Species Composition and Gonotrophic Stages of Indoor Resting Mosquitoes in Lecture Halls of University of Jos, Nigeria

Njila H. Livinus; Joan S. Tamai; Akwashiki Ombugadu; Mahanan J. Mafuyai.

Transactions on Science and Technology, 9(3), 159 - 170.

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ABSTRACT
Mosquitoes are important vector of several human diseases in tropical and sub-tropical Africa. Thus, this study was aimed to determine the species composition and gonotrophic stages of indoor resting mosquitoes in lecture halls of main campus, University of Jos. Collection of mosquito species was carried out between October and December 2016 from 6am-10am, using prokopack aspirator. An overall total of 8,139 indoor resting mosquitoes belonging to 1 family, 2 subfamily 3 genera and 3 species were collected and identified from 20 lecture halls. There was a significant difference (P < 0.05) in the mean abundance of mosquito species. Culex quinquefasciatus was the most abundant species of indoor resting mosquito collected. There was a significant difference in the mean number of male and female indoor resting mosquitoes.Whereas 6,283 representing 77.20% were males, 1,856 representing 22.80% were females. There was a significant difference in relation to blood digestion stages of indoor resting mosquitoes. 1,451 representing 78.18% of the total were unfed, 229 (12.34%) were gravid, 95 (5.12%) were fed and 81 (4.36%) were half gravid respectively. There was a significant difference in the abundance of indoor resting mosquitoes in relation to name of lecture halls. However, there was no significant difference in the abundance of indoor resting mosquitoes in relation to shape and type of walls respectively. The association of the overall abundance of indoor resting mosquito species with number of hall users correlated positively. Thus, periodic indoor residual spraying of lecture halls to reduce the vector density and thereby interrupting the transmission of mosquito borne diseases in the main campus of University of Jos should be carried out.

KEYWORDS: Species composition, mosquitoes, gonotrophic, shape and type of walls, University of Jos



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