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USGS · 1000257

Abnormal tooth development in a sea lamprey

Patrick J. Manion·Lee H. Hanson
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Abstract

Sea lampreys en route to their spawning grounds have been captured at mechanical or electrical structures that have been in operation for 1 to 27 spawning seasons (1949-75) on some 167 tributaries of the upper Great Lakes; more than 750,000 were taken in 1949-70 (Smith 1971). Among these lampreys (all of which were routinely examined at the time of capture) was one female (length, 434 mm; weight, 130 g) with markedly underdeveloped teeth. It was captured in May 1968 at an electrical barrier in the Ocqueoc River, a Michigan tributary of Lake Huron

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Patrick J. Manion, Lee H. Hanson. 1977. Abnormal tooth development in a sea lamprey. https://doi.org/10.1577/1548-8659(1977)39%5B127%3Aatdias%5D2.0.co%3B2

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