Jeffrey pine trees killed by the Jeffrey Pine Beetle – Little Valley, Near Reno, NV 1998.

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Presentation transcript:

Jeffrey pine trees killed by the Jeffrey Pine Beetle – Little Valley, Near Reno, NV 1998

Mark McGregor, USDA Forest Service Pitch tubes: Jeffrey pine beetle attacking Jeffrey pine tree

Pine engraver beetle, Ips pini Colonizing Jeffrey pine log

JH treated male D. jeffreyi antisense probe to HMG-R cropVentriculus (midgut) rectum Hall Pheromone production occurs In midgut of bark beetles

Pheromone-Biosynthetic Gene Expression Profiles: Induced by feeding or JH treatment AACT HMG-S HMG-R MK MPDC IPPI GPPS FPPS log 2 (Relative Expression) (+SE) Basal expression levels higher in males than females Localized to anterior midgut