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Universidade de Sao Paolo (2002)

Dípteros frugívoros (Tephritidae e Lonchaeidae) na região de Mossoró/Assu, Estado do Rio Grande do Norte

Araujo, Elton Lucio de

Titre : Dípteros frugívoros (Tephritidae e Lonchaeidae) na região de Mossoró/Assu, Estado do Rio Grande do Norte

Auteur : Araujo, Elton Lucio de

Université de soutenance : Universidade de Sao Paolo

Grade : Tese de Doutorado 2002

Résumé
The Mossoró/Assu region (RN), located in a semi-arid zone, is important as a center of fruit production and export, especially melons, Cucumis melo, and, mangoes, Mangifera indica. Thus, the objective of the present study was to investigate several aspects related to fruit flies (Dip. ; Tephritidae) and lonchaeids (Dip. ; Lonchaeidae) in this region. After two years of collection with McPhail traps and reared from fruits, ten tephritid species and a single lonchaeid species, Neosilba pendula (Bezzi), were detected. The most common fruit flies were Anastrepha zenildae Zucchi, A. obliqua (Mcquart), and Ceratitis capitata (Wied.). The highest infestation levels were observed on ’juá’ fruits, Ziziphus joazeiro (Rhamnaceae) and on kumquats, Fortunella sp. (Rutaceae). In some months of the year, A. zenildae was considered as a pest in guava, Psidium guajava (Myrtaceae), orchards. Adult population, host availability, rainfall and temperature were the factors that most influenced the levels of guava fruit infestation by Anastrepha species. Neosilba pendula showed low infestation levels on fruit trees of region, but was considered as an important primary invader of "acerola", Malpighia emarginata (Malpighiaceae). Three parasitoid species (Braconidae) were obtained from fruit fly puparia, the most common being Doryctobracon areolatus (Szépligeti).

Mots clés : agricultural Entomology fruit flies harmful insects pomiculture

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