• 首页关于本刊期刊订阅编委会作者指南过刊浏览
姚冲学,王智红,王方,蒋桂莲,吕婷,汤永晶,陈明勇.2020.饰纹姬蛙的两性异形及雌性繁殖能力.动物学杂志,55(3):317-322.
饰纹姬蛙的两性异形及雌性繁殖能力
Sexual Dimorphism and Female Reproductive Ability of Microhyla fissipes
投稿时间:2019-09-10  修订日期:2020-05-04
DOI:10.13859/j.cjz.202003005
中文关键词:  饰纹姬蛙  两性异形  繁殖能力  怀卵量
英文关键词:Microhyla fissipes  Sexual dimorphism  Reproductive ability  Brood amount
基金项目:第二次全国重点保护野生动植物资源调查项目(No. 2130211)
作者单位E-mail
姚冲学 云南大学生态学与环境学院 昆明 650091 1690249310@qq.com 
王智红 云南大学生态学与环境学院 昆明 650091 1014755340@qq.com 
王方 云南大学生态学与环境学院 昆明 650091 1743176314@qq.com 
蒋桂莲 云南大学生态学与环境学院 昆明 650091 376056586@qq.com 
吕婷 云南大学生态学与环境学院 昆明 650091 2621539368@qq.com 
汤永晶 云南大学生态学与环境学院 昆明 650091 1747096218@qq.com 
陈明勇 云南大学生态学与环境学院 昆明 650091 mychen1108@ynu.edu.cn 
摘要点击次数: 58
全文下载次数: 42
中文摘要:
      用采自云南省西双版纳傣族自治州勐腊县的53只(28 ♂♂,25 ♀♀)成体饰纹姬蛙(Microhyla fissipes),测量全部个体的体长、头长、头宽、体重等16项形态特征和雌体怀卵量数据,通过独立样本t检验和协方差检验该物种所有形态特征的两性差异,进而采用线性回归方法分析雌雄成体局部形态特征与体长的相关性,以及雌性成体怀卵量与局部形态特征的相关性。结果表明,饰纹姬蛙平均体长雌性为(25.08 ± 0.40)mm,雄性为(24.78 ± 0.31)mm,体长和体重在雌雄两性间差异不显著(P > 0.05),两性个体大小基本同形。该蛙的所有局部形态特征与体长均存在极显著正相关性(P < 0.01);雌雄两性间只在头宽和前臂及手长这两个形态特征上存在显著差异(P < 0.05),且随体长的增大其生长速率也存在显著差异。雌性成体的怀卵量与体长、体重、眼间距、前臂宽、胫宽和跗足长均存在显著正相关性(P < 0.05),且与体重存在极显著正相关性(P < 0.01)。分析认为,饰纹姬蛙成体两性异形主要表现在头宽和前臂及手长,与生存竞争中对食物的获取能力及雄性争夺交配权的成功率有关;而雌性个体可以通过增加体长和体重,相应地增加腹腔容量来提高繁殖输出,该结果符合生育力选择假说。
英文摘要:
      After 53 (28 ♂♂, 25 ♀♀) adults of the Ornamented Pygmy Frog (Microhyla fissipes) had been collected from Mengla County of Xishuangbanna Dai Autonomous Prefecture in Yunnan Province, China, 16 morphological characteristics of them, such as body length, head length, head width, body mass and female’s brood amount had been measured. With the independent sample t test and covariance method, sexual differences of the all morphological characteristics of this frog have been tested, and the correlation between local morphological characteristics with body length of male and female adults, also the brood amount with the local morphological characteristics of female adults have been also analyzed by the linear regression analysis method. The results showed that, the average body length of female M. fissipes was 25.08 ± 0.40 mm, and the male’s was 24.78 ± 0.31 mm, there was no significant difference in body length and body mass between males and females (P > 0.05, Table 1), the size of male and female individuals was basically identical. All local morphological features were extremely significant positively correlated with body length (P < 0.01, Table 1). Length of lower arm and hand, and hand length were significantly different between males and females (P < 0.05, Table 1), there were also significant differences with the growth rate of body length. Separately, the brood amount was positively correlated with body length, body mass, inter-orbital space, diameter of lower arm, tibia-width, length of foot and tarsus (P < 0.05, Table 2), and extremely significant positive correlation with body mass (P < 0.01, Table 2). Our analyses suggest that, the sexual dimorphism of M. fissipes adults between female and male were mainly manifested in the head width, forearm length and hand length, which possibly related to the ability to obtain food for survivaling, and the success rate of males in competing for mating rights. However, individuals of female may increase their reproductive output by increasing their body length and body weight correspondingly increasing abdominal volume, which was consistented with the fecundity selection hypothesis.
附件
查看全文  查看/发表评论  下载PDF阅读器