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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 32, No. 3, 2011, pp. 343-347
Bioline Code: zr11049
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 32, No. 3, 2011, pp. 343-347

 en Morphologic differentiation analysis for rounded caudal fin group of Oreonectes (Balitoridae) from China
Yang, Qin; Zhou, Wei; Yang, Li-Ping & Lan, Jia-Hu


Morphological characteristics were compared between three recorded species of rounded caudal fin Oreonectes and specimens collected from Guan'an of Guangxi. The results showed the Oreonectes check for this species in other resources sp. from Guan'an was distinguished from O. anphthalmus. Although some morphologic differentiations existed among Oreonectes sp., O. polystigmus, and O. platycephalus, their differentiations were not enough to distinguish between them. Consequently, we used multivariate morphometrics to determine their morphologic differentiation. Twenty-six frame characteristics and 20 general characteristics of 63 specimens were measured. The results of the Principal Component Analysis showed that Oreonectes sp. and O. polystigmus,and Oreonectes sp. and O. platycephalus occupied obviously different areas in the scatter plot. It is suggested that the specimens collected from Guan'an may be a cryptic new species of Oreonectes. However, its taxonomic status should be decided by evidence from anatomical and molecular biological studies.

Oreonectes; morphologic differentiations;methods of multivariate morphometrics

© Copyright 2011 Kunming Institute of Zoology, the Chinese Academy of Sciences
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