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Male opportunistic mating increases with intensity of female sexual cannibalism in 3 web-building spiders

Current Zoology 2022年第1期68卷 113-119页

作者： Yubing MA Zeyuan HUA Aijia MAO Daiqin LI Shichang ZHANG State Key Laboratory of Biocatalysis and Enzyme Engineering of China&Centre for Behavioral Ecology&Evolution School of Life SciencesHubei UniversityWuhan 430062China Department of Biological Sciences National University of SingaporeSingapore 117543Singapore

Sexual conflict is common in animals,and female sexual cannibalism represents an extreme form of sexual *** in many species have evolved a variety of strategies to circumvent or decrease the risk of female sexual *** mating,by which a male mates with a female when she is disturbed or when she is feeding or undertaking moulting,is one of such kinds of strategies,and widely occurs in many animals,especially in ***,whether the occurrence of male opportunistic mating depends on the intensity of female sexual cannibalism remains largely *** predicted a positive correlation between *** this study,we tested this prediction by performing a series of mating trials in the laboratory using 3 species of web-building spiders with different intensities of female sexual cannibalism:Nephila pilipes,Nephilengys malabarensis,and Parasteatoda *** found that the occurrence of male opportunistic mating was positively,though not statistically significantly,correlated with the intensity of female sexual cannibalism,thus supporting our *** together,we provide evidence that male opportunistic mating may have evolved to respond to the selection pressure posed by female sexual cannibalism.

关键词： opportunistic mating sexual cannibalism web-building spider

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