Jianli XIONG,Xiuying LIU,Xiaomei ZHANG,et al.Sexual Dimorphism of the Jilin Clawed Salamander, Onychodactylus zhangyapingi, (Urodela: Hynobiidae: Onychodactylinae) from Jilin Province, China[J].Asian Herpetological Research(AHR),2016,7(3):220-226.[doi:10.16373/j.cnki.ahr.150057]
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Sexual Dimorphism of the Jilin Clawed Salamander, Onychodactylus zhangyapingi, (Urodela: Hynobiidae: Onychodactylinae) from Jilin Province, China
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

Issue:
2016 VoI.7 No.3
Page:
220-226
Research Field:
Publishing date:
2016-09-25

Info

Title:
Sexual Dimorphism of the Jilin Clawed Salamander, Onychodactylus zhangyapingi, (Urodela: Hynobiidae: Onychodactylinae) from Jilin Province, China
Author(s):
Jianli XIONG1*;  Xiuying LIU2;  Xiaomei ZHANG2;  Mengyun LI1 and Yao MIN1
1 College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
2 College of Agriculture, Henan University of Science and Technology, Luoyang, 471023, Henan Province, China
Keywords:
sexual size dimorphism;  clawed salamander;  morphometric;  Hynobiidae
PACS:
-
DOI:
10.16373/j.cnki.ahr.150057
Abstract:
Sexual dimorphism in size and shape is common in many organisms, and is a key evolutionary feature. In this study, we analyzed morphometric data of the Jilin clawed salamander Onychodactylus zhangyapingi, an endemic Chinese salamander, to examine sexual size and shape dimorphism. The morphometric data included 14 characteristics of 13 females and 11 males and was analyzed using univariate and multivariate methods. Our results showed that sexual dimorphism occurs not only in body size, but also in body shape. Males have a longer snout-vent length than females, a rarely reported pattern of male-biased sexual size dimorphism. Females have a larger space between the axilla and groin than males, while males have longer and larger tails compared to females. The sexual dimorphism in body size and shape can be explained by existing theories, but there is little data for the mating system, behavior, reproduction, or ecology of O. zhangyapingi, so further studies are required.

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Last Update: 2016-09-25