The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North Cameroon
Abstract Background Following the recent discovery of the role of Anopheles rufipes Gough, 1910 in human malaria transmission in the northern savannah of Cameroon, we report here additional information on its feeding and resting habits and its susceptibility to the pyrethroid insecticide deltamethri...
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| Format: | Article |
| Language: | English |
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BMC
2018-04-01
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| Series: | Parasites & Vectors |
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| Online Access: | http://link.springer.com/article/10.1186/s13071-018-2809-5 |
| _version_ | 1828526266267992064 |
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| author | Parfait H. Awono-Ambene Josiane Etang Christophe Antonio-Nkondjio Cyrille Ndo Wolfgang Ekoko Eyisap Michael C. Piameu Elysée S. Mandeng Ranaise L. Mbakop Jean Claude Toto Salomon Patchoke Abraham P. Mnzava Tessa B. Knox Martin Donnelly Etienne Fondjo Jude D. Bigoga |
| author_facet | Parfait H. Awono-Ambene Josiane Etang Christophe Antonio-Nkondjio Cyrille Ndo Wolfgang Ekoko Eyisap Michael C. Piameu Elysée S. Mandeng Ranaise L. Mbakop Jean Claude Toto Salomon Patchoke Abraham P. Mnzava Tessa B. Knox Martin Donnelly Etienne Fondjo Jude D. Bigoga |
| author_sort | Parfait H. Awono-Ambene |
| collection | DOAJ |
| description | Abstract Background Following the recent discovery of the role of Anopheles rufipes Gough, 1910 in human malaria transmission in the northern savannah of Cameroon, we report here additional information on its feeding and resting habits and its susceptibility to the pyrethroid insecticide deltamethrin. Methods From 2011 to 2015, mosquito samples were collected in 38 locations across Garoua, Mayo Oulo and Pitoa health districts in North Cameroon. Adult anophelines collected using outdoor clay pots, window exit traps and indoor spray catches were checked for feeding status, blood meal origin and Plasmodium circumsporozoite protein. The susceptibility of field-collected An. rufipes to deltamethrin was assessed using WHO standard procedures. Results Of 9327 adult Anopheles collected in the 38 study sites, An. rufipes (6.5%) was overall the fifth most abundant malaria vector species following An. arabiensis (52.4%), An. funestus (s.l.) (20.8%), An. coluzzii (12.6%) and An. gambiae (6.8%). This species was found outdoors (51.2%) or entering houses (48.8%) in 35 suburban and rural locations, together with main vector species. Apart from human blood with index of 37%, An. rufipes also fed on animals including cows (52%), sheep (49%), pigs (16%), chickens (2%) and horses (1%). The overall parasite infection rate of this species was 0.4% based on the detection of P. falciparum circumsporozoite proteins in two of 517 specimens tested. Among the 21 An. rufipes populations assessed for deltamethrin susceptibility, seven populations were classified as “susceptible” (mortality ≥ 98%) , ten as “probable resistant” with a mortality range of 90–97% and four as “resistant” with a mortality range of 80–89%. Conclusions This study revealed changeable resting and feeding behaviour of An. rufipes, as well as further evidence on its ability to carry human malaria parasites in North Cameroon. Besides, this species is developing physiological resistance to deltamethrin insecticide which is used in treated nets and agriculture throughout the country, and should be regarded as one of potential targets for the control of residual malaria parasite transmission in Africa. |
| first_indexed | 2024-12-11T21:21:34Z |
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| institution | Directory Open Access Journal |
| issn | 1756-3305 |
| language | English |
| last_indexed | 2024-12-11T21:21:34Z |
| publishDate | 2018-04-01 |
| publisher | BMC |
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| series | Parasites & Vectors |
| spelling | doaj.art-78c8cddbdd714656abf1c616e4696cb02022-12-22T00:50:27ZengBMCParasites & Vectors1756-33052018-04-0111111110.1186/s13071-018-2809-5The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North CameroonParfait H. Awono-Ambene0Josiane Etang1Christophe Antonio-Nkondjio2Cyrille Ndo3Wolfgang Ekoko Eyisap4Michael C. Piameu5Elysée S. Mandeng6Ranaise L. Mbakop7Jean Claude Toto8Salomon Patchoke9Abraham P. Mnzava10Tessa B. Knox11Martin Donnelly12Etienne Fondjo13Jude D. Bigoga14Research Institute of Yaounde (IRY), Organization de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC)Research Institute of Yaounde (IRY), Organization de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC)Research Institute of Yaounde (IRY), Organization de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC)Research Institute of Yaounde (IRY), Organization de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC)Faculty of Sciences, University of DoualaEcole des Sciences de la Santé, Université Catholique d’Afrique CentraleFaculty of Sciences, University of Yaoundé IFaculty of Sciences, University of Yaoundé IResearch Institute of Yaounde (IRY), Organization de Coordination pour la lutte contre les Endémies en Afrique Centrale (OCEAC)National Malaria Control Programme, Ministry of Public HealthThe African Leaders Malaria Alliance (ALMA)Global Malaria Programme, World Health OrganizationDepartment of Vector Biology, Liverpool School of Tropical MedicineNational Malaria Control Programme, Ministry of Public HealthNational Reference Unit for Vector Control, The Biotechnology Center, University of Yaoundé IAbstract Background Following the recent discovery of the role of Anopheles rufipes Gough, 1910 in human malaria transmission in the northern savannah of Cameroon, we report here additional information on its feeding and resting habits and its susceptibility to the pyrethroid insecticide deltamethrin. Methods From 2011 to 2015, mosquito samples were collected in 38 locations across Garoua, Mayo Oulo and Pitoa health districts in North Cameroon. Adult anophelines collected using outdoor clay pots, window exit traps and indoor spray catches were checked for feeding status, blood meal origin and Plasmodium circumsporozoite protein. The susceptibility of field-collected An. rufipes to deltamethrin was assessed using WHO standard procedures. Results Of 9327 adult Anopheles collected in the 38 study sites, An. rufipes (6.5%) was overall the fifth most abundant malaria vector species following An. arabiensis (52.4%), An. funestus (s.l.) (20.8%), An. coluzzii (12.6%) and An. gambiae (6.8%). This species was found outdoors (51.2%) or entering houses (48.8%) in 35 suburban and rural locations, together with main vector species. Apart from human blood with index of 37%, An. rufipes also fed on animals including cows (52%), sheep (49%), pigs (16%), chickens (2%) and horses (1%). The overall parasite infection rate of this species was 0.4% based on the detection of P. falciparum circumsporozoite proteins in two of 517 specimens tested. Among the 21 An. rufipes populations assessed for deltamethrin susceptibility, seven populations were classified as “susceptible” (mortality ≥ 98%) , ten as “probable resistant” with a mortality range of 90–97% and four as “resistant” with a mortality range of 80–89%. Conclusions This study revealed changeable resting and feeding behaviour of An. rufipes, as well as further evidence on its ability to carry human malaria parasites in North Cameroon. Besides, this species is developing physiological resistance to deltamethrin insecticide which is used in treated nets and agriculture throughout the country, and should be regarded as one of potential targets for the control of residual malaria parasite transmission in Africa.http://link.springer.com/article/10.1186/s13071-018-2809-5Malaria vectorAnopheles rufipesBionomicsDeltamethrin susceptibility |
| spellingShingle | Parfait H. Awono-Ambene Josiane Etang Christophe Antonio-Nkondjio Cyrille Ndo Wolfgang Ekoko Eyisap Michael C. Piameu Elysée S. Mandeng Ranaise L. Mbakop Jean Claude Toto Salomon Patchoke Abraham P. Mnzava Tessa B. Knox Martin Donnelly Etienne Fondjo Jude D. Bigoga The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North Cameroon Parasites & Vectors Malaria vector Anopheles rufipes Bionomics Deltamethrin susceptibility |
| title | The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North Cameroon |
| title_full | The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North Cameroon |
| title_fullStr | The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North Cameroon |
| title_full_unstemmed | The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North Cameroon |
| title_short | The bionomics of the malaria vector Anopheles rufipes Gough, 1910 and its susceptibility to deltamethrin insecticide in North Cameroon |
| title_sort | bionomics of the malaria vector anopheles rufipes gough 1910 and its susceptibility to deltamethrin insecticide in north cameroon |
| topic | Malaria vector Anopheles rufipes Bionomics Deltamethrin susceptibility |
| url | http://link.springer.com/article/10.1186/s13071-018-2809-5 |
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