Evolution of directional hearing in moths

conversion of bat detection devices to asymmetric pressure gradient receivers

Jeremy Gibson, Andrew Baxter Reid, James Windmill, Michael D. Greenfield

Research output: Contribution to conferencePoster

Abstract

In most acoustic animals directional hearing evolved alongside basic structure and function of the ears. Moths differ somewhat because their ears generally function as simple bat detectors with little or no directional ability. Those that do use sound for mating communication represent a more special case: These species can localize sound sources, but singing and the ability to localize conspecific song evolved after the origin of hearing. Thus, directional hearing may be constrained by fundamental auditory features that were not initially adapted for the task of localization. We studied this problem in the lesser waxmoth, a species in which males broadcast a long-range advertisement song attractive to females. Our analyses revealed a novel localization mechanism wherein the geometry and structure of the tympanal membrane of each ear afford sharp sensitivity to sound arriving from a distinct angle. Females can localize singing males, but they only do so by following an indirect trajectory that may be interrupted by wide deviations. Such inefficiency may be characteristic of specialized perceptual traits that rely on general ones having already undergone extensive prior evolution.
Original languageEnglish
Publication statusPublished - 3 Aug 2016
EventAnimal Behavior Society - University of Missouri, Columbia, United States
Duration: 27 Jul 20163 Aug 2016

Conference

ConferenceAnimal Behavior Society
CountryUnited States
CityColumbia
Period27/07/163/08/16

Fingerprint

Moths
Hearing
Ear
Singing
Aptitude
Music
Pressure
Equipment and Supplies
Acoustics
Communication
Membranes

Keywords

  • directional hearing
  • directional acoustical sensor
  • bat detection

Cite this

Gibson, J., Reid, A. B., Windmill, J., & Greenfield, M. D. (2016). Evolution of directional hearing in moths: conversion of bat detection devices to asymmetric pressure gradient receivers. Poster session presented at Animal Behavior Society, Columbia, United States.
Gibson, Jeremy ; Reid, Andrew Baxter ; Windmill, James ; Greenfield, Michael D. / Evolution of directional hearing in moths : conversion of bat detection devices to asymmetric pressure gradient receivers. Poster session presented at Animal Behavior Society, Columbia, United States.
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Gibson, J, Reid, AB, Windmill, J & Greenfield, MD 2016, 'Evolution of directional hearing in moths: conversion of bat detection devices to asymmetric pressure gradient receivers' Animal Behavior Society, Columbia, United States, 27/07/16 - 3/08/16, .

Evolution of directional hearing in moths : conversion of bat detection devices to asymmetric pressure gradient receivers. / Gibson, Jeremy; Reid, Andrew Baxter; Windmill, James; Greenfield, Michael D.

2016. Poster session presented at Animal Behavior Society, Columbia, United States.

Research output: Contribution to conferencePoster

TY - CONF

T1 - Evolution of directional hearing in moths

T2 - conversion of bat detection devices to asymmetric pressure gradient receivers

AU - Gibson, Jeremy

AU - Reid, Andrew Baxter

AU - Windmill, James

AU - Greenfield, Michael D.

PY - 2016/8/3

Y1 - 2016/8/3

N2 - In most acoustic animals directional hearing evolved alongside basic structure and function of the ears. Moths differ somewhat because their ears generally function as simple bat detectors with little or no directional ability. Those that do use sound for mating communication represent a more special case: These species can localize sound sources, but singing and the ability to localize conspecific song evolved after the origin of hearing. Thus, directional hearing may be constrained by fundamental auditory features that were not initially adapted for the task of localization. We studied this problem in the lesser waxmoth, a species in which males broadcast a long-range advertisement song attractive to females. Our analyses revealed a novel localization mechanism wherein the geometry and structure of the tympanal membrane of each ear afford sharp sensitivity to sound arriving from a distinct angle. Females can localize singing males, but they only do so by following an indirect trajectory that may be interrupted by wide deviations. Such inefficiency may be characteristic of specialized perceptual traits that rely on general ones having already undergone extensive prior evolution.

AB - In most acoustic animals directional hearing evolved alongside basic structure and function of the ears. Moths differ somewhat because their ears generally function as simple bat detectors with little or no directional ability. Those that do use sound for mating communication represent a more special case: These species can localize sound sources, but singing and the ability to localize conspecific song evolved after the origin of hearing. Thus, directional hearing may be constrained by fundamental auditory features that were not initially adapted for the task of localization. We studied this problem in the lesser waxmoth, a species in which males broadcast a long-range advertisement song attractive to females. Our analyses revealed a novel localization mechanism wherein the geometry and structure of the tympanal membrane of each ear afford sharp sensitivity to sound arriving from a distinct angle. Females can localize singing males, but they only do so by following an indirect trajectory that may be interrupted by wide deviations. Such inefficiency may be characteristic of specialized perceptual traits that rely on general ones having already undergone extensive prior evolution.

KW - directional hearing

KW - directional acoustical sensor

KW - bat detection

UR - http://www.animalbehaviorsociety.org/2016/index.php

UR - http://www.pnas.org/content/113/48/E7740.full?sid=bbdcd040-7c83-4aea-ac66-e8df595ff293

M3 - Poster

ER -

Gibson J, Reid AB, Windmill J, Greenfield MD. Evolution of directional hearing in moths: conversion of bat detection devices to asymmetric pressure gradient receivers. 2016. Poster session presented at Animal Behavior Society, Columbia, United States.