Abdou Talipouo , Patricia Doumbe-Belisse , Carmène S. Ngadjeu , Landre Djamouko-Djonkam , Elysée Nchoutpouen , Roland Bamou , Nadège Sonhafouo-Chiana , Audrey Paul Marie Mayi , Gisèle Aurélie Dadji Foko , Parfait Awono-Ambene , Sévilor Kekeunou , Charles S. Wondji , Christophe Antonio-Nkondjio
{"title":"针对疟疾媒介的灭鼠干预也影响了库蚊在喀麦隆雅温得市的分布","authors":"Abdou Talipouo , Patricia Doumbe-Belisse , Carmène S. Ngadjeu , Landre Djamouko-Djonkam , Elysée Nchoutpouen , Roland Bamou , Nadège Sonhafouo-Chiana , Audrey Paul Marie Mayi , Gisèle Aurélie Dadji Foko , Parfait Awono-Ambene , Sévilor Kekeunou , Charles S. Wondji , Christophe Antonio-Nkondjio","doi":"10.1016/j.crpvbd.2023.100136","DOIUrl":null,"url":null,"abstract":"<div><p>Although <em>Culex</em> species are considered to be equally affected by control measures targeting malaria vectors, there is still not enough evidence of the impact of interventions such as larviciding on the distribution of these mosquito species. The present study assessed the impact of a larviciding trial targeting malaria vectors on <em>Culex</em> mosquito species in the city of Yaoundé, Cameroon. A cluster randomized trial comparing 13 treated clusters and 13 untreated clusters was implemented. Data were collected at baseline and during the larviciding intervention, from March 2017 to November 2020. The microbial larvicide VectoMax G was applied once every 2 weeks in the intervention areas. Adult mosquitoes were collected using CDC light traps in both intervention and non-intervention areas and compared between arms. Globally, larviciding intervention was associated with 69% reduction in aquatic habitats with <em>Culex</em> larvae and 36.65% reduction of adult <em>Culex</em> densities in houses. Adult <em>Culex</em> densities were reduced both indoors (35.26%) and outdoors (42.37%). No change in the composition of <em>Culex</em> species was recorded. The study suggests a high impact of larviciding on <em>Culex</em> mosquito species distribution. The impact of the intervention can be improved if typical <em>Culex</em> breeding habitats including pit latrines are targeted.</p></div>","PeriodicalId":94311,"journal":{"name":"Current research in parasitology & vector-borne diseases","volume":"4 ","pages":"Article 100136"},"PeriodicalIF":1.7000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon\",\"authors\":\"Abdou Talipouo , Patricia Doumbe-Belisse , Carmène S. Ngadjeu , Landre Djamouko-Djonkam , Elysée Nchoutpouen , Roland Bamou , Nadège Sonhafouo-Chiana , Audrey Paul Marie Mayi , Gisèle Aurélie Dadji Foko , Parfait Awono-Ambene , Sévilor Kekeunou , Charles S. Wondji , Christophe Antonio-Nkondjio\",\"doi\":\"10.1016/j.crpvbd.2023.100136\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Although <em>Culex</em> species are considered to be equally affected by control measures targeting malaria vectors, there is still not enough evidence of the impact of interventions such as larviciding on the distribution of these mosquito species. The present study assessed the impact of a larviciding trial targeting malaria vectors on <em>Culex</em> mosquito species in the city of Yaoundé, Cameroon. A cluster randomized trial comparing 13 treated clusters and 13 untreated clusters was implemented. Data were collected at baseline and during the larviciding intervention, from March 2017 to November 2020. The microbial larvicide VectoMax G was applied once every 2 weeks in the intervention areas. Adult mosquitoes were collected using CDC light traps in both intervention and non-intervention areas and compared between arms. Globally, larviciding intervention was associated with 69% reduction in aquatic habitats with <em>Culex</em> larvae and 36.65% reduction of adult <em>Culex</em> densities in houses. Adult <em>Culex</em> densities were reduced both indoors (35.26%) and outdoors (42.37%). No change in the composition of <em>Culex</em> species was recorded. The study suggests a high impact of larviciding on <em>Culex</em> mosquito species distribution. The impact of the intervention can be improved if typical <em>Culex</em> breeding habitats including pit latrines are targeted.</p></div>\",\"PeriodicalId\":94311,\"journal\":{\"name\":\"Current research in parasitology & vector-borne diseases\",\"volume\":\"4 \",\"pages\":\"Article 100136\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Current research in parasitology & vector-borne diseases\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2667114X23000249\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PARASITOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current research in parasitology & vector-borne diseases","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2667114X23000249","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PARASITOLOGY","Score":null,"Total":0}
Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon
Although Culex species are considered to be equally affected by control measures targeting malaria vectors, there is still not enough evidence of the impact of interventions such as larviciding on the distribution of these mosquito species. The present study assessed the impact of a larviciding trial targeting malaria vectors on Culex mosquito species in the city of Yaoundé, Cameroon. A cluster randomized trial comparing 13 treated clusters and 13 untreated clusters was implemented. Data were collected at baseline and during the larviciding intervention, from March 2017 to November 2020. The microbial larvicide VectoMax G was applied once every 2 weeks in the intervention areas. Adult mosquitoes were collected using CDC light traps in both intervention and non-intervention areas and compared between arms. Globally, larviciding intervention was associated with 69% reduction in aquatic habitats with Culex larvae and 36.65% reduction of adult Culex densities in houses. Adult Culex densities were reduced both indoors (35.26%) and outdoors (42.37%). No change in the composition of Culex species was recorded. The study suggests a high impact of larviciding on Culex mosquito species distribution. The impact of the intervention can be improved if typical Culex breeding habitats including pit latrines are targeted.