馬祖列島斑腿樹蛙（Polypedates megacephalus Hallowell, 1861）地理分布現況

馬祖地區的斑腿樹蛙（Polypedates megacephalus Hallowell, 1861）於2007年在南竿島始有記錄，但之後並無詳細分布調查資料，且是否為外來種仍有待證實。本研究於 2018-2019年針對連江縣4鄉5島，包含南竿島、北竿島、東引島、東莒島和西莒島進行斑腿樹蛙分布調查。結果顯示，斑腿樹蛙僅分布於南竿島與北竿島，其他島嶼並未分布。根據過去的調查資料，馬祖列島早期並無斑腿樹蛙紀錄，南竿島2007年先有紀錄，隨後才在北竿島發現，推測可能為外來種。未來應研究斑腿樹蛙的起源，並持續監測斑腿樹蛙在馬祖地區的地理分布範圍與數量，以評估其對當地生態的潛在影響，提供未來是否需移除之參考。

關鍵字

連江縣；斑腿樹蛙；外來種；入侵種

並列摘要

Polypedates megacephalus Hallowell, 1861 has not been recorded in the Matsu Archipelago before 2007, and the first distribution record of this species was on Nangan island in 2007. To our knowledge, the detailed distribution of P. megacephalus in the Matsu Archipelago has not been surveyed, and whether it is an alien species for Matsu Archipelago or not has yet to be confirmed. This study aims to survey the geographic distribution of P. megacephalus during 2018-2019 in five islands (Nangan island, Beigan island, Dongyin island, Dongju island, and Xiju island) of Matsu Archipelago. Results showed that P. megacephalus is only distributed on Nangan island and Beigan island. Based on the historical literature review and distribution pattern, we suggest that P. megacephalus is perhaps an alien species in the Matsu Archipelago. Further study on the origin, continuous monitoring of the geographic distribution, and population size of P. megacephalus is necessary for evaluating its potential impacts on local ecology and whether it should be removed in the future.