NDLI: Scaling of standard metabolic rate in estuarine crocodiles Crocodylus porosus

Content Provider	Springer Nature Link
Author	Seymour, Roger S. Gienger, C. M. Brien, Matthew L. Tracy, Christopher R. Charlie Malis, S. Webb, Grahame J. W. Christian, Keith A.
Copyright Year	2012
Abstract	Standard metabolic rate (SMR, ml O2 min−1) of captive Crocodylus porosus at 30 °C scales with body mass (kg) according to the equation, SMR = 1.01 M0.829, in animals ranging in body mass of 3.3 orders of magnitude (0.19–389 kg). The exponent is significantly higher than 0.75, so does not conform to quarter-power scaling theory, but rather is likely an emergent property with no single explanation. SMR at 1 kg body mass is similar to the literature for C. porosus and for alligators. The high exponent is not related to feeding, growth, or obesity of captive animals. The log-transformed data appear slightly curved, mainly because SMR is somewhat low in many of the largest animals (291–389 kg). A 3-parameter model is scarcely different from the linear one, but reveals a declining exponent between 0.862 and 0.798. A non-linear model on arithmetic axes overestimates SMR in 70 % of the smallest animals and does not satisfactorily represent the data.
Starting Page	491
Ending Page	500
Page Count	10
File Format	PDF
ISSN	01741578
Journal	Journal of Comparative Physiology B
Volume Number	183
Issue Number	4
e-ISSN	1432136X
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-12-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Crocodile Metabolic rate Scaling Allometry Animal Physiology Biomedicine general Human Physiology Zoology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Physiology Biochemistry Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Endocrinology

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