Gutenberg Open Science: Body temperatures in dinosaurs : what can growth curves tell us?

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7793

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DC Field	Value	Language
dc.contributor.author	Griebeler, Eva Maria	-
dc.date.accessioned	2022-10-04T07:59:50Z	-
dc.date.available	2022-10-04T07:59:50Z	-
dc.date.issued	2013	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/7808	-
dc.description.abstract	To estimate the body temperature (BT) of seven dinosaurs Gillooly, Alleen, and Charnov (2006) used an equation that predicts BT from the body mass and maximum growth rate (MGR) with the latter preserved in ontogenetic growth trajectories (BT-equation). The results of these authors evidence inertial homeothermy in Dinosauria and suggest that, due to overheating, the maximum body size in Dinosauria was ultimately limited by BT. In this paper, I revisit this hypothesis of Gillooly, Alleen, and Charnov (2006). I first studied whether BTs derived from the BT-equation of today’s crocodiles, birds and mammals are consistent with core temperatures of animals. Second, I applied the BT-equation to a larger number of dinosaurs than Gillooly, Alleen, and Charnov (2006) did. In particular, I estimated BT of Archaeopteryx (from two MGRs), ornithischians (two), theropods (three), prosauropods (three), and sauropods (nine). For extant species, the BT value estimated from the BT-equation was a poor estimate of an animal’s core temperature. For birds, BT was always strongly overestimated and for crocodiles underestimated; for mammals the accuracy of BT was moderate. I argue that taxon-specific differences in the scaling of MGR (intercept and exponent of the regression line, log-log-transformed) and in the parameterization of the Arrhenius model both used in the BT-equation as well as ecological and evolutionary adaptations of species cause these inaccuracies. Irrespective of the found inaccuracy of BTs estimated from the BT-equation and contrary to the results of Gillooly, Alleen, and Charnov (2006) I found no increase in BT with increasing body mass across all dinosaurs (Sauropodomorpha, Sauropoda) studied. This observation questions that, due to overheating, the maximum size in Dinosauria was ultimately limited by BT. However, the general high inaccuracy of dinosaurian BTs derived from the BT-equation makes a reliable test of whether body size in dinosaurs was ultimately limited by overheating impossible.	en_GB
dc.description.sponsorship	DFG, Open Access-Publizieren Universität Mainz / Universitätsmedizin	de
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/3.0/	*
dc.subject.ddc	590 Tiere (Zoologie)	de_DE
dc.subject.ddc	590 Zoological sciences	en_GB
dc.title	Body temperatures in dinosaurs : what can growth curves tell us?	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-7793	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 10 Biologie	de
jgu.organisation.number	7970	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	PLoS one	de
jgu.journal.volume	8	de
jgu.journal.issue	10	de
jgu.pages.alternative	e74317	de
jgu.publisher.year	2013	-
jgu.publisher.name	PLoS	de
jgu.publisher.place	Lawrence, Kan.	de
jgu.publisher.uri	http://dx.doi.org/10.1371/journal.pone.0074317	de
jgu.publisher.issn	1932-6203	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	590	de
opus.date.modified	2018-07-31T09:32:14Z	-
opus.subject.dfgcode	09-314	-
opus.organisation.string	FB 10: Biologie: Institut für Zoologie	de_DE
opus.identifier.opusid	24438	-
opus.institute.number	1003	-
opus.metadataonly	false	-
opus.type.contenttype	Keine	de_DE
opus.type.contenttype	None	en_EN
opus.affiliated	Griebeler, Eva Maria	-
jgu.publisher.doi	10.1371/journal.pone.0074317	de
jgu.organisation.ror	https://ror.org/023b0x485	-
Appears in collections:	DFG-OA-Publizieren (2012 - 2017)

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