Male and female condition influence mating performance and sexual receptivity in two tropical fruit flies (Diptera: Tephritidae) with contrasting life histories
Male and female condition influence mating performance and sexual receptivity in two tropical fruit flies (Diptera: Tephritidae) with contrasting life histories
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DOI：
10.1016/j.jinsphys.2009.07.012
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发表时间：
2009-12-01
影响因子：
2.2
通讯作者：
Perez-Staples, D.
中科院分区：
文献类型：
--
作者：
Aluja, M.;Rull, J.;Perez-Staples, D.
最近对昆虫中广泛存在的一妻多夫现象的认识，引起了人们对理解雌性多次交配的原因以及确定影响交配率和抑制雌性再交配的因素的极大兴趣。然而，很少有人关注从女性和男性的角度来理解这个问题，特别是在可能同时影响女性再交配率的因素方面。在这里，我们报告了一项研究，旨在使用两种具有对比生活史的热带果蝇物种，确定雄性和雌性体型、饮食以及雌性接近宿主可能对交配潜伏期、概率、持续时间和雌性不应期产生的相互作用影响。在所有测试的因素中，成人饮食起着最重要的作用。与喂食低质量饮食（每三天提供蔗糖）的雄性相比，能持续获取蛋白质和蔗糖的雄性按实蝇和斜生按实蝇交配更频繁，交配时间更短，雌性不应期更长。雌性体型以及与雄性饮食的相互作用决定了雌性鲁登斯首次交配的速度。较小的雌性与低质量喂养的雄性交配比与高质量喂养的雄性交配更快，而大型雌性则没有差异，这表明如果高质量喂养的雄性歧视较小的雌性，雄性选择可能会发挥作用。交配持续时间还取决于雄性和雌性的营养状况，以及雄性饮食与雌性体型和饮食之间的相互作用。无论雄性状况如何，体型大且饲养质量高的雌性的交配时间都较短。重要的是，对于鲁登斯，雌性不应期取决于雄性体型以及雄性和雌性的营养状况，这可能表明对于该物种，雌性接受能力不仅仅取决于雄性射精的状况。对于斜纹蝽，不应期与雄性体型和饮食以及雄性饮食和寄主存在之间的相互作用有关。我们从雄性抑制雌性再交配的能力以及雌性状况对此行为的相对贡献方面讨论了我们的结果。我们还强调同时研究对具有对比生活史的物种的影响的重要性。 (C) 2009 Elsevier Ltd. 保留所有权利。
Recent recognition of widespread polyandry in insects has generated considerable interest in understanding why females mate multiple times and in identifying factors that affect mating rate and inhibit female remating. However, little attention has been paid to understanding the question from both a female and male perspective, particularly with respect to factors that may simultaneously influence female remating rates. Here, we report on a study aimed at ascertaining the possible interactive effects that male and female size and diet, and female access to a host could have on mating latency, probability, and duration and female refractory period using two tropical fruit fly species with contrasting life histories. Of all factors tested, adult diet played the most significant role. Both Anastrepha ludens and Anastrepha obliqua males which had constant access to protein and sucrose mated more often, had shorter copulations and induced longer refractory periods in females than males fed a low quality diet (sucrose offered every third day). Female size and the interaction with male diet determined how quickly female A. ludens mated for the first time. Smaller females mated sooner with low quality fed males than with high quality fed males while there was no difference for large females, suggesting that male choice may be at play if high quality fed males discriminate against smaller females. Copulation duration also depended on both male and female nutritional condition, and the interaction between male diet and female size and diet. Large and high quality fed females had shorter copulations regardless of male condition. Importantly, for A. ludens, female refractory period depended on male size and the nutritional condition of both males and females, which could indicate that for this species, female receptivity does not depend only on the condition of the male ejaculate. For A. obliqua refractory period was associated with the interaction between male size and diet and male diet and host presence. We discuss our results in terms of male ability to inhibit female remating and the relative contribution of female condition to this behavior. We also address the importance of studying effects simultaneously on species with contrasting life histories. (C) 2009 Elsevier Ltd. All rights reserved.