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 tria...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Current Research in Parasitology and Vector-Borne Diseases |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667114X23000249 |
| _version_ | 1797371971430776832 |
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| author | 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 |
| author_facet | 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 |
| author_sort | Abdou Talipouo |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-08T18:29:35Z |
| format | Article |
| id | doaj.art-3fc0ab29469d499b89c743633df27b85 |
| institution | Directory Open Access Journal |
| issn | 2667-114X |
| language | English |
| last_indexed | 2024-03-08T18:29:35Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Current Research in Parasitology and Vector-Borne Diseases |
| spelling | doaj.art-3fc0ab29469d499b89c743633df27b852023-12-30T04:45:17ZengElsevierCurrent Research in Parasitology and Vector-Borne Diseases2667-114X2023-01-014100136Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, CameroonAbdou Talipouo0Patricia Doumbe-Belisse1Carmène S. Ngadjeu2Landre Djamouko-Djonkam3Elysée Nchoutpouen4Roland Bamou5Nadège Sonhafouo-Chiana6Audrey Paul Marie Mayi7Gisèle Aurélie Dadji Foko8Parfait Awono-Ambene9Sévilor Kekeunou10Charles S. Wondji11Christophe Antonio-Nkondjio12Institut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Faculty of Sciences, University of Yaoundé I, P.O. Box 337, Yaoundé, Cameroon; Corresponding author. Institut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon.Institut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Faculty of Sciences, University of Yaoundé I, P.O. Box 337, Yaoundé, CameroonInstitut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Faculty of Sciences, University of Yaoundé I, P.O. Box 337, Yaoundé, CameroonInstitut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Faculty of Sciences, University of Dschang, Box 337, Dschang, CameroonCentre for Research in Infectious Disease (CRID), Yaoundé, P.O. Box 13591, CameroonInstitut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Faculty of Sciences, University of Dschang, Box 337, Dschang, CameroonInstitut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Faculty of Health Sciences, University of Buea, Buea, CameroonInstitut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Faculty of Sciences, University of Dschang, Box 337, Dschang, CameroonLaboratory of Zoology, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, CameroonInstitut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, CameroonFaculty of Sciences, University of Yaoundé I, P.O. Box 337, Yaoundé, CameroonCentre for Research in Infectious Disease (CRID), Yaoundé, P.O. Box 13591, Cameroon; Vector Biology Liverpool School of Tropical Medicine Pembroke Place, Liverpool, L3 5QA, UKInstitut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, Yaoundé, Cameroon; Vector Biology Liverpool School of Tropical Medicine Pembroke Place, Liverpool, L3 5QA, UK; Corresponding author. Institut de Recherche de Yaoundé (IRY), Organisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale (OCEAC), P.O. Box 288, 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.http://www.sciencedirect.com/science/article/pii/S2667114X23000249LarvicidingCulexBacillus thuringiensisBacillus sphaericusYaoundé |
| spellingShingle | 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 Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon Current Research in Parasitology and Vector-Borne Diseases Larviciding Culex Bacillus thuringiensis Bacillus sphaericus Yaoundé |
| title | Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon |
| title_full | Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon |
| title_fullStr | Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon |
| title_full_unstemmed | Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon |
| title_short | Larviciding intervention targeting malaria vectors also affects Culex mosquito distribution in the city of Yaoundé, Cameroon |
| title_sort | larviciding intervention targeting malaria vectors also affects culex mosquito distribution in the city of yaounde cameroon |
| topic | Larviciding Culex Bacillus thuringiensis Bacillus sphaericus Yaoundé |
| url | http://www.sciencedirect.com/science/article/pii/S2667114X23000249 |
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