Tests of Eight Rearing Media for the Mountain Pine Beetle, Dendroctonus ponderosae (Coleoptera: Scolytidae), from Lodgepole Pine1

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Abstract
Eight rearing media were tested for suitability for rearing the mountain pine beetle, Dendrocotonus ponderosae Hopkins, from lodgepole pine, Pinus contorta Douglas. The 2 media containing cellulose rather than lodgepole phloem were not successful. Two phloem-based media produced adults from 36.7 and 21.4% of the lststage larvae applied to them. Development time of the insects, size and condition of the adults, and ability of the adults to produce viable eggs when artificially infested in lodgepole pine log sections were studied. Wild adults mated on most media. Eggs were laid on 4 phloem-containing media but only 1 proved viable.
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