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The metabolic rate and thermal conductance of the eastern barred bandicoot (Perameles gunnii) at different ambient temperatures

Citation

Ikonomopoulou, M and Rose, RW, The metabolic rate and thermal conductance of the eastern barred bandicoot (Perameles gunnii) at different ambient temperatures, Australian Journal of Zoology, 51, (6) pp. 603-610. ISSN 0004-959X (2003) [Refereed Article]

DOI: doi:10.1071/ZO03064

Abstract

We investigated the metabolic rate, thermoneutral zone and thermal conductance of the eastern barred bandicoot in Tasmania. Five adult eastern barred bandicoots (two males, three non-reproductive females) were tested at temperatures of 3, 10, 15, 20, 25, 30, 35 and 40°C. The thermoneutral zone was calculated from oxygen consumption and body temperature, measured during the daytime: their normal resting phase. It was found that the thermoneutral zone lies between 25°C and 30°C, with a minimum metabolic rate of 0.51 mL g-1 h-1 and body temperature of 35.8°C. At cooler ambient temperatures (3-20°C) the body temperature decreased to approximately 34.0°C while the metabolic rate increased from 0.7 to 1.3 mL g-1 h-1. At high temperatures (35°C and 40°C) both body temperature (36.9-38.7°C) and metabolic rate (1.0-1.5 mL g -1 h-1) rose. Thermal conductance was low below an ambient temperature of 30°C but increased significantly at higher temperatures. The low thermal conductance (due, in part, to good insulation, a reduced body temperature at lower ambient temperatures, combined with a relatively high metabolic rate) suggests that this species is well adapted to cooler environments but it could not thermoregulate easily at temperatures above 30°C.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Physiology
Research Field:Comparative Physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Ikonomopoulou, M (Miss Maria Ikonomopoulou)
Author:Rose, RW (Associate Professor Randy Rose)
ID Code:29872
Year Published:2003
Web of Science® Times Cited:6
Deposited By:Zoology
Deposited On:2004-08-01
Last Modified:2011-09-26
Downloads:0

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