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Effects of Environmental Manipulation on the Control of Mosquito Vectors in Makurdi Benue State, Nigeria

Orpin E. A., Manyi M. M., Azua E. T.

Abstract

Mosquitoes are charge for numerous diseases in the environment. Many tools exist for their control but with negative consequences in the environment, which call for safe, efficient and eco- friendly measures. In respect of the above, this study determines the effects of environmental manipulation on spread and richness of immature stages of mosquitoes in different habitats within Makurdi metropolis. During the study, water samples were identified and taken in selected sites during morning and evening times using standard techniques. Six locations (Gboko Road, Wurukum, High Level, Kanshio, Wadata and North bank) were randomly selected and sampled fortnightly from January to December, 2024. Before interventions, 7,621 larvae and 4,726 pupae mosquitoes belonging to 4 genera: Culex (63.18%) Anopheles (27.08%) Aedes (5.02%) with 3 species each and Mansonia (4.73%) with 2 species making 11 were collected. After interventions, mosquito population declined to 3,015 larvae and 1,754 pupae. Species diversity and richness remained unchanged (11) across the locations. The results showed a significant difference (P < 0.05) in the distribution of immature mosquitoes collected after intervention. Consequently, the Wilcoxon signed-rank test was adopted to compare between “Before” and “After” the interventions showing a significant reduction in larvae abundance and pupae count after the intervention (P < 0.001) indicating a post-intervention decline in the number of mosquito developmental stages. The outcome of this study unfolds prospects for design and application of mosquito control measures that would replace or be integrated to existing methods, which are hazardous to both man and other beneficial organisms in the environment.

Keywords

EnvironmentalManipulationControlMosquitoVector

References

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