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Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon)

The poor management of the urban environment in sub-Saharan Africa is affecting Anopheles gambiae susceptibility to insecticides. A study was undertaken to assess the influence of breeding sites physicochemical parameters on malaria vectors population tolerance to insecticides. A total of 18, 262 la...

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Autores principales: Tene Fossog, Billy, Kopya, Edmond, Ndo, Cyrille, Menze-Djantio, Benjamin, Costantini, Carlo, Njiokou, Flaubert, Awono-Ambene, Parfait, Antonio-Nkondjio, Christophe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3376768/
https://www.ncbi.nlm.nih.gov/pubmed/22719775
http://dx.doi.org/10.1155/2012/429817
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author Tene Fossog, Billy
Kopya, Edmond
Ndo, Cyrille
Menze-Djantio, Benjamin
Costantini, Carlo
Njiokou, Flaubert
Awono-Ambene, Parfait
Antonio-Nkondjio, Christophe
author_facet Tene Fossog, Billy
Kopya, Edmond
Ndo, Cyrille
Menze-Djantio, Benjamin
Costantini, Carlo
Njiokou, Flaubert
Awono-Ambene, Parfait
Antonio-Nkondjio, Christophe
author_sort Tene Fossog, Billy
collection PubMed
description The poor management of the urban environment in sub-Saharan Africa is affecting Anopheles gambiae susceptibility to insecticides. A study was undertaken to assess the influence of breeding sites physicochemical parameters on malaria vectors population tolerance to insecticides. A total of 18, 262 larvae collected from 104 breeding sites were exposed to diagnostic concentrations of permethrin and deltamethrin. Larvae originating from cultivated sites were more tolerant than larvae from polluted or nonpolluted sites. No significant difference was observed between polluted and nonpolluted sites. Field larvae were 142 to 325 times and 6.08 to 9.57 times more tolerant to deltamethrin and permethrin, respectively, than larvae of the A. gambiae Kisumu strain used as control. A low but significant correlation was detected between physicochemical parameters and larval insecticide tolerance. Cultivated sites were negatively and significantly correlated to larval tolerance to both deltamethrin (r = −0.421; P < 0.0001) and permethrin (r = −0.392; P < 0.0001). Dissolved oxygen (r = +0.466; P < 0.0001) and ammonia (r = −0.205; P = 0.04) appeared significantly correlated to larval tolerance to deltamethrin. The data suggest a direct correlation between some characteristics from the breeding sites and larval tolerance to pyrethroids.
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spelling pubmed-33767682012-06-20 Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon) Tene Fossog, Billy Kopya, Edmond Ndo, Cyrille Menze-Djantio, Benjamin Costantini, Carlo Njiokou, Flaubert Awono-Ambene, Parfait Antonio-Nkondjio, Christophe J Trop Med Research Article The poor management of the urban environment in sub-Saharan Africa is affecting Anopheles gambiae susceptibility to insecticides. A study was undertaken to assess the influence of breeding sites physicochemical parameters on malaria vectors population tolerance to insecticides. A total of 18, 262 larvae collected from 104 breeding sites were exposed to diagnostic concentrations of permethrin and deltamethrin. Larvae originating from cultivated sites were more tolerant than larvae from polluted or nonpolluted sites. No significant difference was observed between polluted and nonpolluted sites. Field larvae were 142 to 325 times and 6.08 to 9.57 times more tolerant to deltamethrin and permethrin, respectively, than larvae of the A. gambiae Kisumu strain used as control. A low but significant correlation was detected between physicochemical parameters and larval insecticide tolerance. Cultivated sites were negatively and significantly correlated to larval tolerance to both deltamethrin (r = −0.421; P < 0.0001) and permethrin (r = −0.392; P < 0.0001). Dissolved oxygen (r = +0.466; P < 0.0001) and ammonia (r = −0.205; P = 0.04) appeared significantly correlated to larval tolerance to deltamethrin. The data suggest a direct correlation between some characteristics from the breeding sites and larval tolerance to pyrethroids. Hindawi Publishing Corporation 2012 2012-06-07 /pmc/articles/PMC3376768/ /pubmed/22719775 http://dx.doi.org/10.1155/2012/429817 Text en Copyright © 2012 Billy Tene Fossog et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Tene Fossog, Billy
Kopya, Edmond
Ndo, Cyrille
Menze-Djantio, Benjamin
Costantini, Carlo
Njiokou, Flaubert
Awono-Ambene, Parfait
Antonio-Nkondjio, Christophe
Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon)
title Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon)
title_full Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon)
title_fullStr Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon)
title_full_unstemmed Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon)
title_short Water Quality and Anopheles gambiae Larval Tolerance to Pyrethroids in the Cities of Douala and Yaoundé (Cameroon)
title_sort water quality and anopheles gambiae larval tolerance to pyrethroids in the cities of douala and yaoundé (cameroon)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3376768/
https://www.ncbi.nlm.nih.gov/pubmed/22719775
http://dx.doi.org/10.1155/2012/429817
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