Can males detect the strength of sperm competition and presence of genital plugs during mate choice
Can males detect the strength of sperm competition and presence of genital plugs during mate choice
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雄性在择偶过程中能否检测到精子竞争的强度和生殖器插头的存在
DOI：
10.1093/beheco/aru045
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发表时间：
2014
影响因子：
2.4
通讯作者：
M.E. Herberstein
中科院分区：
文献类型：
--
作者：
Zimmer S.M;Schneider J.M. ;M.E. Herberstein
由于精子竞争的威胁，雌性的生殖状态对雄性的交配策略有很强的选择性影响，这可以解释为什么雄性更喜欢处女而不是交配过的雌性。然而，在雌性多交配率和交配塞的交配系统中，雄性不仅要对风险做出反应，还要对精子竞争水平做出反应，并对交配塞的干扰敏感。在圆网蜘蛛argiope keyserlingi中，雌性拥有成对的精子储存器官，有助于将不同雄性的精子分开储存。雄性由于其配对生殖器（须肢）的残缺，只能交配2次。通过二元选择实验，我们测试了不同交配状态的雄性是否能够区分与1个或2个雄性交配的雌性，以及单一交配的雄性是否能够区分具有匹配或不匹配处女生殖器开口的单一交配雌性。此外，我们还研究了雄性是否通过在其附近提供不同质量的雌性来适应精子竞争的强度。我们的研究结果表明，雄性对精子竞争水平很敏感，并且更喜欢单交配的雌性而不是双交配的雌性。然而，他们未能识别出处女生殖器开口与其未使用的须肢相匹配的单交配雌性，这是由于它们固定的同侧授精所必需的。令人惊讶的是，雄性从来不会与同一雌性交配两次，而不受周围雌性质量的影响。这表明，与不同的雌性交配所带来的好处大于通过两次交配来垄断雌性的好处。
Female reproductive status can have strong selective effects on male mating strategies due to the threat of sperm competition, which may explain why males prefer virgin over mated females. However, in mating systems with female multiple mating rates and mating plugs, males should not only respond to the risk but also to the level of sperm competition and should be sensitive to the interference from mating plugs. In the orb-web spiderArgiope keyserlingi, females possess paired sperm-storage organs facilitating separate sperm storage from different males. Males are limited to 2 copulations due to mutilation of their paired genitals (pedipalps). By conducting binary choice experiments, we tested whether males of different mating status can distinguish between females that mated with 1 or 2 males and whether single-mated males discriminate between single-mated females with matched or unmatched virgin genital openings. Furthermore, we investigated whether males adapt their mating strategies to the intensity of sperm competition by providing males with varying qualities of females in their immediate vicinity. Our results demonstrated that males are sensitive to the level of sperm competition and preferred single-mated females over double-mated females. However, they failed to identify single-mated females whose virgin genital opening matched their unused pedipalp, which is required due to their fixed ipsilateral insemination. Surprisingly, males never mated twice with the same female independently of the quality of surrounding females. This suggests that the benefits from searching and mating with a different female are greater than the benefits of monopolizing the female by mating twice with her.
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影响因子：
3.7
作者：
Zimmer SM;Welke KW;Schneider JM
通讯作者：
Schneider JM
当雌性与三名雄性交配时，最后雄性精子的优先权被打破
DOI：
10.1098/rspb.1994.0127
发表时间：
1994
期刊：
Proceedings of the Royal Society of London. Series B: Biological Sciences
影响因子：
--
作者：
J. A. Zeh;D. W. Zeh
通讯作者：
D. W. Zeh
具有一次性生殖器的雄性的择偶：雌性生育力的重要性有限
影响因子：
2.5
作者：
K. Schulte;G. Uhl;J. Schneider
通讯作者：
J. Schneider
影响因子：
2.5
作者：
Barry, Katherine L.;Holwell, Gregory I.;Herberstein, Marie E.
通讯作者：
Herberstein, Marie E.
雌性在食人蜘蛛中奖励竞争雄性的求爱
影响因子：
2.3
作者：
J. Stoltz;D. Elias;M. Andrade
通讯作者：
M. Andrade