Fishionary

A blog about fish words!

By Abigail Lynch

A blog about fish words!

poikilotherm

Thermoregulation

June 19, 2015 by abby

Thermoregulation is the process by which an organism controls its internal temperature.  Fish have many different mechanisms for regulating their temperature.  Most fish are ectothermic, using their environmental temperature to manage their body temperature, but some fish are endothermic, having the metabolic ability to internally manage temperature.  Poikilothermic fish are ectotherms which have no control over … [Read more…]

Posted in: T Tagged: ectotherm, endotherm, eurytherm, poikilotherm, stenotherm, temperature, thermoregulation

Poikilotherm

June 5, 2015 by abby

Poikilothermic fish have no control over their body temperature and their core body temperature can fluctuate broadly.  While some ectothermic stenotherms thermoregulate their body temperature by inhabiting constant temperature environments, internal temperature of poikilotherms can widely vary.  

Posted in: P Tagged: poikilotherm, poikilothermic, stenotherm, temperature, thermoregulation

Ectotherm

April 24, 2015 by abby

Unlike endotherms which can metabolically control their own body temperature, ectotherms rely upon environmental temperatures for thermoregulation.  Most fish are ectotherms.  Ectothermy can be metabolically more efficient than endothermy because organisms do not have to expend any energy to self-regulate their body temperatures.  However, they are at the mercy of their environment more than endotherms because they … [Read more…]

Posted in: E Tagged: ectotherm, ectothermic, poikilotherm, stenotherm, temperature, thermoregulation

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