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Predator-Prey Interactions between Shell-Boring Beetle Larvae and Rock-Dwelling Land Snails

机译:Shell壳甲虫幼虫与居住在陆地上的蜗牛之间的食肉动物-猎物相互作用

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摘要

Drilus beetle larvae (Coleoptera: Elateridae) are specialized predators of land snails. Here, we describe various aspects of the predator-prey interactions between multiple Drilus species attacking multiple Albinaria (Gastropoda: Clausiliidae) species in Greece. We observe that Drilus species may be facultative or obligate Albinaria-specialists. We map geographically varying predation rates in Crete, where on average 24% of empty shells carry fatal Drilus bore holes. We also provide first-hand observations and video-footage of prey entry and exit strategies of the Drilus larvae, and evaluate the potential mutual evolutionary impacts. We find limited evidence for an effect of shell features and snail behavioral traits on inter- and intra-specifically differing predation rates. We also find that Drilus predators adjust their predation behavior based on specific shell traits of the prey. In conclusion, we suggest that, with these baseline data, this interesting predator-prey system will be available for further, detailed more evolutionary ecology studies.
机译:il虫幼虫(鞘翅目:Elateridae)是蜗牛的专门捕食者。在这里,我们描述了攻击希腊的多个白化病(Gastropoda:Clausiliidae)物种的多种Drilus物种之间的天敌相互作用的各个方面。我们观察到,Drilus物种可能是兼职的或专职的白化病专家。我们绘制了克里特岛不同地理位置的捕食率,平均那里24%的空壳携带着致命的Drilus钻孔。我们还提供了第一手观察和Drilus幼虫猎物进入和退出策略的视频片段,并评估了潜在的相互进化影响。我们发现壳特征和蜗牛行为特征对种间和种内不同捕食率的影响有限的证据。我们还发现,Drilus捕食者会根据猎物的特定外壳特征来调整其捕食行为。总之,我们建议,利用这些基准数据,这个有趣的捕食者-猎物系统将可用于进一步,详细的进化生态学研究。

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