Submitted to: Entomology Society of America Pacific Branch Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 2/5/2007
Publication Date: 3/13/2007
Citation: Yokoyama, V.Y., Rendon, P. 2007. Biological control of olive fruit fly by 2006 parasitoid releases of Psyttalia cf. concolor imported from Guatemala. Entomology Society of America Pacific Branch Meeting. p. 125-126.
Technical Abstract: The larval parasitoid, Psyttalia cf. concolor, was reared on Mediterranean fruit fly, Ceratitis capitata Weidemann, in Guatemala and imported into California for biological control of olive fruit fly, Bactrocera oleae (Gmelin), in olives, Olea europaea L. Releases of parasitoid adults in 2006 were conducted in Orland, San Juan Bautista, Cayucos, Sylmar, Santa Barbara, and San Diego. Adults (3,613-8,322) were released 1-4 times during October through December at each site. The estimated number of olive fruit fly 3rd instars per fruit that were exposed to parasitoids at each site ranged from <1 in Orland to 1.3 in San Diego. The number of olive fruit fly adults trapped per day per yellow panel trap with pheromone lures and ammonium bicarbonate baits ranged from 0.4 in Orland to 28.6 in San Juan Bautista. The F1 progeny of released adults were collected in fruit samples from every location and the rate of parasitism ranged from 5.6 ± 5.6 in Orland to 96.0 ± 20.8 in Cayucos. The parasitoid shows great potential for establishment for biological control of olive fruit fly.