Courtship interference by neighboring males potentially prevents pairing in fiddler crab Austruca lactea
Courtship interference by neighboring males potentially prevents pairing in fiddler crab Austruca lactea
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邻近雄性的求偶干扰可能会阻碍招潮蟹的交配
DOI：
10.1007/s00265-019-2774-9
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发表时间：
2019
影响因子：
2.3
通讯作者：
Minoru Murai
中科院分区：
文献类型：
--
作者：
Fumio Takeshita;Minoru Murai
求偶干扰发生在占主导地位的雄性在雌性择偶过程中阻碍雌性对潜在雄性的评估，导致交配成功率的分布更加复杂。在这项研究中，我们描述和评估求偶干扰的地下交配的招潮蟹Austruca lactea。当一只求偶的雌性进入一只求偶的雄性的洞穴时，邻近的雄性经常会干扰雌性与雄性的互动。因此，我们确定了寻找配偶的女性，并观察他们的相互作用，直到配对。直到女性的最后决定配对的持续时间增加的干扰相邻男性的数量。当邻近的雄性干扰时，雌性更频繁地从最终选择的雄性的洞穴中重新出现。这些结果表明，求偶干扰相邻的男性延迟配对之间的求偶女性和最终选定的男性在这个物种。相邻的男性的干扰的数量增加与女性的大小，这意味着大的女性具有高繁殖力的潜力诱导相邻的男性的干扰。此外，在大约一半的情况下，干扰发生在洞穴的最后一个男性之前，最后选择的男性是干扰。因此，交配成功的分布偏向于男性相结合的吸引力（根据女性的喜好）和优势（这是与求偶干扰）在这个species.Significance statementCourtship干扰是一种类型的雄性-雄性竞争，它可能会阻碍女性的择偶。在Austruca lactea中，邻近的雄性经常干扰求偶雄性和求偶雌性之间的互动。我们证明了在这些相互作用的求爱干扰相邻的男性的效果。干扰延长了雌性的配对决策的持续时间，并暂时将雌性从最终选择的雄性的洞穴中驱逐出去。这些结果意味着这些干扰可能会潜在地阻止配对。此外，最终被选中的雄性往往成功地干扰了雌性和另一只雄性之间的求偶互动。因此，高交配成功率的雄性不仅对该物种的雌性有吸引力，而且在求偶干扰中也占主导地位。
AbstractCourtship interference occurs when dominant males hinder female assessment of prospective males during female mate choice, leading to a more complex distribution of mating success. In this study, we describe and evaluate courtship interference in underground mating of the fiddler crabAustruca lactea. When a mate-searching female enters the burrow of a courting male, neighboring males frequently interfere in the female-male interaction. We thus identified mate-searching females and observed their interactions until pairing. The duration until females’ final decision for pairing increased with the number of interferences by neighboring males. The females reappeared more frequently from the burrow of the finally selected male when neighboring males interfered. These results suggest that courtship interference by neighboring males delays pairing between the mate-searching female and the finally selected male in this species. The number of interferences by neighboring males increased with female size, implying that large females with high fecundity potential induce interference by neighboring males. Moreover, in approximately half of the cases in which interference occurred at the burrow of the immediate last male before the finally selected male, the finally selected male was the interfering one. The distribution of mating success was therefore biased toward males that combined attractiveness (according to female preference) and dominance (which is associated with courtship interference) in this species.Significance statementCourtship interference is a type of male-male competition and it may hamper female mate choice. InAustruca lactea, neighboring males often interfere in the interaction between a courting male and a mate-searching female. We demonstrated the effect of courtship interference by neighboring males in these interactions. The interferences prolonged the duration of female decision-making for pairing and temporarily expelled the female from the burrow of the finally selected male. These results imply that these interferences may potentially prevent pairing. Moreover, the finally selected males had often succeeded in interfering in the courtship interaction between the female and another male. Therefore, males with high mating success were not only attractive to the females of this species but also dominant in courtship interference.
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