Genetic differentiation of walleye stocks in Lake St. Clair and western Lake Erie
Fish and Wildlife Technical Report
28
By: Thomas N. Todd
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Abstract
Allozyme data from six spawning sites of walleyes (Stizostedion vitreum vitreum) in western Lake Erie and two in Lake St. Clair demonstrated significant differences between allelic frequencies in fish from the two lakes. In contrast, differences were only slight between walleyes from different spawning sites within each lake. Of 21 presumptive genetic loci assayed electrophoretically, 4 were polymorphic enough to differentiate the populations. Allelic frequencies differentiating the stocks were stable between year classes, sexes, and sample years, showing that fry hatched in a particular area were returning there to spawn. These findings support other evidence for homing in Great Lakes walleyes.
Suggested Citation
Todd, T.N., 1990, Genetic differentiation of walleye stocks in Lake St. Clair and western Lake Erie: Fish and Wildlife Technical Report 28, 19 p.
| Publication type | Report |
|---|---|
| Publication Subtype | Federal Government Series |
| Title | Genetic differentiation of walleye stocks in Lake St. Clair and western Lake Erie |
| Series title | Fish and Wildlife Technical Report |
| Series number | 28 |
| Year Published | 1990 |
| Language | English |
| Publisher | U.S. Fish and Wildlife Service |
| Contributing office(s) | Great Lakes Science Center |
| Description | 19 p. |
| First page | 0 |
| Last page | 19 |