Association ofBotrytis cinereawith Grape Berry Moth Larvae

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Abstract
The potential role of the larvae of Lobesia botrana, the grape berry moth, as a dispersal agent for Botrytis cinerea has been studied with scanning electron microscopy. Numerous conidia were trapped, mainly in the ornamentations of segments cuticle. Dispersal of the pathogen via the larval feces was also demonstrated to be possible. Ingested pieces of conidiophores and condidia observed in the digestive tract remained typically shaped. The germination ability of conidia extracted from the gut was not modified, and B. cinerea remained viable inside feces. In vineyards near Bordeax, B. cinerea was isolated from 95 and 35% of the second generation larvae in 1987 and 1988, respectively. The factors that may be involved in the infection process are discussed.

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