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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
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Your Position :Home->Past Journals Catalog->2019 Vol.38 No.2

Sexual Dimorphism of Bombina maxima
Author of the article:YAO Chongxue, LYU Ting, WANG Fang, HUANG Yuan, XIAO Jian, CHEN Mingyong*
Author's Workplace:School of Life Sciences, Yunnan University, Kunming 650091, China
Key Words:Bombina maxima; sexual dimorphism; sexual selection hypothesis
Abstract:From June to August in 2018, sexual dimorphism of Bombina maxima was studied on 71 adults (47, 24♀) collected from the back hill of the Golden Temple Reservoir in Kunming, Yunnan province. By measuring the 15 morphological characteristics, such as body length, head length, head width, etc., the results showed that the average body length of male B. maxima was 53.54 mm±1.14 mm, while the female's average body length was 52.74 mm±1.45 mm. The average body length ratio of male to female was 1.015, and the heterosexual index was 0.01. According to independent sample t test results, B. maxima had no statistical significance in body length and body mass between sexes. The results of correlation test showed that all the other 13 morphological characteristics were significantly correlated with body length, except interorbital space in females. Using body length as the covariant, the covariance analysis results showed that, 7 morphological characteristics of B. maxima such as head length, snout length, diameter of lower arm, leg or hind limb length, tibia length, tibia width and length of foot and tarsal were highly statistical significance between sexes. The results of unary linear regression showed that the growth rate of male head length, snout length, diameter of lower arm, leg or hind limb length, tibial width, tibial length and length of foot and tarsal were larger than those of female. In conclusion, the sexual dimorphism of B. maxima can be explained by the sexual selection hypothesis.
2019,38(2): 194-199,205 收稿日期:2018-12-10
分类号:Q959.5;Q954
基金项目:生态环境部(原环境保护部)生物多样性保护专项:2018年两栖动物观测(云南玉龙雪山观测样区)
作者简介:姚冲学(1994-),男,硕士研究生,研究方向:动物学,E-mail:1690249310@qq.com
*通信作者:陈明勇,E-mail:mychen1108@ynu.edu.cn
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