A Survey of Mosquito-borne Endoparasites in Kuching Division, Sarawak

Huang, Jia Huei (2014) A Survey of Mosquito-borne Endoparasites in Kuching Division, Sarawak. [Final Year Project Report] (Unpublished)

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Abstract

Mosquitoes are important vectors in the transmission of zoonotic diseases including malaria, lymphatic filariasis, dengue and yellow fever from host to host. This present study determined the occurrence of bloodfed female mosquitoes as well as mosquito-borne endoparasites in residential areas of Serian and Bau districts, and a forested area at Kubah National Park in Kuching Division of Sarawak. Mosquitoes were collected by mosquito net and thin blood smears were stained with Giemsa to examine for the presence of mosquito-borne endoparasites. The correlation between the blood-fed mosquitoes and the female mosquitoes collected was identified based on Pearson correlation analysis. There was a total of 132 (20.82%) and 24 (5.84%) blood-fed mosquitoes sampled in Serian and Bau and no blood-fed individual being collected at the forested area. There was high correlation between the total number of blood-fed mosquitoes and the total number of female mosquitoes at both residential sites in Serian (r=0.671; p<0.05) and Bau (r=0.337; p<0.007). Three or 2.80% (3/107) female Culex mosquitoes were detected positively for microfilarial nematode from the stained blood smear specimens collected in Serian. The occurrence of female and bloodfed mosquitoes is highly dependent on the density of human and backyard farming at the study sites. There was low occurrence of the main vectors for filariasis (Mansonia sp.) and malaria (Anopheles sp.) in all study sites.

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