Submitted to: Meeting Abstract
Publication Type:
Abstract
Publication Acceptance Date: February 24, 2005
Publication Date: March 7, 2005
Citation: Yokoyama, V.Y. 2005. Potential of p. cf. concolor from moscamed, guatemala for biological control of olive fruit fly in california. Exotic Fruit Fly Symposium, March 7-9, 2005, Riverside, California.
Technical Abstract: A parasitoid, Psytallia cf. concolor, imported from Moscamed, Guatemala and originally collected from Mediterranean fruit fly, Ceratitis capitata (Wiedemann), on coffee in Kenya, caused 100% mortality of olive fruit fly, Bactrocera oleae (Gmelin), larvae in field cage tests and 10% parasitism of larvae in small field releases. Longevity of P. cf. concolor and olive fruit fly adults when exposed to 24ºC and 65% RH resulted in 17-66 d and 53-202 d with food and water, and 4-15 d and 5-12 d without food and water; and when exposed to 35ºC and 30% RH resulted in 3-7 d and 1-11 d with food and water, and 1 d and 2-3 d without food and water, respectively, in greenhouse cage tests. A tephritid, Chaetorellia succinea, a biological control agent of yellow star thistle was not parasitized by P. cf. concolor in laboratory cage tests (2,048 thistle bud florets, and 1,073 tephritid larvae in 9 replicates). Exposure of low numbers of walnut husk fly, Rhagoletis completa Cresson, larvae to P. cf. concolor resulted in approximately 33% parasitism. The larval parasitoid P. cf. concolor has potential to control olive fruit fly in California.
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