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Adaptive larval thermotolerance and induced cross‐tolerance to propoxur insecticide in mosquitoes Anopheles stephensi and Aedes aegypti
Author(s) -
PATIL NALINI S.,
LOLE KAVITA S.,
DEOBAGKAR DILEEP N.
Publication year - 1996
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.1996.tb00743.x
Subject(s) - anopheles stephensi , biology , aedes aegypti , propoxur , larva , aedes , anopheles , insecticide resistance , mosquito control , zoology , toxicology , pesticide , malaria , ecology , immunology
. Fourth‐instar larvae of mosquitoes Anopheles stephensi and Aedes aegypti normally died within 90 min at 43d̀C. Pre‐exposure to high but sublethal temperatures conferred adaptive thermotolerance, dependent on the temperature and the duration of pre‐exposure. Adaptive cross‐tolerance to propoxur (a carbamate insecticide) was also induced in larvae by pre‐exposing them to sublethal temperatures. Pre‐exposure to sublethal concentrations of propoxur was found to confer cross‐thermotolerance to a lower extent. These results suggest that the shock proteins (e.g. heat shock proteins) induced by unrelated stress factors play an important role in the development of adaptive cross‐protection (stress response) to other stress conditions.