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Ted Jargenson, a city maintenance employee, is checking on a remote roadside pipe when he is attacked and killed by several hungry lampreys. Roughly 1 week later, Michael Parker, his wife Cate, daughter Nicole and son Kyle move to the small lakeside town for the summer, as Michael is tasked with controlling the lamprey population in Lake Charlevoix.
The sea lamprey is an aggressive predator by nature, which gives it a competitive advantage in a lake system where it has no predators and its prey lacks defenses against it. The sea lamprey played a large role in the destruction of the Lake Superior trout population.
A major threat to the lake whitefish is an invasive parasite species, the sea lamprey. It is one of a number of species (in addition to the lake trout and lake herring) aggressively attacked by sea lamprey. In Lake Michigan the sea lamprey began to decimate indigenous fish populations in the 1930s and 1940s.
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Each larva that grows into a juvenile sea lamprey will migrate into Lake Michigan and can kill 40 pounds of fish in its 12- to 18-month feeding period.
Sea lamprey – fish that came through canals. Japanese stiltgrass – plant introduced in shipment packing material. Grass carp – fish introduced for aquaculture.
Sea lampreys devastated the fishing industry of the Great Lakes. Within 20 years of the lamprey entering the Great Lakes, the harvesting of lake trout was reduced by 98%. Control efforts included lampricides, physical barriers, pheromone alarms and baiting, and trapping. The control has been extremely successful in reducing sea lamprey ...
One lampricide is used in the headwaters of Lake Champlain and the Great Lakes to control the sea lamprey (Petromyzon marinus), an invasive species to these lakes. [1] TFM (3-trifluoromethyl-4-nitrophenol) is the main chemical used for this purpose. As it is hydrophobic, it passes through biological membranes. [2]