Photoperiodism
- Pronunciation
- /fuh-toh-peri-OD-ism/
- Category
- Behavior
- Singular
- Photoperiodism
- Plural
- Photoperiodisms
Definition
The biological response of an organism to changes in day length, used to regulate seasonal activities such as reproduction, migration, and hibernation.
Etymology
From Greek 'photo-', meaning 'light', and 'periodismos', meaning 'periodic occurrence'.
Example
The photoperiodism of many birds dictates when they begin to breed, with longer days triggering nesting behavior.
Related Terms
- Day length
- Seasonal
- Hormones
Usage Notes
Photoperiodism is a complex process involving hormonal changes and can vary between species.