poikilotherms

This also works nicely for ailing aquarium fish and other poikilotherms.

A better way to die? | The Blog of Michael R. Eades, M.D. 2009

I started to defend the intrinsic value of poikilotherms (that's cold blooded creatures, for you non-zoologists out there, or, more precisely, animals that depend on an external heat source to adjust their internal temperature) but I stopped myself.

Arthur Rosenfeld: Caring For Pets Helps Us--And The World 2009

The role of nervous systems in temperature adaptation of poikilotherms.

Archive 2006-02-01 Darren Naish 2006

However, because these endotherms lack a layer of insulation and do not have a thermostat that regulates either heat production or heat dissipation, they are considered poikilotherms (Greek poikolos = changeable).

Endotherm 2008

Using this in vitro myogenesis system, we showed that the rate of muscle cell differentiation was strongly dependent on temperature, one of the most important environmental factors in the muscle growth of poikilotherms.

BioMed Central - Latest articles Jean-Charles Gabillard 2010

The current accepted terminology is poikilotherms which means "of varying temperature".

Museum Blogs 2010

So this doesn't seem to be a universal principle with poikilotherms, so when is different about snakes that causes this limitation.

Planet Atheism 2009

"Snakes are poikilotherms, depending on external sources of heat to maintain a given level of metabolic activity, and so available temperature means are limiting factors on how large they can grow."

Planet Atheism 2009

Snakes are poikilotherms, depending on external sources of heat to maintain a given level of metabolic activity, and so available temperature means are limiting factors on how large they can grow.

Planet Atheism 2009

Since snakes are poikilotherms that, unlike humans, need heat from their environment to power their metabolism, the researchers suggest that at the time the region would have had to be 30 to 34 degrees Celsius for the snake to have survived.

Naturejobs - All Jobs 2009