文章基本信息

标题：Observations of Swimming Ability in Shovelnose Sturgeon ( Scaphirhynchus platorynchus )
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作者：S. Reid Adams ; Glenn R. Parsons ; Jan Jeffrey Hoover 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：1997
卷号：12
期号：4
页码：631-633
DOI：10.1080/02705060.1997.9663578
出版社：Taylor & Francis
摘要：Swimming performance and behavior of five adult (57—69 cm fork length) shovelnose sturgeon, Scaphirhynchus platorynchus, were studied in a 945-L swim tunnel at 16° C. Fifteen-minute critical swimming speeds ranged from 65 to 116 cm s -1 . Sturgeon swam volitionally at low speeds (5—30 cm s -1 ), but at higher speeds (40—120 cm s -1 ) sturgeon alternated between active swimming and appressing themselves to the bottom of the tunnel. This second behavior is enhanced by sturgeon morphology—streamlined body shape, flat rostrum, and large pectoral fins. It allows shovelnose sturgeon to exploit river bottoms as a refugia from current and maintain position in high velocities.