Susceptibility of laboratory and field-collected Aedes aegypti and Aedes albopictus to Bacillus thuringiensis israelensis H-14

Journal of the American Mosquito Control Association
Y W Lee, J Zairi

Abstract

Susceptibility levels of a few laboratory-cultured and dengue-endemic area field-collected strains of Aedes aegypti and Aedes albopictus to Bacillus thuringiensis israelensis (Bti) at different storage ages were studied. The susceptibility of laboratory-cultured World Health Organization (WHO) Bora Bora reference, Vector Control Research Unit (VCRU), and Fumakilla Malaysia Berhad (FMB) strains of Ae. aegypti to Bti was examined. The sensitivity to Bti decreased with storage age. The median lethal concentration (LC50) for Bti increased by 2-3 times after 2 years compared to a fresh sample (3-6 months of storage). However, after the 2-year storage period, Bti still provided very good efficacy against all laboratory-cultured susceptible strains of Ae. aegypti and Ae. albopictus. The observed 95% lethal concentration values were about 20 times lower than the recommended concentration (6,000 international toxic units (ITU)/liter). Results obtained from the study against the dengue-endemic area field-collected strains of Ae. aegypti and Ae. albopictus confirmed the effectiveness of the Bti after storage for 2 years (18-24 months). For Ae. aegypti, the Ujung Batu strain was the most susceptible to Bti, whereas the Sungai Nibong strain...Continue Reading

References

Jan 1, 1987·AIDS Research and Human Retroviruses·L RatnerF Wong-Staal
Jun 1, 1965·Journal of Medical Entomology·A Rudnick
Sep 1, 1984·Applied and Environmental Microbiology·M J Klowden, L A Bulla
Sep 1, 2000·The European Respiratory Journal·D LoppowR A Jörres
May 15, 1965·British Medical Journal·A RUDNICKM B OMAR

❮ Previous
Next ❯

Citations

Jun 2, 2007·Environmental Entomology·Nuananong JirakanjanakitSutee Yoksan
Jun 4, 2010·PLoS Neglected Tropical Diseases·Louis LambrechtsDuane J Gubler
Aug 6, 2010·Insect Biochemistry and Molecular Biology·Lígia Maria FerreiraMaria Helena Neves Lobo Silva-Filha
Aug 27, 2021·Toxins·Maria Helena Neves Lobo Silva-FilhaAlejandra Bravo

❮ Previous
Next ❯