Flies require bilateral sensory input to track odor gradients in flight.
Flies require bilateral sensory input to track odor gradients in flight.
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DOI：
10.1016/j.cub.2009.06.022
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发表时间：
2009-08-11
期刊：
影响因子：
--
通讯作者：
Frye MA
中科院分区：
文献类型：
--
作者：
Duistermars BJ;Chow DM;Frye MA
果蝇以飞行为生，寻找有吸引力的食物气味。为了保持向前飞行，苍蝇平衡自我诱导的双侧视觉运动和双侧风线索的强度，但尚不清楚它们是否使用双侧嗅觉线索来跟踪飞行中的气味。跟踪气味梯度需要在两个空间上分离的化学感受器官之间进行比较，并且已经在包括果蝇在内的几种行走昆虫中观察到。嗅觉触角之间的距离只有几分之一毫米，大多数感觉神经元都是双侧投射，对称地激活一级嗅觉中继，这两种情况似乎都限制了双侧感觉比较的能力。果蝇在飞行过程中能够追踪气味梯度吗？使用修改后的飞行模拟器，使机动的偏航轴，我们发现，苍蝇很容易直接转向一个横向定位的气味羽。这种能力通过阻塞对一个天线的感觉输入而被废除。来自约翰斯顿氏器的机械感觉输入和来自第三触角节的嗅觉输入合作，以指导小角度偏航，使羽流梯度上升。我们还表明，从左侧天线的感觉信号的贡献不成比例的气味跟踪比右，提供了进一步的证据，在无脊椎动物的感觉偏侧化。
Fruit flies make their living on the fly in search of attractive food odors. To maintain forward flight, flies balance the strength of self-induced bilateral visual motion and bilateral wind cues, but it is unknown whether they use bilateral olfactory cues to track odors in flight. Tracking an odor gradient requires comparisons across two spatially separated chemosensory organs and has been observed in several walking insects, including Drosophila. The olfactory antennae are separated by a fraction of a millimeter, and most sensory neurons project bilaterally and symmetrically activate the first-order olfactory relay, both of which would seem to constrain the capacity for bilateral sensory comparisons. Are fruit flies nonetheless able to track an odor gradient during flight? Using a modified flight simulator that enables maneuvers in the yaw axis, we found that flies readily steer directly toward a laterally positioned odor plume. This capability is abolished by occluding sensory input to one antenna. Mechanosensory input from the Johnston’s organ and olfactory input from the third antennal segment cooperate to direct small angle yaw turns up the plume gradient. We additionally show that sensory signals from the left antenna contribute disproportionately more to odor tracking than the right, providing further evidence of sensory lateralization in invertebrates.
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影响因子：
64.8
作者：
Yorozu, Suzuko;Wong, Allan;Fischer, Brian J.;Dankert, Heiko;Kernan, Maurice J.;Kamikouchi, Azusa;Ito, Kei;Anderson, David J.
通讯作者：
Anderson, David J.
影响因子：
2.8
作者：
Budick, Seth A.;Reiser, Michael B.;Dickinson, Michael H.
通讯作者：
Dickinson, Michael H.
DOI：
10.1007/s003590100183
发表时间：
2001-03-01
影响因子：
2.1
作者：
Dürr, V;König, Y;Kittmann, R
通讯作者：
Kittmann, R
影响因子：
9.2
作者：
Maimon, Gaby;Straw, Andrew D.;Dickinson, Michael H.
通讯作者：
Dickinson, Michael H.
影响因子：
3.7
作者：
Rogers LJ;Vallortigara G
通讯作者：
Vallortigara G