A rapid cold-hardening process in insects

Traditionally studies of cold tolerance in insects have focused on seasonal adaptations related to overwintering that are observed after weeks or months of exposure to low temperature. In contrast, an extremely rapid cold-hardening response was observed in nonoverwintering stages that confers protec...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1987-12, Vol.238 (4832), p.1415-1417
Main Authors: Lee, R.E. Jr, Chen, C.P, Denlinger, D.L
Format: Article
Language:English
Subjects:
ADAPTACION FISIOLOGICA
ADAPTATION
Adult insects
Beetles
Biochemistry
Biochemistry. Physiology. Immunology
Biological and medical sciences
Chrysomelidae
COLD
Cold adaptation
Cooling
Diapause
DURCISSEMENT
ENDURECIMIENTO
FRIO
FROID
Fundamental and applied biological sciences. Psychology
Glycerin
Glycerol
HARDENING
HEMIPTERA
HIVERNAGE
Insect development
Insect larvae
Insecta
Insects
INVERNACION
Invertebrates
Low temperature
Lygaeidae
ONCOPELTUS FASCIATUS
OVERWINTERING
Physiological aspects
Physiology. Development
Pupae
SARCOPHAGA CRASSIPALPIS
Sarcophagi
SARCOPHAGIDAE
SARCOPHAGIDE
Supercooling
Temperature
xanthogaleruca luteola
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Summary:Traditionally studies of cold tolerance in insects have focused on seasonal adaptations related to overwintering that are observed after weeks or months of exposure to low temperature. In contrast, an extremely rapid cold-hardening response was observed in nonoverwintering stages that confers protection against injury due to cold shock at temperatures above the supercooling point. This response was observed in nondiapausing larvae and pharate adults of the flesh fly, Sarcophaga crassipalpis, nondiapausing adults of the elm leaf beetle, Xanthogaleruca luteola, and the milkweed bug, Oncopeltus fasciatus. The rapid hardening response is correlated with the accumulation of glycerol.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.238.4832.1415