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Evolution and diversity of cuticular hydrocarbon profiles in cleptoparasitic and parasitoid cuckoo wasps and their significance for chemical mimicry

窃寄生和寄生杜鹃黄蜂表皮碳氢化合物谱的演化和多样性及其对化学拟态的意义

基本信息

批准号：
208774003
负责人：
Professor Dr. Oliver Niehuis
金额：
--
依托单位：
Lehrstuhl für Tierökologie und Tropenbiologie (Zoologie III)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2012
资助国家：
德国
起止时间：
2011-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/208774003?language=en
关键词：
Evolution diversity cuticular hydrocarbon profiles

项目摘要

The cuticle of insects is coated with a layer of waxes that serves as protection against desiccation. The non-polar fraction of these waxes are cuticular hydrocarbons (CHCs). These differ between most species and often between sexes, and insects use them as cues and signals. Given the importance of CHCs for insects, it surprises that very little is known about how CHC profiles evolve. So far, few studies have found a potential correlation between CHC profiles of insects and environmental factors, such as temperature and moisture. Our research project aims to elucidate whether or not positive Darwinian selection on females to mimic the CHC profile of their host is a major force that drives the evolution of CHC profiles in a group of cleptoparasitic and parasitoid insects: cuckoo wasps (Hymenoptera: Chrysididae). We combine behavioral experiments with a phylogeny-based statistical analysis that compares CHC profiles of cuckoo wasps and their distantly related hosts. The behavioral experiments are meant to demonstrate whether or not host-parasite CHC profile similarity is causally interrelated with the host’s behavior against cleptoparasites and parasitoids. The results of our research will for the first time allow for quantification of the malleability and adaptability of CHC profiles in parasitic insects.

昆虫的表皮上覆盖着一层蜡，以防止干燥。这些蜡的非极性部分是表皮烃（CHCs）。它们在大多数物种之间和性别之间都是不同的，昆虫把它们作为线索和信号。考虑到CHC对昆虫的重要性，令人惊讶的是，人们对CHC谱的演变知之甚少。迄今为止，很少有研究发现昆虫的CHC谱与环境因素（如温度和湿度）之间存在潜在的相关性。我们的研究项目旨在阐明雌性模仿寄主CHC特征的达尔文选择是否是一种驱动一组寄生性和拟寄生性昆虫：杜鹃蜂（膜翅目：姬蜂科）CHC特征进化的主要力量。我们将行为实验与基于系统发育的统计分析相结合，比较了杜鹃黄蜂及其远亲宿主的CHC谱。行为实验旨在证明宿主-寄生虫CHC谱的相似性是否与宿主对吸虫虫和拟寄生虫的行为有因果关系。我们的研究结果将首次允许对寄生昆虫CHC谱的延展性和适应性进行量化。