A comparison of the external morphology of the membranous inner ear in elasmobranchs

Evangelista, Carla, Mills, Morena, Siebeck, Ulrike E and Collin, Shaun C (2010) A comparison of the external morphology of the membranous inner ear in elasmobranchs. Journal of Morphology, 271 4: 483-495. doi:10.1002/jmor.10812

Author Evangelista, Carla
Mills, Morena
Siebeck, Ulrike E
Collin, Shaun C
Title A comparison of the external morphology of the membranous inner ear in elasmobranchs
Journal name Journal of Morphology   Check publisher's open access policy
ISSN 0362-2525
Publication date 2010-01
Year available 2010
Sub-type Article (original research)
DOI 10.1002/jmor.10812
Volume 271
Issue 4
Start page 483
End page 495
Total pages 13
Editor J. Matthias Strack
Place of publication United States
Publisher John Wiley & Sons
Collection year 2011
Language eng
Subject C1
960604 Environmental Management Systems
070405 Fish Physiology and Genetics
Abstract Studies on the elasmobranch inner ear have focused predominantly on a small group of sharks, particularly, carcharhinids. As a result, subsequent studies in other species have subdivided species into two main groups: those typical and those atypical of carcharhinid sharks. This study proposes a different set of inner-ear morphology groupings to those previously suggested. The inner ears from 17 species of elasmobranchs (representing both sharks and rays) are examined in this study and based on morphometric data some groups include both rays and sharks. Four groups are now proposed based predominantly on the shape and dimensions of the membranous otoconial organs, and characteristics of the semicircular canals. Evident morphological differences between the ear types belonging to the new groups include the membranes of the semicircular canals being bound to the otoconial organs in some species, while only being connected via the canal ducts in others, as well as clear variation present in saccular organ size. Previous studies examining variation in the inner ear have attributed differences to either phylogeny or functional significance. Results from this study suggest that neither phylogeny nor feeding strategy solely accounts for the morphological diversity present in the external morphology of the elasmobranch inner ear. J. Morphol., 2010. © 2010 Wiley-Liss, Inc.
Keyword elasmobranch
inner ear
membranous labyrinth
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
Queensland Brain Institute Publications
School of Biomedical Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 4 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 18 Apr 2010, 00:03:21 EST