Autor(es): Patil, NS; Lole, KS; Deobagkar, DN

Resumo: Fourth-instar larvae of mosquitoes Anopheles stephensi and Aedes aegypti normally died within 90 min at 43 degrees C. 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.

Palavras-Chave: Aedes aegypti, Anopheles stephensi, Mosquito larvae, Heat shock proteins, Mosquito physiology, Thermotolerance, Cross - Thermotolerance, Insecticide tolerance, Larvicide, Propoxur, Environmental interactions

Imprenta: Medical and Veterinary Entomology, v. 10, n. 3, p. 277-282, 1996

Identificador do objeto digital: 10.1111/j.1365-2915.1996.tb00743.x

Descritores: Aedes aegypti - Larvicide

Data de publicação: 1996