• In 20 hibernators examined throughout their lives, concentrations of HPc in the blood started to decrease prior to hibernation and remained low throughout the inactive state. (redorbit.com)
  • The new findings could lead to "potential pharmacological applications in humans to the prevention of lethal diseases, such as hypothermia, ischemia, muscle atrophy, bacterial infection, and tumorigenesis, which has been observed during hibernation in hibernators," the researchers said. (redorbit.com)
  • Hibernation physiology and energy expenditure have been relatively well studied in large captive hibernators, especially rodents, but data from smaller, free-ranging hibernators are sparse. (biologists.org)
  • Hibernators do not feed during the hibernation period. (differencebetween.net)
  • Hibernation in an appropriate environment not only is important for the survival of hibernators in winter, but also is crucial for breeding in the following season for many hibernating species. (biomedcentral.com)
  • Our study revealed the crucial role of hibernation quality for oocyte maturation in the Chinese alligator and the underlying genetic and epigenetic mechanisms, and highlights the importance of habitat, and especially, the overwintering site, in the conservation of not only the Chinese alligator, but also other endangered hibernators. (biomedcentral.com)
  • However, during the hibernation season, arctic ground squirrels, like all other small mammalian hibernators, alternate between prolonged torpor (to 24 days) and periodic arousal episodes when they spontaneously rewarm to euthermic body temperatures (36-37 °C) for 10-15 h before returning to torpor. (mcponline.org)
  • We examined variation in the hibernation patterns of free-ranging little brown bats ( Myotis lucifugus ) using temperature-sensitive radio-transmitters. (biologists.org)
  • We observed the use of shallow torpor in the midst of periodic arousals, which may represent a unique adaptation of bats for conservation of energy during the most costly phase of hibernation. (biologists.org)
  • This study provides new information on the energetics of hibernation in an under-represented taxon and baseline data important for understanding how white-nose syndrome, a new disease devastating populations of hibernating bats in North America, may alter the expression of hibernation in affected bats. (biologists.org)
  • Temperate-zone bats may spend energy reserves differently from rodents during hibernation. (biologists.org)
  • Bats were collected at the beginning (Fall), middle (Winter), and end (Spring) of hibernation from a permanent overwintering cave, and analyzed within several days of capture. (nih.gov)
  • Dataloggers were retrieved at the end of the hibernation season and complete profiles of skin temperature data were available from 83 bats, which were categorized as: (1) unaffected, (2) WNS-affected but alive at time of datalogger removal, or (3) WNS-affected but found dead at time of datalogger removal. (usgs.gov)
  • Another reason for the avoidance of torpor during late summer and early autumn can be that spermatogenesis in bats can be delayed when resting metabolic rate is depressed, i.e. during torpor and hibernation. (wikipedia.org)
  • Common noctule bats hibernate in winter, and sometimes congregate in hibernation colonies of up to 1000 individuals. (wikipedia.org)
  • Little brown bats in NY hibernation cave. (usgs.gov)
  • Imagery from temperature-sensing cameras showing bats in hibernation. (usgs.gov)
  • This new footage suggests that bats who warm up from hibernation together throughout the winter may be better at surviving white nose syndrome, a disease caused by a cold-loving fungus ravaging insect-eating bat populations in the United States and Canada. (usgs.gov)
  • Government officials have been working to manage the disease, which affects bats during their hibernation in the winter months, for at least two years, though mostly under different agencies, says Jeremy Coleman, a FWS biologist coordinating the government's white-nose syndrome response. (nature.com)
  • Increased frequency of arousal from torpor described among hibernating bats with late-stage WNS is thought to accelerate depletion of fat reserves, but the physiological mechanisms that lead to these alterations in hibernation behavior have not been elucidated. (usgs.gov)
  • The mass deaths are difficult to quantify because wild bats are almost impossible to count, but to scientists monitoring hibernation sites, serious declines are as undeniable as they are unprecedented. (boston.com)
  • The hope is that a bacterial spray applied to bats during hibernation could suppress the fungus enough to help the bats survive the winter. (cavingnews.com)
  • Mammalian hibernation provides a good model for studying the control of central activity by neurotransmitters/neuromodulators because the range of CNS activity displayed across the nonhibernating versus hibernating states is larger than that of any other mammalian CNS. (jneurosci.org)
  • To be or not to be: the regulation of mRNA fate as a survival strategy during mammalian hibernation. (kenstoreylab.com)
  • Biochemical adaptations of mammalian hibernation: exploring squirrel as a perspective model for naturally induced reversible insulin resistance. (kenstoreylab.com)
  • Out cold: biochemical regulation of mammalian hibernation. (kenstoreylab.com)
  • Mammalian hibernation: physiological, cell signaling and gene controls on metabolic rate depression. (kenstoreylab.com)
  • Mammalian hibernation: differential gene expression and novel application of epigenetic controls. (kenstoreylab.com)
  • Neuronal activity underlying various phases of the mammalian hibernation cycle was investigated using the 14 C-2-deoxyglucose (2DG) method. (elsevier.com)
  • These results, coupled with characteristic changes in ordinal rank of the 96 brain regions in each phase of hibernation, support the concept that mammalian hibernation is an active, integrated orchestration of neurophysiological events rather than a state entered through a passive process. (elsevier.com)
  • Mammalian hibernation involves complex mechanisms of metabolic reprogramming and tissue protection. (mcponline.org)
  • Hibernation , a state of greatly reduced metabolic activity and lowered body temperature adopted by certain mammals as an adaptation to adverse winter conditions. (britannica.com)
  • Hibernation is a prominent feature in the annual cycle of many small mammals, but our understanding of its influences lags behind that for phenological traits in many other taxa. (wiley.com)
  • Hibernation in mammals such as the rodent hibernator Citellus lateralis is a physiological state in which CNS activity is endogenously maintained at a very low, but functionally responsive, level. (jneurosci.org)
  • Mammals that enter deep hibernation experience extreme reductions in body temperature and in metabolic, respiratory, and heart rates for several weeks at a time. (mcponline.org)
  • This conservation among mammals is significant in that it suggests it will be possible to utilize new bioinformatics approaches despite the lack of genomic information for ground squirrel, and also that it provides basis for medical applications that derive from an understanding of hibernation ( 13 ). (mcponline.org)
  • Hibernation is the key to winter survival for many small mammals and for one large one (bears). (kenstoreylab.com)
  • Nearly two decades of gene expression studies on hibernating mammals have suggested that the hibernation phenotype results from the differential expression of existing genes rather than the evolution of novel genes ( 1 , 5 , 6 ). (mcponline.org)
  • Hibernation is a state of dormancy that is common in mammals during cold seasons. (mcsweeneys.net)
  • Hypometabolism can be a seasonal phenomenon (e.g. winter hibernation in small mammals) or linked with a particular life stage (e.g. an obligate diapause at one stage of insect development) so that circannual or developmental considerations are often involved. (biologists.com)
  • 1. Arterial blood was sampled at 15 min-intervals in European hamstersCricetus cricetus fitted with indwelling catheters, from deep hibernation to full arousal. (semanticscholar.org)
  • Deep hibernation corresponded to a respiratory acidosis: pH*=7.01±0.01 (mean±SE),P * CO2=160±4 Torr (n=9 animals). (semanticscholar.org)
  • Relative 2DG uptake (R2DGU) values were computed for 96 brain regions across 7 phases of the hibernation cycle: euthermia, 3 body temperature (T b ) intervals during entrance into hibernation, stable deep hibernation, and 2 T b intervals during arousal from hibernation. (elsevier.com)
  • abstract = "Background: Short-term myocardial hibernation of 3 hours resulting from a moderate resting coronary flow reduction has been reproduced in pigs. (elsevier.com)
  • In some desert regions, certain animals escape the rigours of summer drought by entering a torpid state, estivation , that is similar in many ways to hibernation. (britannica.com)
  • Estivation is like hibernation in hot weather. (howstuffworks.com)
  • 8 Hibernation and Estivation Striped TurtleStriped Turtle hibernates. (slideplayer.com)
  • Explain why some organisms must constantly consume food to maintain their metabolism and support themselves whereas some organisms can consume a large amount of food at one time and still maintain their metabolism over the course of weeks, such as in hibernation and estivation? (slideplayer.com)
  • An organism undergoes hibernation or estivation in order to avoid extreme conditions of heat or coldness. (slideplayer.com)
  • Though very little energy is spent during hibernation/estivation, the most energy is spent during the waking period. (slideplayer.com)
  • Additionally, the severity of cutaneous Gd infection correlated with the number of arousal episodes from torpor during hibernation. (usgs.gov)
  • Superficial hibernation, apparently a compromise between the minimum energy requirements of a deep hibernator and the high energy expended by an animal that remains active during the winter, saves energy without the stress of hibernation. (britannica.com)
  • The term hibernation is commonly applied to all types of winter dormancy in vertebrate animals. (britannica.com)
  • Hibernation is a way that some animals deal with the harshness of winter. (britannica.com)
  • Hibernation allows animals from bears to rodents to survive unscathed -- in a state of suspended animation -- under the harshest of winter conditions. (redorbit.com)
  • The annual hibernation cycle is characterized by shifts between summer euthermy with tissue anabolism and accumulation of body fat reserves, and winter heterothermy with fasting and tissue catabolism. (biologists.org)
  • Body composition analysis by ECHO MRI showed lean tissue preservation throughout hibernation amid declining fat mass by end of winter. (biologists.org)
  • Production of approximately 500 of these is increased or decreased during winter: Fewer of the proteins used to break down carbohydrates and form fatty acids are available during hibernation, while more proteins are formed for breaking down fatty acids. (phys.org)
  • Hibernation at these latitudes is thought to avoid too many days in winter below 0 °C. [13] At the beginning of winter, usually in November but this strongly dependent on the ambient temperatures, N. noctula start to hibernate in large groups with both sexes in one roost. (wikipedia.org)
  • The data revealed that in the breeding season, female alligators were more strongly affected in terms of gene expression than males by non-hibernation because of overwintering in a warm room, especially for genes related to oocyte maturation, and this effect commenced in winter with the downregulation of STAR , which is the rate limiting factor of steroid biosynthesis. (biomedcentral.com)
  • Hibernation is an adaptive strategy adopted by many animals to survive the cold and foodless winter [ 1 ]. (biomedcentral.com)
  • Like any good tortoise, it has gone into hibernation for the winter months and will most probably emerge some time in the spring refreshed and renewed. (tortoiseknowsbest.com)
  • These high levels of androgens help both males and females to increase lean body mass (i.e. muscle) by about 25 percent in the months leading up to winter hibernation - mass which is then consumed as they hibernate. (eurekalert.org)
  • The metabolism of basking sharks allows survival of winter food limitations via torpor, a hibernation-like state. (asknature.org)
  • Last week, the sanctuary's resident bears awoke from winter hibernation. (parrysound.com)
  • With Spring just around the corner, it's finally time to wake our tresses from their winter hibernation and rejuvenate them with some fresh color. (forbes.com)
  • This coupled with the fact that the hedgehogs' diet of worms, insects, slugs and snails disappears during winter is the primary cause for hibernation. (egelopvangdenhaag.nl)
  • On warm, rainy spring nights frogs, salamanders and toads awake from winter hibernation and begin migrating to vernal pools for courtship and breeding. (clevelandmetroparks.com)
  • Hibernation is a period of inactivity in the winter months. (slideplayer.com)
  • The winter hibernation in northern North America is very important because of how long and extreme it can be. (fieldofscience.com)
  • So the question was posed, is a wood frog alive during winter hibernation? (fieldofscience.com)
  • Hibernation research has discovered examples of differential gene expression at the mRNA and protein levels ( 5 - 12 ). (mcponline.org)
  • Recently, several laboratories have utilized large scale genomics approaches to investigate differential gene expression during hibernation in different ground squirrel species ( 7 , 8 ). (mcponline.org)
  • Daily torpor (which really ought to be called nightly torpor) is like low-grade short-term hibernation. (howstuffworks.com)
  • This study was designed to determine whether any structural changes accompany short-term hibernation caused by a moderate flow reduction maintained for 24 hours and whether any such structural alterations are reversible after reperfusion. (elsevier.com)
  • Here we use a proteomic approach to compare and identify differentially expressed liver proteins from two seasonal stages in the golden-mantled ground squirrel (summer and entrance into torpor) using two-dimensional gels followed by MS/MS. Eighty-four two-dimensional gel spots were found that quantitatively alter with the hibernation season, 68 of which gave unambiguous identifications based on similarity to sequences in the available mammalian database. (mcponline.org)
  • Resuming from standby is faster than resuming from hibernation, but leaving your notebook running until it goes to standby and then later goes into hibernation via Hybrid Sleep wastes battery power. (sony.co.uk)
  • Now the macbook goes into hibernation every time it reaches 5% and my work gets saved. (ifixit.com)
  • eight seconds later powers back up with 'apple logo' and continues this process until the battery power is drained, or until I hold the home button for 10 seconds, at which point it stops trying to reboot and goes into hibernation until I plug into the charger or computer. (ifixit.com)
  • 00:01:58,500 to prepare for hibernation. (nationalgeographic.com)
  • To prepare for hibernation, animals need to accumulate as much fat as possible in the months leading up to this point. (mcsweeneys.net)
  • While common in nature, the biological mechanisms that underlie torpor and hibernation are still poorly understood. (eurekalert.org)
  • Further, our understanding of the molecular mechanisms underlying the effects of hibernation on reproduction is limited. (biomedcentral.com)
  • Thus, the Chinese alligator can serve as an ideal model to study the role of hibernation in reproduction, and the underlying molecular mechanisms. (biomedcentral.com)
  • The genetic and molecular mechanisms of regulation and tolerance of hibernation and the functional significance of arousal episodes remain central questions in hibernation research. (mcponline.org)
  • In addition, understanding the molecular mechanisms of hibernation has the potential of leading to the development of novel preventive and therapeutic approaches to the treatment of human maladies such as trauma, cardiovascular disease, stroke, and ischemia/reperfusion injury. (mcponline.org)
  • Thus, hamster neuroprotective mechanisms supporting functional recovery were enhanced by cold temperatures and by hibernation. (elsevier.com)
  • Although the functions of HP remain to be clarified, the current observations lead us to propose the involvement of the protein complex in the regulation of energy metabolism and/or biological defenses during hibernation--crucial events for adapting to the severe physiological state," Ohtsu said. (redorbit.com)
  • Through behaviors like hibernation, animals such as bears, frogs and hummingbirds can survive harsh winters, droughts, food shortages and other extreme conditions by essentially entering into biological stasis, where metabolism, heart rate and breathing slow to a crawl and body temperature drops. (eurekalert.org)
  • Hibernation is a physiological state characterized by an extreme reduction of various functions, such as body temperature and metabolism. (jneurosci.org)
  • With a careful-to-be science aligned and Tolerance Principled flexibility of mind, the word 'hibernation' can be _broadly_ redefined and viewed as: a more or less precisely local (or, conversely, global) metabolism dampening function to the point of an adaptive *cancelling* of futile behavioural responses in face of a corresponding kind (i.e. (bio.net)
  • One theory as to why this method may work is because consuming fewer calories induces the body to enter a mini-hibernation state and slows metabolism. (thedoctorstv.com)
  • With the onset of colder temperatures - a time when food items become scarce - activity levels drop, metabolism slows down, and hibernation mode sets in. (petmd.com)
  • Hibernation (also known as suspend to disk, or Safe Sleep on Macintosh computers) in computing is powering down a computer while retaining its state. (wikipedia.org)
  • Since Windows 95 supports only Advanced Power Management (APM), hibernation is called Suspend-to-Disk. (wikipedia.org)
  • Before a long hibernation, animals eat their way into obesity, essentially becoming type 2 diabetic. (metafilter.com)
  • low temperatures in November and December are usually the trigger for adult hedgehogs to begin the long hibernation. (egelopvangdenhaag.nl)
  • Most desktops also support hibernation, mainly as a general energy saving measure and allows for replacement of a removable battery quickly. (wikipedia.org)
  • Google and Apple mobile hardware (Android, Chromebooks, iOS) do not support hibernation. (wikipedia.org)
  • Windows 2000 is the first Windows to support hibernation at the operating system level (OS-controlled ACPI S4 sleep state) without special drivers from the hardware manufacturer. (wikipedia.org)
  • Most desktops also support hibernation, mainly as a general energy saving measure. (tfode.com)
  • Warning: If you have problems with some of hibernated apps, disable particular hibernation and restart particular app. (android-zone.ws)
  • It is evident that both bears burned a huge number of calories maintaining basic metabolic functions during this particular hibernation. (parrysound.com)
  • The researchers earlier found that concentrations of "hibernation-specific protein" complex (HPc) decline in the blood of hibernating chipmunks. (redorbit.com)
  • Functional roles are proposed to explain the changes seen in protein levels and their potential influence on the phenotype of hibernation. (mcponline.org)
  • This report describes their basic lung structure and the extent to which this organ is protected from protein depletion during hibernation. (nih.gov)
  • Although both the heart and lungs lost 13% of their fresh weights during hibernation, compared to 25% for the liver, the lung contents of DNA (0.14 mg) and blood-free protein (7.38 mg) were not altered significantly. (nih.gov)
  • Consequently, the squirrels must use other possibilities to regulate their protein production during hibernation. (phys.org)
  • Large scale proteomics studies on hibernation have lagged behind largely because of the lack of an adequate protein database specific for hibernating species. (mcponline.org)
  • We constructed a ground squirrel protein database for protein identification and used a label-free shotgun proteomics approach to analyze protein expression throughout the torpor-arousal cycle during hibernation in arctic ground squirrels ( Urocitellus parryii ). (mcponline.org)
  • Any incipient hibernation, shown for instance by the arctic ground squirrel, proves abortive, as the animals will shiver themselves awake after only a few days. (britannica.com)
  • During hibernation a ground squirrel lowers its body temperature below freezing and stays that way for weeks, virtually brain dead, with no detectable brain waves or signs of breathing. (eurekalert.org)
  • To a ground squirrel, hibernation probably feels like long stretches of icy stupor punctuated with short, costly-naps--proof, Barnes says, that sleep is precious indeed. (eurekalert.org)
  • According to Jun Yan from the Partner Institute of the Max Planck Society and the Chinese Academy of Sciences (CAS) in Shanghai, this makes the Arctic ground squirrel extremely suitable for studying the changes that occur at molecular level during rodent hibernation. (phys.org)
  • Yan has been working closely with Brian Barnes, a scientist from Institute of Arctic Biology in Fairbanks Alaska on the hibernation of Arctic ground squirrel. (phys.org)
  • We subsequently designed Illumina BeadArrays that measured expression of about 1,400 genes in five AGS tissues using probes based on pooled mRNA sequences of three ground squirrel species, comparing four hibernation stages during spontaneous torpor-arousal cycles with non-hibernating AGS. (mcponline.org)
  • The discovery of a possible hibernation hormone in the brain may unlock the mystery behind the dormant state, researchers reported in the April 7, 2006 issue of Cell. (redorbit.com)
  • Now, Harvard Medical School neuroscientists have discovered a population of neurons in the hypothalamus that controls hibernation-like behavior, or torpor, in mice, revealing for the first time the neural circuits that regulate this state. (eurekalert.org)
  • Depending on the duration of the hypometabolic state, the torpor can be daily torpor (short-term) or hibernation (long-term). (differencebetween.net)
  • Hibernation is a state of regulated hypothermia that allows animals to save energy at prolonged periods of low temperatures. (differencebetween.net)
  • This hibernation-related apparent augmentation of histaminergic neurotransmission was particularly evident in the hypothalamus and hippocampus, areas of importance to the control of the hibernating state, in which tele -methylhistamine levels were increased more than threefold. (jneurosci.org)
  • If HA is involved in hibernation, changes in histaminergic innervation, histamine levels, and turnover, as well as responsiveness of target neurons can be expected to take place in connection with this physiological state. (jneurosci.org)
  • The Caenorhabditis elegans dauer state is a hibernation-like state of diapause that displays a dramatic reduction in spontaneous locomotion. (jneurosci.org)
  • PhysOrg.com) -- In a new study published in the Proceedings of the National Academy of Sciences, infectious disease biologist Dylan George from Colorado State University reports that a bat s hibernation is what keeps the rabies virus alive and does not wipe out the bat before the virus can spread. (esciencenews.com)
  • These scientists think that all animals have a latent ability to survive in a state of hibernation, including humans. (howstuffworks.com)
  • Hibernation saves your computer's current state to disk and then turns the computer off. (sony.co.uk)
  • The insulin-like signaling in worms also controls the animals' entry into a state of hibernation when food is limited or other environmental extremes exist. (eurekalert.org)
  • The increase in worm lifespan associated with this hibernation state may be very similar to the increase in mammalian longevity caused by reduced food intake. (eurekalert.org)
  • This approach combines the benefits of sleep mode and hibernation: The machine can resume instantaneously, and its state, including open and unsaved files, survives a power outage. (tfode.com)
  • Finally, DNA methylome changes, especially hypomethylation, were found to play an important role in the alterations in ovarian function-related gene expression induced by non-hibernation. (biomedcentral.com)
  • Previous gene expression studies of hibernation have mainly focused on changes at the mRNA level. (mcponline.org)
  • The researchers also found that blocking the activity of one of the HP complex proteins in the brain with antibody greatly decreased the hibernation time during which the chipmunks maintained a lowered body temperature, suggesting its critical role in the brain's capacity for dormancy. (redorbit.com)
  • Instead, current data lend credence to the proposed concept that differential expression of mammalian genes provides the basis for the phenotype of hibernation, rather than newly derived hibernation-specific proteins and enzymes ( 12 ). (mcponline.org)
  • In this way, they discovered that the squirrels boost or suppress the production of many proteins during hibernation. (phys.org)
  • Levels of gap junction proteins in coronary arterioles and aorta of hamsters exposed to the cold and during hibernation and arousal. (semanticscholar.org)
  • Among them, 517 proteins showed significant differential expression comparing animals sampled after at least 8 days of continuous torpor (late torpid), within 5 h of a spontaneous arousal episode (early aroused), and 1-2 months after hibernation had ended (non-hibernating). (mcponline.org)
  • Our results suggest that there is substantial post-transcriptional regulation of proteins during torpor-arousal cycles of hibernation. (mcponline.org)
  • During hibernation, arousals to warm (euthermic) body temperatures are normal but deplete fat stores. (usgs.gov)
  • The tissue levels of histamine and its first metabolite tele -methylhistamine were also elevated throughout the brain of hibernating animals, suggesting an increase in histamine turnover during hibernation, which occurs without an increase in histidine decarboxylase mRNA expression. (jneurosci.org)
  • As hibernation factors endow animals with an incredible ability to cope under otherwise lethal conditions--ratcheting down their metabolic rate to survive on limited energy reserves and withstanding extreme cardiovascular and oxygen stresses--the candidate hormone might also pave the way toward clinical therapies that lend humans the same kind of protection, they added. (redorbit.com)
  • During hibernation, the metabolic rate is about 6% of the basal metabolic rate. (differencebetween.net)
  • Hibernation refers to a season of heterothermy that is characterized by low body temperature, slow breathing and heart rate, and low metabolic rate. (interactive-biology.com)
  • Animals in hibernation often drop to extremely low core body temperatures in order to decrease its metabolic rate, allowing for survival over long periods of time. (slideplayer.com)
  • however, some early bumblebees are able to go through two cycles in a year if young queens skip hibernation and start a colony sooner. (wikipedia.org)
  • It is a place of unknowing, of quiet, of coldness, of hibernation, even of death if one has not stored up enough to last. (healthy.net)
  • Other animals dig below the frost line and hibernate in a relatively warm 0° C. Because Arctic ground squirrels can't get below the permafrost, they have to spend their eight-month hibernation at temperatures as low as -23° C. (eurekalert.org)
  • The hibernation complex might also play a role in the seasonal behavior changes of animal species that do not hibernate, the researchers suggested. (redorbit.com)
  • Hibernation is an extreme response to a seasonal environment, yet we knew almost nothing about how it is timed, nor how vital cellular functions are sustained in the face of plummeting body temperature," wrote Michael Hastings in a preview. (redorbit.com)
  • Hibernation is an extended seasonal form of this. (eurekalert.org)
  • How bear bodies handle insulin seems to be seasonal, with increases in resistance during hibernation and increases in sensitivity during warmer months. (mercola.com)
  • This has been an important and exciting partnership that promises transformative changes to how trauma and surgical care are provided,' said Brian Barnes, study co-author, long-time hibernation researcher and director of the UAF Institute of Arctic Biology. (scienmag.com)
  • Torpor can last from several hours (daily torpor, less than 24 hours) to several months (hibernation). (differencebetween.net)
  • Scientists have attempted for decades to identify substances responsible for hibernation in the blood and organs of hibernating animals but have met with little success, the researchers said. (redorbit.com)
  • Scientists have suggested that hibernation therapy might effectively preserve donor organs for weeks or months. (redorbit.com)
  • It's a hibernation thing, and it has intrigued scientists for decades. (mercola.com)
  • If hibernation is about conserving energy, why do animals waste crucial reserves bringing their body temperature back up to normal? (eurekalert.org)
  • The team now reports evidence that the level of HPc in the brain increases at the onset of hibernation independently of changes in body temperature. (redorbit.com)
  • The hibernation is characterized by slowing metabolic processes, lowering body temperature, and inhibiting breathing. (differencebetween.net)
  • During hibernation all body functions drop to low levels -- for example, in hibernating ground squirrels, core body temperature can fall to 5°C, heart rate drops to only 5-10 beats per minute (normal resting values are 350-400 beats per minute), breathing drops from greater than 40 to less than 1 breath per minute and breathing patterns can include minutes to hours of breath-hold (called apnea). (kenstoreylab.com)
  • The process typically involves burrowing into the ground, where the temperature stays cool, and reducing metabolic activity in a similar manner to hibernation. (howstuffworks.com)
  • Generally, queens emerge from hibernation in early spring having been fertilized in late summer and they find a site to begin their nest. (wikipedia.org)
  • When they emerge from hibernation, timber rattlesnakes bask in the sun , which appears to help control the lesions. (nature.org)
  • By use of monoclonal antibodies, recognizing different epitopes distributed over the whole length of the titin molecule, we were able to detect changes in its molecular organization as a result of chronic hibernation. (nih.gov)
  • However, a recent study on the Wyoming toad ( Anaxyrus baxteri ) revealed that hibernation is not essential for optimal sperm metrics in this species [ 13 ]. (biomedcentral.com)
  • Some species will stop eating two or three weeks before hibernation, suddenly resistant to the pangs of hunger even while maintaining their regular level of activity. (metafilter.com)
  • Some species lose memory during hibernation. (metafilter.com)
  • Hibernation is a survival strategy of regulated metabolic suppression adopted by a wide range of mammalian species to survive environmental conditions of low or unpredictable food availability ( 1 , 2 ). (mcponline.org)
  • To answer these questions, we must first study the fundamental biology of torpor and hibernation in animals," Hrvatin said. (eurekalert.org)
  • whereas during the hibernation season this expression pattern could change to reflect the unique biochemistry of hibernation. (mcponline.org)
  • How 'selective Hibernation' can be seen to codetermine behaviour and the content of consciousness. (bio.net)
  • The answers to: Why 'selective Hibernation? (bio.net)
  • Windows Me, the last release in the Windows 9x family, also supports OS controlled hibernation and requires disk space equal to that of the computer's RAM. (wikipedia.org)
  • Cardiologist Dr. Peter Godsk Jorgensen of Copenhagen presented a study in which he was able to confirm earlier research that the heart rate of bears decreases tremendously during hibernation - from around 75 beats per minute to as few as 10. (mercola.com)
  • When hibernation begins, the computer saves the contents of its random access memory (RAM) to a hard disk or other non-volatile storage. (wikipedia.org)
  • This hibernation mode is 'deep' and it saves al the RAM content as an image to the disk. (ifixit.com)
  • Muscle volume in 13-lined ground squirrels ( Ictidomys tridecemlineatus ) calculated from MRI upper hindlimb images (n=6 squirrels, n=10 serial scans) declined from hibernation onset, reaching a nadir in early February. (biologists.org)
  • Neuroscientists have discovered neurons that control hibernation-like behavior, or torpor, in mice. (eurekalert.org)
  • We used a multi-generation pedigree and detailed phenotypic records, spanning 18 years, to estimate the quantitative genetic influences on the timing of hibernation emergence in a wild population of Columbian ground squirrels ( Urocitellus columbianus ). (wiley.com)
  • The date of hibernation emergence has been hypothesized to have evolved so as to synchronize subsequent reproduction with upcoming peaks in vegetation abundance. (wiley.com)
  • renders it a good candidate transmitter for the control of hibernation, wherein brain homeostasis is substantially altered, and major changes in electrical and neurochemical activity occur. (jneurosci.org)