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Cross-Modality Effects of Prey Odour During the Intraspecific Interactions of a Mosquito-Specialist Predator
Ethology ( IF 1.7 ) Pub Date : 2014-03-24 , DOI: 10.1111/eth.12232
Fiona R Cross 1 , Robert R Jackson 1
Affiliation  

One of the predictions from evolutionary game theory is that individuals will increase their willingness (i.e., become primed) to escalate aggression when they detect the presence of a limiting resource. Here we test this prediction in the context of prey odour priming escalation decisions during vision-based encounters by Evarcha culicivora. This East African jumping spider (Salticidae) feeds indirectly on vertebrate blood by actively choosing blood-carrying female mosquitoes as preferred prey. Unlike many salticid species, it also expresses pronounced mutual mate choice. As predicted, we show here that, in the presence of odour from their preferred prey, both sexes of E. culicivora escalate during vision-based same-sex encounters. This is further evidence that the odour of blood-carrying mosquitoes is salient to this salticid. For both sexes of E. culicivora, this particular prey may be a resource that matters in the context of intrasexual selection.

中文翻译:

在蚊子专家捕食者的种内相互作用中猎物气味的跨模态效应

进化博弈论的一个预测是,当个人检测到有限资源的存在时,他们会增加他们的意愿(即准备好)以升级攻击性。在这里,我们在 Evarcha culicivora 基于视觉的遭遇期间,在猎物气味引发升级决策的背景下测试了这一预测。这种东非跳蛛(Salticidae)通过主动选择携带血液的雌性蚊子作为首选猎物,间接以脊椎动物的血液为食。与许多咸鱼不同,它也表现出明显的相互择偶选择。正如预测的那样,我们在这里表明,在存在来自其首选猎物的气味的情况下,E. culicivora 的两性在基于视觉的同性遭遇中都会升级。这进一步证明了携带血液的蚊子的气味对这种咸味来说是突出的。
更新日期:2014-03-24
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