ANIMALES POIQUILOTERMOS PDF

I have decided to talk about the methods that fishes use to regulate body temperature. So, this week I will focus on cold-blooded fishes ectotherms or poikilotherms and the next one, on the totally or partially warm-blooded endotherms. Cold-blooded animals, like most of the fishes, have to have the ability to tolerate a wide range of temperatures eurithermal organisms. The reason is that they have to function in several body temperatures in order to survive environmental temperature changes. So, independently of their endotherm or ectotherm condition, at the same time, animals can be thermoregulator or not.

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TermorregulaciĆ³n de los insectos

It is the opposite of a homeotherm , an animal which maintains thermal homeostasis. While the term in principle can apply to all organisms , it is generally only applied to animals, and mostly to vertebrates. Usually the fluctuations are consequence of variation in the ambient environmental temperature. Many terrestrial ectotherms are poikilothermic. It is this distinction that often makes the term "poikilotherm" more useful than the vernacular "cold-blooded", which is sometimes used to refer to ectotherms more generally.

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Clima y actividad en animales poiquilotermos

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Poikilotherm

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