Sea Lamprey |
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Petromyzon marinus
The invasion of the parasitic sea lamprey Petromyzon marinus (shown attached to a lake trout in the photo)
led to the collapse of lake trout Salvelinus namaycush populations in the Great Lakes during the
mid-20th century. It also contributed to the extirpation of the shortjaw cisco Coregonus zenithicus and the extinctions of three endemic fishes: the deepwater cisco C.
johannae, the blackfin cisco C. nigripinnis, and the shortnose cisco C. reighardi.
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