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Sensory Evolution on the ThresholdAdaptations in Secondarily Aquatic Vertebrates$
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J. G. M. Thewissen

Print publication date: 2008

Print ISBN-13: 9780520252783

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520252783.001.0001

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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 20 September 2021

Comparative Anatomy and Function of Hearing in Aquatic Amphibians, Reptiles, and Birds

Comparative Anatomy and Function of Hearing in Aquatic Amphibians, Reptiles, and Birds

Chapter:
(p.182) (p.183) 12 Comparative Anatomy and Function of Hearing in Aquatic Amphibians, Reptiles, and Birds
Source:
Sensory Evolution on the Threshold
Author(s):

Thomas Hetherington

Publisher:
University of California Press
DOI:10.1525/california/9780520252783.003.0012

This chapter discusses the structure and function of hearing in aquatic amphibians, reptiles, and birds. It examines patterns of evolutionary change in the auditory systems of amphibians, reptiles, and birds that have returned to an aquatic lifestyle. It begins with the basic features of the ancestral terrestrial auditory system, followed by the terrestrial auditory system underwater and the mechanisms used for underwater hearing. These mechanisms include sound transmission (bone conduction and pressure transduction) and sound localization. It also compares the auditory systems of aquatic amphibians, reptiles, and bird. Finally, it examines the evolutionary transformations of the ears of secondarily aquatic tetrapods.

Keywords:   hearing, aquatic amphibians, aquatic reptiles, aquatic birds, auditory systems, sound transmission, bone conduction, pressure transduction, sound localization, secondarily aquatic tetrapods

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