Pyrethroid Susceptibility in Culex quinquefasciatus Say. (Diptera: Culicidae) Populations from Delta State, Niger-Delta Region, Nigeria

Pyrethroid Susceptibility in Culex quinquefasciatus Say. (Diptera: Culicidae) Populations from Delta State, Niger-Delta Region, Nigeria

The development of insecticide resistance in different species of mosquitoes to Pyrethroids is a major challenge for vector-borne diseases transmitted by mosquitoes. Failure of Pyrethroids in control of mosquitoes would impact negatively on the gains recorded in control of mosquito-borne diseases in...

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Bibliographic Details
Published in:Journal of medical entomology Vol. 59; no. 2; pp. 758 - 763
Main Authors: Ojianwuna, Chioma C., Omotayo, Ahmed I., Enwemiwe, Victor N., Adetoro, Fouad A., Eyeboka, Destiny N., Adesalu, Kemi, Egedegbe, Allan, Esiwo, Eric, Oyeniyi, Tolulope A.
Format: Journal Article
Language:English
Published: US Entomological Society of America 16-03-2022
Oxford University Press
Subjects:
Animals
Anopheles
Aquatic insects
Bioassays
Culex - genetics
Culex quinquefasciatus
Culex quinquefasciatuss
Culicidae
Delta
Deltamethrin
Diptera
Disease transmission
Infectious diseases
Insecticide resistance
Insecticide Resistance - genetics
Insecticides
Insecticides - pharmacology
knockdown mutation
Medical research
Medicine, Experimental
Mosquito Control - methods
Mosquito Vectors - genetics
Mosquitoes
Mutation
Nets
Niger
Nigeria
Permethrin
Permethrin - pharmacology
Pesticide resistance
Polymerase chain reaction
Population genetics
Populations
Pyrethrins - pharmacology
Pyrethroid resistance
Pyrethroids
Species
Vector-borne diseases
VECTOR-BORNE DISEASES, SURVEILLANCE, PREVENTION
Nigeria
Niger
Sub-Saharan Africa
Niger Delta
Pyrethroid resistance
Nigeria
Delta
knockdown mutation
Culex quinquefasciatuss
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Summary:The development of insecticide resistance in different species of mosquitoes to Pyrethroids is a major challenge for vector-borne diseases transmitted by mosquitoes. Failure of Pyrethroids in control of mosquitoes would impact negatively on the gains recorded in control of mosquito-borne diseases in previous years. In anticipation of a country-wide deployment of Pyrethroid-treated nets for control of mosquito-borne diseases in Nigeria, this study assessed susceptibility of Culex quinquefasciatus Say. (Diptera: Culicidae) to Pyrethroids in Owhelogbo, Ejeme and Oria-Abraka communities in Delta State, Niger-Delta, Nigeria. Three to five day old Cx. quinquefasciatus were exposed to Deltamethrin (0.05%), Permethrin (0.75%), and Alphacypermethrin (0.05%) using World Health Organization bioassay method. Polymerase chain reaction (PCR) was employed in characterization of species and knockdown mutation. Results revealed that Cx. quinquefasciatus were generally susceptible (98-100%) to Deltamethrin, Permethrin, and Alphacypermethrin in the three communities with the exception of Owhelogbo where resistance to Deltamethrin (97%) was suspected. Knockdown time to Deltamethrin (11.51, 11.23, and 12.68 min), Permethrin (28.75, 13.26, and 14.49 min), and Alphacypermethrin (15.07, 12.50, and 13.03 min) were considerably low for Owhelogbo, Ejeme, and Oria-Abraka Cx. quinquefasciatus populations, respectively. Species identification result showed that all amplified samples were Cx. quinquefasciatus; however, no kdr allele was found in the three populations. Deployment of pyrethroid-treated nets for control of mosquito-borne diseases in Niger-Delta region of Nigeria is capable of reducing burden of diseases transmitted by Cx. quinquefasciatus as well as addressing nuisance value of the vector; however, caution must be entertained so as not to increase selection pressure thereby aiding resistance development.
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ISSN:0022-2585
1938-2928
DOI:10.1093/jme/tjab217