homeotherm


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homeotherm

[′hō·mē·ə‚thərm]
(physiology)
An endotherm that maintains a constant body temperature, as do most mammals and birds.
References in periodicals archive ?
In the animal kingdom the other homeotherms are mammals such as goats and cows and so forth, as well as birds.
During these cruises we made observations on all homeotherms encountered; we surveyed several islands used for breeding by seabirds, and set rodent traps on 5 islands.
Therefore, this shift in diet may lead to energy constraints that can impose a digestive bottleneck in small homeotherms.
However, because we are homeotherms - meaning internal temperatures must be regulated - a large variance from the normal resting body temperature of 37 degrees celsius can be catastrophic.
Although Bergmann's rule was originally proposed for homeotherms, Bergmannian (and converse Bergmannian) clines occur in invertebrate and vertebrate ectotherms (Ray 1960; Masaki 1967, 1978; Honek 1993; Atkinson 1994; Mousseau 1997; Arnett & Gotelli 1999; Brisola Marcondes et al.
A general decrease of weight specific metabolic rate in the course of ageing is reported for homeotherms and insects (see for review McCarter 1995), however, with few exceptions (O'Connor et al.
1993) because the long intrauterine period of some homeotherms would decrease the impact of environmental conditions.
Homeotherms such as elk must maintain a stable body temperature and use of thermal cover is one way elk balance heat gains and losses (Thomas et al.
Birds are homeotherms, having the ability to maintain their body temperature within a narrow range.
Of the "rules" that have been formulated to explain the effects of temperature or latitude on growth or size, one of the best known is Bergmann's rule, describing increased size of homeotherms as an adaptive response of body surface: volume ratio to low temperatures (Vermeij 1978).