Predators and Pathogens for Mosquito Control

H. C. Chapman Entomology Research Division, Agricultural Research Service, U. S. Department of Agriculture, Lake Charles, Louisiana 70601

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J. J. Petersen Entomology Research Division, Agricultural Research Service, U. S. Department of Agriculture, Lake Charles, Louisiana 70601

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T. Fukuda Entomology Research Division, Agricultural Research Service, U. S. Department of Agriculture, Lake Charles, Louisiana 70601

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Summary

Although recognizing the benefit derived from all predators in the reduction of mosquito populations in nature, the only predators that can be produced for mosquito control are a mosquito (Toxorhynchites), larvivorous fish (Gambusia affinis and Poecilia reticulata), and annual fish. Representative pathogens of the protozoa, fungi, bacteria, viruses, and nematodes were also discussed. However, at the moment, only the protozoan species (Nosema stegomyiae and Pleistophora culicis), and a nematode (Reesimermis nielseni) have been developed to the extent that they could be mass reared and released against specific mosquito populations.

The further development and use of other biological control organisms in integrated control programs can only be accomplished by a large increase in both research funds and trained researchers.

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