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Your search keyword '"Aïkpon, Rock"' showing total 13 results
Start Over Author "Aïkpon, Rock" Journal parasites & vectors
13 results on '"Aïkpon, Rock"'

1. The frequency of kdr and ace-1 alleles in Anopheles gambiae s.l. before and during indoor residual spraying (IRS) implementation and four years after IRS withdrawal in three districts in Atacora, Benin

Author

Odjo, Esdras Mahoutin, primary, Impoinvil, Daniel, additional, Fassinou, Arsène Jacques Y. H., additional, Padonou, Gil Germain, additional, Aïkpon, Rock, additional, Salako, Albert Sourou, additional, Sominahouin, André Aimé, additional, Adoha, Constantin, additional, Yovogan, Boulais, additional, Osse, Razaki, additional, Oussou, Olivier, additional, Tokponnon, Filémon, additional, Gnanguénon, Virgile, additional, Hassani, Ahmed Saadani, additional, and Akogbeto, Martin C., additional

Published
2024
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3. Cotton pest management practices and the selection of pyrethroid resistance in Anopheles gambiae population in Northern Benin

Author

Yadouleton Anges, Martin Thibaud, Padonou Gil, Chandre Fabrice, Asidi Alex, Djogbenou Luc, Dabiré Roch, Aïkpon Rock, Boko Michel, Glitho Isabelle, and Akogbeto Martin

Subjects
Infectious and parasitic diseases, RC109-216
Abstract

Abstract Background Pyrethroid insecticides, carbamate and organophosphate are the classes of insecticides commonly used in agriculture for crop protection in Benin. Pyrethroids remain the only class of insecticides recommended by the WHO for impregnation of bed nets. Unfortunately, the high level of pyrethroid resistance in Anopheles gambiae s.l., threatens to undermine the success of pyrethroid treated nets. This study focuses on the investigation of agricultural practices in cotton growing areas, and their direct impact on larval populations of An. gambiae in surrounding breeding sites. Methods The protocol was based on the collection of agro-sociological data where farmers were subjected to semi-structured questionnaires based on the strategies used for crop protection. This was complemented by bioassay tests to assess the susceptibility of malaria vectors to various insecticides. Molecular analysis was performed to characterize the resistance genes and the molecular forms of An. gambiae. Insecticide residues in soil samples from breeding sites were investigated to determine major factors that can inhibit the normal growth of mosquito larvae by exposing susceptible and resistant laboratory strains. Results There is a common use by local farmers of mineral fertilizer NPK at 200 kg/ha and urea at 50 kg/hectare following insecticide treatments in both the Calendar Control Program (CCP) and the Targeted Intermittent Control Program (TICP). By contrast, no chemicals are involved in Biological Program (BP) where farmers use organic and natural fertilizers which include animal excreta. Susceptibility test results confirmed a high resistance to DDT. Mean mortality of An. gambiae collected from the farms practicing CCP, TICP and BP methods were 33%, 42% and 65% respectively. An. gambiae populations from areas using the CCP and TICP programs showed resistance to permethrin with mortality of 50% and 58% respectively. By contrast, bioassay test results of An. gambiae from BP areas gave a high level of susceptibility to permethrin with an average mortality of 94%. Molecular analysis identified An. gambiae s.s, and An. arabiensis with a high predominance of An. gambiae s.s (90%). The two molecular forms, M and S, were also determined with a high frequency of the S form (96%). The Kdr gene seemed the main target- site resistance mechanism detected in CCP, TICP, and BP areas at the rates ranging from 32 to 78%. The frequency of ace-1R gene was very low (< 0.1). The presence of inhibiting factors in soil samples under insecticide treatments were found and affected negatively in delaying the development of An. gambiae larval populations. Conclusions This research shows that Kdr has spread widely in An. gambiae, mainly in CCP and TICP areas where pyrethroids are extensively used. To reduce the negative impact of pesticides use in cotton crop protection, the application of BP-like programs, which do not appear to select for vector resistance would be useful. These results could serve as scientific evidence of the spread of resistance due to a massive agricultural use of insecticides and contribute to the management of pesticides usage on cotton crops hence reducing the selection pressure of insecticides on An. gambiae populations.

Published
2011
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4. Insecticide resistance status, frequency of L1014F Kdr and G119S Ace-1 mutations, and expression of detoxification enzymes in Anopheles gambiae (s.l.) in two regions of northern Benin in preparation for indoor residual spraying

Author

Salako, Albert Sourou, primary, Ahogni, Idelphonse, additional, Aïkpon, Rock, additional, Sidick, Aboubakar, additional, Dagnon, Fortune, additional, Sovi, Arthur, additional, Sominahouin, André Aimé, additional, Agossa, Fiacre, additional, Iyikirenga, Laurent, additional, and Akogbeto, Martin C., additional

Published
2018
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5. Malaria vectors resistance to insecticides in Benin: current trends and mechanisms involved

Author

Gnanguenon, Virgile, primary, Agossa, Fiacre R, additional, Badirou, Kefilath, additional, Govoetchan, Renaud, additional, Anagonou, Rodrigue, additional, Oke-Agbo, Fredéric, additional, Azondekon, Roseric, additional, AgbanrinYoussouf, Ramziath, additional, Attolou, Roseline, additional, Tokponnon, Filemon T, additional, Aïkpon, Rock, additional, Ossè, Razaki, additional, and Akogbeto, Martin C, additional

Published
2015
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8. Impact of land-use on malaria transmission in the Plateau region, southeastern Benin

Author

Sovi, Arthur, primary, Govoétchan, Renaud, additional, Tokponnon, Filémon, additional, Hounkonnou, Hermine, additional, Aïkpon, Rock, additional, Agossa, Fiacre, additional, Gnanguenon, Virgile, additional, Salako, Albert S, additional, Agossou, Christian, additional, Ossè, Razaki, additional, Okè, Mariam, additional, Gbénou, Dina, additional, Massougbodji, Achille, additional, and Akogbéto, Martin, additional

Published
2013
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9. Impact of operational effectiveness of long-lasting insecticidal nets (LLINs) on malaria transmission in pyrethroid-resistant areas

Author

Sovi, Arthur, primary, Azondékon, Roseric, additional, Aïkpon, Rock Y, additional, Govoétchan, Renaud, additional, Tokponnon, Filémon, additional, Agossa, Fiacre, additional, Salako, Albert S, additional, Oké-Agbo, Frédéric, additional, Aholoukpè, Bruno, additional, Okè, Mariam, additional, Gbénou, Dina, additional, Massougbodji, Achille, additional, and Akogbéto, Martin, additional

Published
2013
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13. A shift from Indoor Residual Spraying (IRS) with bendiocarb to Long-Lasting Insecticidal (mosquito) Nets (LLINs) associated with changes in malaria transmission indicators in pyrethroid resistance areas in Benin

Author

Ossè, Razaki A, primary, Aïkpon, Rock, additional, Gbédjissi, Ghélus Louis, additional, Gnanguenon, Virgile, additional, Sèzonlin, Michel, additional, Govoétchan, Renaud, additional, Sovi, Arthur, additional, Oussou, Olivier, additional, Oké-Agbo, Frédéric, additional, and Akogbéto, Martin, additional

Published
2013
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