Knowra Torpor Torpor Torpor is a temporary physiological state in which an animal reduces its metabolic rate and body temperature, conserving energy when conditions or resources are unfavorable.
Metabolic rate : The rate at which an organism uses energy and carries out metabolism. Torpor conserves energy by lowering the rate of ongoing metabolic processes.
Hibernation : A prolonged seasonal state of reduced metabolism and body temperature in some animals. Torpor is often brief, while hibernation consists of extended bouts interrupted by arousals.
Energetics : The study of energy flow, use, and transformation in organisms and ecosystems. Torpor is an energy-saving strategy whose costs and benefits can be measured.
Hummingbird torpor : A nightly torpor state used by some hummingbirds to reduce energy expenditure. Small hummingbirds can sharply lower metabolism overnight when feeding cannot replenish energy.
Thermoregulation : The control of body temperature through physiological and behavioral processes. Torpor often involves reducing the body's regulated temperature, not merely reducing activity.
Daily torpor : A short torpor bout, usually lasting less than a day, that recurs in some animals. It is the brief, regularly recurring form often contrasted with seasonal hibernation.
Food scarcity : A condition in which food availability is insufficient to meet an organism's needs. Limited food can trigger torpor by making ordinary energy expenditure unsustainable.
Hibernating ground squirrel : A ground squirrel that undergoes prolonged seasonal bouts of metabolic suppression and cooling. Ground squirrels illustrate deep torpor punctuated by periodic rewarming.
Hypothalamus : A brain region that regulates functions including body temperature, hunger, and hormone release. Neural control of temperature and metabolism helps coordinate entry into and recovery from torpor.
Estivation : A dormant state that helps animals survive hot or dry conditions. It conserves resources during heat or drought, whereas torpor is defined by lowered metabolism and temperature.
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