Having an internal temperature that is controlled largely the by temperature of the external environment. For example, lizards are ectothermic and often bask in the sun to warm up.
a species that regulates its body temperature by exchanging heat with the surroundings. Ectothermic species are also called "cold-blooded."
Cold blooded, but able to control their body temperatures (thermoregulate), with considerable precision, depending on the species
depending upon warmth from outside the body
capable of maintaining body temperature by gaining outside heat outside itself (Morris 1992).
species which regulate their body temperature by behavioral means are said to be ectothermic or cold blooded (as opposed to endothermic or warm-blooded animals that maintain temperature by physiological means). For example, lizards are ectothermic; they must sit in the sun to warm themselves.
A term used for animals like reptiles and amphibians that are unable to regulate their body temperature. They require heat gradients to regulate their temperature.
possessing no internal means for controlling body temperature.
of animals except birds and mammals; having body temperature that varies with the environment
regulating body temperature by external thermal conditions
Using environmental heat sources to thermoregulate.
A creature that cannot regulate its own body temperature, rather it's regulated by the environment, so they often bask for heat, burrow, and hibernate.
Having a variable body temperature which closely matches that of the surroundings. "Cold-blooded".
e.g. cold-blooded, relays on surroundings temperature to maintain its own
Not able to heat the body from within. Iguanas and other reptiles are ectothermic, and therefore need to be provided with an outside heat source so they can regulate their body temperature. Also referred to as cold-blooded.
animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature
"Cold-blooded"-body temperature varies according to ambient external temperatures
Body temperature controlled by environment; no internal regulation.
Refers to animals that must actively regulate their own body temperature (see thermoregulation). Also known as "cold-blooded".
Having an internal body temperature that is dependent on the surrounding temperature. Most fishes, amphibians, and reptiles are ectothermic.
having a body temperature determined primarily by the temperature of the environment; cold-blooded; poikilothermic
Ectotherms are animals that rely upon the temperature and their behavior (like sunning themselves) to regulate their body temperature. Reptiles are ectothermic.