[Population structure and seasonal dynamics of mosquitoes in different types of residential areas].

Objective: To investigate the effect of the type of neighborhoods on the population structure and dynamics of mosquitoes.

Methods: The adult population dynamics and larvae breeding of mosquitoes in four different types of neighborhoods were investigated in Yangzhou City.

Results: The number of trapped mosquitoes was the largest in the urban villages, and more than 800 adult mosquitoes were trapped in each urban village, which was significantly higher than that of ordinary and high quality residences.

[Effect of Bacillus thuringiensis var. israelensis (Bti) on detoxification enzyme activity of larvae of Culex pipiens pallens and Aedes aegypti].

Objective: To investigate the effect of Bacillus thuringiensis var. israelensis (Bti) on the activities of three detoxification enzymes of Culex pipiens pallens and Aedes aegypti larvae.

Methods: The activities of glutathione transferase, acetyl cholinesterase and carboxyl esterase, were detected after two kinds of mosquito larvae were treated by Bti at different time and concentrations.

[Characterization of Bacillus thuringrensis var. israelesis larvicide granules to larvae of mosquitoes].

Objective: To develop a new formulation of Bacillus thuringrensis var. israelesis (Bti) granules and assess its effect on mosquito control.

Methods: The Bti granule formulation was produced by coating Bti liquid on the surface of the carrier.