S.J. Weiss (Author), Saša Marić (Author), Aleš Snoj (Author)

Abstract

We evaluate the hypothesis of no geographic structure in the Huchen (Hucho hucho), a large, predatory salmonid endemic to the Danube basin. Forty-seven individuals sampled from throughout the Hauchen's native range were genetically characterized. Extremely limited sequence diversity across 1,800 bases of mtDNA (the complete control region and partial NADH-1 subunit) evidenced by four closely related mtDNA haplotypes was found. Nonetheless, the geographic distribution of mtDNA repeats (5-10, 82-bp long copies per individual) as well as allelic diversity across two microsatellite loci indicated large-scale geographic structure between the north-western (Austria and Slovenia) distribution area and eastern Slovakia nad Ukraine) or southern (Bosnia-Herzegovina and Montenegro) sample sites. An extremly slow rate of substitution for the H. hucho mtDNA is considered along with the alternative hypotheses to explain the limited mtDNA diversity. Considering the regional genetic structure implied by our data, we advocate restrictions on the transport of brood fish of yearlings across the range of the species distribution and sale of Huchen across international boundaries. Future genetic analysis to support local conservation and monitoring efforts must focus on developing a high-resolution screen that may be applied to identify hatchery versus naturally reproduction individuals in the wild.

Keywords

ribe;salmonidi;sulec;Hucho hucho;molekularna genetika;mitohondrijska DNK;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 597.2/.5:575
COBISS: 2716808 Link will open in a new window
ISSN: 0018-8158
Views: 811
Downloads: 281
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Other data

Secondary language: English
Type (COBISS): Not categorized
Pages: str. 103-110
Volume: ǂVol. ǂ658
Issue: ǂno. ǂ1
Chronology: 2011
DOI: 10.1007/s10750-010-0453-y
ID: 1033730