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Comparative mtDNA sequence (control region, ATPase 6 and NADH‐1) divergence in Hucho taimen (Pallas) across four Siberian river basins
Author(s) -
Froufe E.,
Alekseyev S.,
Knizhin I.,
Weiss S.
Publication year - 2005
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.0022-1112.2005.00807.x
Subject(s) - biology , mitochondrial dna , phylogeography , ecology , mtdna control region , genetic divergence , zoology , interspecific competition , nucleotide diversity , haplotype , fishery , genetics , gene , phylogenetics , genetic diversity , population , demography , sociology , genotype
Hucho taimen from eight populations spanning four drainage basins (Amur, Lena, Enisei and Khatanga) were analysed for nucleotide sequence variation across three mitochondrial genes (ATP6, NADH‐1 and control region). Samples of H. hucho , Brachymystax lenok (sharp‐snouted and blunt‐snouted forms) and Parahucho perryi were also included for comparison. Nucleotide variation across a total of 1826 base pairs in H. taimen revealed shared haplotypes between the Amur and Lena basins, further supporting a previous hypothesis of late to post‐Pleistocene hydrological exchange between these now disjunct basins. In contrast to an earlier study using the control region alone, clear phylogeographic structure was seen at a large geographic scale, reflected by two phylogroups, one corresponding to the Amur and Lena basins, and the other to the Enisei and Khatanga basins. Comparative rates of divergence revealed considerably faster and less heterogeneous substitution rates for the two coding genes, especially at interspecific levels compared to the mtDNA control region.