Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Protection of a rare stand of Torrey pine from Ips paraconfusus.

Abstract

Ips paraconfusus was identified as the primary agent of high mortality of Torrey pine (Pinus torreyana) during 1989-92 in Torrey Pine State Reserve, California. After considering several intervention options (including insecticides, limited salvage logging and watering), both aggregation and antiaggregation pheromones of I. paraconfusus were deployed throughout the Reserve in Lindgren funnel traps. Subjective evaluation of the project (there were no untreated controls) indicated that the pheromone traps virtually eliminated mortality caused by I. paraconfusus.