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Biological Effects of Fluctuation of Water Level on Anopheline Breeding
E. Harold Hinman
E. Harold Hinman
Division of Malaria Control, Department of Health and Safety, Tennessee Valley Authority, Wilson Dam, Albama
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Summary
Fluctuation of pool level can be made an important anti-larval measure on impounded waters. Its chief beneficial effect is in creating an environment which is unsuitable to the breeding of A. quadrimaculatus. This is accomplished mainly by the stranding of flotage (debris) when the elevation is lowered, and also by the deleterious effect upon those types of vegetation which cannot withstand alternate dewatering and inundation. Certain reservoirs have been claimed to be successfully controlled of anopheline breeding by fluctuation alone.
The type of fluctuation cycle to be recommended is necessarily limited by the size of the reservoir, the supply of water, the purpose for which it was impounded, the character of the shoreline, and the available supplementary control measures (marginal drainage, herbicidal work, and proper pre-impoundage reservoir preparation).
Author Notes
Read at the Thirty-first Annual Meeting of the National Malaria Committee, November 30 to December 3, 1937, at New Orleans, La.
| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 591 | 423 | 121 |
| Full Text Views | 7 | 5 | 4 |
| PDF Downloads | 11 | 9 | 7 |