Pheromone communication in the model organism Nasonia vitripennis

模式生物 Nasonia vitripennis 中的信息素通讯

• 批准号: 129126435
• 负责人: Professor Dr. Joachim Ruther
• 金额: --
• 依托单位: Institut für Zoologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/129126435?language=en
• 关键词: Pheromone; communication; model; organism; Nasonia

The jewel wasp Nasonia vitripennis (Hymenoptera: Pteromalidae) is a model organism of parasitic wasp biology. Pheromones are involved at different levels of sexual communication in this species. Males produce in the rectum a mixture of (4R,5R)- and (4/?,5S)-5-hydroxy-4- decanolides (HDL) and 4-methylquinazoline which is highly attractive for virgin females. After mating, however, females do no longer respond to the male odour. The present grant proposal will investigate the mechanism and behavioural context of pheromone release as well as the putative function of HDL as a mate assessment pheromone enabling precopulatory female mate choice. Furthermore, the mechanisms involved in the olfactory switch of mated females will be studied. During courtship, N. vitripennis males release another pheromone from an oral gland eliciting female receptivity. The chemicals responsible for this phenomenon are to be identified. Pheromone communication of parasitic Hymenoptera is a hitherto neglected topic of chemoecological research. By complementing our knowledge of the complex chemical communication in the Nasonia model, the present grant proposal Is likely to contribute to a comprehensive understanding of the role of sex pheromones in the whole taxon.

珠蜂Nasonia vitrigennis(膜翅目：翅蜂科)是寄生蜂生物学的模式生物。在这个物种中，信息素参与了不同程度的性交流。雄性在直肠中产生(4R，5R)-和(4/？，5S)-5-羟基-4-癸内酯(HDL)和4-甲基喹唑啉的混合物，这对处女非常有吸引力。然而，交配后，雌性不再对雄性的气味做出反应。目前的赠款提案将调查信息素释放的机制和行为背景，以及高密度脂蛋白作为配偶评估信息素的假定功能，使交配前的雌性配偶选择。此外，还将研究雌性交配后嗅觉转换的机制。在求偶过程中，雄蜂从口腔腺体中释放出另一种信息素来激发雌蜂的接受能力。造成这一现象的化学物质有待确定。寄生膜翅目昆虫的信息素通讯是化学生态学研究中一个被忽视的课题。通过补充我们在Nasonia模型中复杂的化学交流的知识，本赠款提案可能有助于全面理解性信息素在整个分类单元中的作用。