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Biological fitness costs associated with the various permethrin resistance development statuses in Anopheles gambiae in Nigeria

Authors:

A. T. Ande,

University of Ilorin, Ilorin, NG
About A. T.
Entomological Unit, Department of Zoology
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O. J. Adelaja ,

University of Ilorin, Ilorin, NG
About O. J.
Entomological Unit, Department of Zoology
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A. V. Agada,

University of Ilorin, Ilorin, NG
About A. V.
Entomological Unit, Department of Zoology
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O. I. Akanni,

University of Ilorin, Ilorin, NG
About O. I.
Entomological Unit, Department of Zoology
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A. I. Omotayo

University of Ilorin, Ilorin, NG
About A. I.

Entomological Unit, Department of Zoology

 

Public Health and Epidemiology Department, Nigeria Institute of Medical Research, Yaba, Lagos

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Abstract

Man, in a desperate bid to manage malaria-vectors, i.e., Anopheles gambiae s.l. (Diptera: Culicidae) has relentlessly relied on pyrethroid insecticides especially permethrin. Unfortunately, these mosquitoes have improved their survival with respect to this tactic which must have been associated with some fitness-costs. This study, therefore, evaluates the biological fitness-costs associated with permethrin-resistance development in An. gambiae s.l. in Kwara State, Nigeria. Susceptibility statuses of adult female An. gambiae s.l. populations collected from Oke-odo, Pipeline and Airport were established using World Health Organization Protocol. They were subsequently raised over three-generations and the fecundity, hatchability, development time for larvae, pupae and adult, adult emergence, the adult sex ratio was observed, noted, monitored and analysed using ANOVA (P<0.05). Permethrin-resistant, moderately-resistant and susceptible status were each observed in the An. gambiae s.l. populations of Oke-odo, pipeline and Airport, respectively. The biological fitness-costs showed that permethrin-resistant An. gambiae s.l. had reduced fecundity (F1=86.07%, F2=84.55% and F3=100%) and hatchability (F1=96.58%, F2=92.02% and F3=100%). Also, there were reduced larvae developmental-time (F1=35.71% and F2=42.86%), adult-emergence (F1=97.69%) and longevity (F1=46.39%) when compared with the susceptible population. Permethrin-resistance development in An. gambiae s.l. definitely comes with some biological fitness-costs that disadvantage its transmission potential and can be leveraged upon in vector-management.
How to Cite: Ande, A.T., Adelaja, O.J., Agada, A.V., Akanni, O.I. and Omotayo, A.I., 2022. Biological fitness costs associated with the various permethrin resistance development statuses in Anopheles gambiae in Nigeria. Sri Lankan Journal of Biology, 7(1), pp.1–11. DOI: http://doi.org/10.4038/sljb.v7i1.73
Published on 25 Jan 2022.
Peer Reviewed

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