Assessment of indoor residual spraying and entomological collections of mosquitoes at the student village of Nasarawa State University Keffi, Nasarawa State, Nigeria

Abstract

Mosquitoes are found around our surroundings as they cause public disturbances whether harmful or beneficial. Mosquitoes are insect vectors which transmit many dreadful diseases causing serious health problems to human being. In this study, two sampling sites were selected, mud and concrete houses. Indoor mosquitoes were collected with the use of knock-down pyrethrum insecticide and morphological identification was done in the Insectary laboratory with the aid of a dissecting microscope, using standard procedures. A total of 748 adult mosquitoes were caught, out of which a higher  ravid with 33(9.48%) eache Abstract aboven be deduced from teh ely and carry our life acnumber of 400 (53.48%) mosquitoes were caught in mud houses while 348 (46.52%) were caught in concrete houses. Higher numbers of Culex sp were recorded in both mud houses and concrete houses. 345(51.96%) of the 400 mosquitoes from the mud houses were Culex sp while 55(65.48%) were Anopheles sp. Out of the 348 mosquitoes caught in the concrete houses, 319(48.04%) were Culex sp while 29(34.52%) were Anopheles. A highest number, 278(37.17%), of mosquitoes were caught in the month of July while the least number, 234(31.28%), was recorded in the month of June. Statistically, there was a significant difference between the relative abundance and distribution of mosquitoes based on months (P<0.05). The result of this study indicates the level of pollution in the area since Cullicines breed significantly in dirty stagnant water and due to the lack of proper drainage and sewage system in the study area. This can pose a serious health threat to the inhabitant. Health education will go a long way in sensitizing the inhabitants of the study area to avoid dumping of refuse indiscriminately.