Polymorphism of the mitochondrial cyt b gene was examined in 35 individuals of common carp and wild common carp (Cyprinus carpio L.). The fish examined represented two natural populations from Khabarovsk krai (Ac and Am), Volga wild common carp, Don wild common carp, and two common carp breeds, Ropsha (strains BB and MM) common carp and Hungarian common carp. The highest level of nucleotide (π) and haplotype (h) diversity was detected in two strains of Ropsha common carp (MM, π = 0.67%, h = 0.7; and BB, π = 0.21%, h = 0.9) and in one population (Am) of Amur wild common carp (π = 0.26%; h = 0.6). The second population of Amur wild common carp (Ac) and Hungarian common carp were characterized by lower variation estimates (π = 0.035%, h = 0.4; and π = 0.09%, h = 0.7, respectively). Genetic homogeneity was demonstrated for the populations of Volga and Don wild common carp (π = 0, h = 0). In the sample of the cyt b sequences examined, three lineages were identified. Lineages I and II united all haplotypes of the Am Amur wild common carp along with two haplotypes of Ropsha common carp, strain MM. The third lineage (III) was formed by the haplotypes of three individuals of Ropsha common carp strain MM, all representatives of Ropsha common carp strain BB, Hungarian common carp, Ac Amur wild common carp, and Don and Volga wild common carps. Statistically significant amino acid differences were observed only for the sequences, corresponding to haplotypes of lineage III, and the sum of sequences of lineages I and II. Effectiveness of different types of markers to differentiate the two subspecies of European and Amur wild common carp (C. c. carpio and C. c. haematopterus) is discussed, as well as the issues of the origin and dispersal of Russian common carp and wild common carp breeds.
Russian Journal of Genetics – Springer Journals
Published: Jan 5, 2012
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