Hybridization and restricted gene flow between native and introduced stocks of Alpine whitefish (Coregonus sp.) across multiple environments.
Bottom Line: Fifteen populations (N=747) were assessed for allelic variation at eight microsatellite loci and a reduced set (N=253) for variation across two mtDNA genes (cyt b and NADH-3).Although statistically congruent with inferences based on nuclear markers, mitochondrial haplotype data was not diagnostic with respect to native and non-native lineages, supporting that the Alpine region was colonized post-glacially by an admixture of mtDNA lineages, which coalesce >1 Ma.Mechanisms promoting or eroding lineage isolation are discussed, as well as a high potential to conserve native Alpine lineages despite the extensive historical use of introduced Baltic stocks.
Affiliation: Institute for Zoology, Karl-Franzens University Graz, Universitätsplatz 2, Graz, Austria.Show MeSH
Related in: MedlinePlus
Mentions: Network analysis of all published and novel haplotypes (N= 76) revealed a similarly weak clade structure as shown in Østbye et al. (2005) (Fig. 4). The largest clade (A) comprised haplotypes mainly distributed across Northern Europe (Østbye et al. 2005), whereby novel haplotypes are found in two Baltic populations (X5 and X12), two south Austrian populations (X6, X13, X17) and five north Austrian populations (X2, X8, X9) (Table S3, Supporting information).
Affiliation: Institute for Zoology, Karl-Franzens University Graz, Universitätsplatz 2, Graz, Austria.