منابع مشابه
Hibernation and daily torpor in Australian mammals
Australia is the continent with the taxonomically most diverse mammal fauna. The approximately 300 species of Australian terrestrial mammals belong to the three extant mammalian subclasses the Monotremata (Prototheria egg-laying mammals, 2 species), Marsupialia (Metatheria pouched mammals, ~160 species), and Placentalia (Eutheria placental mammals, bats ~76 species, rodents ~65 species) (Menkho...
متن کاملAdvances in molecular biology of hibernation in mammals.
Mammalian hibernation is characterized by profound reductions in metabolism, oxygen consumption and heart rate. As a result, the animal enters a state of suspended animation where core body temperatures can plummet as low as -2.9 degrees C. Not only can hibernating mammals survive these physiological extremes, but they also return to a normothermic state of activity without reperfusion injury o...
متن کاملDaily torpor and hibernation in birds and mammals.
Many birds and mammals drastically reduce their energy expenditure during times of cold exposure, food shortage, or drought, by temporarily abandoning euthermia, i.e. the maintenance of high body temperatures. Traditionally, two different types of heterothermy, i.e. hypometabolic states associated with low body temperature (torpor), have been distinguished: daily torpor, which lasts less than 2...
متن کاملThe relationship between body mass and rate of rewarming from hibernation and daily torpor in mammals.
1. Rewarming rate from torpor and body mass were inversely related in 86 mammals ranging in body mass between 2 and 8500 g. 2. Most of the mammalian taxa investigated showed a similar change of rewarming rate with body mass. Only the insectivores showed a more pronounced increase in rewarming with a decrease in body mass than did the other taxa. The rates of rewarming of marsupials were similar...
متن کاملHibernation patterns in mammals: a role for bacterial growth? A. D. LUIS† and P. J. HUDSON
1. To examine the hypothesis that stimulation of immune function plays a role in periodic arousal from hibernation, bacterial growth during hibernation was estimated using a simple mathematical model of the general dynamics of bacterial abundance at body temperatures experienced during hibernation. 2. In the model, periodic arousals were important for animals infected with Salmonella at body te...
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ژورنال
عنوان ژورنال: Circulation
سال: 1961
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.24.2.434