Mechanisms of freezing tolerance in an Antarctic midge, Belgica antarctica

Mechanisms of freezing tolerance in an Antarctic midge, Belgica antarctica ABSTRACT. The larvae and adults of Belgica antarctica were studied in an attempt to identify the mechanism of low temperature adaptation that enables this species to survive in the Antarctic. Larvae are freezing‐tolerant during the austral summer and elaborate a complex of cryoprotectants including erythritol, glucose, sucrose and trehalose. Adults are freezing‐susceptible and lack adequate quantities of cryoprotectants. Maintenance on artificial diets indicated that cryoprotectant profiles have food‐source and temperature‐dependent components. In addition, direct utilization of dietary cryoprotectants is suggested. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physiological Entomology Wiley

Mechanisms of freezing tolerance in an Antarctic midge, Belgica antarctica

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Publisher
Wiley
Copyright
Copyright © 1979 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0307-6962
eISSN
1365-3032
DOI
10.1111/j.1365-3032.1979.tb00171.x
Publisher site
See Article on Publisher Site

Abstract

ABSTRACT. The larvae and adults of Belgica antarctica were studied in an attempt to identify the mechanism of low temperature adaptation that enables this species to survive in the Antarctic. Larvae are freezing‐tolerant during the austral summer and elaborate a complex of cryoprotectants including erythritol, glucose, sucrose and trehalose. Adults are freezing‐susceptible and lack adequate quantities of cryoprotectants. Maintenance on artificial diets indicated that cryoprotectant profiles have food‐source and temperature‐dependent components. In addition, direct utilization of dietary cryoprotectants is suggested.

Journal

Physiological EntomologyWiley

Published: Mar 1, 1979

References

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