Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria
In search of evidence for or against the endothermic dinosaur hypothesis, a recent study by Ruben et al. (1996) revealed that endotherms tend to have larger nasal cross-sectional areas than ectotherms of the same mass. The reason offered for this observation was that larger nasal passages are needed...
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ftportlandstate:oai:pdxscholar.library.pdx.edu:open_access_etds-3249 2023-05-15T18:33:31+02:00 Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria Katz, Eric Paul 1999-03-05T08:00:00Z application/pdf https://pdxscholar.library.pdx.edu/open_access_etds/2247 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=3249&context=open_access_etds English eng PDXScholar https://pdxscholar.library.pdx.edu/open_access_etds/2247 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=3249&context=open_access_etds In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). Dissertations and Theses Nasal fossa -- Size Toothed whales Dinosaurs Biology text 1999 ftportlandstate 2022-01-09T19:35:35Z In search of evidence for or against the endothermic dinosaur hypothesis, a recent study by Ruben et al. (1996) revealed that endotherms tend to have larger nasal cross-sectional areas than ectotherms of the same mass. The reason offered for this observation was that larger nasal passages are needed to house the complex respiratory turbinates possessed by endotherms. Whales were excluded from the study on the grounds that they have no nasal turbinates. In the present study, the cross-sectional area of the nasal passages of nine species of Odontoceti were measured by the use of latex casts. The regression of log cross-sectional area vs. log mass yielded the same line for the whales of the current study as for the endotherms of the previous study. Alternative explanations for the large nasal cross-sectional area of endotherms are sought. Text toothed whales Portland State University: PDXScholar Fossa ENVELOPE(9.795,9.795,62.990,62.990) |
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Open Polar |
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Portland State University: PDXScholar |
op_collection_id |
ftportlandstate |
language |
English |
topic |
Nasal fossa -- Size Toothed whales Dinosaurs Biology |
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Nasal fossa -- Size Toothed whales Dinosaurs Biology Katz, Eric Paul Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria |
topic_facet |
Nasal fossa -- Size Toothed whales Dinosaurs Biology |
description |
In search of evidence for or against the endothermic dinosaur hypothesis, a recent study by Ruben et al. (1996) revealed that endotherms tend to have larger nasal cross-sectional areas than ectotherms of the same mass. The reason offered for this observation was that larger nasal passages are needed to house the complex respiratory turbinates possessed by endotherms. Whales were excluded from the study on the grounds that they have no nasal turbinates. In the present study, the cross-sectional area of the nasal passages of nine species of Odontoceti were measured by the use of latex casts. The regression of log cross-sectional area vs. log mass yielded the same line for the whales of the current study as for the endotherms of the previous study. Alternative explanations for the large nasal cross-sectional area of endotherms are sought. |
format |
Text |
author |
Katz, Eric Paul |
author_facet |
Katz, Eric Paul |
author_sort |
Katz, Eric Paul |
title |
Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria |
title_short |
Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria |
title_full |
Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria |
title_fullStr |
Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria |
title_full_unstemmed |
Measurement of the Cross-Sectional Area of the Nasal Passages of Nine Species of Modern Odontoceti with Implications for Comparative Physiology and the Paleophysiology of the Dinosauria |
title_sort |
measurement of the cross-sectional area of the nasal passages of nine species of modern odontoceti with implications for comparative physiology and the paleophysiology of the dinosauria |
publisher |
PDXScholar |
publishDate |
1999 |
url |
https://pdxscholar.library.pdx.edu/open_access_etds/2247 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=3249&context=open_access_etds |
long_lat |
ENVELOPE(9.795,9.795,62.990,62.990) |
geographic |
Fossa |
geographic_facet |
Fossa |
genre |
toothed whales |
genre_facet |
toothed whales |
op_source |
Dissertations and Theses |
op_relation |
https://pdxscholar.library.pdx.edu/open_access_etds/2247 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=3249&context=open_access_etds |
op_rights |
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). |
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1766218124658475008 |