USDA Forest Service
 

Pacific Southwest Research Station

 

Pacific Southwest Research Station
800 Buchanan Street
West Annex Building
Albany, CA 94710-0011

(510) 559-6300

United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Publications and Products

Order a printed copy
of this publication.

Research Note

Title: Trapping western pine beetles with baited toxic trees

Author: Smith, Richard H.

Date: 1985

Source: Res. Note PSW-RN-382. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture. 9 p

Station ID: RN-PSW-382

Description: Baited toxic trap trees—trunks of living trees sprayed with an insecticide and then baited with an attractive substance—were tested in California to kill western pine beetles attacking ponderosa pine. The attractant was the triplet pheromone mixture of brevicomin, frontalin, and myrcene. Insecticides were lindane, Sevin, permethrin, and deltamethrin. All insecticides were effective at certain concentrations in killing beetles at the baited tree. Adjacent nonbaited trees were often attacked, but such trees were effectively protected with both preattack and postattack sprays. Numbers of beetles killed at active baited toxic trap trees for a full season varied widely between localities, years, and treatments, ranging from about 100 to over 550 per square foot (0.093 m²) of bark surface. Sex ratio of killed beetles was about 1:1, and no unusual effects of treatments on predators and other insects were noted. There was some indication that trapping may have reduced subsequent beetle activity in the area. Comparative studies with mountain and Jeffrey pine beetle suggest that the insecticides are probably effective against them but that the currently recommended attractants are not.

Key Words: ponderosa pine, pheromones, trap tree, lindane, Sevin, deltamethrin, permethrin

View and Print this Publication (906 KB)

Citation

Smith, Richard H.  1985.  Trapping western pine beetles baited toxic trees  Res. Note PSW-RN-382. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture. 9 p.

Last Modified: Nov 18, 2013 12:44:40 PM