Journal article

Metabolic rate and membrane fatty acid composition in birds: a comparison between long-living parrots and short-living fowl

Magdalene K Montgomery, AJ Hulbert, William A Buttemer

JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY | SPRINGER HEIDELBERG | Published : 2012

Abstract

Both basal metabolic rate (BMR) and maximum lifespan potential (MLSP) vary with body size in mammals and birds and it has been suggested that these are mediated through size-related variation in membrane fatty acid composition. Whereas the physical properties of membrane fatty acids affect the activity of membrane proteins and, indirectly, an animal's BMR, it is the susceptibility of those fatty acids to peroxidation which influence MLSP. Although there is a correlation between body size and MLSP, there is considerable MLSP variation independent of body size. For example, among bird families, Galliformes (fowl) are relatively short-living and Psittaciformes (parrots) are unusually long-livin..

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University of Melbourne Researchers

Grants

Awarded by Australian Research Council


Funding Acknowledgements

We gratefully acknowledge the assistance on diet formulation provided by Kirk. C. Klasing and Ron Newman. This research was supported by funding from the Australian Research Council (DP8079261). The study was conceived and planned by AJH, WAB and MKM; the experiments were carried out by MKM and the manuscript was written by MKM, AJH, and WAB.