Research Reports: Population Fluctuations of Economic Species of Anastrepha (Diptera: Tephritidae) Related to Mango Fruiting Phenology in Costa Rica

Luis Fernando Jiron, Ingemar Hedstrom

Abstract


Fruit flies were systematically trapped in 4 localities in Costa Rica during 15 consecutive months using McPhail traps, with Torula yeast plus borax as attractant. Observations were made every two weeks and population fluctuations were evaluated with respect to the phenology of mango trees in the vicinity. A total of 10,446 fruit flies were collected: 97.6% Anastrepha spp. Schiner, 2.0% Ceratitis capitata (Wiedemann), and 0.4% Toxotrypana curvicauda Gerstaecker. A. obliqua (Macquart) was the species most closely associated with mango, Mangifera indica L.; A. striata Schiner with guava Psidium guajava L., and other Myrtaceae; A. serpentina (Wiedemann) with various species of Sapotaceae. Fruit fly species in which the biology is unknown were also collected. In general, the species of Anastrepha showed highest densities during periods of abundant mature fruit of their respective hosts.

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