A tangled web: Comparing inter‐ and intraspecific mating dynamics in Anasa squash bugs
A tangled web: Comparing inter‐ and intraspecific mating dynamics in Anasa squash bugs
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纠结的网：比较 Anasa 南瓜虫的种间和种内交配动态
DOI：
10.1111/jeb.13965
复制
发表时间：
2022
影响因子：
2.1
通讯作者：
Miller, Christine W.
中科院分区：
文献类型：
--
作者：
Greenway, E. V;Hamel, Jennifer A.;Miller, Christine W.
生殖干扰，包括交配在内的异种个体之间的生殖相互作用，在分类群中通常被报道，但其驱动因素仍然不清楚。在同种交配系统的背景下研究种间交配--通过将个体的同种交配行为与其异种相互作用联系起来--提供了一种有效的方法来解决这种不确定性。在这里，我们比较了种间和种内交配在半自然条件下南瓜亚种及其近亲亚种间和种内交配动态。使用复制的围栏，我们在14天的时间里使用机器人摄像系统每小时一次地调查了单独标记的三和五个物种的交配行为(每个物种每种五只雄性和五只雌性)。我们发现了高水平的生殖干扰(19%的个体参与种间交配)，但大多数交配活动发生在同种之间。从事种间交配的三刺蚁雌性个体与不参与种间交配的雌性个体的孵化成功率相当。因此，在这个系统中，相对较高水平的生殖干扰可能出现在半自然条件下，作为有限的种内交配前选择和对至少一个所涉及物种的有限适应惩罚的副产品。生殖干扰(RI)是一种常见但鲜为人知的行为，它是不同物种个体之间代价高昂的生殖交互作用。在这项研究中，我们比较了种内和种间的交配动态，以更好地了解种间交配相互作用的驱动因素。我们发现了高水平的生殖干扰(19%的个体从事种间交配)，但大多数交配活动发生在同种之间。雌性Anasa三分体也是高度多性的，我们发现偶尔进行种间交配的雌性与不进行种间交配的雌性三分体的孵化成功率相当。至少，在这个系统中，相对较高水平的生殖干扰可能会作为放松的种内交配前选择的副产品出现，同时伴随着我们局部物种有限的适应惩罚。
Reproductive interference, reproductive interactions between heterospecific individuals including mating, is commonly reported across taxa, but its drivers are still unclear. Studying interspecific matings in the context of their conspecific mating system—by relating an individual's conspecific mating behaviour to its heterospecific interactions—offers a powerful approach to address this uncertainty. Here, we compare inter‐ and intraspecific mating dynamics in the squash bugAnasa tristisand its close relativeAnasa andresiiunder semi‐natural conditions. Using replicated enclosures, we surveyed the mating behaviour of individually markedA.tristisandA.andresii(five males and five females of each species per trial) at hourly intervals using a robotic camera system over a 14‐day period. We uncovered high levels of reproductive interference (19% of individuals engaged in interspecific matings), but the majority of mating activity took place between conspecifics.A.tristisfemales which engaged in interspecific matings had comparable hatching success with those which did not. Therefore, in this system, relatively high levels of reproductive interference may emerge under semi‐natural conditions as a by‐product of limited intraspecific pre‐copulatory choice paired with limited fitness penalties for at least one of the species involved.AbstractReproductive interference (RI), costly reproductive interactions between individuals of different species, is a common yet little understood behaviour. In this study, we compare inter‐ and intraspecific mating dynamics in the squash bugAnasa trististo better understand drivers of interspecific mating interactions. We uncovered high levels of reproductive interference (19% of individuals engaged in interspecific matings), but the majority of mating activity took place between conspecifics. FemaleAnasa tristiswere also highly polyandrous, and we found those which engaged in occasional interspecific matings had comparable hatching success to those which did not. In this system, at least, relatively high levels of reproductive interference likely emerged as a by‐product of relaxed intraspecific pre‐copulatory choice, paired with limited fitness penalties in our focal species.
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影响因子：
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作者对“纠结的网：比较 Anasa 南瓜虫的种间和种内交配动态”的回复
DOI：
--
发表时间：
2021
期刊：
影响因子：
--
作者：
Ginny Greenway;Jennifer A Hamel;Christine Whitney Miller
通讯作者：
Christine Whitney Miller