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*Development of thermoregulation in Hawaiian brown noddies (Anous stolidus pileatus)*

Authors:	P Mbaabu Mathiu William R Dawson and G Causey Whittow

Institution:	^a Department of Physiology, John A. Burns School of Medicine, University of Hawaii, 1960 East-West Road, Honolulu, HI 96822, USA ^b Museum of Zoology and Department of Biology, University of Michigan, Ann Arbor, MI 48109, U.S.A.

Abstract:	1. 1.\|Oxygen consumption ( ) and body temperture (T_b) of Hawaiian brown noddies (Anous stolidus pileatus Aves: Laridae]) during late incubation and in the first 24 h after hatching were measured at ambient temperatures (T_a) between 28 and 38°C and between 15 and 43°C, respectively. Evaporative cooling by hatchings at T_a of 36–43°C was also measured. 2. 2.\|Throughout the late incubation stages studied, and T_b both varied directly with T_a in an ectothermic pattern. 3. 3.\|The hatchlings successfully regulated T_b at T_a between ca. 29 and 43°C. 4. 4.\|The functional basis of the abrupt increase in thermoregulatory capacity with hatching is discussed. Author Keywords: Anous stolidus pileatus; bird; late incubation embryos; pipping; hatchlings; metabolic level; development of homeothermy; regulatory thermogenesis; evaporative cooling

Keywords:	Anous stolidus pileatus bird late incubation embryos pipping hatchlings metabolic level development of homeothermy regulatory thermogenesis evaporative cooling
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