Ectotherms

What happens with the body temp?

Fluctuates with that of the environment

Define ectotherm

Relies on external environmental heat sources to regulate body temperature, rather than generating metabolic heat

Where are they found?

In limited ranges of environments

What do they need less of?

Food to supply metabolic needs

What mechanisms are important for limiting variation in body temp?

Behavioural and structural

What are ectotherms?

Reptiles, insects and other invertebrates

Why do ectotherms living in water do not need to?

High heat capacity of water means temp of the environment does not change much