Seasonal Abundance of Anastrepha fraterculs, Ceratitis capitata (Diptera: Tephritidae) and Their hymenopterous parasitoids in the south area of the yungas forest of Northwest Argentina.

OVRUSKI, S. M. Y P., SCHLISERMAN

Mendoza - Argentina

Otro; 4th Meeting of the Working Group on Fruit Flies of the Western Hemisphere; 2001

Working Group on Fruit Flies of the Western Hemisphere

  The mediterranean fruit fly, Ceratitis capitata Wied and the south American fruit fly, Anastrepha fraterculs(Wied.) and thir associated parasitoids were monitored on one exotic, wild host plants species grown in the Yungas forest of Tucumán province, northwest Argentina, from december 1999 to june 2000. The fruit fly host plants collected were Psidium guajava L. (guava) (Myrtaceae) and Prunus persica Stokes (peach) (Rosaceae). They were the most prevalent hosts infested with both  A. fraterculs and C. capitata. Mature fruits were picked both from trees and from ground below and placed in plastic  cages containing humid sand at botton. Puparia were sifted and counted weeckly. The emerged tephritids and parasitoids were placed in labeled glass tlasks filled with 70 % alconol. We identified five native larval-pupal parasitoid species (all Hymeoptera):Doryctobracon areolatus (Szepligeti), D. brasiliensis (Szepligeti), Opius bellus Gahan, Utetes anastrephae (Viereck) (all Braconidae, Opiinae) and Aganaspis pelleranoi (Brethes) (Figitidae, Eucoilinae) All Opiinae species were recovered from A. fraterculus puparia while A. pelleranoi was recovered from both C. capitata and A. fraterculus. A. fraterculus was predominant in both host fruit and the greater peak of parazitation occurred peach fruit.