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Control or no control: a comparison of the feeding strategies of two salvinia weevils

Control or no control: a comparison of the feeding strategies of two salvinia weevils

Proceedings of the VI International Symposium on Biological Control of Weeds: 551-556

The feeding behaviour of 2 Cyrtobagous spp. can be used to explain their different potential as biological control agents of Salvinia molesta. In laboratory experiments, adults of C. salviniae fed mainly on buds whereas C. singularis fed extensively on other parts of the plant, leaving more buds intact. Larvae of C. salviniae tunnelled into rhizomes, destroying the vascular bundles; larvae of C. singularis mainly fed externally on buds and other exposed tissues of the plants.

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