The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.

The vestibular system maintains the body's sense of balance and, therefore, was probably subject to strong selection during evolutionary transitions in locomotion. Among mammals, bats possess unique traits that place unusual demands on their vestibular systems. First, bats are capable of powere...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kalina T J Davies, Paul J J Bates, Ibnu Maryanto, James A Cotton, Stephen J Rossiter
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2457fb6ff14f4adaa121352e312c72f6
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2457fb6ff14f4adaa121352e312c72f6
record_format	dspace
spelling	oai:doaj.org-article:2457fb6ff14f4adaa121352e312c72f62021-11-18T07:48:01ZThe evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.1932-620310.1371/journal.pone.0061998https://doaj.org/article/2457fb6ff14f4adaa121352e312c72f62013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23637943/?tool=EBIhttps://doaj.org/toc/1932-6203The vestibular system maintains the body's sense of balance and, therefore, was probably subject to strong selection during evolutionary transitions in locomotion. Among mammals, bats possess unique traits that place unusual demands on their vestibular systems. First, bats are capable of powered flight, which in birds is associated with enlarged semicircular canals. Second, many bats have enlarged cochleae associated with echolocation, and both cochleae and semicircular canals share a space within the petrosal bone. To determine how bat vestibular systems have evolved in the face of these pressures, we used micro-CT scans to compare canal morphology across species with contrasting flight and echolocation capabilities. We found no increase in canal radius in bats associated with the acquisition of powered flight, but canal radius did correlate with body mass in bat species from the suborder Yangochiroptera, and also in non-echolocating Old World fruit bats from the suborder Yinpterochiroptera. No such trend was seen in members of the Yinpterochiroptera that use laryngeal echolocation, although canal radius was associated with wing-tip roundedness in this group. We also found that the vestibular system scaled with cochlea size, although the relationship differed in species that use constant frequency echolocation. Across all bats, the shape of the anterior and lateral canals was associated with large cochlea size and small body size respectively, suggesting differential spatial constraints on each canal depending on its orientation within the skull. Thus in many echolocating bats, it seems that the combination of small body size and enlarged cochlea together act as a principal force on the vestibular system. The two main groups of echolocating bats displayed different canal morphologies, in terms of size and shape in relation to body mass and cochlear size, thus suggesting independent evolutionary pathways and offering tentative support for multiple acquisitions of echolocation.Kalina T J DaviesPaul J J BatesIbnu MaryantoJames A CottonStephen J RossiterPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e61998 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kalina T J Davies Paul J J Bates Ibnu Maryanto James A Cotton Stephen J Rossiter The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.
description	The vestibular system maintains the body's sense of balance and, therefore, was probably subject to strong selection during evolutionary transitions in locomotion. Among mammals, bats possess unique traits that place unusual demands on their vestibular systems. First, bats are capable of powered flight, which in birds is associated with enlarged semicircular canals. Second, many bats have enlarged cochleae associated with echolocation, and both cochleae and semicircular canals share a space within the petrosal bone. To determine how bat vestibular systems have evolved in the face of these pressures, we used micro-CT scans to compare canal morphology across species with contrasting flight and echolocation capabilities. We found no increase in canal radius in bats associated with the acquisition of powered flight, but canal radius did correlate with body mass in bat species from the suborder Yangochiroptera, and also in non-echolocating Old World fruit bats from the suborder Yinpterochiroptera. No such trend was seen in members of the Yinpterochiroptera that use laryngeal echolocation, although canal radius was associated with wing-tip roundedness in this group. We also found that the vestibular system scaled with cochlea size, although the relationship differed in species that use constant frequency echolocation. Across all bats, the shape of the anterior and lateral canals was associated with large cochlea size and small body size respectively, suggesting differential spatial constraints on each canal depending on its orientation within the skull. Thus in many echolocating bats, it seems that the combination of small body size and enlarged cochlea together act as a principal force on the vestibular system. The two main groups of echolocating bats displayed different canal morphologies, in terms of size and shape in relation to body mass and cochlear size, thus suggesting independent evolutionary pathways and offering tentative support for multiple acquisitions of echolocation.
format	article
author	Kalina T J Davies Paul J J Bates Ibnu Maryanto James A Cotton Stephen J Rossiter
author_facet	Kalina T J Davies Paul J J Bates Ibnu Maryanto James A Cotton Stephen J Rossiter
author_sort	Kalina T J Davies
title	The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.
title_short	The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.
title_full	The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.
title_fullStr	The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.
title_full_unstemmed	The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.
title_sort	evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/2457fb6ff14f4adaa121352e312c72f6
work_keys_str_mv	AT kalinatjdavies theevolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT pauljjbates theevolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT ibnumaryanto theevolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT jamesacotton theevolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT stephenjrossiter theevolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT kalinatjdavies evolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT pauljjbates evolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT ibnumaryanto evolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT jamesacotton evolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation AT stephenjrossiter evolutionofbatvestibularsystemsinthefaceofpotentialantagonisticselectionpressuresforflightandecholocation
_version_	1718422900575305728

The evolution of bat vestibular systems in the face of potential antagonistic selection pressures for flight and echolocation.

Ejemplares similares