Ecology of Aedes Mosquitoes in Kreang Sub-District, Cha-Uat District, Nakhon Si Thammarat
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Abstract
To study the Aedes mosquitoes’ ecology, identify the risk areas, study distribution model of Aedes mosquitoes and relationship between entomological indices and ecological factors. Samples were collected from 72 households using stratified sampling. All water containers were sampled for mosquito larvae; humidity, temperature and pH were measured. Scatter Plot were used to show the distribution of Aedes mosquitoes. Pearson correlation coefficients were used to explore the relationship. The t-Test and Kruskal Wallis Test were used to test the significant of the different of number of Aedes larvae in the different water containers. The results showed that Aedes mosquitoes were found in 15 types of water containers. All of 1,340 mosquito larvae, 659 were Aedes, 57 were Anopheles, 282 were Culex, and 342 were others. Plastic buckets were the most of breeding sites. Number of Aedes mosquito larvae were not different in different color, lid status and type of material used for the containers. Kreang Sub-District was indicated high risk of Dengue Haemorrhagic Fever transmission (BI > 50). Aedes mosquitoes were concentration distributed in the range of 50-70% humidity. Removal or avoidance of mosquito-bred breeding habitat behavior. It was a way to control the spread of mosquitoes. This will lead to a gradual decline in the spread of dengue haemorrhagic fever.
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