Tritrophic Interactions Among Fruit Flies (Diptera: Tephritidae), Its Parasitoids and Cultivated and Wild Hosts in the Pampa Biome, Rio Grande do Sul, Brazil

Emily S. Araujo (), Alexandra P. Krüger, Maria V. Calvo, Marcos H. F. Telles, Alexandre M. Neumann, Iris B. Scatoni, Valmir A. Costa, Dori E. Nava, José M. Mirás-Avalos () and Flávio R. M. Garcia
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Emily S. Araujo: Departamento de Ecologia, Zoologia e Genética, Instituto Biológico, Universidade Federal de Pelotas, Pelotas 96010-900, RS, Brazil
Alexandra P. Krüger: Departamento de Ecologia, Zoologia e Genética, Instituto Biológico, Universidade Federal de Pelotas, Pelotas 96010-900, RS, Brazil
Maria V. Calvo: Departamento de Protección Vegetal, Facultad de Agronomía, Universidad de la República de Uruguay, Montevideo 12900, Uruguay
Marcos H. F. Telles: Departamento de Ecologia, Zoologia e Genética, Instituto Biológico, Universidade Federal de Pelotas, Pelotas 96010-900, RS, Brazil
Alexandre M. Neumann: Departamento de Ecologia, Zoologia e Genética, Instituto Biológico, Universidade Federal de Pelotas, Pelotas 96010-900, RS, Brazil
Iris B. Scatoni: Departamento de Protección Vegetal, Facultad de Agronomía, Universidad de la República de Uruguay, Montevideo 12900, Uruguay
Valmir A. Costa: Centro Avançado de Pesquisa e Desenvolvimento em Sanidade Agropecuária, Instituto Biológico, Campinas 13086-900, SP, Brazil
Dori E. Nava: Embrapa Clima Temperado, Pelotas 70770-901, RS, Brazil
José M. Mirás-Avalos: Misión Biológica de Galicia del Consejo Superior de Investigaciones Científicas (MBG-CSIC), Sede Santiago de Compostela, Avda. de Vigo s/n, 15705 Santiago de Compostela, Spain
Flávio R. M. Garcia: Departamento de Ecologia, Zoologia e Genética, Instituto Biológico, Universidade Federal de Pelotas, Pelotas 96010-900, RS, Brazil

Agriculture, 2025, vol. 15, issue 19, 1-17

Abstract: Fruit fly (Diptera: Tephritidae) species are a serious threat for fruit-growers worldwide. The parasitoids (Hymenoptera) are natural enemies of these flies. In this context, the aim of this work was to assess fruit infestation by tephritid flies, both in native and exotic fruit trees, in the Southern region of Rio Grande do Sul (Brazil). Moreover, the incidence of native parasitoids on fly larvae was estimated. Fruits with signals of attack by fruit flies were collected randomly both in the trees and on the ground. From 2013 to 2015, a total of 5729 fruits (194.48 kg) were collected, corresponding to 34 tree species from 16 botanical families. Fruits were taken to the laboratory, individualized, weighted and kept in vermiculite for pupae emergence. Pupae were counted and emerged adults were counted and identified. The association between fruit flies, hosts and parasitoids was determined when only a given species of tephritid emerged. Half of the sampled fruit tree species presented infestation by flies. The main species of tephritid fly was Anastrepha fraterculus . This study showed that natural parasitism rates of fruit flies were low; however, several parasitoid species from the Figitidae and Braconidae families were detected, including Aganaspis pelleranoi , Doryctobracon areolatus , Doryctobracon brasiliensis , Opius bellus , Utetes anastrephae , and Cerchysiella insularis .

Keywords: Anastrepha fraterculus; ecosystem services; Hymenoptera; natural parasitism (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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