Poikilotherm

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The Common frog is a poikilotherm an is able tae function ower a wide range o body core temperatures.

A poikilotherm is an organism whose internal temperatur varies considerably. It is the opposite o a homeotherm, an organism which maintains thermal homeostasis. Uisually the variation is a consequence o variation in the ambient environmental temperatur. Mony terrestrial ectotherms are poikilothermic.[1] However some ectotherms remain in temperatur-constant environments tae the pynt that they are actually able tae maintain a constant internal temperatur (i.e. are homeothermic). It is this distinction that eften maks the term "poikilotherm" mair uisefu than the vernacular "cauld-bluidit", which is sometimes uised tae refer tae ectotherms mair generally.

References[eedit | eedit soorce]

  1. Milton Hildebrand; G. E. Goslow, Jr. Principal ill. Viola Hildebrand. (2001). Analysis of vertebrate structure. New York: Wiley. p. 429. ISBN 0-471-29505-1.