Abstract
Abstract We evaluated the effect of monthly applications of Romanomermis iyengari on populations of larval stages of the mosquito Anopheles pseudopunctipennis , in an endemic area of malaria in Pochutla, Oaxaca, Mexico. In 1999, applications of R. iyengari were made for 9 months on four natural breeding sites of An. pseudopunctipennis with a total area of approximately 30,000 m 2 . An application rate of 3000 nematodes m −2 was used. Parasitism of mosquito larvae ranged from 46 to 100%, and the population reduction of the mosquito larvae varied from 38.1 to 99.8%. In two breeding sites R. iyengari was able to recycle and persisted for 5 months. The monthly applications of R. iyengari efficiently controlled the populations of larval An. pseudopunctipennis , thus reducing the risk of malaria transmission to people living nearby breeding sites.
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