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題名 | Redescription of the Types of Ischikauia macrolepis Regan, 1908, an Extinct Cyprinid (Teleostei: Cyprinidae) from Taiwan and the Replacement in the Genus, Rasborinus Oshima, 1920=重新記述臺灣已滅絕之鯉科魚類之模式標本:大鱗石川魚Ischikauia macrolepis Regan, 1908, 並更改屬名為細国屬Rasborinus Oshima, 1920 |
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作者 | 陳義雄; 方力行; | 書刊名 | 動物研究學刊 |
卷期 | 39:1 2000.01[民89.01] |
頁次 | 頁13-17 |
分類號 | 388.593 |
關鍵詞 | 細国屬; 大鱗石川魚; 特有種; 魚類分類; 臺灣; Rasborinus; Ischikauria macrolepis; Endemic species; Fish taxonomy; Taiwan; |
語文 | 英文(English) |
中文摘要 | 本文係報告重新檢視三尾共模標本:大鱗石川魚Ischikauia macrolepis Regan, 1908之結果,建議將其歸入細[]屬Rasborinus Oshima, 1920。並重新檢視細[]屬的模式種:高木氏細[]Rasborinus takakii Oshima, 1920之後的研究結果顯示:高木氏細[]為大鱗石川魚的同種異名,而應修正學名為大鱗細[]R.macrolepis (Regan)。大鱗細[]雖為臺灣特有種,但族群極可能已全部滅絕。本種與中國大陸採獲的近緣種,線紋細[]R. lineatus (Pellegrin, 1907)之標本,能明顯地以背鰭前鱗、臀鰭鰭條數目及胸鰭長度予以區分,所以大鱗細[]仍應視為臺灣的有效種。 |
英文摘要 | Three syntypes of Ischikauia macrolepis Regan, 1908 in the British Museum (Natural History) have been examined, and they should belong to the genus Rasborinus Oshima, 1920. The type species of Rasborinus, R. takakii Oshima, 1920, should be a junior synonym of I. macrolepis Regan, 1908. The species was endemic to Taiwan but is now apparently extinct in Taiwanese fresh waters. This species can be distinguished from the related species, R. lineatus (Pellegrin), by differentiation of predorsal scales and fin ray counts, and pectoral fin length. |
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