Evaluation du comportement trophique de Aedes aegypti dans la ville de cotonou au sud du Bénin

Anges, Yadouleton; Dramane, Gado; Ahadji-Dabla, Koffi Mensah; Agbanrin, Ramziyath; Tchibozo, Carine; Agolinou, Achaz; Roland, Tossou; Baba-Moussa, Lamine

doi:10.19044/esj.2018.v14n33p70

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…The enormous quantities of insecticides of the same class used in agriculture could be at the origin of this overproduction of oxidases. The glutathione-S-transferase activity observed in our vector populations confirms the strong resistance to DDT observed by Yadouleton et al [ 2 ] in Ae. aegypti in Benin.…”

Section: Discussionsupporting

confidence: 91%

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Insecticide resistance status of Aedes aegypti and Aedes albopictus mosquitoes in southern Benin, West Africa

et al. 2023

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Background The emergence of insecticide resistance in Aedes mosquitoes could undermine efforts to control arboviruses. The present study aims to assess in some communes of Southern Benin, the susceptibility level of Aedes aegypti (Linnaeus, 1762) and Aedes albopictus (Skuse, 1894) to insecticides commonly used in public health, as well as mechanisms involved. Methods Females Ae. albopictus and Ae. aegypti collected in Ifangni, Porto-Novo, Avrankou, Adjarra and Kétou from June 2021 to October 2022, were exposed to: deltamethrin 0.05%, permethrin 0.75%, alpha-cypermethrin 0.05%, pirimiphos methyl 0.25% and bendiocarb 0.1%, following the standard WHO susceptibility tube test protocol. In some sites, pre-exposure to the synergist PBO was used to verify if pyrethroid resistance of populations of Aedes was mediated by oxidases. Results Full susceptibility to deltamethrin and permethrin was observed in all tested populations of Ae. albopictus. However, with alphacypermethrin, a suspected resistance was observed in Adjarra (94.67%), Ifangni (93%) and Porto-Novo (94%), and a resistance in Avrankou (83%). The PBO-alphacypermethrin tests performed, led to a full susceptibility (100%) in all four sites, which confirms the full involvement of oxidases in resistance of all tested populations of Ae. albopictus to alphacypermethrin. At the opposite, Aedes aegypti was either resistant or suspected of being resistant to all tested pyrethroids in all four sites, except in Ifangni where a full susceptibility to alphacypermethrin was observed. The full susceptibility of Ae. aegypti to bendiocarb and pirimiphos-methyl in all communes suggests that these two insecticides can be good candidates for an effective control of pyrethroid-resistant Aedes vector populations. Use of permethrin and deltamethrin could also be considered for controlling populations of Ae. albopictus. Conclusion Results of the present study will help guide strategy to implement for an effective control of Aedes vector populations in Benin.

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Section: Discussionsupporting

confidence: 91%

“…Aedes aegypti is the main indigenous vector of arboviruses in Africa [ 1 ]. In Benin, it remains abundant in both the south and the north parts of the country [ 2 , 3 ]. Recent studies have reported the presence of Aedes albopictus , a vector native to Asia, in Southern Benin [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Insecticide resistance status of Aedes aegypti and Aedes albopictus mosquitoes in southern Benin, West Africa

et al. 2023

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“…Thus far, there are no reports on current outbreaks of arboviruses although the DENV seems to be endemic with two reported human cases (56,57) and CHIKV seem to circulate as suggested by a couple of studies (54,55). The low numbers of arbovirus cases in Benin might be due to under-diagnosed or under-reported cases, as DENV for example has similar symptoms to malaria (27). In contrast to Gabon, mosquito surveillance studies revealed the dominance of Ae.…”

Section: Discussionmentioning

confidence: 99%

“…vitattus and Ae. luteocephalus was observed in Gabon, even though these species of mosquito are present in West Africa (26)(27)(28)(34)(35)(36)(37). This absence might be attributed to the extensive forested areas in Gabon, where over 88% of its total surface is covered by rainforests, making it one of the most forested countries globally.…”

Section: Mosquito Vectors Of Arbovirusesmentioning

confidence: 99%

Ecology of arboviruses and their potential mosquito vectors in Benin, Côte d’Ivoire and Gabon: a mini review

Manouana,

Sarah-Matio,

Hellhammer

et al. 2024

Front. Trop. Dis

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Mosquito-borne arboviral zoonoses are an increasingly (re-)emerging threat for millions of people in endemic countries of Africa. Aedes-transmitted yellow fever (YF), dengue (DEN), chikungunya (CHIK), and Zika (ZIK) viruses, as well as Aedes- and Culex transmitted Rift Valley fever virus (RVFV) infections often go undiagnosed and as a result, accurate clinical reports for these viral diseases are lacking. The absence of evidence-based risk maps for arbovirus infections hinders the implementation of more suitable prevention/surveillance and control strategies in both non-endemic and endemic African countries. The vectorial capacity of arbovirus-transmitting vectors is highly complex mainly due to the interplay between biotic and abiotic factors that vary in time and space, explaining the differential patterns of arbovirus diseases between countries. Mapping the influential factors of arbovirus transmission, such as vector ecology, behavior, and biology in countries with different outcomes of arboviral diseases, will strongly help improve our understanding of local epidemiology and circulation of these diseases. Herein, we review up-to-date data on the distribution of arboviruses and their respective vectors from three sub-Saharan African countries (Benin, Côte d’Ivoire, and Gabon) presenting different patterns of arbovirus diseases. We pinpointed major knowledge gaps and potential research interests to increase knowledge of the distribution of arboviral diseases and their vectors through African countries to improve the strategies to successfully prevent, monitor, and control the disease outbreak.

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“…The previous studies conducted in much smaller areas revealed the presence of four Aedes species in Cotonou [ 47 ] and three in Abomey-Calavi [ 21 ]. In the present study, Ae.…”

Section: Discussionmentioning

confidence: 99%

Distribution and Abundance of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in Benin, West Africa

Padonou,

Konkon,

Salako

et al. 2023

TropicalMed

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Updated information on the distribution and abundance of Aedes aegypti and Aedes albopictus is crucial to prepare African countries, such as Benin, for possible arboviral disease outbreaks. This study aims to evaluate the geographical distribution, abundance and biting behaviour of these two vectors in Benin. Three sampling techniques were used in thus study. The collection of Aedes spp. adults were made through human landing catch (HLC), immatures were captured with the use of ovitraps, and a dipping technique was used for the collection of Aedes spp. In 23 communes located along the North–South and East–West transect of Benin. Adult Aedes mosquitoes were collected indoors and outdoors using HLC. Mosquito eggs, larvae and pupae were collected from containers and ovitraps. The adult mosquitoes were morphologically identified, then confirmed using a polymerase chain reaction (PCR). Overall, 12,424 adult specimens of Aedes spp. were collected, out of which 76.53% (n = 9508) and 19.32% (n = 2400) were morphologically identified as Ae. aegypti and Ae. Albopictus, respectively. Geographically, Ae. aegypti was found across the North–South transect unlike Ae. albopictus, which was only encountered in the southern part of the country, with a great preponderance in Avrankou. Furthermore, an exophagic behaviour was observed in both vectors. This updated distribution of Aedes mosquito species in Benin will help to accurately identify areas that are at risk of arboviral diseases and better plan for future vector control interventions.

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Evaluation du comportement trophique de Aedes aegypti dans la ville de cotonou au sud du Bénin

Cited by 4 publications

References 6 publications

Insecticide resistance status of Aedes aegypti and Aedes albopictus mosquitoes in southern Benin, West Africa

Insecticide resistance status of Aedes aegypti and Aedes albopictus mosquitoes in southern Benin, West Africa

Ecology of arboviruses and their potential mosquito vectors in Benin, Côte d’Ivoire and Gabon: a mini review

Distribution and Abundance of Aedes aegypti and Aedes albopictus (Diptera: Culicidae) in Benin, West Africa

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