瘤野螟處女蛾誘蟲器誘捕雄蟲試驗
Other Title
Catches of Male Rice Leaffolders with Virgin Females-baited Traps
Journal
植物保護學會會刊
Journal Volume
29
Journal Issue
4
Pages
371-384
ISBN
0577-750X
Date Issued
1987-12
Date
1987-10
Author(s)
鄭清煥
Ching-Huan Cheng
Abstract
於田間利用瘤野螟雌女蛾為誘蟲源進行誘捕雄蟲試驗，結果發現雄蟲對處女蛾誘蟲器具強烈反應。誘捕雄蟲效率與誘蟲源及捕蟲陷阱均具密切關連。捕蟲陷阱以使用直徑60cm以上之圓形水盤漆成黃色者效果最佳，其放置高度以與水稻株高相同者最優。誘蟲源之處女蛾以裝置於周圍開設紗窗之塑膠瓶（罐）(直徑約10cm，高12cm)，並以沾有10%蜜水之棉球供食滷濰持較長之壽命。處女蛾以羽化後第3~4天者誘引力最強，經交尾之雌蟲對雄蟲亦有誘引力，但略較處女蛾為差。每誘蟲器使用8~10隻處女蛾誘捕雄蟲數為使用2~4隻者之2至18倍。誘蟲器之捕獲雄蟲時間主要出現於下半夜，但其開始誘捕到雄蟲的時刻及誘捕高舉之出現時間隨溫度之下降而提早。最低可誘到雄蟲之溫度約在13℃左右。以五隻處女蛾為誘蟲源之誘捕雄蟲有效距離在5m範圍以內。比較吸式誘蟲燈與處女蛾誘蟲器偵測瘤野螟成蟲田間族群初步結果，顯示在田間族群密度較低時以吸式誘蟲燈較佳，但在其族群密度較高時則雌女蛾誘蟲器捕獲蟲數較多。
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.
Subjects
瘤野螟
處女蛾誘蟲器
Rice leaffolder
virgin females-baited trap
Publisher
植病保護學會
Type
journal article
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