Desert tortoises shut down metabolic processes for long periods during very hot and dry summer conditions. What form of dormancy is this?

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Aestivation is a form of dormancy in animals that is characterized by a shut down of metabolic processes during hot and dry summer conditions. This enables the animal to conserve water and survive until more favorable conditions return. Diapause is a form of dormancy typically used by insects to survive unfavorable environmental conditions, such as winter or drought. Hibernation is a form of dormancy used by animals during the winter months to conserve energy and survive until spring. Torpor is a short-term decrease in metabolic rate and body temperature used by some animals to conserve energy during periods of food scarcity or extreme temperatures.

Desert Tortoises Shut Down Metabolic Processes for Long Periods During