A Bruce Effect in Wild Geladas
A Bruce Effect in Wild Geladas
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DOI：
10.1126/science.1213600
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发表时间：
2012-03-09
期刊：
影响因子：
56.9
通讯作者：
Beehner, Jacinta C.
中科院分区：
文献类型：
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作者：
Roberts, Eila K.;Lu, Amy;Beehner, Jacinta C.
众所周知，雌性啮齿动物在接触不熟悉的雄性动物后会终止妊娠（“布鲁斯效应”）。虽然实验室的支持比比皆是，但缺乏在自然条件下布鲁斯效应的直接证据。在这里，我们报告一个强大的布鲁斯效应在野生灵长类动物，狒狒（狮尾猿）。雌性狮尾狒狒会在雄性狮尾狒狒的统治地位被取代后的几周内终止80%的妊娠。此外，关于生育间隔的数据表明，终止妊娠对女性的健康有益，否则她们的后代将容易受到杀虫剂的影响。综上所述，数据支持的假设，布鲁斯效应可以是一种适应策略的女性。
Female rodents are known to terminate pregnancies after exposure to unfamiliar males ("Bruce effect"). Although laboratory support abounds, direct evidence for a Bruce effect under natural conditions is lacking. Here, we report a strong Bruce effect in a wild primate, the gelada (Theropithecus gelada). Female geladas terminate 80% of pregnancies in the weeks after a dominant male is replaced. Further, data on interbirth intervals suggest that pregnancy termination offers fitness benefits for females whose offspring would otherwise be susceptible to infanticide. Taken together, data support the hypothesis that the Bruce effect can be an adaptive strategy for females.