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Parasitoid Complex of the Gypsy Moth (Lymantria dispar) in the Increase-phase Populations in Korea

Keywords: Gypsy moth , Increase-phase population , Natural enemies , NPV , Parasitism

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The species composition of the parasitoid complex and the degree of parasitism by each specieswere analyzed for gypsy moth (Lymantria dispar) populations in the increasing phase. Total of 7,826 mid-lateinstar larvae and pupae were collected and reared from two collection sites in Gangwon Province, Korea. Twotachinid flies (Blepharipa schineri and Parasetigena silvestris), and the ichneumonid wasp (Coccygomimusdisparis) were the most abundant parasitoids, in the order of decreasing importance. Other parasitoids occurringincluded Coteisa melanoscelus, Cotesia scheaferi, Glyptapanteles liparidis, Brachymeria lasus, and Exorista spp.The low incidence of the NPVirus is hypothesized to be an important factor in determining degree of parasitismrate by P. silvestris and B. schineri, and their relative dominance in the parasitoid complex.


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