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风门的嗅觉驱动搜索状态处于自由飞行状态

S David Stupski¹, Floris van Breugel¹

¹Integrative Neuroscience Program, University of Nevada, Reno, 1664 N. Virginia St., Reno, NV 89557, USA; Ecology Evolution and Conservation Biology Program, University of Nevada, Reno, 1664 N. Virginia St., Reno, NV 89557, USA; Department of Mechanical Engineering, University of Nevada, Reno, 1664 N. Virginia St., Reno, NV 89557, USA.

Current biology : CB

|July 27, 2024

概括

果 (Drosophila melanogaster) 使用快速转和减速来感知风向,进行嗅觉搜索. 他们在风和静止的空气中采用不同的策略来定位化学线索.

科学领域:

动物行为动物行为
神经伦理学神经伦理学
感官生物学感官生物学

背景情况:

有机体使用流体运动线索来定位源.
风中的嗅觉搜索策略是已知的,但在静止的空气中或使用不可靠的线索时,这种策略不太常见.

研究的目的:

研究Drosophila melanogaster如何根据风的存在和方向调整嗅觉搜索策略.
确定风力估计和搜索行为背后的感觉机制.

主要方法:

开发了一个光遗传系统,用于精确的"虚拟"嗅觉刺激的传递.
在层状风和静止空气中观察到自由飞行Drosophila melanogaster的行为.

主要成果:

在层状流中逆风转,使用快速 (∼100 ms) 转,表示先前的风估计.
在静止的空气中,会表现出一种刻板印象的"沉没和循环"搜索,并具有一致的转向偏差.
在这两种条件下,气味出现时会出现减速和快速转,这表明有活跃的感知.

结论:

在启动不同的搜索策略之前,Drosophila melanogaster评估了周围的风条件.
像减速和转这样的积极感知机动有助于测量风的特性,从而有效地进行嗅觉导航.

关键词:

活动感应感应器一个我们感觉到的东西.动态的动态性是无动态的.地区搜索区域搜索区域搜索导航导航导航导航导航嗅觉嗅觉是一种嗅觉.嗅觉搜索是一种嗅觉搜索.视觉遗传学视觉遗传学搜索搜索搜索搜索搜索感官整合感官整合

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