Free-flight responses of Drosophila melanogaster to attractive odors
Free-flight responses of Drosophila melanogaster to attractive odors
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DOI：
10.1242/jeb.02305
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发表时间：
2006-08-01
影响因子：
2.8
通讯作者：
Dickinson, Michael H.
中科院分区：
文献类型：
--
作者：
Budick, Seth A.;Dickinson, Michael H.
许多能动的生物通过逆风跟随羽状物来定位吸引人的气味的来源。在D.在黑腹果蝇中，人们对个体在遇到并失去一股有吸引力的气味后如何改变飞行轨迹知之甚少。我们对D.黑腹果蝇在风洞中的各种气味条件下。在没有嗅觉线索的情况下，饥饿的苍蝇开始飞行并显示出趋风性取向。在接触到具有吸引力气味的窄带状羽流后，苍蝇降低了它们的逆风速度，同时更快地逆风飞行，导致朝向气味源的激增。在由于羽流截断而失去气味接触后，苍蝇经常发起刻板的气味投射反应，这种行为在连续的气味羽流中很少观察到。同样，在一个均匀的气味云中，苍蝇在保持逆风航向的同时快速移动。这些结果表明，既有相似性和差异的行为之间的D。黑腹和雄蛾的信息素羽的反应，表明潜在的神经机制可能存在差异。
Many motile organisms localize the source of attractive odorants by following plumes upwind. In the case of D. melanogaster, little is known of how individuals alter their flight trajectories after encountering and losing a plume of an attractive odorant. We have characterized the three-dimensional flight behavior of D. melanogaster in a wind tunnel under a variety of odor conditions. In the absence of olfactory cues, hungry flies initiate flight and display anemotactic orientation. Following contact with a narrow ribbon plume of an attractive odor, flies reduce their crosswind velocity while flying faster upwind, resulting in a surge directed toward the odor source. Following loss of odor contact due to plume truncation, flies frequently initiate a stereotyped crosswind casting response, a behavior rarely observed in a continuous odor plume. Similarly, within a homogeneous odor cloud, flies move fast while maintaining an upwind heading. These results indicate both similarities and differences between the behavior of D. melanogaster and the responses of male moths to pheromone plumes, suggesting possible differences in underlying neural mechanisms.