Semiochemicals mediating host-finding behaviour in the phoretic association between Macrocheles saceri (Acari: Mesostigmata) and Scarabaeus species (Coleoptera: Scarabaeidae)
Semiochemicals mediating host-finding behaviour in the phoretic association between Macrocheles saceri (Acari: Mesostigmata) and Scarabaeus species (Coleoptera: Scarabaeidae)
复制标题
介导 Macrocheles saceri（蜱螨：Mesostigmata）和金龟子属（鞘翅目：Scarabaeidae）游动关联中宿主寻找行为的化学信息素
作者：
J. Niogret;J. Lumaret;M. Bertrand
Phoresy是一种种间关联，其中移动的生物确保小的和/或无翅的生物定殖于斑块分布的环境。大螯螨（Macrocheles saceri，阿卡里：Mesostigmata）是一种以金龟子（Scarabaeus dung beetles，鞘翅目：金龟子科）为捕食对象的嗜食性螨。测定了不同种类金龟子体表螨类固定部位和渗透负荷的差异。甲虫身上的刚毛数量不能解释螨固定的观察模式。有证据表明，信息化学物质的主机角质层发挥利它素的作用，在主机发现行为的泳螨。此外，化学信息素确保宿主的歧视。
Summary.Phoresy is an interspecific association where mobile organisms ensure small and/or wingless organisms to colonize patchy distributed environment. Macrocheles saceri (Acari: Mesostigmata) is a phoretic mite which specialized on Scarabaeus dung beetles (Coleoptera: Scarabaeidae). Variation for phoretic load and sites for mite fixation on beetle body has been tested according to Scarabaeus species. The number of setae on beetle body cannot explain the observed patterns in mite fixation. Evidence was provided that the semiochemicals of the host cuticle play a kairomonal role in the host finding behaviour of phoretic mites. In addition semiochemicals ensure host discrimination.