Word: gambusia
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Dates: during 1970-1979
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Biological Controls. To combat California's rampant mosquitoes, researchers hope to develop new pesticides, but mainly for "emergencies." They now prefer to use the bugs' natural enemies. Culex, for example, can be controlled by the mosquito fish (gambusia) and the common guppy which eat mosquito larvae in water. Certain bacilli, when applied to pasture land, also kill mosquito larvae. Another method includes releasing large numbers of male mosquitoes of the same species but of different strains. Because of genetic incompatibilities, the eggs of the females fail to hatch...