馬祖列島雌光螢族群分布調查

Population Distribution Survey of Rhagophthalmus species in Matsu Archipelago, Taiwan

馬祖列島分布著2種特有種雌光螢，北竿雌光螢（Rhagophthalmus beigansis）和東莒黃緣雌光螢（R. giallolateralus），但數量稀少且分布侷限。本研究調查並彙整2010至2019年資料，建立雌光螢數量變化及分布地點等基礎生態資訊。2種雌光螢發生期皆在3到5月。北竿雌光螢分布於北竿、大坵與高登，主要發生季為4月，東莒黃緣雌光螢分布於東莒與西莒，主要發生季為3月和4月。馬祖列島2種雌光螢的族群數量，大致呈現逐年減少趨勢，部分棲地因為工程開發而造成族群滅絕。本研究提供馬祖特有雌光螢生態資訊於推動設立雌光螢野生動物保護區參考，達成生物保育馬祖特有種雌光螢之目標。

Rhagophthalmus beigansis and R. giallolateralus are two endemic firefly species rarely found in Matzu Archipelago, Taiwan. This study surveyed the two firefly species in Matzu Archipelago during the period of 2010 to 2019 to establish their basic ecological information, including their locations and population dynamics. The adult occurrence time of the two fireflies were from March to May. The major occurrence time of R. beigansis was in April on Beigan, Daqiu and Gaodeng islands. The major occurrence time of R. giallolateralus was from March to April on Dongiu and Xiju islands. The results showed that population size of two fireflies has been decreasing year by year, and some habitats have undergone population extinction due to engineering development. This study provides ecological information of the two endemic fireflies and serves to promote the establishment of wildlife refuge in order to achieve biological conservation of Rhagophthalmus spp. in Matsu.