PROIMI   05436
PLANTA PILOTO DE PROCESOS INDUSTRIALES MICROBIOLOGICOS
Unidad Ejecutora - UE
artículos
Título:
A survey of hymenopterous larval-pupal parasitoids associated with Anastrepha fraterculus and Ceratitis capitata (Diptera: Tephritidae) infesting wild guava (Psidium guajava) and peach (Prunus persica) in the southernmost section of the bolivian Yungas fo
Autor/es:
OVRUSKI, SERGIO M; P. SCHLISERMAN; S. R. NUÑÉZ-CAMPERO; L. E. OROÑO; L. P. BEZDJIAN; P. ALBORNOZ-MEDINA; G. A. VAN NIEUWENHOVE
Revista:
FLORIDA ENTOMOLOGIST
Editorial:
FLORIDA ENTOMOLOGICAL SOC
Referencias:
Año: 2009 vol. 92 p. 269 - 275
ISSN:
0015-4040
Resumen:
The results of an Anastrepha fraterculus (Wiedemann) and Ceratitis capitata (Wiedemann) parasitoid survey in which wild guava (Psidium guajava L.) and peach (Prunus persica (L.) Batsch) fruits were systematically sampled in an area of the southernmost extension of the Bolivian Yungas forest, in the Province of Tarija, are reported here. The study was carried out in December, and between February and March (summer) 1999 and 2000 with the purpose of identifying indigenous parasitoid species and determining relative abundance and variations in parasitoid and fly numbers over time, natural parasitization rates and fruit infestation levels, and parasitoid distribution patterns. A total of 1,600 guavas and 800 peaches, weighing 57.713 kg and 24.544 kg respectively, were processed. From these fruits, 13,080 tephritid puparia were obtained, 78.4% of which were A. fraterculus and 21.6% Ceratitis capitata (Wiedemann). Out of 5,718 adult insects that emerged from these puparia, 3,925 were A. fraterculus, 1,081  C. capitata, and 712 larval-pupal parasitoids, representing eight species of two Hymenoptera families: Doryctobracon areolatus (Szépligeti), D. brasiliensis (Szépligeti), D. crawfordi (Viereck), Opius bellus Gahan Utetes anastrephae (Viereck) (all Braconidae, Opiinae), Aganaspis pelleranoi (Brèthes) Odontosema anastrephae Borgmeier, and Lopheucoila anastrephae (Rohwer) (all Figitidae, Eucoilinae). Utetes  anastrephae, O. anastrephae, and L. anastrephae are new fruit fly parasitoid reports for Bolivia, apart from being the first evidence of   O. anastrephae in the South American Yungas forest.  Ceratitis capitata was only parasitized by A. pelleranoi. Doryctobracon areolatus, A. pelleranoi, D. brasiliensis, and U. anastrephae were the four most commonly recovered parasitoid species from guava and peach. Fruit infestation and parasitization rates by/on A. fraterculus increased from December to March, whereas the fruit infestation and parasitization rates by/on C. capitata decreased from December to March. Approximately 84% of all eucoiline parasitoid specimens were recovered from fruit samples collected from the ground.   The abundance patterns and diversity of fruit fly larval-pupal parasitoid species found in this study were similar to the previously published data for the southern and northern Yungas forests of Argentina. However, a thorough sampling of other C. capitata and Anastrepha host plants, mostly native fruit species, will be necessary in the Yungas forest of Bolivia before further conclusions on abundance and composition of fruit fly parasitoids can be reached.