The link between metabolic rate and body temperature in galliform birds in thermoneutral and heat exposure conditions: The classical and phylogenetically corrected approach
Publication Type: |
Journal Article |
Year of Publication: |
2010 |
Authors: |
Tomasz Pis |
Publication/Journal: |
Journal of Thermal Biology |
Keywords: |
(mature)], [phasianus, 01500, 03506, 03509, 13002, adaptation, animal, animalia, animals, aves, birds, chordata, chordates, colchicus, evolution, evolution and, galliformes [85536], general metabolism and, genetics, grey, king quail, laboratory, mathematical and computer techniques, metabolic pathways, metabolism, necked pheasant] [galliformes] [perdix perdix, nonhuman vertebrates, partridge] [coturnix chinensis, phylogenetically corrected analysis of covariation, population genetics, population genetics (population studies), ring, techniques, temporary hyperthermia induction, vertebrata, vertebrates |
ISBN: |
0306-4565 |
Abstract:
Three galliform species (grey partridges, ring-necked pheasants, and king quail) were involved in body temperature and resting metabolic rate measurements over a broad range of ambient temperatures (20-45 degrees C). At thermoneutrality, inter-species differences in colonic temperature, as well as in metabolic rate, were observed. During heat exposure, all species reacted by elevating their body temperatures above 44 degrees C, thereby inducing temporary hyperthermia. Heat-stressing birds resulted in a slightly increased metabolic rate in king quail, but not in partridges and pheasants. Based on data of body temperature and weight specific (per body mass unit) basal metabolic rate among ten species of Galliformes order, classical and phylogenetically corrected analyses of covariation between these two physiological traits were performed. The scaling of body temperature to body mass, revealed a significant exponent of: -0.0062 and -0.0080 for conventional and phylogenetical methods, respectively. In the analyzed species, a strong positive relationship between residuals of body mass values between body temperature and metabolic rate were found. The results obtained may show a plausible evolutionary link between these traits in galliform birds. (C) 2010 Elsevier Ltd. All rights reserved.