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Thermoregulatory, metabolic and ventilatory physiology of the eastern barred bandicoot ( Perameles gunnii )

Thermoregulatory, metabolic and ventilatory physiology of the eastern barred bandicoot (... Thermoregulatory, metabolic and ventilatory parameters measured for the Tasmanian eastern barred bandicoot ( Perameles gunnii ) in thermoneutrality (ambient temperature = 30°C) were: body temperature 35.1°C, basal metabolic rate 0.55 mL O 2 g –1 h –1 , wet thermal conductance 2.2 mL O 2 g –1 h –1 °C –1 , dry thermal conductance 1.4 J g –1 h –1 °C –1 , ventilatory frequency 24.8 breaths min –1 , tidal volume 9.9 mL, minute volume of 246 mL min –1 , and oxygen extraction efficiency 22.2%. These physiological characteristics are consistent with a cool/wet distribution, e.g. high basal metabolic rate (3.33 mL O 2 g –0.75 h –1 ) for thermogenesis, low thermal conductance (0.92 J g –1 h –1 °C –1 at 10°C) for heat retention and intolerance of high ambient temperatures (≥35°C) with panting, hyperthermia and high total evaporative water loss (16.9 mg H 2 O g –1 h –1 ). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australian Journal of Zoology CSIRO Publishing

Thermoregulatory, metabolic and ventilatory physiology of the eastern barred bandicoot ( Perameles gunnii )

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Publisher
CSIRO Publishing
Copyright
CSIRO
ISSN
0004-959X
eISSN
1446-5698
DOI
10.1071/ZO05071
Publisher site
See Article on Publisher Site

Abstract

Thermoregulatory, metabolic and ventilatory parameters measured for the Tasmanian eastern barred bandicoot ( Perameles gunnii ) in thermoneutrality (ambient temperature = 30°C) were: body temperature 35.1°C, basal metabolic rate 0.55 mL O 2 g –1 h –1 , wet thermal conductance 2.2 mL O 2 g –1 h –1 °C –1 , dry thermal conductance 1.4 J g –1 h –1 °C –1 , ventilatory frequency 24.8 breaths min –1 , tidal volume 9.9 mL, minute volume of 246 mL min –1 , and oxygen extraction efficiency 22.2%. These physiological characteristics are consistent with a cool/wet distribution, e.g. high basal metabolic rate (3.33 mL O 2 g –0.75 h –1 ) for thermogenesis, low thermal conductance (0.92 J g –1 h –1 °C –1 at 10°C) for heat retention and intolerance of high ambient temperatures (≥35°C) with panting, hyperthermia and high total evaporative water loss (16.9 mg H 2 O g –1 h –1 ).

Journal

Australian Journal of ZoologyCSIRO Publishing

Published: Mar 23, 2006

References