Torpor
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, including hummingbirds.[1][2] So do some small mammals, for example, rodent species (such as mice), and bats.[3] Many small marsupials also have daily periods of torpor.[4]
Torpor is a well controlled thermoregulatory process. It is not the result of switching off thermoregulation.[5]
Torpor Media
Anna's hummingbird (Calypte anna) in nocturnal torpor during a cold winter night (−8 °C (18 °F) near Vancouver, British Columbia. The bird remained in torpor with an unchanged position for more than 12 hours.
Related pages
References
- ↑ Hainsworth F.R. & Wolf L.L. 1970 (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. S2CID 30793291.
- ↑ "Hummingbirds". Migratory Bird Center, Smithsonian National Zoological Park. Archived from the original on 2008-02-14.
- ↑
Bartels W; Law B.S. & Geiser F. 1998 (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. S2CID 16870476.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Geiser Fritz 1994 (1994). "Hibernation and daily torpor in marsupials – a review". Australian Journal of Zoology. 42 (1): 1–16. doi:10.1071/zo9940001. S2CID 84914662.
- ↑ Geiser, Fritz 2004. (2004). "Metabolic rate and body temperature reduction during hibernation and daily torpor". Annu. Rev. Physiol. 66 (66): 239–274. doi:10.1146/annurev.physiol.66.032102.115105. PMID 14977403.