Why do males choose heterospecies females in the red spider mite?
Why do males choose heterospecies females in the red spider mite?
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为什么红蜘蛛中雄性会选择异种雌性？
DOI：
10.1007/s10493-015-9985-1
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发表时间：
2016
影响因子：
2.2
通讯作者：
Maurice W. Sabelis
中科院分区：
文献类型：
--
作者：
Yukie Sato;Heike Staudacher;Maurice W. Sabelis
在某些物种中，雄性很容易对异种雌性表现出求偶行为，甚至比自己物种的雌性更喜欢它们。这种行为通常被解释为不分青红皂白的交配，以获得更多的配偶，但可能部分解释为男性择偶偏好机制，已发展到同类女性之间的选择，作为男性偏好较大的女性导致交配与较大的异性女性。近年来，我们发现来自西班牙的伊氏叶螨（Tetranychus evansicicolated from Spain，入侵种群）的雄螨喜欢与二斑叶螨（Tetranychus evansicolated）的雌螨交配。荨麻疹比同种女性。在叶螨中，已经观察到对非亲属个体的配偶偏好。在这里，我们调查了ift。从其原产地（巴西）收集的evansimales也表现出对异种雌性的偏好。第二，研究了T. evansimales的异种雌性的亲缘关系受到它们与同种雌性的亲缘关系的影响，同种雌性与异种雌性一起提供。我们发现，异性雌性的配偶偏好存在于巴西T。evansi，这表明对异种雌性的偏好并不缺乏与异域物种的进化交配前隔离。我们发现T. evansimales表现出较低的倾向，与异性的女性交配时，替代女性是非亲属在两个异源女性线从巴西收集。而亲缘关系对男性择偶偏好的影响不显著。我们讨论解释为什么的替代假设。evansimales更喜欢与T交配。女性荨麻疹
In some species, males readily show courtship behaviour towards heterospecific females and even prefer them to females of their own species. This behaviour is generally explained by indiscriminate mating to acquire more mates, but may partly be explained by male mate preference mechanisms that have developed to choose among conspecific females, as male preference for larger females causes mating with larger heterospecific females. Recently, we found that males of the red spider mite,Tetranychus evansicollected from Spain (invasive population), prefer to mate with females of the two-spotted spider mite,T. urticaerather than with conspecific females. In spider mites, mate preference for non-kin individuals has been observed. Here, we investigated ifT. evansimales collected from the area of its origin (Brazil) also show preference for heterospecific females. Secondly, we investigated if mate preference ofT. evansimales for heterospecific females is affected by their relatedness to conspecific females which are offered together with heterospecific females. We found that mate preference for heterospecific females exists in BrazilianT. evansi, suggesting that the preference for heterospecific females is not a lack of evolved premating isolation with an allopatric species. We found thatT. evansimales showed lower propensity to mate with heterospecific females when alternative females were non-kin in the two iso-female lines collected from Brazil. However, the effect of relatedness on male mate preference was not significant. We discuss alternative hypotheses explaining whyT. evansimales prefer to mate withT. urticaefemales.