Sea lamprey – Lamprey Surveys - adult sea lamprey

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Great Lakes Fishery Commission - Sea Lamprey adult sea lamprey


Sea lampreys (Petromyzon marinus) are parasitic fish native to the Atlantic in Great Lakes tributaries, at either the larval or adult stages of their life cycle.

The sea lamprey (Petromyzon marinus) is a parasitic lamprey native to the Northern . After preying on larger fish at sea, the adult lampreys migrate up the rivers to spawn, whereupon they quickly die of natural causes and decompose, thus.

Lampreys are an ancient extant lineage of jawless fish of the order Petromyzontiformes, placed in the superclass Cyclostomata. The adult lamprey may be characterized by a toothed, funnel-like sucking . Research on sea lampreys has revealed that sexually mature males use a specialized heat- producing tissue in the.