Torpor

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Torpor is a physiological state of the body. It occurs in some small warm-blooded animals when food is scarce.

Some animals have periods of torpor every day. Tiny hummingbirds do.[1][2] So do some small mammals, for example, rodent species (such as mice), and bats.[3] Many small marsupial also have daily periods of torpor.[4]

Torpor is a well controlled thermoregulatory process. It is not the result of switching off thermoregulation.[5]

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References[change | change source]

  1. Hainsworth F.R. & Wolf L.L. 1970. "Regulation of oxygen consumption and body temperature during torpor in a hummingbird, Eulampis jugularis". Science 168 (3929): 368–369. doi:10.1126/science.168.3929.368. PMID 5435893. 
  2. "Hummingbirds". Migratory Bird Center, Smithsonian National Zoological Park. Archived from the original on 2008-02-14.
  3. Bartels W; Law B.S. & Geiser F. 1998. "Daily torpor and energetics in a tropical mammal, the northern blossom-bat Macroglossus minimus (Megachiroptera)". Journal of Comp. Physiol. B 168 (3): 233–239. doi:10.1007/s003600050141. PMID 9591364. https://www.researchgate.net/publication/13693505_Daily_torpor_and_energetics_in_a_tropical_mammal_the_northern_blossom-bat_Macroglossus_minimus_Megachiroptera_J_Comp_Physiol_B. 
  4. Geiser Fritz 1994. "Hibernation and daily torpor in marsupials – a review". Australian Journal of Zoology 42 (1): 1–16. doi:10.1071/zo9940001. https://www.researchgate.net/publication/248901967_Hibernation_and_Daily_Torpor_in_Marsupials_-_a_Review. 
  5. Geiser, Fritz 2004.. "Metabolic rate and body temperature reduction during hibernation and daily torpor". Annu. Rev. Physiol. (66): 239–274. doi:10.1146/annurev.physiol.66.032102.115105. PMID 14977403. http://www.annualreviews.org/doi/abs/10.1146/annurev.physiol.66.032102.115105.