Abstract
Four weevil species, Argentine stem weevil, sitona weevil, Niceana cervina, and Irenimus stolidus, as well as the grey field slug and grass grub larvae were investigated as potential vectors of plant viruses. None of the invertebrates were shown to transmit any of the viruses tested. In addition, the influence of ryegrass mosaic virus and cocksfoot mottle virus on Argentine stem weevil feeding and oviposition was investigated. Argentine stem weevil feeding was not affected by the presence of ryegrass mosaic virus but was reduced by cocksfoot mottle virus. Neither virus appeared to influence oviposition during the study period. The feeding preferences of sitona weevils presented with alfalfa mosaic virus infected or uninfected lucerne were also investigated but no preference was observed.
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