Larvicidal activity of bacillus thuringiensis serotype H-14 on certain Egyptian mosquito species

ABSTRACT

Laboratory experiments were carried out to screen the susceptibility of five Egyptian mosquito species to the toxic effect of a standard formulation of B. thuringiensis H-14 [IPS82 Lot 91509] prepared by Pasteur Institute. Tests were carried out under laboratory conditions using the method described by [De Barjac 1978]. The obtained results indicated that all tested mosquito species were susceptible to the toxic agents of this formulation. However, degree of susceptibility varied according to mosquito species. The highest rate of mortality was found among the larvae of Aedes capius PaIlas followed by Culex Pipiens, Culex antennatus, Anopheles multicolor and Anopheles phareonisis