Factors affecting the larval density index of Aedes albopictus in Guangzhou.

Objective To study the larval density and factors affecting the population of Aedes albopictus in Guangzhou. Methods Water containers and receptacles were used for the collection of larva. The larval density of Aedes albopictus and the environmental conditions were recorded and analyzed. Results The larva of Aedes albopictus were found throughout the year in Guangzhou. The larval density reached the highest level between May and August and the density was affected by temperature,rainfall and environment of the breeding sites. Temperature was the major factor affecting the larval density. The influence of rainfall depended upon the environment of breeding sites. Conclusion The larval density of Aedes albopitus was affected by both weather and environments of the breeding sites. Results obtained from this study can be used for setting up prediction models for the analysis of population density.