No matter what the conditions outside might be, homeothermic
beings are able to move about, take care of their daily business, and defend themselves against danger.
The intestinal tract of homeothermic
animals, as well as that of human, whether healthy or not, is generally colonized by E.
Salmon sharks are not only endothermic, but also appear to be homeothermic
(i.e., defend a specific body core temperature regardless of ambient temperature) (Goldman et al., 2004).
The energy used in basal metabolic activities can be determined by measuring the heat lost from the surface of a stress-free, fasting, homeothermic
The evolution of animals is especially easy to interpret in this way: primitive detrivores acquired movement to burrow into gradients; then their descendants acquired mouths and claws to hurry the disintegration; then predators, as well as herbivores, evolved to hurry the production of detritus; then some of these became homeothermic
Timing of sampling can be crucial in acquiring reliable data and sufficient sample sizes, especially with homeothermic
species, which enter some form of torpor in response to climatic stress conditions.
A more probable explanation for the difference in contaminant levels between herring gulls and burbot on Great Slave Lake is that the former is homeothermic
, resulting in higher energy requirements and thus higher dietary intake of contaminants (Braune and Norstrom, 1989).
This unusual avian trait contrasts with the homeothermic
pattern exhibited by most birds, in which a set [T.sub.b] is maintained within narrowly defined limits, despite larger variations in [T.sub.a] (Bligh and Johnson 1973), but it has been reported in a few tropical species such as sunbirds (Nectariniidae, Passeriformes; Cheke 1971, Prinzinger et al.
Increases in body temperature during the hottest hours of the day also occur in other homeothermic
animals such as some day-active mammals and birds.
Temperature relations and underwater endurance of the smallest homeothermic
diver, the water shrew.
The biological half-time of radioactive Cs in poikilothermic and homeothermic
animals group when it is cold in order to reduce heat loss and avoid predators while foraging (Pulliam et al., 1974; Trune and Slobodchikoff, 1976; Caraco, 1979; Ruf et al., 1991).