|Title:||瘤對螟處女蛾誘蟲器誘捕雄蟲試驗||Other Titles:||Catches of Male Rice Leaffolders with Virgin Females-baited Traps||Authors:||鄭清煥
|Keywords:||瘤野螟;處女蛾誘蟲器;Rice leaffolder;virgin females-baited trap||Issue Date:||Dec-1987||Publisher:||植病保護學會||Journal Volume:||29||Journal Issue:||4||Start page/Pages:||371-384||Source:||植物保護學會會刊||Abstract:||
Methods for trapping males of rice leaf folder, Cnapharocrocis, nedinalis, with virgin females-baited traps were studied in paddy fields. . Trapping effeciency was observed to be closely related to both the source of attractant and the trap designs. Among five different traps tested, the trap of a circular yellow water-pan (more than 60 cm in diameter) was most effective in capturing the male moths. Traps placed at height of 70 cm, near the tops of rice plant, had caught more males than those placed 30 cm either higher or lower the plants. The virgin females being confined in a windowed plastic can and fed with 10% honey-solution had a longer life-span than those caged in a small net bag. Three to four days old virgin females were more attractive. The trap baited with mated females also attracted male moths, but it caught only a half number of males as compared with that of the virgin females. The traps baited with 8 to 10 virgin females caught 2 to 18 times more males than the traps baited with 2 or 4 females. The male moths were caught in the trap from midnight to about 4 AM. The capture occured about one hour earlier when the ambient temperature declihed in late autumn. The trap remained having its fuction of male catch as the temperature declined to about 13℃. Effective distance for the trap baited with 5 virgin females was measured to be within a distance of 5 meters. As seasonal occurrence of the rice leaffolder was monitored with the virgin females-baited trap in comparison with a suction light trap (fluorecents-10W), the virgin females-baited trap seemed to be more effective when the adult population in the fields was high in autumn, but was not as effective as the suction light trap during low adult population period in spring and summer seasons.
|Appears in Collections:||植物保護系|
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