SYNTHETIC JUVENILE HORMONE - INDUCTION OF SEX PHEROMONE PRODUCTION IN IPS CONFUSUS

Topical application of 25, 50, or 100 micrograms of 10,11-epoxyfarnesenic acid methyl ester in peanut oil induced male Ips confusus to produce sex pheromone in the hindgut Malpighian tubule region. Twenty-four hours after treatment of male beetles with 100 micrograms of hormone, their hindgut Malpighian tubule extract was-more attractive to female beetles in a laboratory bioassay than was extract from males producing pheromone naturally in ponderosa pine logs.