Walleye (Stizostedion vitreum)
Walleye (Stizostedion vitreum)

Walleye

(Stizostedion vitreum)

Description

  • Also called Pike-Perch and/or Pickerel.
  • Native to North America east of the Continental Divide and to northeastern BC.
  • Introduced illegally in 1960 into the Roosevelt Reservoir, walleye have spread upstream past the Keenleyside boat lock in Castlegar.
  • Have a long cylindircal body, adults are typically 30-50 cm.
  • Typical weight range is 0.5-1 kg.
  • Can reach a maximum age of 14-18 years.

Consequences of Invasion

  • Predicted to have a moderate to high impcat on BC’s freshwater ecosystems.
  • Competes with other species for common food resources.
  • Significant predator of native and introduced salmonid populations.
  • Based on modeling results for the lower Columbia River, walleye is estimated to be responsible for only a small loss in productivity of salmon populations and less important than native predators.

Integrated Pest Management

  • It is illegal to transfer live fish between water bodies. People caught moving or releasing live fish into lakes or streams in BC will be prosecuted. (This does not apply to catch-and-release fishing, when releasing fish directly back into the water at the point of capture.)

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