In the paper, we explored the intra- and interspecific evolutionary variation among species of Camallanus collected from different fish species in various regions of China. We determined the internal transcribed spacers of ribosomal DNA (ITS rDNA) sequences of these nematodes. The divergence (uncorrected p-distance) of ITS1, ITS2, and ITS rDNA data sets confirmed 2 valid species of Camallanus in China, i.e., C. cotti and C. hypophthalmichthys. The 2 species were distinguished not only by their different morphologies and host ranges but also by a tetranucleotide microsatellite (TTGC)n present in the ITS1 region of C. cotti. Phylogenetic analyses of the nematodes disclosed 2 main clades, corresponding to different individuals of C. cotti and C. hypophthalmichthys from different fish species in various geographical locations, although the interior nodes of each clade received poor support.
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June 2008
SYSTEMATICS-PHYLOGENETICS|
June 01 2008
Molecular Characteristics of Camallanus Spp. (Spirurida: Camallanidae) in Fishes from China Based On its rDNA Sequences
Shan Gong Wu;
Shan Gong Wu
State Key Laboratory of Freshwater Ecology and Biotechnology, and Fish Immunology and Parasitology Group of the Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, People's Republic of China. gtwang@ihb.ac.cn
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Gui Tang Wang;
Gui Tang Wang
State Key Laboratory of Freshwater Ecology and Biotechnology, and Fish Immunology and Parasitology Group of the Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, People's Republic of China. gtwang@ihb.ac.cn
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Bing Wen Xi;
Bing Wen Xi
State Key Laboratory of Freshwater Ecology and Biotechnology, and Fish Immunology and Parasitology Group of the Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, People's Republic of China. gtwang@ihb.ac.cn
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Dian Gao;
Dian Gao
State Key Laboratory of Freshwater Ecology and Biotechnology, and Fish Immunology and Parasitology Group of the Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, People's Republic of China. gtwang@ihb.ac.cn
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Pin Nie
Pin Nie
State Key Laboratory of Freshwater Ecology and Biotechnology, and Fish Immunology and Parasitology Group of the Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei Province, People's Republic of China. gtwang@ihb.ac.cn
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J Parasitol (2008) 94 (3): 731–736.
Citation
Shan Gong Wu, Gui Tang Wang, Bing Wen Xi, Dian Gao, Pin Nie; Molecular Characteristics of Camallanus Spp. (Spirurida: Camallanidae) in Fishes from China Based On its rDNA Sequences. J Parasitol 1 June 2008; 94 (3): 731–736. doi: https://doi.org/10.1645/GE-1219.1
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