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Decrease of body temperature in armadillos experimentally covered by soil
1Departamento de Biología, Universidad Nacional del Sur, San Juan, Bahía Blanca, Argentina.
Archives of Physiology and Biochemistry
|April 1, 1995
Summary
The armadillo Chaetophractus villosus can breathe when buried in soil. Experimentally, its deep body temperature (TB) dropped significantly after 90 minutes but recovered upon re-exposure to air.
Area of Science:
- Zoology
- Animal Physiology
- Thermoregulation
Background:
- Armadillos are known for their burrowing behaviors.
- Understanding their physiological responses to environmental challenges is crucial.
Purpose of the Study:
- To investigate the respiratory and thermoregulatory responses of the armadillo Chaetophractus villosus when subjected to soil burial.
- To determine if the animal can maintain respiration and how its body temperature is affected.
Main Methods:
- Experimental soil burial of the armadillo Chaetophractus villosus.
- Monitoring of respiration.
- Measurement of deep rectal temperature (TB) over a 90-minute period.
Main Results:
- The armadillo Chaetophractus villosus maintained respiration throughout the soil burial experiment.
- A significant decrease in deep rectal temperature (TB) was observed, averaging a drop of 1.7 +/- 0.4 degrees C after 90 minutes.
- Upon removal from soil and re-exposure to open air, TB gradually increased, indicating recovery.
Conclusions:
- Chaetophractus villosus exhibits tolerance to short-term soil burial, maintaining respiration.
- The species demonstrates a capacity for hypothermia as a physiological response to an anoxic and potentially stressful environment.
- This study highlights the adaptive physiological mechanisms of armadillos to subterranean conditions.