Adult female hamsters avoid interspecific mating after exposure to heterospecific males.
Adult female hamsters avoid interspecific mating after exposure to heterospecific males.
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DOI：
10.1007/s00265-010-0939-7
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发表时间：
2010-08-01
影响因子：
2.3
通讯作者：
Johnston RE
中科院分区：
文献类型：
--
作者：
Delbarco-Trillo J;McPhee ME;Johnston RE
当雌性与异种雄性交配时，它们通常不会产生可存活的后代。因此，有一个选择的压力，为女性，以避免种间交配。在许多物种中，雌性天生会避开异性的雄性;雌性也会在父母身上留下印记，以避免以后与异性的雄性发生性关系。然而，它是以前未知的成年女性是否可以学习歧视异性男性。我们测试的假设，成年女性以前无法避免种间交配学习，以避免这种交配后，暴露于异性的男性。叙利亚仓鼠（Mesocricetus auratus）女性以前没有接触到土耳其仓鼠（Mesocricetus brandti）男性可以区分同种和异种男性的气味，但他们与任何类型的男性交配。然而，当我们通过铁丝网屏障将成年雌性暴露于同种雄性和异种雄性8天，然后将它们依次与两种雄性配对时，雌性对同种雄性的接受性更强，对异种雄性的攻击性更强。当女性与异性男性第一和同种男性第二配对，没有女性是接受和所有的异性男性侵略。当女性与同种男性配对第一，只有43%的女性，然后向异性男性侵略。也就是说，与同种男性的相互作用可能会降低女性的能力，以适当地避免异性的男性。我们的研究第一次清楚地表明，女性可以在成年期学习，以避免种间交配，只是通过暴露于刺激，从异性男性。
When females mate with a heterospecific male, they do not usually produce viable offspring. Thus, there is a selective pressure for females to avoid interspecific mating. In many species, females innately avoid heterospecific males; females can also imprint on their parents to avoid later sexual interactions with heterospecific males. However, it was previously unknown whether adult females can learn to discriminate against heterospecific males. We tested the hypothesis that adult females previously unable to avoid interspecific mating learn to avoid such mating after being exposed to heterospecific males. Syrian hamster (Mesocricetus auratus) females not previously exposed to Turkish hamster (Mesocricetus brandti) males can discriminate between odors of conspecific and heterospecific males, but they mate with either type of male. However, when we exposed adult females to both a conspecific male and a heterospecific male through wire-mesh barriers for 8 days, and then paired them sequentially with the two males, females were more receptive to conspecific males and more aggressive to heterospecific males. When females were paired with the heterospecific male first and the conspecific male second, no female was receptive and all were aggressive to heterospecific males. When females were paired with the conspecific male first, only 43% of females were then aggressive toward the heterospecific male. That is, interactions with conspecific males may decrease a female’s ability to properly avoid heterospecific males. Our study clearly shows for the first time that females can learn during adulthood to avoid interspecific mating just by being exposed to stimuli from heterospecific males.
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影响因子：
2.4
作者：
Dukas, R
通讯作者：
Dukas, R
影响因子：
2
作者：
delBarco-Trillo, J.;Gulewicz, K.;Johnston, R. E.
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1.9
作者：
delBarco-Trillo, Javier;Gulewicz, Kara;Johnston, Robert E.
通讯作者：
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