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Male-swarm sound as a species-specific cue for females prior to entering the swarm

Male-swarm sound as a species-specific cue for females prior to entering the swarm

Feugère, Lionel ORCID: 0000-0003-0883-5224, Gibson, Gabriella and Roux, Olivier (2019) Male-swarm sound as a species-specific cue for females prior to entering the swarm. In: Ento ’19 International Symposium & Annual National Science Meeting, 20-22 Aug 2019, London School of Hygiene & Tropical Medicine, London, UK. (Unpublished)

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Abstract

Mosquitoes have been shown to respond to opposite-sex sound by modulating their flight tones at short range (i.e. within a few cm of each other), entering into a ‘dialogue’ with each other. We hypothesised that these acoustic signals may be used by females to avoid being inseminated by a non-conspecific male which shares the same mating ecological niche. Accordingly, the distance over which a female can identify a conspecific male could be an important factor in their ability to accept or reject a potential mate.

In the case of swarming species, such as those in the Anopheles gambiae complex, however, males can gather by the thousands over a swarm marker. Such an aggregation of N males increases the sound pressure level by ~10 log10 N dB compared to a single male, assuming the swarm is localized within a relatively small volume. Under laboratory conditions, using controlled-level played-back sound of male swarm, we found that free-flying Anopheles coluzzii females 1) respond to the sound of large swarms of thousands males > 1 m away, and 2) contrary to males, females do not respond differently to the sound stimuli of Anopheles coluzzii or Anopheles gambiae s.s.

Item Type: Conference or Conference Paper (Speech)
Uncontrolled Keywords: mosquito, swarm, acoustic communication, hearing, insect, species-specific cues
Subjects: Q Science > QL Zoology
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
Related URLs:
Last Modified: 12 Sep 2019 10:35
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/25156

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