以數位錄影系統探討臺灣窗螢幼蟲化蛹與羽化過程

Using a Digital Video System to Study Pupation andEmergence of the Firefly Pyrocoelia analis (Febricius)

本研究自行規劃組裝之數位錄影系統，包括電腦系統主機與影像擷取卡、40G硬碟、12倍速光碟燒錄機、高畫質監視器CCD、紅外線燈源、影像作業軟體與相關周邊設備。本系統與錄影帶錄影系統和DV攝影系統相較下，其功能、資料管理、速度與可擴充性皆較佳，能夠有效地在夜間工作，適合作為夜行性螢火蟲活動的監視與記錄系統。在化蛹與羽化之發生頻度呈逢機分布，雌蟲化蛹平均所需時間58.37±26.89 min，而雄蟲為64.50±47.96 min。雌蟲羽化平均所需時間101.66±52.60 min，而雄蟲為85.04±57.96 min，兩者在雌雄之間無顯著差異（t-test, p > 0.05）。 We set up a digital video system that connected to the main system of personal computer with animage card, a 40G hard disk, a 12X CDR, and a high quality CCD. It was provided with infrared light asits illumination source. This system was found to be better than the video system and the digital videocamera system in functional quality and efficiencies, such as image view, storage, transfer and extension,and data collection and management. The digital video system is a useful monitoring system particularlysuitable for studies on activities of nocturnal fireflies. In this study the digital video system was tested tomonitor the pupation and emergence of the firefly Pyrocoelia analis Fabricius. The results showed thatoccurrence of the pupation and emergency during 24 hours of the day were the random phenomenawithout a peak occurrence. The time duration for the pupation was 58.37 26.89 min for females and64.50 47.96 min for males, while for the emergence was 101.66 52.60 min for females, and 85.0457.96 min for males. However, there was no sexual significant difference in these two characters (t-test, p> 0.05).