Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store

Difference Between Hibernation and Aestivation

ffImage
hightlight icon
highlight icon
highlight icon
share icon
copy icon
SearchIcon

Understanding Hibernation and Aestivation Differences

Hibernation and aestivation are survival strategies used by animals to endure extreme environmental conditions. While both involve periods of dormancy, they differ in terms of when and why they occur.


Hibernation is a state of prolonged inactivity during the cold months. Animals reduce their metabolic rate, heart rate, and body temperature to conserve energy when food is scarce.


Aestivation is a similar dormancy period but occurs during hot and dry conditions, helping animals avoid dehydration and extreme heat.


Differences Between Hibernation and Aestivation

Feature

Hibernation

Aestivation

Definition

A state of dormancy during winter to conserve energy

A state of dormancy during summer to avoid extreme heat

Season

Occurs in winter

Occurs in summer

Purpose

Helps animals survive cold temperatures and food scarcity

Helps animals survive heat and drought conditions

Body Functions

Lowered metabolism, heart rate, and body temperature

Reduced metabolic activity, but body temperature remains more stable

Duration

Can last for several months

Usually lasts for a few weeks or months

Common in

Bears, bats, hedgehogs, ground squirrels, turtles

Snails, earthworms, amphibians, reptiles, lungfish

Effect on Animals

Slows down bodily functions to save energy

Prevents dehydration and overheating

Trigger Factors

Decreasing temperature and food availability

High temperatures and water scarcity

Reversibility

Animals wake up gradually as the temperature rises

Animals resume activity once conditions improve


Essential Study Materials for NEET UG Success

FAQs on Difference Between Hibernation and Aestivation

1. What’s the difference between aestivation and hibernation?

Aestivation occurs in hot and dry conditions, while hibernation happens in cold environments to conserve energy.

2. What is aestivation and hibernation in frogs?

Frogs hibernate in winter by burrowing into mud, while some species aestivate during hot months to avoid dehydration.

3. Is hibernation a form of sleep?

No, hibernation is not the same as sleep. It is a metabolic state where an animal significantly reduces bodily functions.

4. Do snakes hibernate or aestivate?

Snakes do both. In cold regions, they hibernate during winter, while in hot climates, they aestivate to avoid extreme heat.

5. What is an example of aestivation?

Lungfish burrow in mud and secrete a protective mucus layer to survive dry seasons through aestivation.

6. What is the difference between dormancy and hibernation?

Dormancy is a general term for inactivity, while hibernation is a specific type of dormancy during winter.

7. Can humans hibernate?

No, humans do not hibernate as our metabolism cannot slow down to such an extent.

8. What is the longest hibernating animal?

The Arctic ground squirrel hibernates for up to 8 months, lowering its body temperature below freezing.

9. Do bats hibernate?

Yes, some bat species hibernate in caves during winter to conserve energy.

10. What animals undergo aestivation?

Examples include snails, earthworms, some amphibians, crocodiles, and certain reptiles.

11. Do bears truly hibernate?

Bears enter a state of torpor, which is similar to hibernation but allows them to wake up occasionally.

12. What is dormancy?

Dormancy is a period of temporary metabolic inactivity in response to environmental changes.

13. Does aestivation mean sleep?

No, aestivation is not sleep; it is a physiological adaptation to extreme heat and drought.

14. What is summer sleep called?

Summer sleep is called aestivation, which helps animals survive hot and dry conditions.