| Summary: | 碩士 === 國立中興大學 === 昆蟲學系所 === 106 === The melon fly, Zeugodacus cucurbitae (Coquillett), is an invasive pest of Cucurbitaceous crops worldwide. Currently, cuelure mixed with methyl eugenol and naled is one of the main field management tactics in Taiwan. However, naled is a highly toxic agent to mammal and is prohibited to use for organic agriculture production. The objective of this study is to evaluate a non-toxic trap as an alternative for organic agriculture and reducing the use of organophosphate. The efficacy of anti-escape design and non-toxic trap with cuelure was tested in green house condition and field test. The result showed that the relative capture rates of anti-escape trap was significantly higher than the trap without anti-escape design in green house condition. Data from greenhouse and field trails show the relative capture rates of non-toxic trap with cuelure was higher than cuelure mixed with naled, but not stastically different. The effect of adding torula yeast solution to cuelure in non-toxic trap was evaluated in green house condition and field test. The result demonstrated that attraction of male flies increased significantly, but the number of female flies entered torula yeast solution baited non-toxic traps was not affected by the presence of cuelure. Sexually mature male flies were attracted by cuelure and immature male flies were attracted by McPhail trap baited with torula yeast. In contrary, female flies both sexually mature and immature were both significantly more attracted to torula yeast solution in McPhail trap with torula yeast than in Non-toxic traps. To evaluate the effect of color cue on the response of melon fly to the non-toxic traps, the response of male and female melon flies to yellow non-toxic traps were evaluated in green house condition. The result showed adding yellow color as visual cue increased the attraction of male significantly, but it did not increase the response of female. Field evaluation also showed that the attraction of male was increased significantly to non-toxic traps with yellow visual cue. In contrary, female did not respond to the visual cue on non-toxic trap. Based on the above results, the non-toxic trap is suitable to be used with non-toxic attractant, and can attract male melon fly effectively, be a male annihilation program.
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