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Long-range hearing of Anopheles coluzzii in the vicinity of mating swarms

Long-range hearing of Anopheles coluzzii in the vicinity of mating swarms

Feugère, Lionel ORCID: 0000-0003-0883-5224, Gibson, Gabriella and Roux, Olivier (2019) Long-range hearing of Anopheles coluzzii in the vicinity of mating swarms. In: Mosquito Research - From Sensory Biology to Vector Control 2019, 07 - 08 Sep 2019, UCL Ear Institute, London, UK. (Unpublished)

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Abstract

Mosquito acoustic communication has shown to be essential to locate and maybe identify conspecifics. However, mosquito hearing-range is still being discussed while many of its basic understanding-elements including sensibility/frequency range of the antennae flagellum / Johnston’s organ have already revealed some key functions. But they have not been studied in a comprehensive multi-disciplinary approach to give a clear understanding of its capabilities. In this poster, we will present a lab study —supported by field recordings— about hearing range of females in the vicinity of a station-keeping swarm, with the requirement to keep the behaviour as natural as possible and sound stimuli as coherent as possible with what can be found in the field. This was possible using 1) behavioural essays with free-flying mosquitoes, 2) tracking of wingbeat frequency and flight trajectory, 3) the help of acoustic propagation theory to extrapolate lab results to larger swarms —typical in the field— which could not be studied under laboratory conditions, and 4) case-study field recordings. We focused on the Anopheles coluzzii which is a station-keeping swarming- mosquito. Using controlled-level played-back sound of 60-male swarm previously recorded under laboratory conditions, we found that free-flying females can respond to 36 dB SPL, equivalent to the sound level of thousands males > 1 m away. These findings could help to estimate the range of future swarm lures to attract and trap mosquitoes.

Item Type: Conference or Conference Paper (Poster)
Uncontrolled Keywords: hearing range, mosquito, swarm, anopheles gambiae, hearing, sound, acoustic communication, insect
Subjects: Q Science > QH Natural history > QH301 Biology
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Natural Resources Institute
Faculty of Engineering & Science > Natural Resources Institute > Agriculture, Health & Environment Department
Last Modified: 12 Sep 2019 09:16
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/25160

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