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Differentiation in Coregonus zenithicus in Lake Superior

Canadian Journal of Fisheries and Aquatic Sciences

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Abstract

Morphological variation in Coregonus zenithicus has long plagued biologists working on Lake Superior ciscoes. Some of this variation is due to allometric growth; earlier workers incorrectly recognized large C. zenithicus as a distinct species, C. nigripinnis cyanopterus. Coregonus reighardi dymondi is a variant of C. zenithicus in northern bays of Lake Superior and Lake Nipigon. The morphological differences between members of spring and fall spawning populations of C. zenithicus in Lake Superior are no greater than those between geographically separate populations. We conclude that spawning time and geographic isolation act similarly in effecting differentiation of coregonine populations, and that populations with different spawning times do not necessarily represent different species.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Differentiation in Coregonus zenithicus in Lake Superior
Series title:
Canadian Journal of Fisheries and Aquatic Sciences
Volume
37
Issue:
11
Year Published:
1980
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 2228-2235
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2228
Last page:
2235
Number of Pages:
7