HomeInternational Rice Research Notesvol. 28 no. 1 (2003)

Trapping the Adult Whorl Maggot Hydrellia Philippina Ferino with Baits

T. Elaiya Bharathi | V. Kr. Sathiyanandam | P.m.m. David

Discipline: Agriculture, Management, Pest Science



The whorl maggot, Hydrellia philippina Ferino (Diptera: Ephydridae), attacks rice seedlings at transplanting (Reissig et al 1986). As the larva feeds on the tissues of unopened leaves, white or transparent patches become evident near the edges when they unfold. Pinholes on leaves, which break from the wind, are other symptoms of attack. The damaged plants remain stunted with a few tillers. Ephydrids cause a 10–20% yield loss in rice (Foote 1995). The adults are active during the day, with limited migration, and they are highly attracted to fishmeal bait (Reissig et al 1986). However, the strong odor of decomposing fishmeal is not acceptable to all human beings. Since behavioral approaches are key elements in integrated pest management (Foster and Harris 1997), we evaluated the attractiveness of two selected food attractant admixtures involving banana, soybean hydrolysate, vinegar, and palm oil.