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Thermoregulation in the brown noddy (Anous stolidus)

Citation

Ellis, HI and Maskrey, M and Pettit, TN and Whittow, GC, Thermoregulation in the brown noddy (Anous stolidus), Journal of Thermal Biology, 20, (4) pp. 307-313. ISSN 0306-4565 (1995) [Refereed Article]

DOI: doi:10.1016/0306-4565(94)00060-V

Abstract

1. 1. Oxygen consumption ( V ̇O2 ), body temperature (Tb), respiratory frequency (f) and total evaporative water loss were measured in Brown Noddies exposed to air temperatures (Ta) between -0.2 and 41.9°C, in a climatic chamber. 2. 2. The thermoneutral zone of Ta was approx. 22-37°C and the V ̇O2 in the thermoneutral zone (1.031 ml/g h) was 77-80% of predicted values. 3. 3. The body temperature was characterized by its lability: even within the thermoneutral zone, there was a significant correlation with Ta. 4. 4. Exposure to low Ta resulted in shivering and a maximal increase in V ̇O2 of 129%. The minimal thermal conductance of the tissues and plumage below the lower critical Ta was 86% of the predicted value. 5. 5. At high Ta, thermal polypnea and open-beak panting were observed but the birds did not gular flutter. In some birds evaporative heat loss exceeded concurrent metabolic heat production. 6. 6. The features of thermoregulation in adult Brown Noddies are compared with those of the hatchling and also with thermoregulation in the related Sooty Tern. © 1995.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Physiology
Research Field:Physiology not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Maskrey, M (Associate Professor Michael Maskrey)
ID Code:4165
Year Published:1995
Web of Science® Times Cited:10
Deposited By:Anatomy and Physiology
Deposited On:1995-08-01
Last Modified:2011-08-22
Downloads:0

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