Trophic interactions in the plant-pest-natural enemy relationship, case study: Anastrepha spp. and five host fruits

• DOI: https://doi.org/10.22533/at.ed.973572529108

• Palavras-chave: Anastrepha spp, backyard, hosts, parasitoids

• Keywords: Anastrepha spp, backyard, hosts, parasitoids

• Abstract:

  The objective of this study was to investigate the trophic interaction of Anastrepha and Schiner species (Diptera: Tephritidae) in backyards in the southeastern part of the state of Campeche, Mexico. Five fruit species were sampled: Citrus aurantium L. 1753 (Rutaceae), Citrus sinensis, Osbeck, (Rutaceae), Psidium guajava L. (Myrtaceae), Talissia olivaeformis H.B.K. (Sapindaceae), and Zuelannia guidonea (Sw.) Britton and Millsp (Flacourtiaceae), infested with larvae of Anastrepha spp. The fruits were transported to the entomology laboratory of the Faculty of Agricultural Sciences of the Autonomous University of Campeche, where they were dissected and third-instar larvae were extracted. The flies obtained were identified as: A. ludens (Loew) 1873, A. obliqua (Macquart) 1835, A. striata (Schiner) 1868, A. fraterculus (Wiedemann) 1830, and A. zuelaniae (Stone) 1942. The average larval infestation rates per kg of fruit ranged from 126 to 4783. Five genera of parasitoids were identified: Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae), Doryctobracon areolatus (Szépligeti), 1911 (Hymenoptera: Braconidae), Aganaspis pelleranoi (Bréthes), (Hymenoptera: Figitidae), Opius bellus (Gaham) 1930, (Hymenoptera: Braconidae), Odontosema spp. and Odontosema anastrephae (Hymenoptera: Figitidae) (Borgmeier), 1935. Parasitism rates fluctuated on average between 3.0 and 18.2%.