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

Published byMargaret Glenn Modified over 9 years ago

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Presentation on theme: "Jeffrey pine trees killed by the Jeffrey Pine Beetle – Little Valley, Near Reno, NV 1998."— Presentation transcript:

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

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

3 Pine engraver beetle, Ips pini Colonizing Jeffrey pine log

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

6 Pheromone-Biosynthetic Gene Expression Profiles: Induced by feeding or JH treatment -2 0 1 2 3 4 5 6 7 8 9 10 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

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