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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->2020 Vol.39 No.5

Multivariate Morphometric Analysis of Gymnocypris potanini in Different River Drainages
Author of the article:LIANG Siqian1, YANG Kun2, LI Shu1, WANG Xiaodong1, SONG Zhaobin1*
Author's Workplace:1. Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China;
2. Institute of Ecology, China West Normal University, Nanchong, Sichuan Province 637009, China
Key Words:Gymnocypris potanini; G. potanini firmispinatus; multivariate analysis; morphological differentiation
Abstract:To investigate the morphological differences of Gymnocypris potanini in different river drainages, 206 individuals collected from the Minjiang, Dadu, Yalong and Jinsha rivers were compared and analyzed by morphological measurement and multivariate analysis. There was no significant difference in the number of outer gill rakers and dorsal of the first gill arch, pectoral, ventral and anal fins among the specimens from different river drainages. Principal component analysis showed that the head (snout tip to origin of pectoral fin/body length, snout tip to posterior point of occipital/body length, head length/body length) and tail eigenvalues (dorsal origin of caudal fin to origin of anal fin/body length, origin of anal fin to ventral origin of caudal fin/body length) had the greatest influence on the morphology. Discriminant analysis showed that specimens from the Minjiang River and the Anning River (a tributary of the Yalong River) were distinctly separated from those of other rivers. The populations from the Minjiang River were clustered as one clade, and the other populations from the Jinsha, Dadu and Yalong rivers were clustered into another clade. The populations from the Jinsha River were clustered together, and the ones from the Dadu and Yalong rivers were clustered according to the geographical distance among them. Moreover, the G. potanini subspecies could be discriminated based on the length of anal scale row. The specimens from the Dadu and Yalong river drainages should be identified as G. potanini firmispinatus.
2020,39(5): 500-507 收稿日期:2020-01-24
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