Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun
heterothermy
Etymologies
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Examples
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We hypothesized that aging could alter the energetics of daily heterothermia, and that the effects could differ according to season.
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Daily heterothermia is used by small mammals for energy and water savings, and seems to be preferentially exhibited during winter rather than during summer.
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In the gray mouse lemur (Microcebus murinus), a non-human primate species which exhibits daily heterothermia, we investigated the effects of exposures to 25 and 12°C on body composition, energy balance, patterns of heterothermia and water turnover in adult (N = 8) and aged animals
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During winter, adult animals at 12°C and aged animals at 25°C exhibited low levels of energy expenditure with minor modulations of heterothermia.
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Acclimation to summer prevented animals from deep heterothermia, even during aging.
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The major effects of cold were observed during winter, and were particularly pronounced in aged mouse lemurs which exhibited deep heterothermia phases.
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In conclusion, it appeared that the exhibition of shallow heterothermia allowed energy savings during winter in adult animals only.
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Aged animals exhibited deep heterothermia and increased levels of energy expenditure, impairing energy balance.
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Body composition was not significantly affected by age and could not explain the age-related differences in heterothermia patterns.
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Interestingly, increased energy expenditure and depth of heterothermia phases were strongly correlated.
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