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Comparative biology of the sculpins of Lake Superior

Journal of Great Lakes Research

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Abstract

The slimy sculpin (Cottus cognatus), spoonhead sculpin (Cottus ricei), and deepwater sculpin (Myoxocephalus thompsoni) are abundant fishes in Lake Superior. Slimy and spoonhead sculpins occupy a zone from near shore to depths of 210 m but are generally most abundant in waters 50 to 90 m deep. Deepwater sculpins are found in waters from 15 to 407 m deep and are most abundant at depths greater than 70 m. All three species of sculpins eat mainly burrowing amphipods (Pontoporeia affinis), although deepwater sculpins also eat substantial quantitites of opossum shrimp (Mysis relicta). The three sculpins grow at similar rates. Among the fishes aged, the maximum age of slimy sculpins was 5 years, compared with 6 years for spoonhead sculpins. and 7 years for deepwater sculpins. Indirect evicdence indicates that slimy and spoonhead sculpins spawn in the spring, and deepwater sculpins spawn in midwinter.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparative biology of the sculpins of Lake Superior
Series title:
Journal of Great Lakes Research
Volume
14
Issue:
1
Year Published:
1988
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 44-51
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Great Lakes Research
First page:
44
Last page:
51