Changing distribution and abundance of the malaria vector Anopheles merus in Mpumalanga Province, South Africa
The aim of this study was to assess qualitative trends in the distribution and abundance of this species over a 9-year period
Abstract
The malaria vector Anopheles merus occurs in the Mpumalanga Province of South Africa. As its contribution to malaria transmission in South Africa has yet to be ascertained, an intensification of surveillance is necessary to provide baseline information on this species.
The aim of this study was therefore to map Anmerus breeding sites in the Ehlanzeni District of Mpumalanga Province and to assess qualitative trends in the distribution and relative abundance of this species over a 9-year period.
The study was carried out during the period 2005–2014 in the 4 high-risk municipalities of Ehlanzeni District. 52 breeding sites were chosen from all water bodies that produced anopheline mosquitoes. The study data were extracted from historical entomological records that are captured monthly. Results: Of the 15 058 Anopheles mosquitoes collected, 64% were Anmerus. The abundance and distribution of Anmerus increased throughout the 4 municipalities in Ehlanzeni District during the study period.
The expanded distribution and increased abundance of Anmerus in the Ehlanzeni District may contribute significantly to locally acquired malaria in Mpumalanga Province, likely necessitating the incorporation of additional vector control methods specifically directed against populations of this species.
This research was supported by the UK Department for International Development’s Operational Research Capacity Building Programme led by the International Union Against TB and Lung Disease (The Union)
Citation
Mbokazi F, Coetzee M, Brooke B, Govere J, Reid A, Owiti P, Kosgei R, Zhou S, Magagula R, Kok G, Namboze J, Tweya H, Mabuza A. Changing distribution and abundance of the malaria vector Anopheles merus in Mpumalanga Province, South Africa. Public Health Action [Internet]. 2018 Apr 25 [cited 2018 Jun 25];8(S1):39–43. Available from: http://www.ingentaconnect.com/content/10.5588/pha.17.0034