Abstract
The individual and interactive effects of mosquitofish (Gambusia affinis Baird and Girard) and green sunfish (Lepomis cyanellus Rafinesque) populations on densities of mosquito immatures and other aquatic fauna were assessed in experimental rice plots over a 12 week period. Mosquitofish, stocked at a much higher rate (2318 per ha) than is usually used in commercial rice fields, increased 88-fold in numbers per minnow trap over a ten week period. Adult green sunfish (7–10 cm TL), stocked at the same rate as mosquitofish, reproduced in the rice plots, but reproductive success was strongly associated with plot depth. Mosquitofish numbers were significantly lower in plots stocked with green sunfish early in the season but this difference soon disappeared.
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