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Community-Based Control of Malaria Vectors Using Bacillus thuringiensis var. Israelensis (Bti) in Rwanda
- Source :
- International Journal of Environmental Research and Public Health 19 (2022) 11, International Journal of Environmental Research and Public Health, 19, International Journal of Environmental Research and Public Health; Volume 19; Issue 11; Pages: 6699, International Journal of Environmental Research and Public Health, 19(11):6699. Multidisciplinary Digital Publishing Institute (MDPI), International Journal of Environmental Research and Public Health, 19(11), International Journal of Environmental Research and Public Health, 19, 11, International journal of environmental research and public health, 19(11):6699. Multidisciplinary Digital Publishing Institute (MDPI)
- Publication Year :
- 2022
-
Abstract
- Contains fulltext : 250889.pdf (Publisher’s version ) (Open Access) Larval source management (LSM) programs for control of malaria vectors are often vertically organized, while there is much potential for involving local communities in program implementation. To address this, we evaluated the entomological impact of community-based application of Bacillus thuringiensis var. israelensis (Bti) in a rice irrigation scheme in Ruhuha, Rwanda. A non-randomized trial with control compared a Bti implementation program that was supervised by the project team (ES) with a program that was led and carried out by local rice farming communities (CB). One other area served as a control to assess mosquito populations without Bti application. Entomological surveys were carried out every two weeks and assessed the presence and abundance of the larval, pupal, and adult stages of Anopheles mosquitoes. In ES, the per round reduction in Anopheles larval habitats was estimated at 49%. This reduction was less in CB (28%) and control (22%) although the per round reduction in CB was still significantly higher than in control. Pupal production was almost completely prevented from round 5 (out of 10) onwards in both CB (average habitat occupancy 0.43%) and ES intervention arms (average habitat occupancy 0.27%), whereas pupal occupancy rates were on average 12.8% from round 5 onwards in the control. Emergence of adult mosquitoes from rice fields was thus prevented although this was not directly noticeable in adult An. gambiae populations in houses nearby the rice fields. Together with our earlier work on the willingness to financially contribute to the LSM program and the high perceived safety and acceptance of the Bti product, the current study demonstrates that, in an environment with limited resources, communities could become more engaged in LSM program implementation and contribute directly to malaria vector control in their environment. 14 p.
- Subjects :
- Bacillus thuringiensis var. israelensis
Kwantitatieve Veterinaire Epidemiologie
ANOPHELES MOSQUITOS
Health, Toxicology and Mutagenesis
GAMBIAE
fungi
Public Health, Environmental and Occupational Health
Quantitative Veterinary Epidemiology
larval source management
vector control
NETS
community engagement
PE&RC
Laboratorium voor Entomologie
PREVENTION
MANAGEMENT
Laboratory of Entomology
Bacillus thuringiensis var
israelensis
Anthropology and Development Studies
Subjects
Details
- Language :
- English
- ISSN :
- 16617827 and 16604601
- Volume :
- 19
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- International journal of environmental research and public health
- Accession number :
- edsair.doi.dedup.....de75f706d4bd81e6877d27bbf6e31603