Dormancy Flashcards
What are adverse conditions?
The cold/lack of food in winter and drought and extreme heat of summer create conditions which are beyond the tolerable limits of an animals normal metabolic rate
What is dormancy ?
Where is the development of an organism is temporarily suspended minimising metabolic activity and therefore saving energy until the environmental conditions can improve
Predictive dormancy
When organism becomes dormant before the arrival of adverse conditions
Consequential dormancy
When an organism becomes dormant after the arrival of adverse conditions
What is daily torper (predictive)?
Sleep, Occurs every day for part of the day
Involves a reduction in breathing rate, heart rate , metabolic rate and temperature
allows endotherms with high metabolic rate to save energy during a time where they would be unable to find food
Hibernation (productive consequential)
Used to escape cold weather and lack of food supplies during winter
Before hibernation the endotherms consume extra food which is laid down as fat store which can be used during hibernation
During hibernation body functions change dramatically, there is a lower metabolic rate, breathing rate, heart rate, and a temperature so minimal energy is expended
Aestivation (consequential)
The same as hibernation but used to escape excessive heat and drought