Plant-mediated interactions among gall forming insects
Russian knapweed (Rhaponticum (=Acroptilon) repens (L.) Hidalgo) is one of the most troubling exotic weeds throughout the western United States invading many public and private lands. A classical biological control agents, the gall midge (Jaapiella ivannikovi Fedotova), is a parasite on Russian knapweed, forming galls on the plant, inside which J. ivannikovi broods feed and develop. This system provides an opportunity to consider plant-mediated interactions between midge individuals and considered the merits of integrating other weed management techniques (grazing, mowing, and chemical control ...
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