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Predation Potential of the Water Bugs Sphaerodema rusticum on the Sewage Snails Physa acuta

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Author(s): Aditya G | Raut SK

Journal: Memórias do Instituto Oswaldo Cruz
ISSN 0074-0276

Volume: 97;
Issue: 4;
Start page: 531;
Date: 2002;
Original page

Keywords: sewage drains | snail | Physa acuta | water bug | Sphaerodema rusticum | predation | India

ABSTRACT
The sewage snail Physa acuta is a serious threat to certain economic plants and to the purification plant of sewage works by rendering the biofilters ineffective. Various attempts are being made to control it. The efficacy of the predacious water bugs Sphaerodema rusticum was judged experimentally, in the laboratory in the potential control of P. acuta. It is revealed that, when supplied separately, the first, second and third instar and the adult S. rusticum did not attack P. acuta belonging to 3.1-8 mm, 5.1-8 mm, 7.1-8 mm and
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