
文大生科系教授陳怡惠、副教授巫奇勳攜手日本團隊,運用全基因組分析比較台灣與琉球群島艾氏樹蛙,揭示島嶼生物族群分化與遺傳特徵。
文化大學與日本琉球大學、京都大學及國立科學博物館組成研究團隊,透過全基因組分析比較台灣與日本石垣島、西表島的艾氏樹蛙族群,發現族群保有各自遺傳特徵,成果近日獲國際期刊「Zoological Studies」刊登。
AI-generated summary
文化大學生命科學系與日本琉球大學自2013年起推動生物相關國際聯合課程,並於2018年簽署姊妹校合作。
文化大學生命科學系教授陳怡惠、副教授巫奇勳與日本琉球大學、京都大學及日本國立科學博物館組成研究團隊,從艾氏樹蛙族群遺傳研究切入,運用全基因組分析比較台灣、石垣島及西表島族群,研究顯示,即使冰河時期海平面下降、島嶼可能曾因陸橋產生接觸,族群仍保有各自的遺傳特徵。成果為進一步理解島嶼多元物種的演化與族群分化提供重要研究基礎,近日獲國際期刊「Zoological Studies」刊登。
這項研究從最初討論至成果發表歷時近4年,研究團隊結合台灣與日本的野外調查及基因分析,發現石垣島、西表島、台灣北部及台灣中部族群各自形成主要遺傳群,顯示同一物種在不同島嶼長期演化後,已累積各自的遺傳特徵。研究成果也為理解島嶼生物如何受到地理隔離、環境條件及自身生態特性共同影響,形成不同遺傳特徵,提供新的研究資料。
其中,石垣島與西表島族群在演化早期即已產生分化。研究推測,更新世冰期海平面下降期間,兩島可能因陸橋再次產生接觸,族群之間也曾發生少量基因交流,但遺傳差異並未因此消失。研究結果顯示,島嶼生物的族群分化除了受到地理隔離影響,棲息環境及物種本身的生態特性,也可能影響不同族群之間的基因交流。
陳怡惠與巫奇勳指出,台灣與日本琉球群島的艾氏樹蛙雖屬同一物種,但從全基因組資料可以看見不同地區族群的演化歷程。相較於僅從地理分布或部分基因觀察族群關係,此次透過更完整的基因組資料,讓研究團隊能進一步理解不同島嶼族群的遺傳結構與演化關係。研究團隊未來將進一步探討兩棲類、爬行類等島嶼生物的族群演化與遺傳分化,透過不同物種的比較,了解島嶼環境與生物特性如何共同影響族群的演化歷程。
這項研究也是文大生命科學系與日本琉球大學長期學術合作的延伸,雙方自2013年起推動生物相關國際聯合課程,安排日本師生來台授課,也帶領學生赴琉球大學進行移地學習,並於2018年簽署姊妹校合作。此次研究過程中,日本研究團隊來台進行艾氏樹蛙實地採樣,文化大學研究團隊則赴日本參與後續研究與分析,從野外調查、樣本蒐集到基因資料解析,逐步完成研究。
AI outlook — possibilities, not facts
研究團隊將進一步探討兩棲類、爬行類等島嶼生物的族群演化與遺傳分化。
Likely · Within months

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