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黑斑侧褶蛙的两性异形和雌性繁殖特征 被引量:34

Sexual Dimorphism and Female Reproductive Characteristics in the Black-spotted Pond Frog, Pelophylax nigromaculata
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摘要 测定了黑斑侧褶蛙成体的体长、体重、头长、头宽、眼径、鼓膜径、前肢长、后肢长等形态指标以及雌体的怀卵数量。黑斑侧褶蛙雌体的体长和体重显著大于雄体。其它局部形态特征指标与体长呈正相关 ,协方差分析表明 ,雄体的鼓膜径大于雌体 ,其余形态指标不存在明显的两性差异。黑斑侧褶蛙雌体怀卵数量与体长和体重皆成正相关关系 ,表明黑斑侧褶蛙通过增加个体大小增加繁殖输出。 We measured some morphological traits, including the snout-urostyle length, body mass, head length and width, diameter of eye, diameter of tympanum, arm length and leg length, and clutch size in a population of black spotted pond frog, Pelophylax nigromaculata, from Jinhua, Zhejiang Province. Our results showed that the snout-urostyle length and body mass of adult females were significantly larger than those of adult males. All other morphological traits involved were positively correlated with the snout-urostyle length; and the ANCOVA was thus used to compare the between-sex difference of these characteristics. The analysis indicated that there were no sexual dimorphism in most of characteristics except for the diameter of tympanum. In P.nigromaculata, clutch size was closely correlated with the snout-urostyle length and body mass,by indicating that the female frogs could increase reproductive outputs increasing body sizes.
出处 《动物学杂志》 CAS CSCD 北大核心 2002年第4期14-18,共5页 Chinese Journal of Zoology
关键词 黑斑侧褶蛙 两性异形 雌性繁殖特性 Pelophylax nigromaculata Sexual dimorphism Clutch size
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参考文献17

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