期刊
ANIMAL BIOLOGY
卷 61, 期 2, 页码 225-238出版社
BRILL ACADEMIC PUBLISHERS
DOI: 10.1163/157075511X570312
关键词
Anurans; sperm competition; multiple-male mating; allometry; relative testis size
类别
资金
- Key Scientific Research Foundation of China West Normal University [10A004]
- Scientific Research Foundation of Sichuan Provincial Education Department [09ZC010]
- Scientific Research Foundation of China West Normal University [09B001]
Comparative studies of the relative testes size in animals show that promiscuous species have relatively larger testes than monogamous species. Sperm competition favours the evolution of larger ejaculates in many animals they give bigger testes. In the view, we presented data on relative testis mass for 17 Chinese species including 3 polyandrous species. We analyzed relative testis mass within the Chinese data set and combining those data with published data sets on Japanese and African frogs. We found that polyandrous foam nesting species have relatively large testes, suggesting that sperm competition was an important factor affecting the evolution of relative testes size. For 4 polyandrous species testes mass is positively correlated with intensity (males/mating) but not with risk (frequency of polyandrous matings) of sperm competition. (C) Koninklijke Brill NV, Leiden, 2011.
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