Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin
Background. Behavioral modification of malaria vectors in response to vector control methods is of great concern. We investigated whether full coverage of long-lasting insecticide-treated mosquito nets (LLINs) may induce a switch in biting behavior in Anopheles funestus, a major malaria vector in Africa. Methods. Human-landing collections were conducted indoor and outdoor in 2 villages (Lokohouè and Tokoli) in Benin before and 1 year and 3 years after implementation of universal LLIN coverage. Proportion of outdoor biting (POB) and median catching times (MCT) were compared. The resistance of A. funestus to deltamethrin was monitored using bioassays. Results. MCT of A. funestus switched from 2 AM in Lokohoué and 3 AM in Tokoli to 5 AM after 3 years (Mann-Whitney U test, P < .0001). In Tokoli, POB increased from 45% to 68.1% (odds ratio = 2.55; 95 confidence interval = 1.72-3.78; P < .0001) 1 year after the universal coverage, whereas POB was unchanged in Lokohoué. In Lokohoué, however, the proportion of A. funestus that bites after 6 AM was 26%. Bioassays showed no resistance to deltamethrin. Conclusions. This study provides evidence for a switch in malaria vectors' biting behavior after the implementation of LLIN at universal coverage. These findings might have direct consequences for malaria control in Africa and highlighted the need for alternative strategies for better targeting malaria vectors.
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Subjects: | L72 - Organismes nuisibles des animaux, L73 - Maladies des animaux, Anopheles, lutte anti-insecte, malaria, vecteur de maladie, résistance aux pesticides, contrôle de maladies, insecticide, deltaméthrine, protection de la santé, http://aims.fao.org/aos/agrovoc/c_462, http://aims.fao.org/aos/agrovoc/c_3885, http://aims.fao.org/aos/agrovoc/c_34312, http://aims.fao.org/aos/agrovoc/c_8164, http://aims.fao.org/aos/agrovoc/c_25427, http://aims.fao.org/aos/agrovoc/c_2327, http://aims.fao.org/aos/agrovoc/c_3887, http://aims.fao.org/aos/agrovoc/c_33971, http://aims.fao.org/aos/agrovoc/c_3512, http://aims.fao.org/aos/agrovoc/c_875, |
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dig-cirad-fr-5672072024-01-28T21:06:38Z http://agritrop.cirad.fr/567207/ http://agritrop.cirad.fr/567207/ Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin. Moiroux Nicolas, Gomez Marinely, Pennetier Cédric, Elanga Emmanuel, Djènontin Armel, Chandre Fabrice, Djegbe Innocent, Guis Hélène, Corbel Vincent. 2012. Journal of Infectious Diseases, 206 (10) : 1622-1629.https://doi.org/10.1093/infdis/jis565 <https://doi.org/10.1093/infdis/jis565> Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin Moiroux, Nicolas Gomez, Marinely Pennetier, Cédric Elanga, Emmanuel Djènontin, Armel Chandre, Fabrice Djegbe, Innocent Guis, Hélène Corbel, Vincent eng 2012 Journal of Infectious Diseases L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles lutte anti-insecte malaria vecteur de maladie résistance aux pesticides contrôle de maladies insecticide deltaméthrine protection de la santé http://aims.fao.org/aos/agrovoc/c_462 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_25427 http://aims.fao.org/aos/agrovoc/c_2327 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_33971 http://aims.fao.org/aos/agrovoc/c_3512 Bénin http://aims.fao.org/aos/agrovoc/c_875 Background. Behavioral modification of malaria vectors in response to vector control methods is of great concern. We investigated whether full coverage of long-lasting insecticide-treated mosquito nets (LLINs) may induce a switch in biting behavior in Anopheles funestus, a major malaria vector in Africa. Methods. Human-landing collections were conducted indoor and outdoor in 2 villages (Lokohouè and Tokoli) in Benin before and 1 year and 3 years after implementation of universal LLIN coverage. Proportion of outdoor biting (POB) and median catching times (MCT) were compared. The resistance of A. funestus to deltamethrin was monitored using bioassays. Results. MCT of A. funestus switched from 2 AM in Lokohoué and 3 AM in Tokoli to 5 AM after 3 years (Mann-Whitney U test, P < .0001). In Tokoli, POB increased from 45% to 68.1% (odds ratio = 2.55; 95 confidence interval = 1.72-3.78; P < .0001) 1 year after the universal coverage, whereas POB was unchanged in Lokohoué. In Lokohoué, however, the proportion of A. funestus that bites after 6 AM was 26%. Bioassays showed no resistance to deltamethrin. Conclusions. This study provides evidence for a switch in malaria vectors' biting behavior after the implementation of LLIN at universal coverage. These findings might have direct consequences for malaria control in Africa and highlighted the need for alternative strategies for better targeting malaria vectors. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/567207/1/document_567207.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1093/infdis/jis565 10.1093/infdis/jis565 info:eu-repo/semantics/altIdentifier/doi/10.1093/infdis/jis565 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1093/infdis/jis565 |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles lutte anti-insecte malaria vecteur de maladie résistance aux pesticides contrôle de maladies insecticide deltaméthrine protection de la santé http://aims.fao.org/aos/agrovoc/c_462 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_25427 http://aims.fao.org/aos/agrovoc/c_2327 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_33971 http://aims.fao.org/aos/agrovoc/c_3512 http://aims.fao.org/aos/agrovoc/c_875 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles lutte anti-insecte malaria vecteur de maladie résistance aux pesticides contrôle de maladies insecticide deltaméthrine protection de la santé http://aims.fao.org/aos/agrovoc/c_462 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_25427 http://aims.fao.org/aos/agrovoc/c_2327 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_33971 http://aims.fao.org/aos/agrovoc/c_3512 http://aims.fao.org/aos/agrovoc/c_875 |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles lutte anti-insecte malaria vecteur de maladie résistance aux pesticides contrôle de maladies insecticide deltaméthrine protection de la santé http://aims.fao.org/aos/agrovoc/c_462 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_25427 http://aims.fao.org/aos/agrovoc/c_2327 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_33971 http://aims.fao.org/aos/agrovoc/c_3512 http://aims.fao.org/aos/agrovoc/c_875 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles lutte anti-insecte malaria vecteur de maladie résistance aux pesticides contrôle de maladies insecticide deltaméthrine protection de la santé http://aims.fao.org/aos/agrovoc/c_462 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_25427 http://aims.fao.org/aos/agrovoc/c_2327 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_33971 http://aims.fao.org/aos/agrovoc/c_3512 http://aims.fao.org/aos/agrovoc/c_875 Moiroux, Nicolas Gomez, Marinely Pennetier, Cédric Elanga, Emmanuel Djènontin, Armel Chandre, Fabrice Djegbe, Innocent Guis, Hélène Corbel, Vincent Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin |
description |
Background. Behavioral modification of malaria vectors in response to vector control methods is of great concern. We investigated whether full coverage of long-lasting insecticide-treated mosquito nets (LLINs) may induce a switch in biting behavior in Anopheles funestus, a major malaria vector in Africa. Methods. Human-landing collections were conducted indoor and outdoor in 2 villages (Lokohouè and Tokoli) in Benin before and 1 year and 3 years after implementation of universal LLIN coverage. Proportion of outdoor biting (POB) and median catching times (MCT) were compared. The resistance of A. funestus to deltamethrin was monitored using bioassays. Results. MCT of A. funestus switched from 2 AM in Lokohoué and 3 AM in Tokoli to 5 AM after 3 years (Mann-Whitney U test, P < .0001). In Tokoli, POB increased from 45% to 68.1% (odds ratio = 2.55; 95 confidence interval = 1.72-3.78; P < .0001) 1 year after the universal coverage, whereas POB was unchanged in Lokohoué. In Lokohoué, however, the proportion of A. funestus that bites after 6 AM was 26%. Bioassays showed no resistance to deltamethrin. Conclusions. This study provides evidence for a switch in malaria vectors' biting behavior after the implementation of LLIN at universal coverage. These findings might have direct consequences for malaria control in Africa and highlighted the need for alternative strategies for better targeting malaria vectors. |
format |
article |
topic_facet |
L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Anopheles lutte anti-insecte malaria vecteur de maladie résistance aux pesticides contrôle de maladies insecticide deltaméthrine protection de la santé http://aims.fao.org/aos/agrovoc/c_462 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_34312 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_25427 http://aims.fao.org/aos/agrovoc/c_2327 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_33971 http://aims.fao.org/aos/agrovoc/c_3512 http://aims.fao.org/aos/agrovoc/c_875 |
author |
Moiroux, Nicolas Gomez, Marinely Pennetier, Cédric Elanga, Emmanuel Djènontin, Armel Chandre, Fabrice Djegbe, Innocent Guis, Hélène Corbel, Vincent |
author_facet |
Moiroux, Nicolas Gomez, Marinely Pennetier, Cédric Elanga, Emmanuel Djènontin, Armel Chandre, Fabrice Djegbe, Innocent Guis, Hélène Corbel, Vincent |
author_sort |
Moiroux, Nicolas |
title |
Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin |
title_short |
Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin |
title_full |
Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin |
title_fullStr |
Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin |
title_full_unstemmed |
Changes in Anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in Benin |
title_sort |
changes in anopheles funestus biting behavior following universal coverage of long-lasting insecticidal nets in benin |
url |
http://agritrop.cirad.fr/567207/ http://agritrop.cirad.fr/567207/1/document_567207.pdf |
work_keys_str_mv |
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