Detection of Male Mediterranean Fruit Flies (Diptera: Tephritidae): Performance of Trimedlure Relative to Capilure and Enriched Ginger Root Oil
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2013
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Hawaiian Entomological Society
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Females of the Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann), oviposit in a large number of fruits and vegetables and pose an enormous threat to agriculture worldwide. As a result, areas free of C. capitata often operate trapping programs to detect incipient infestations. Detection efforts rely heavily on trimedlure (TML), a male-specific attractant. Despite its wide acceptance, TML is not a particularly powerful attractant, and alternatives are being investigated. Capilure® (CPL), which contains TML plus extenders to reduce production costs and volatility, and enriched ginger root oil (EGRO), which contains the male attractant α-copaene, have been compared with TML with varying results. The present study provides additional field data comparing the effectiveness of TML against CPL or EGRO as trap baits for wild C. ceratitis males in a Hawaiian cof- fee field. While traps baited with fresh TML or CPL generally captured similar numbers of male medflies, TML-baited traps generally captured significantly more male medflies than CPL-baited traps when the lures were aged 1, 3, 8, or 10 weeks. Likewise, traps baited with fresh TML or EGRO captured equal numbers of males, whereas significantly more males were captured in TML- than EGRO- baited when the lures were aged 3 or 6 weeks. Based on these results, neither CPL nor EGRO appears an adequate substitute for TML.
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Proc Hawaiian Entomological Society (2013) 45:1–7
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