Capture of Oriental Fruit Flies (Diptera: Tephritidae) by Protein-Baited Traps and Fruit-mimicking Visual Traps in a Guava Orchard

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Abstract:

Experiments were conducted to compare the effectiveness of 2 commercially available traps, the protein-baited McPhail trap and the fruit-mimicking Ladd trap, for capturing oriental fruit flies, Bactrocera dorsalis Hendel, in a commercial guava orchard. The relative attractiveness of McPhail and Ladd traps changed over seasons. In the winter of 1996, Ladd traps captured more females than McPhail traps. In the spring of 1997, McPhail traps captured >4 times as many females as Ladd traps. In the summer, fall, and winter of 1997, equal numbers of females were captured on Ladd and McPhail traps, and in the spring of 1998, McPhail traps captured >10 times as many females as Ladd traps. Ovaries of female fruit flies captured in these 2 traps were dissected and examined for the presence of mature eggs. Greater numbers of immature females were captured in McPhail traps than on Ladd traps in both 1997 and 1998. In 1997, the proportion of immature versus mature females captured in both trap types changed over seasons, with the greatest proportion of immature females being captured in the spring. We conclude that McPhail traps are a better option for growers than Ladd traps, especially in the spring when the proportion of protein-hungry flies may be greater.

Keywords: Bactrocera dorsalis; olfactory stimuli; pest sampling; protein; visual stimuli

Document Type: Research Article

Publication date: December 1, 1999

More about this publication?
  • Environmental Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment and is divided into the following sections: physiological ecology; chemical ecology; population ecology; quantitative ecology; community and ecosystem ecology; biological control--parasitoids and predators; biological control--microbials; biological control--weeds; behavior; pest management; sampling; plant-insect interactions; molecular ecology and evolution; transgenic plants and insects. In addition to research papers, Environmental Entomology publishes Letters to the Editor, interpretive articles in a Forum section, and Book Reviews.
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