NDLI: A new comparative metric for estimating heterothermy in endotherms.

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A new comparative metric for estimating heterothermy in endotherms.

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A new comparative metric for estimating heterothermy in endotherms.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Boyles, Justin G. Smit, Ben McKechnie, Andrew E.
Description	Country affiliation: South Africa Author Affiliation: Boyles JG ( DST/NRF Centre of Excellence,Percy FitzPatrick Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa. jgboyles@zoology.up.ac.za)
Abstract	A major focus in the study of endothermic thermoregulation has been the description of thermoregulatory patterns used by various species and/or populations. Compared with ectotherms, relatively few attempts have been made to study the thermoregulation of endotherms in an adaptive framework. We believe that one of the main factors limiting this area of research has been the lack of an appropriate metric to directly compare body temperature (T(b)) variation across all endothermic species. Thus, we present a simple comparative metric, the heterothermy index (HI), to quantify the expression of heterothermy by endotherms during a given time frame. Key advantages of HI are that (1) it represents a new analytical technique that has different strengths than the metrics commonly used to describe variation in T(b), (2) it allows for evaluation of nonenergetic costs and benefits that affect the expression of heterothermy, and (3) it has the potential to unify research on homeotherms and heterotherms through quantitative comparative analyses that examine the entire continuum of thermoregulatory patterns. In short, we suggest that our metric provides a means to overcome one of the hurdles presently slowing the advancement of research on endothermic thermoregulation beyond the simple description of thermoregulatory patterns.
File Format	HTM / HTML
ISSN	15222152
Issue Number	1
Volume Number	84
e-ISSN	15375293
Journal	Physiological and Biochemical Zoology
Language	English
Publisher	University of Chicago Press
Publisher Date	2011-01-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Physiology Discipline Biochemistry Discipline Zoology Birds Physiology Body Temperature Regulation Mammals Methods Animals Biological Evolution Body Temperature Journal Article
Content Type	Text
Resource Type	Article
Subject	Physiology Biochemistry Animal Science and Zoology

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