东北林蛙的两性异形和抱对个体的形态相关性  

Sexual Dimorphism and Morphological Correlates of Mating Individuals in the Frog Rana dybowskii

作　　者：刘鹏[1] 刘恒[1] 张德成[1] 赵文阁[1] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,哈尔滨150025

出　　处：《动物学杂志》2013年第2期188-192,共5页Chinese Journal of Zoology

基　　金：黑龙江省青年科学基金项目(No.QC2010035);黑龙江省教育厅科学技术研究项目(No.12511162);哈尔滨师范大学科技发展预研项目(No.11XYG-04);哈尔滨师范大学科技创新团队和人才工程团队项目

摘　　要：2012年4月,在吉林省长白山地区,对正在抱对的30对东北林蛙(Rana dybowskii)成体的体长、头长、头宽、前肢长和后肢长进行测量,使用统计学的方法分析抱对个体形态特征的两性异形及配偶间形态特征的相关性。结果表明,两性的所有局部形态特征均与其体长呈显著正相关,其中,前肢长和后肢长随体长的增长速率在两性间无显著差异,而头长和头宽随体长的增长速率存在显著差异。雌性成体显著大于雄性成体;特定体长下雄性的前肢显著大于雌性,其他局部特征没有显著的两性差异;雌性个体与抱对的雄性个体的后肢长呈显著正相关,其余形态特征两性间无相关性。因此,在东北林蛙的配偶选择中,雌性对雄性形态特征的选择与两性异形的形成无显著的相关性。Thirty pairs of mating Rana dybowskii were collected from Changbaishan Mount of Jilin Province in April, 2012 to study sexual dimorphism and morphological correlates of mate choice. Measurements taken for each individual included snout-urostyle length （SUL）, head length （HL）, head width （HW）, fore-limb length （FLL） and hind-limb length （HLL）. All morphological variables measured were positively correlated with SUL in both sexes. The rates at which FLL and I-ILL increased with SUL did not differ between the sexes, whereas the rates at which HL and HW increased with SUL differed between the sexes. The mean SUL was greater in females than in males, FLL was greater in males than in females after accounting for variation in SUL, and other morphological traits did not differ between the sexes. Our data also showed that there were no significant correlation in most examined morphological traits of paired female and male except HLL. Therefore, the formation of sexual dimorphism in R. dybowskii were not significantly correlates with morphological traits of mate choice.

关 键 词：东北林蛙 形态特征 两性异形 抱对 配偶选择 

分 类 号：Q954[生物学—动物学]