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Type: Journal article
Title: Ontogenetic comparisons of standard metabolism in three species of crocodilians
Author: Gienger, C.
Brien, M.
Tracy, C.
Manolis, S.
Webb, G.
Seymour, R.
Christian, K.
Citation: PLoS One, 2017; 12(2):e0171082-1-e0171082-7
Publisher: PLoS Publications
Issue Date: 2017
ISSN: 1932-6203
Editor: Clark, T.D.
Statement of
C. M. Gienger, Matthew L. Brien, Christopher R. Tracy, S. Charlie Manolis, Grahame J. W. Webb, Roger S. Seymour, Keith A. Christian
Abstract: Due in part to their large size, aggressive temperament, and difficulty in handling, there are few physiological studies of adult crocodilians in the literature. As a result, studies comparing individuals across an ontogenetic series and comparisons among species are also lacking. We addressed this gap in knowledge by measuring standard metabolic rates (SMR) of three species of crocodilians (Crocodylus porosus, C. johnsoni, and Alligator mississippiensis), and included individuals that ranged from 0.22 to 114 kg. Allometric scaling of SMR with body mass was similar among the species, but C. porosus had significantly higher SMR than did C. johnsoni or A. mississippiensis. Differences in SMR among species are potentially related to behavioural differences in levels of aggression; C. porosus are the most aggressive of the crocodilians measured, and have rates of standard metabolism that are approximately 36% higher at the grand mean body size than those measured for C. johnsoni or A. mississippiensis, which are among the least aggressive crocodilians.
Keywords: Animals
Alligators and Crocodiles
Body Weight
Basal Metabolism
Behavior, Animal
Rights: Copyright: © 2017 Gienger et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
DOI: 10.1371/journal.pone.0171082
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Appears in Collections:Aurora harvest 3
Zoology publications

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