Insecticide resistance status in Culex quinquefasciatus in Benin

Yadouleton, A.; Badirou, Kefilath; Agbanrin, Ramziath; Jöst, Hanna; Attolou, Roseline; Srinivasan, R.; Padonou, Germain Gil; Akogbéto, Martin

doi:10.1186/s13071-015-0638-3

Cited by 53 publications

(39 citation statements)

References 22 publications

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“…The high resistance among Aedes mosquito populations can be attributed to the prolonged use of these insecticides in controlling mosquitoes domestically, such as with sprays, coils and long-lasting insecticidal nets (LLINs). Pyrethroids have also been widely used in agriculture [35–38]. The frequent use of insecticides for vector control has led to increasing concerns over the development of insecticide resistance of these vectors on the environment and human health, which can compromise vector control strategies.…”

Section: Discussionmentioning

confidence: 99%

Habitat productivity and pyrethroid susceptibility status of Aedes aegypti mosquitoes in Dar es Salaam, Tanzania

et al. 2017

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Background: Aedes aegypti (Diptera: Culicidae) is the main vector of the dengue virus globally. Dengue vector control is mainly based on reducing the vector population through interventions, which target potential breeding sites. However, in Tanzania, little is known about this vector's habitat productivity and insecticide susceptibility status to support evidence-based implementation of control measures. The present study aimed at assessing the productivity and susceptibility status of A. aegypti mosquitoes to pyrethroid-based insecticides in Dar es Salaam, Tanzania. Methods: An entomological assessment was conducted between January and July 2015 in six randomly selected wards in Dar es Salaam, Tanzania. Habitat productivity was determined by the number of female adult A. aegypti mosquitoes emerged per square metre. The susceptibility status of adult A. aegypti females after exposure to 0.05% deltamethrin, 0.75% permethrin and 0.05% lambda-cyhalothrin was evaluated using the standard WHO protocols. Mortality rates were recorded after 24 h exposure and the knockdown effect was recorded at the time points of 10, 15, 20, 30, 40, 50 and 60 min to calculate the median knockdown times (KDT 50 and KDT 95 ). Results:The results suggest that disposed tyres had the highest productivity, while water storage tanks had the lowest productivity among the breeding habitats Of A. aegypti mosquitoes. All sites demonstrated reduced susceptibility to deltamethrin (0.05%) within 24 h post exposure, with mortalities ranging from 86.3 ± 1.9 (mean ± SD) to 96.8 ± 0.9 (mean ± SD). The lowest and highest susceptibilities were recorded in Mikocheni and Sinza wards, respectively. Similarly, all sites demonstrated reduced susceptibility permethrin (0.75%) ranging from 83.1 ± 2.1% (mean ± SD) to 96.2 ± 0.9% (mean ± SD), in Kipawa and Sinza, respectively. Relatively low mortality rates were observed in relation to lambda-cyhalothrin (0.05%) at all sites, ranging from 83.1 ± 0.7 (mean ± SD) to 86.3 ± 1.4 (mean ± SD). The median KDT 50 for deltamethrin, permethrin and lambda-cyhalothrin were 24.9-30. 3 min, 24.3-34.4 min and 26.7-32.8 min, respectively. The KDT 95 were 55.2-90.9 min for deltamethrin, 54.3-94. 6 min for permethrin and 64.5-69.2 min for lambda-cyhalothrin. Conclusions: The productive habitats for A. aegypti mosquitoes found in Dar es Salaam were water storage containers, discarded tins and tyres. There was a reduced susceptibility of A. aegypti to and emergence of resistance against pyrethroid-based insecticides. The documented differences in the resistance profiles of A. aegypti mosquitoes warrants regular monitoring the pattern concerning resistance against pyrethroid-based insecticides and define dengue vector control strategies.

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Section: Discussionmentioning

confidence: 99%

Habitat productivity and pyrethroid susceptibility status of Aedes aegypti mosquitoes in Dar es Salaam, Tanzania

et al. 2017

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“…quinquefasciatus larvae hang at an angle to the surface of the water. The collection of larvae was carried out as described by Yadouléton et al, (2015). First instar larvae of mosquito larvae was collected from stagnant water from a compound in the University of Jos students' Village Hostel.…”

Section: Sample Collection the Mosquito Larvaementioning

confidence: 99%

“…Mosquito-transmitted diseases remain a major cause of the loss of human life worldwide with more than 700 million people suffering from the diseases annually (Taubes, 1997). C. quinquefasciatus (Diptera: Culicidae) is widelydistributed in tropical and subtropical areas and is the most important vector of filarialparasite Wuchereria bancrofti, although Anopheles gambiae s.l and An.…”

Section: Introductionmentioning

confidence: 99%

“…Culex quinquefasciatus, a vector of lymphatic filariasis is widely distributed in tropical zones with around 120 million people infected wordwide and 44 million people having infected worldwide and 44 million people having common chronic manifestation (Bernhard et al, 2003). Despite its debilitating effects, lymphatic filariasis is given a very low control priority (Ramarah et al, 2000;Yadouléton et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Yadouléton et al, (2015) showed that wild populations of Cx. quinquefasciatus have developed resistance against pyrethroids, organochlorine and carbamate.…”

Section: Introductionmentioning

confidence: 99%

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Studies on the Insecticidal Activities of Pseudocedrela kotschyi on Culex quinquefasciatus Larvae and the Maize Weevil (Sitophilus zeamais) Motschulsky

Dawet¹,

Yakubu²,

Meshach³

2017

Int.J.Curr.Res.Aca.Rev.

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Article InfoCulex quinquefasciatus is the vector that transmits the causative agent of filariasis which poses a great threat to the world at large. Storage pest are nuisance to farmers because they destroy farm products either in the store or in the farm. In this study, the insecticidal activity of Pseudocedrela kotschyi stem bark extract was tested against the fourth instar larvae of Culex quinquefasciatus and adult Sitophilus zeamais. A total of three hundred and sixty 4 th instar larvae of Culex quinquefasciatus were divided into six groups each consisting of three replicates containing twenty larvae each. Groups one to four were each administered one of the following dose: 1000mg, 250mg, 125mg and 62.5mg of the ethanolic stem bark extract of P. kotschyi. Group five was treated with a standard drug (permethrin 0.6%) and the last group was neither treated with the extract nor the standard drug. The highest concentration 1000mg of the plant extract had 98.33% mortality followed by 250mg which exhibited 61.67%, 125mg with 48.33% mortality and 62.5 with 25%. There was 100% mortality in the group treated with standard drug and no mortality in the control. Analysis of variance showed significant difference (p<0.05) in the mortality of larvae between the different extract levels.The mortality of the Sitophilus zeamais was observed for 7 daysafter exposure. The highest percentage mortality of 53.33% was recorded inthe weevils treated with 750mgof the plant extract followed by 1750mg which had 50% and the lowest concentration of 500mg plant extract had the lowest mortality of33.33%. However, there is no significant difference (p>0.05) between the mortality of the groups administered extract at different concentrations. From the result, it can be tentatively concluded here; based on this research that P. kotschyi can act as a bio-pesticide of plant origin which will be less toxic to man and other organisms.

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Biological Control of Culex quinquefasciatus Say, 1823 (Diptera: Culicidae), the Ubiquitous Vector for Lymphatic Filariasis: A Review

Naik

2018

Lymphatic Filariasis

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Insecticide resistance status in Culex quinquefasciatus in Benin

Cited by 53 publications

References 22 publications

Habitat productivity and pyrethroid susceptibility status of Aedes aegypti mosquitoes in Dar es Salaam, Tanzania

Habitat productivity and pyrethroid susceptibility status of Aedes aegypti mosquitoes in Dar es Salaam, Tanzania

Studies on the Insecticidal Activities of Pseudocedrela kotschyi on Culex quinquefasciatus Larvae and the Maize Weevil (Sitophilus zeamais) Motschulsky

Biological Control of Culex quinquefasciatus Say, 1823 (Diptera: Culicidae), the Ubiquitous Vector for Lymphatic Filariasis: A Review

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