trout from Serbia, based on mitochondrial DNA control region analysis

  • Saša Marić1,
  • Simona Sušnik2,
  • Predrag Simonović1 and
  • Aleš Snoj3Email author
Genetics Selection Evolution200638:411

https://doi.org/10.1186/1297-9686-38-4-411

Received: 8 September 2005

Accepted: 19 December 2005

Published: 23 June 2006

Abstract

In order to illuminate the phylogeography of brown trout (Salmo trutta) populations in the Balkan state of Serbia, the 561 bp 5'-end of mtDNA control region of 101 individuals originating from upland tributaries of the Danubian, Aegean and Adriatic drainages were sequenced and compared to corresponding brown trout sequences obtained in previous studies. Among 15 haplotypes found, 14 were considered native, representing the Danubian and Adriatic lineages of the brown trout, while one haplotype (ATcs1), found only in two individuals originating from two stocked rivers, corresponded to the Atlantic lineage and was considered introduced. Native haplotypes exhibited a strong geographic pattern of distribution: the Danubian haplotypes were strictly confined to the Danubian drainage, while the Adriatic haplotypes dominated in the Aegean and Adriatic drainages; most of the total molecular variance (69%) was attributed to differences among the drainages. Phylogenetic reconstruction, supplemented with seven haplotypes newly described in this study, suggested a sister position of the Atlantic-Danubian and Adriatic-Mediterranean-marmoratus ("southern") phylogenetic group, and pointed to the existence of a distinct clade, detected within the "southern" group. The data obtained confirmed our expectation of the existence of high genetic diversity in Balkan trout populations, and we recommend more widespread surveys covering trout stocks from the region.

Keywords

phylogeography Salmo trutta mitochondrial DNA control region Balkan Peninsula

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Authors’ Affiliations

(1)
University of Belgrade, Faculty of Biology, Institute of Zoology
(2)
Institut für Zoologie, Karl-Franzens Universität Graz
(3)
Biotechnical Faculty, Department of Animal Science, University of Ljubljana

Copyright

© INRA, EDP Sciences 2006

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