Development of thermoregulation in Hawaiian brown noddies (Anous stolidus pileatus)
1991; Elsevier BV; Volume: 16; Issue: 6 Linguagem: Inglês
10.1016/0306-4565(91)90057-9
ISSN1879-0992
AutoresP. Mbaabu Mathiu, William R. Dawson, G. C. Whittow,
Tópico(s)Animal Nutrition and Physiology
Resumo1.|Oxygen consumption (V̇O2) and body temperture (Tb) 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 (Ta) between 28 and 38°C and between 15 and 43°C, respectively. Evaporative cooling by hatchings at Ta of 36–43°C was also measured. 2.|Throughout the late incubation stages studied, V̇O2 and Tb both varied directly with Ta in an ectothermic pattern. 3.|The hatchlings successfully regulated Tb at Ta between ca. 29 and 43°C. 4.|The functional basis of the abrupt increase in thermoregulatory capacity with hatching is discussed.
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