Mitochondrial haplotype diversity among Portuguese brown trout Salmo trutta L. populations: relevance to the post-Pleistocene recolonization of northern Europe

• Type: Article in International Scientific Journal
• Date: 2000

Authors

weiss, s (Author) Other; antunes, a (Author) Other; schlotterer, c (Author) Other; alexandrino, p (Author) FCUP

Journal

Title: Molecular Ecology

Vol. 9

Pages: 691-698

ISSN: 0962-1083

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 59 Citations

Scopus - 61 Citations

Scientific classification

FOS: Natural sciences > Biological sciences

Other information

Authenticus ID: P-000-ZZ4

DOI: 10.1046/j.1365-294x.2000.00910.x

Abstract (EN): Mitochondrial haplotype diversity in seven Portuguese populations of brown trout, Salmo trutta L., was investigated by sequencing the 5' end of the mitochondrial DNA (mtDNA) control region. Five new haplotypes were described for this species, each two to three mutational steps distant from the common north Atlantic haplotype. Significant population subdivision of mtDNA haplotypes was also apparent. Based on these results, as well as on published data describing the distribution of both mtDNA haplotypes and allozyme alleles throughout Europe, the postglacial recolonization of northern Europe was re-evaluated. It is argued that the available data do not support the contribution of two major glacial refugia (southwest Atlantic and Ponto-Caspian Basin) to this postglacial recolonization, as proposed in a recently published model. The unique genetic architecture of Portuguese brown trout within the Atlantic-basin clade of this species represents a highly valuable genetic resource that should be protected from introgression with nonendemic strains of hatchery fish.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8