Morphometric and ultrastructural comparison of the olfactory system in elasmobranchs: The significance of structure-function relationships based on phylogeny and ecology

Schluessel, V., Bennett, M. B., Bleckmann, H., Blomberg, S. and Collin, S. P. (2008) Morphometric and ultrastructural comparison of the olfactory system in elasmobranchs: The significance of structure-function relationships based on phylogeny and ecology. Journal of Morphology, 269 11: 1365-1386. doi:10.1002/jmor.10661


Author Schluessel, V.
Bennett, M. B.
Bleckmann, H.
Blomberg, S.
Collin, S. P.
Title Morphometric and ultrastructural comparison of the olfactory system in elasmobranchs: The significance of structure-function relationships based on phylogeny and ecology
Journal name Journal of Morphology   Check publisher's open access policy
ISSN 0362-2525
Publication date 2008-01-01
Year available 2008
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1002/jmor.10661
Volume 269
Issue 11
Start page 1365
End page 1386
Total pages 22
Editor Harrison, F
Place of publication United States
Publisher John Wiley & Sons, Inc
Collection year 2009
Language eng
Subject C1
040502 Chemical Oceanography
040501 Biological Oceanography
260499 Oceanography not elsewhere classified
Abstract This study investigated the relationship between olfactory morphology, habitat occupancy, and lifestyle in 21 elasmobranch species in a phylogenetic context. Four measures of olfactory capability, that is, the number of olfactory lamellae, the surface area of the olfactory epithelium, the mass of the olfactory bulb, and the mass of the olfactory rosette were compared between individual species and groups, comprised of species with similar habitat and/or lifestyle. Statistical analyses using generalized least squares phylogenetic regression revealed that bentho-pelagic sharks and rays possess significantly more olfactory lamellae and larger sensory epithelial surface areas than benthic species. There was no significant correlation between either olfactory bulb or rosette mass and habitat type. There was also no significant difference between the number of lamellae or the size of the sensory surface area in groups comprised of species with similar diets, that is, groups preying predominantly on crustaceans, cephalopods, echinoderms, polychaetes, molluscs, or teleosts. However, some groups had significantly larger olfactory bulb or rosette masses than others. There was little evidence to support a correlation between phylogeny and morphology, indicating that differences in olfactory capabilities are the result of functional rather than phylogenetic adaptations. All olfactory epithelia exhibited microvilli and cilia, with microvilli in both nonsensory and sensory areas, and cilia only in sensory areas. Cilia over the sensory epithelia originated from supporting cells. In contrast to teleosts, which possess ciliated and microvillous olfactory receptor types, no ciliated olfactory receptor cells were observed. This is the first comprehensive study comparing olfactory morphology to several aspects of elasmobranch ecology in a phylogenetic context. J. Morphol., 2008. (c) 2008 Wiley-Liss, Inc.
Keyword Olfaction
Fish
shark
ray
Nasal Morphology
Sensory systems
Supertree
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: 2009 Higher Education Research Data Collection
School of Biomedical Sciences Publications
Ecology Centre Publications
 
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Created: Wed, 18 Mar 2009, 22:04:31 EST