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Tydeus caudatus (Acari: Tydeidae) can prey upon grape eriophyoid mites but little is known about its alternative foods. Observations carried out during 1999–2003 in a commercial vineyard located in northeastern Italy showed that densities of T. caudatus were often correlated to downy mildew spread on the vegetation. Densities of T. caudatus increased in late summer when downy mildew symptoms occurred...
Mite populations, in particular those belonging to the Phytoseiidae family were monitored in a commercial vineyard comprising two varieties (Prosecco and Pinot gris). On Prosecco, densities of Amblyseius andersoni, and to a lesser extent of Typhlodromus pyri increased when downy mildew symptoms occurred on a high number of leaves. On Pinot, A. andersoni was the dominant species and its densities markedly...
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