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Phylogenetic Analysis of Channa Genus based on Morphological Characters and X-Ray Imaging

Phylogenetic Analysis of Channa Genus based on Morphological Characters and X-Ray Imaging

Aiguo Zhou1,2,4, Shaolin Xie1,2, Zhuolin Sun1,2, Yongyong Feng1,2, Shulin Liu1,2, Di Sun1,2, Yanfeng Chen3 and Jixing Zou1,2*

1Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
2Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
3School of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
4Qingyuan North River Fishery Science Institute, Qingyuan 511510, Guangdong, China

*      Corresponding author: zoujixing@scau.edu.cn

ABSTRACT

Classification of the dispute is in existence among the Channa genus. In present study, we measured 11 countable characteristics and 29 measurable characteristics of 89 individuals and performed morphological analysis among five Channa species. The principal component analysis showed that the cumulative contribution rate of five principal components reached 78.928%, and tail shank (TS) and head length (HL) were the main contributors to the first principal component (35.435% contribution rate). The scatter diagram of the principal component analysis showed that white type and Channa argus hadcommon overlap, while the other three Channa species were grouped together. Cluster analysis showed that all Channa species can be completely separated, and O. argus var Kimnra and C. argus clustered together. The discriminant analysis showed that O. argus var Kimnra and C. argus were 41.7% and 58.3% similar to each other, respectively. X-ray photography revealed that O. argus var Kimnra and C. argus have similar forms, but they are far from C. asiatica. Therefore, O. argus var Kimnra and C. argus have a close relationship with no significant morphological differences.
 

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Pakistan Journal of Zoology

June

Vol. 54, Iss. 3, Pages 1001-1500

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