News tagged with hibernation
Hibernation is a state of inactivity and metabolic depression in animals, characterized by lower body temperature, slower breathing, and lower metabolic rate. Hibernating animals conserve food, especially during winter when food supplies are limited, tapping energy reserves, body fat, at a slow rate. It is the animal's slowed metabolic rate which leads to a reduction in body temperature and not the other way around.
Hibernation may last several days or weeks depending on species, ambient temperature, time of year, and fur on the animal's body. The typical winter season for a hibernator is characterized by periods of hibernation interrupted by sporadic euthermic arousals wherein body temperature is restored to typical levels. There is a hypothesis that hibernators build a need for sleep during hibernation more slowly than normally, and must occasionally warm up in order to sleep. This has been supported by some evidence in the arctic ground squirrel.
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Snakes in the wild serve as hosts for the deadly mosquito-borne Eastern equine encephalomyelitis Virus (EEEV), possibly acting as a "bridge" to the next season, according to researchers studying endemic areas in the Tuskegee ...
Diseases, Conditions, Syndromes Oct 01, 2012 | not rated yet | 0
When uncoupling proteins are active, mitochondria produce heat instead of ATP. This may be useful under certain circumstances, such as when an animal is hibernating. But non-hibernating animals also have them. Particularly ...
Medical research Aug 17, 2012 | not rated yet | 1 |
A hormone that plays a role in regulating body weight may be a key to understanding how hibernating bears can remain inactive for so long and not experience bone loss, according to a research team led by a ...
Medical research May 17, 2012 | not rated yet | 0
A premature baby who survived hours in a morgue refrigerator after being mistakenly declared dead has suffered a cardiac arrest and is in critical condition, Argentine doctors said Friday.
Other Apr 13, 2012 | 1 / 5 (1) | 0
How much calcium could a hibernating woodchuck's heart cells sequester, if a hibernating woodchuck's heart cells could sequester calcium? More than enough, it turns out, to protect the animals from cardiac arrhythmias ...
Cardiology Feb 23, 2012 | 2 / 5 (1) | 0
Hibernation is an essential survival strategy for some animals and scientists have long thought it could also hold promise for human survival. But how hibernation works is largely unknown. Scientists at the ...
Neuroscience Jul 26, 2011 | 4.9 / 5 (10) | 8 |