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Olfactory Sensing and Navigation in Turbulent Environments
Annual Review of Condensed Matter Physics ( IF 14.3 ) Pub Date : 2022-03-10 , DOI: 10.1146/annurev-conmatphys-031720-032754
Gautam Reddy 1 , Venkatesh N. Murthy 2, 3 , Massimo Vergassola 4, 5
Affiliation  

Fluid turbulence is a double-edged sword for the navigation of macroscopic animals, such as birds, insects, and rodents. On the one hand, turbulence enables pheromone communication among mates and the possibility of locating food by their odors from long distances. Molecular diffusion would indeed be unable to spread odors over relevant distances in natural conditions. On the other hand, turbulent flows are hard to predict, and learning effective maneuvers to navigate them is challenging, as we discuss in this review. We first provide a summary of the olfactory organs that sense airborne or surface-bound odors, as well as the computational tasks that animals face when extracting information useful for navigation from an olfactory signal. A compendium of the dynamics of turbulent transport emphasizes those aspects that directly impact animals’ behavior. The state of the art on navigational strategies is discussed, followed by a concluding section dedicated to future challenges in the field.

中文翻译:


湍流环境中的嗅觉传感和导航

对于鸟类、昆虫和啮齿动物等宏观动物的航行来说,流体湍流是一把双刃剑。一方面,湍流使配偶之间能够交流信息素,并有可能通过远距离的气味来定位食物。在自然条件下,分子扩散确实无法在相关距离上散布气味。另一方面,湍流很难预测,学习有效的机动来导航它们是具有挑战性的,正如我们在这篇评论中所讨论的那样。我们首先总结了感知空气或表面气味的嗅觉器官,以及动物在从嗅觉信号中提取对导航有用的信息时所面临的计算任务。湍流运输动力学概要强调了直接影响动物行为的那些方面。讨论了有关导航策略的最新技术,然后是一个专门讨论该领域未来挑战的结论部分。

更新日期:2022-03-10
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