Aestivation and Hibernation
2023 OCT 16
Preliminary >
Environment and Ecology > Basic ecology > Basics of ecology
- Aestivation and hibernation are ways that some animals cope with extreme weather conditions. In both cases, these strategies help animals conserve energy and survive harsh environmental conditions.
About Aestivation
- Estivation (or aestivation) is a biological phenomenon whereby the animal enters a long period of dormancy, or inactivity, in response to high temperature or drought-like conditions.
- They enter a cool underground burrow, crevice or cocoon and remain in a state of reduced metabolic activity to reduce the rate at which body consumes energy.
- Example, the West African Lungfish; Desert tortoises; land snails seal, some frogs etc.
About Hibernation
- Hibernation is when an animal slows its heart rate to save energy and survive the winter without eating much.
- Hibernation is like a long, deep sleep during the cold winter. Animals that hibernate, like bears, go into a state of reduced activity to save energy and survive when food is scarce. They find a cozy den or burrow, lower their body temperature, and sleep for months.
- Example: Bears, Bats, Hedgehog, etc.
PRACTICE QUESTION:
Which among the following does not hibernate to save energy during winter months?
(a) Bears
(b) Bats
(c) Hedgehog
(d) Desert tortoises
Answer
