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United States Department of Agriculture

Agricultural Research Service

Research Project: Sustainable Pest Management Strategies for Arid-land Crops

Location: Pest Management and Biocontrol Research

Title: Attraction of tomicus yunnanensis (coleoptera:scolytidae) to yunnan pine logs with and without periderm or phloem: an effective monitoring bait

Authors
item Lu, Rong -
item Wang, Hon -
item Zhang, Zhen -
item BYERS, JOHN
item Jin, You -
item Wen, Hai -
item Shi, W -

Submitted to: Psyche
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 31, 2011
Publication Date: January 13, 2012
Citation: Lu, R.C., Wang, H.B., Zhang, Z., Byers, J.A., Jin, Y.J., Wen, H.F., Shi, W.J. 2012. Attraction of tomicus yunnanensis (coleoptera: scolytidae) to yunnan pine logs with and without periderm or phloem: an effective monitoring bait. Psyche Vol. 2012, ID 794683, pp.1-5.

Interpretive Summary: The Yunnan pine shoot beetle, Tomicus yunnanensis Kirkendall and Faccoli (Coleoptera: Scolytidae) is an important pest of Yunnan pine (Pinus yunnanensis Franch) in China. Experiments with host log baits were done to develop a pest monitoring system using host tree volatiles (kairomones). Five Yunnan pine logs (each 30-cm long) in a trap-log bundle were treated by peeling periderm (outer bark) off to expose the phloem (food transport tissues), and half of each log was covered with sticky adhesive to capture any attracted adult beetles. Significantly more beetles were attracted and caught on the periderm-peeled logs (ca 30 beetles/m2 log surface/day) than on untreated control logs with adhesive (ca 2.5 beetles/m2/day). T. yunnanensis fly mostly during the afternoon according to trap catches throughout the day. Attraction to the periderm-peeled logs decreased considerably when they were peeled further to remove the phloem, indicating phloem volatiles play a role in selection of the host by the beetle. The log baits are easily prepared and readily available for use in monitoring pine shoot beetle populations in silvicultural and integrated pest management programs.

Technical Abstract: The Yunnan pine shoot beetle, Tomicus yunnanensis Kirkendall and Faccoli (Coleoptera: Scolytidae) is an important pest of Yunnan pine (Pinus yunnanensis Franch) in China. Experiments with host log baits were done to develop a pest monitoring system using host tree kairomone. Five Yunnan pine logs (each 30-cm long) in a trap-log bundle were treated by peeling periderm (outer bark) off to expose the phloem, and half of each log was covered with sticky adhesive to capture any attracted adult beetles. Significantly more beetles were attracted and caught on the periderm-peeled logs (ca 30 beetles/m2 log surface/day) than on untreated control logs with adhesive (ca 2.5/m2/day). No significant differences were observed between catches on logs taken from lower or upper halves of Yunnan pines. T. yunnanensis fly mostly during the afternoon according to trap catches throughout the day. Attraction to the periderm-peeled logs decreased considerably when they were peeled further to remove the phloem, indicating phloem volatiles play a role in selection of the host by the beetle. The readily-available log baits appear useful for monitoring pine shoot beetle populations in integrated pest management programs.

Last Modified: 7/25/2014
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