Abstract

The effect ofCyrtobagous salviniae, Samea multiplicalis, andPaulinia acuminata on the growth ofSalvinia molesta was assessed in relation to temperature in field cages at 2 sites in Brazil, a canal with running-water and a lagoon with stillwater. Each insect species reduced the growth ofS. molesta over a mean leaftemperature range of 16–30°C, causing more damage as temperature increased. There was no difference between the 3 species in response to temperature. These results and their implication to the performance of these insects as biological control agents againstS. molesta are discussed.

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