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Molecular phylogeny of three subspecies of common carp Cyprinus carpio, based on sequence analysis of cytochrome b and control region of mtDNA

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Abstract

The complete cytochrome b and the control region of mtDNA (about 2070 bp in total) of 10 strains belonging to three subspecies of the common carp, including three wild subspecies (the Yangtze River wild common carp –Cyprinus carpio haematopterus, Yuanjiang River wild common carp –Cyprinus carpio rubrofuscus and Volga River wild common carp –Cyprinus carpio carpio) and seven domestic strains (Xingguo red carp, Russian scattered scaled mirror carp, Qingtian carp, Japanese Koi carp, purse red carp, Big-belly carp, German mirror carp) were sequenced. Phylogenetic analysis indicated that the 10 strains form three distinct clades, corresponding to C. c. haematopterus, C. c. rubrofuscus and C. c. carpio respectively. Purse red carp, an endemic domestic strain in Jiangxi province of China, showed a higher evolution rate in comparison with the other strains of C. c. haematopterus, most probably because of intensive selection and a long history of domestication. Base variation ratios among the three subspecies varied from 0.78% (between C. c. haematopterus and C. c. rubrofuscus) to 1.47%(between C. c. carpio and C. c. rubrofuscus). The topography of the phylogenetic tree and the geographic distribution of three subspecies closely resemble each other. The divergence time between C. c. carpio and the other two subspecies was estimated to be about 0.9 Myr and about 0.5 Myr between C. c. haematopterus and C. c. rubrofuscus. Based on phylogenetic analysis, C. c. rubrofuscus might have diverged from C. c. haematopterus.
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Keywords: Cyprinus carpio; control region of mtDNA; cytochrome b; phylogeny; subspecies

Document Type: Research Article

Affiliations: State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China

Publication date: 01 November 2004

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