Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management?
Abstract Background Malaria, one of the world’s greatest public health challenges, is an endemic disease with stable transmission in Togo. Combating malaria requires an effective vector control. This study provides temporal data on insecticide resistance status in the major malaria vector Anopheles...
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ftdoajarticles:oai:doaj.org/article:34163f90df1e400cabe79f73c9e8cfc5 2023-05-15T15:17:54+02:00 Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? Adjovi D. Amoudji Koffi M. Ahadji-Dabla Aristide Sawdetuo Hien Yawo Georges Apétogbo Bienvenu Yaméogo Diloma Dieudonné Soma Rabila Bamogo Rachid Tinah Atcha-Oubou Roch Kounbobr Dabiré Guillaume Koffivi Ketoh 2019-05-01T00:00:00Z https://doi.org/10.1186/s12936-019-2813-z https://doaj.org/article/34163f90df1e400cabe79f73c9e8cfc5 EN eng BMC http://link.springer.com/article/10.1186/s12936-019-2813-z https://doaj.org/toc/1475-2875 doi:10.1186/s12936-019-2813-z 1475-2875 https://doaj.org/article/34163f90df1e400cabe79f73c9e8cfc5 Malaria Journal, Vol 18, Iss 1, Pp 1-12 (2019) Malaria Anopheles gambiae s.l Resistance kdr ace-1 Vector control Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2019 ftdoajarticles https://doi.org/10.1186/s12936-019-2813-z 2022-12-31T08:56:06Z Abstract Background Malaria, one of the world’s greatest public health challenges, is an endemic disease with stable transmission in Togo. Combating malaria requires an effective vector control. This study provides temporal data on insecticide resistance status in the major malaria vector Anopheles gambiae sensu lato (s.l.) from Togo. Methods Two to 5 days old females of An. gambiae s.l., originating from three localities (Baguida, Kovié, Kolokopé) were subjected to insecticide-impregnated papers during 3 years (2012, 2013, 2016) as follows: organochlorides (4% DDT), pyrethroids (0.05% deltamethrin, 0.75% permethrin, 0.05% lambdacyhalothrin), carbamates (0.4% bendiocarb and 0.1% propoxur), and organophosphates (5% malathion, 0.4% chlorpyrifos methyl, 1% fenitrothion) following the WHO standard protocol. Dead and surviving mosquitoes were stored separately in Eppendorf tubes containing silica gel for DNA extraction, species identification, and kdr and ace-1 genotyping. Results Knockdown times (KDT50 and KDT95) were high in An. gambiae s.l. The lowest KDTs were recorded at Baguida in 2013 for deltamethrin (KDT50 = 24.7, CI [22.4–27.12] and KDT95 = 90.78, CI [76.35–113.49]). No KDTs were recorded for DDT and in some instances for permethrin. In general, An. gambiae s.l. was resistant to most of the four classes of insecticides during the survey periods regardless of locality and year, except to chlorpyrifos methyl. In some instances, mosquitoes were fully susceptible to fenitrothion (Kolokopé: 100% and Kovié: 98.05%, CI [95.82–100.26]) and malathion (100% at both Kolokopé and Kovié) in 2013, and malathion only (Kolokopé; 100%) in 2016. Anopheles coluzzii, An. gambiae and Anopheles arabiensis were the three sibling species identified at the three localities with some hybrids at Baguida (2013), and Kovié (2012 and 2016), respectively. Anopheles gambiae was relatively dominant (61.6%). The kdr 1014F allele frequency was > 0.9 in most of the cases, except at Kolokopé (f (1014F) = 0.63, CI [0.55–0.71]) in 2013. The ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 18 1 |
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English |
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Malaria Anopheles gambiae s.l Resistance kdr ace-1 Vector control Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
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Malaria Anopheles gambiae s.l Resistance kdr ace-1 Vector control Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Adjovi D. Amoudji Koffi M. Ahadji-Dabla Aristide Sawdetuo Hien Yawo Georges Apétogbo Bienvenu Yaméogo Diloma Dieudonné Soma Rabila Bamogo Rachid Tinah Atcha-Oubou Roch Kounbobr Dabiré Guillaume Koffivi Ketoh Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? |
topic_facet |
Malaria Anopheles gambiae s.l Resistance kdr ace-1 Vector control Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background Malaria, one of the world’s greatest public health challenges, is an endemic disease with stable transmission in Togo. Combating malaria requires an effective vector control. This study provides temporal data on insecticide resistance status in the major malaria vector Anopheles gambiae sensu lato (s.l.) from Togo. Methods Two to 5 days old females of An. gambiae s.l., originating from three localities (Baguida, Kovié, Kolokopé) were subjected to insecticide-impregnated papers during 3 years (2012, 2013, 2016) as follows: organochlorides (4% DDT), pyrethroids (0.05% deltamethrin, 0.75% permethrin, 0.05% lambdacyhalothrin), carbamates (0.4% bendiocarb and 0.1% propoxur), and organophosphates (5% malathion, 0.4% chlorpyrifos methyl, 1% fenitrothion) following the WHO standard protocol. Dead and surviving mosquitoes were stored separately in Eppendorf tubes containing silica gel for DNA extraction, species identification, and kdr and ace-1 genotyping. Results Knockdown times (KDT50 and KDT95) were high in An. gambiae s.l. The lowest KDTs were recorded at Baguida in 2013 for deltamethrin (KDT50 = 24.7, CI [22.4–27.12] and KDT95 = 90.78, CI [76.35–113.49]). No KDTs were recorded for DDT and in some instances for permethrin. In general, An. gambiae s.l. was resistant to most of the four classes of insecticides during the survey periods regardless of locality and year, except to chlorpyrifos methyl. In some instances, mosquitoes were fully susceptible to fenitrothion (Kolokopé: 100% and Kovié: 98.05%, CI [95.82–100.26]) and malathion (100% at both Kolokopé and Kovié) in 2013, and malathion only (Kolokopé; 100%) in 2016. Anopheles coluzzii, An. gambiae and Anopheles arabiensis were the three sibling species identified at the three localities with some hybrids at Baguida (2013), and Kovié (2012 and 2016), respectively. Anopheles gambiae was relatively dominant (61.6%). The kdr 1014F allele frequency was > 0.9 in most of the cases, except at Kolokopé (f (1014F) = 0.63, CI [0.55–0.71]) in 2013. The ... |
format |
Article in Journal/Newspaper |
author |
Adjovi D. Amoudji Koffi M. Ahadji-Dabla Aristide Sawdetuo Hien Yawo Georges Apétogbo Bienvenu Yaméogo Diloma Dieudonné Soma Rabila Bamogo Rachid Tinah Atcha-Oubou Roch Kounbobr Dabiré Guillaume Koffivi Ketoh |
author_facet |
Adjovi D. Amoudji Koffi M. Ahadji-Dabla Aristide Sawdetuo Hien Yawo Georges Apétogbo Bienvenu Yaméogo Diloma Dieudonné Soma Rabila Bamogo Rachid Tinah Atcha-Oubou Roch Kounbobr Dabiré Guillaume Koffivi Ketoh |
author_sort |
Adjovi D. Amoudji |
title |
Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? |
title_short |
Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? |
title_full |
Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? |
title_fullStr |
Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? |
title_full_unstemmed |
Insecticide resistance profiles of Anopheles gambiae s.l. in Togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? |
title_sort |
insecticide resistance profiles of anopheles gambiae s.l. in togo and genetic mechanisms involved, during 3-year survey: is there any need for resistance management? |
publisher |
BMC |
publishDate |
2019 |
url |
https://doi.org/10.1186/s12936-019-2813-z https://doaj.org/article/34163f90df1e400cabe79f73c9e8cfc5 |
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Arctic |
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Arctic |
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Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 18, Iss 1, Pp 1-12 (2019) |
op_relation |
http://link.springer.com/article/10.1186/s12936-019-2813-z https://doaj.org/toc/1475-2875 doi:10.1186/s12936-019-2813-z 1475-2875 https://doaj.org/article/34163f90df1e400cabe79f73c9e8cfc5 |
op_doi |
https://doi.org/10.1186/s12936-019-2813-z |
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Malaria Journal |
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18 |
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