Insects at low pressure: applications to artificial ecosystems and implications for global windborne distribution.
Insects have a number of potential roles in closed-loop life support systems. In this study we examined the tolerance of a range of insect orders and life stages to drops in atmospheric pressure using a terrestrial atmosphere. We found that all insects studied could tolerate pressures down to 100 mb. No effects on insect respiration were noted down to 500 mb. Pressure toleration was not dependent on body volume. Our studies demonstrate that insects are compatible with plants in low-pressure artificial and closed-loop ecosystems. The results also have implications for arthropod colonization and global distribution on Earth.
Cockell
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NASA Ames Research Center, Moffett Field, CA 94035-1000, USA. ccockell@mail.arc.nasa.gov
Catling
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Waites
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D000818:Animals; D001274:Atmospheric Pressure; D001522:Behavior, Animal; D002245:Carbon Dioxide; D003681:Dehydration; D018504:Ecological Systems, Closed; D007313:Insecta / Q000254:growth & development / Q000502:physiology*; D008021:Life Support Systems; D010100:Oxygen; D010313:Partial Pressure; D012143:Respiratory Physiological Phenomena
D002245:Carbon Dioxide; D010100:Oxygen