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Genetic architecture of trout from Albania as revealed by mtDNA control region variation

Aleš Snoj1, Saša Marić2, Patrick Berrebi3, Alain J Crivelli4, Spase Shumka5 and Simona Sušnik1*

Author Affiliations

1 University of Ljubljana, Department of Animal Science, Groblje 3, SI-1230 Domžale, Slovenia

2 University of Belgrade, Faculty of Biology, Institute of Zoology, Studentski trg 16, 11001 Belgrade, Serbia

3 Institut des Sciences de l'Evolution, UMR CNRS/UM2 5554, Université Montpellier II, cc065, 34095 Montpellier cedex 05, France

4 Station biologique de la Tour du Valat, Le Sambuc, 13200 Arles, France

5 Agriculture University Tirana, Inter faculty Department, Tirana, Albania

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Genetics Selection Evolution 2009, 41:22  doi:10.1186/1297-9686-41-22

Published: 2 February 2009

Abstract

To determine the genetic architecture of trout in Albania, 87 individuals were collected from 19 riverine and lacustrine sites in Albania, FYROM and Greece. All individuals were analyzed for sequence variation in the mtDNA control region. Among fourteen haplotypes detected, four previously unpublished haplotypes, bearing a close relationship to haplotypes of the Adriatic and marmoratus lineages of Salmo trutta, were revealed. Ten previously described haplotypes, characteristic of S. ohridanus, S. letnica and the Adriatic and Mediterranean lineages of S. trutta, were also detected. Haplotypes detected in this study were placed in a well supported branch of S. ohridanus, and a cluster of Mediterranean – Adriatic – marmoratus haplotypes, which were further delimited into three subdivisions of Mediterranean, marmoratus, and a previously non-described formation of four Adriatic haplotypes (Balkan cluster). Haplotypes of the Balkan cluster and the other Adriatic haplotypes, do not represent a contiguous haplotype lineage and appear not to be closely related, indicating independent arrivals into the Adriatic drainage and suggesting successive colonization events. Despite the presence of marmoratus haplotypes in Albania, no marbled phenotype was found, confirming previously reported findings that there is no association between this phenotype and marmoratus haplotypes.