Effect of ecological factors and breeding habitat types on Culicine larvae occurrence and abundance in residential areas Southern Thailand.

Mosquitoes are a vector of human disease transmitting malaria, and many arboviruses such as dengue virus and Zika virus. This study determined mosquito larval occurrence and abundance in residential areas around Suratthani Rajabhat University as influenced by ecological factors and breeding container diversity. Mosquito larvae were collected using a standard dipping method from 95 locations during April through September 2019 and environmental factors such as physicochemical parameters of water in the breeding containers were measured. During the survey, a total of 194 houses were inspected, of which 58 were found to be infested with mosquito larvae, with a house index of 29.90, a container index of 25.55, and a Breteau index of 48.99. A total of 5,123 mosquito larvae were reported from seven breeding habitat types namely, plastics, cement, mud pots, glass, foam, discarded tires and natural materials. Among the collected larvae, Aedes albopictus (56.45%) was most prevalent, while Culex sp. (22.33%) and Aedes aegypti were less prevalent (21.21%). The most common mosquito larvae breeding habitats were plastics (44.22%) followed by discarded tires (18.14%). The spearman correlation analysis showed that the number of mosquito larvae were significantly positively correlated with the depths and width of containers (p<0.05). These findings are helpful in understanding the ecological factors and breeding habitat types that influence mosquito species and their abundance, and also in determining ways to control mosquito borne diseases.