The role of visual and mechanosensory cues in structuring forward flight in Drosophila melanogaster
The role of visual and mechanosensory cues in structuring forward flight in Drosophila melanogaster
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DOI：
10.1242/jeb.006502
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发表时间：
2007-12-01
影响因子：
2.8
通讯作者：
Dickinson, Michael H.
中科院分区：
文献类型：
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作者：
Budick, Seth A.;Reiser, Michael B.;Dickinson, Michael H.
人们早就知道，许多飞行的昆虫使用视觉线索来确定风的方向，并在不同的风况下控制它们的地速。较少探索的是机械感觉线索在昆虫相对于环境空气定向中的作用。在这里，我们表明，果蝇，磁栓系，以便能够围绕他们的偏航轴旋转，能够检测和定向到风，将在向前飞行的经验。此外，这种行为是速度相关的，并且可能至少部分地由约翰斯顿器官、也参与近场声音检测的天线中的弦音器官来辅助。这些风介导的反应可能有助于解释苍蝇如何能够向前飞，尽管视觉反应可能会抑制这种行为。扩展的视觉刺激，如在向前飞行时遇到的，是已知的D。黑腹果蝇以栓系模式飞行。因此，被拴着的苍蝇强烈地朝向收缩的焦点，这对于任何试图向前飞的动物来说都是一个问题。我们在这项研究中表明，风的刺激，通过mechanosensory手段转导，可以补偿视觉扩展的厌恶，从而可能有助于解释这些动物是如何确实能够保持向前飞行。
It has long been known that many flying insects use visual cues to orient with respect to the wind and to control their groundspeed in the face of varying wind conditions. Much less explored has been the role of mechanosensory cues in orienting insects relative to the ambient air. Here we show that Drosophila melanogaster, magnetically tethered so as to be able to rotate about their yaw axis, are able to detect and orient into a wind, as would be experienced during forward flight. Further, this behavior is velocity dependent and is likely subserved, at least in part, by the Johnston's organs, chordotonal organs in the antennae also involved in near-field sound detection. These wind- mediated responses may help to explain how flies are able to fly forward despite visual responses that might otherwise inhibit this behavior. Expanding visual stimuli, such as are encountered during forward flight, are the most potent aversive visual cues known for D. melanogaster flying in a tethered paradigm. Accordingly, tethered flies strongly orient towards a focus of contraction, a problematic situation for any animal attempting to fly forward. We show in this study that wind stimuli, transduced via mechanosensory means, can compensate for the aversion to visual expansion and thus may help to explain how these animals are indeed able to maintain forward flight.