Jenni L, Molyneux D H, Livesey J L, Galun R
Nature. 1980 Jan 24;283(5745):383-5. doi: 10.1038/283383a0.
Although much is known about factors which determine infection rates of salivarian trypanosomes (subgenera Nannomonas, Duttonella and Tryanozoon) in the tsetse fly Glossina, it is not clear why infection rates of Trypanozoon are high in mammalian hosts but low in wild-caught Glossina and why trypanosomiasis occurs where Glossina is not readily detectable. We report here that the feeding behaviour of trypanosome-infected Glossina differed from that of uninfected control flies. Infected flies probed more frequently and fed more voraciously. We describe a specific relationship between trypanosomes and the mechanoreceptors responsible for detecting the rate of blood flow, and show how infection affects that rate in the labrum. We suggest that the observed differences in feeding behaviour result from impaired function of the labral mechanoreceptors in infected Glossina.
尽管对于决定采采蝇（舌蝇属）中涎源性锥虫（细滴虫亚属、达顿氏亚属和锥虫亚属）感染率的因素已了解甚多，但尚不清楚为何锥虫亚属在哺乳动物宿主中的感染率很高，而在野外捕获的采采蝇中感染率却很低，以及为何在难以轻易检测到采采蝇的地方会发生锥虫病。我们在此报告，感染锥虫的采采蝇的取食行为与未感染的对照蝇不同。受感染的采采蝇探测更频繁，进食更贪婪。我们描述了锥虫与负责检测血流速率的机械感受器之间的特定关系，并展示了感染如何影响上唇的血流速率。我们认为，观察到的取食行为差异是由于受感染采采蝇上唇机械感受器功能受损所致。
