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Opsariichthys pachycephalus : ウィキペディア英語版 | Opsariichthys pachycephalus
''Opsariichthys pachycephalus'' is a species of ray-finned fish in the genus ''Opsariichthys'' endemic to Taiwan. It is one of the most common minnows of Taiwan, found in the entire western part of the island from sea level to 1200 m elevation. It is a small species reaching a maximum length of TL.〔 ==Colonization history== ''Opsariichthys pachycephalus'' populations show strong genetic structuring between drainages and weak genetic structuring within drainages. It is suggested that the current population structuring reflects colonization from two glacial refugia, formed when the cooler climate during the last glacial period restricted this species to lower elevations: one on the land bridge that connected Taiwan to the Asian mainland, and the other one in the south, east of the Gaoping River. Further divergence may be due to founder effects, bottlenecks, and selection.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Opsariichthys pachycephalus」の詳細全文を読む
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