The phenology of malaria mosquitoes in irrigated rice fields in Mali
| Autor: | Y. T. Toure, F.P. Huibers, Willem Takken, E. Klinkenberg |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Mosquito Control
Climate Anopheles gambiae Mali Leerstoelgroep Irrigatie en waterbouwkunde Laboratory of Entomology Drainage burkina-faso anopheles-gambiae complex Ecology biology Phenology transmission Anopheles food and beverages Agriculture PE&RC culicidae Mosquito control Infectious Diseases Irrigation Veterinary (miscellaneous) Water Supply senegal parasitic diseases Animals Humans savanna area Irrigation and Water Engineering Population Density Life Cycle Stages WIMEK fungi Oryza Laboratorium voor Entomologie biology.organism_classification Insect Vectors Malaria Light intensity kenya Agronomy Insect Science identification Paddy field west-africa Parasitology plasmodium-falciparum |
| Zdroj: | Acta Tropica 85 (2003) Acta Tropica, 85, 71-82 |
| ISSN: | 0001-706X |
| DOI: | 10.1016/s0001-706x(02)00254-1 |
| Popis: | A field study was carried out in the large-scale rice irrigation scheme of the Office du Niger in Mali to investigate the relation between anopheline mosquito larval development and small-scale differences in irrigation practices, such as water level, irrigation application and irrigation frequency. The objective of the study was to find out if water management can be used as a tool for vector control to reduce the malaria transmission risk. Larvae of Anopheles gambiae s.s.,; the main malaria vector in the study area, developed mostly in the first 6 weeks after transplanting the rice. During rice development, a succession of anopheline species was observed. This was associated with a marked decrease in light intensity reaching the water surface as plant height increased. Minor differences in water management resulted in noticeable variations in larval densities and species composition. A. gambiae s.s. larvae were most abundant during the early growing stages and almost absent in a closed rice crop. Due to improper drainage after harvest, A. gambiae s.s. breeding was soon re-established in fields where small pools of water were retained. The results suggest that larval mosquito habitats in the Office du Niger can be significantly reduced by water management, simultaneous planting and harvesting and proper drainage of fallow fields. |
| Databáze: | OpenAIRE |
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