sea lamprey

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Maps show spread of aquatic invasive species over time

This screen shot shows the spread of zebra and quagga mussels in 2006. (Image: The Nature Conservancy)

The Nature Conservancy has animated how six invasive species have spread across the Great Lakes over time. The group has created six maps that show population increase and spread since the appearance of each species in the Great Lakes basin and beyond. Sea lamprey, the first of the six invasive species to appear in the area, initially showed up in Lake Erie in 1921. The map shows the population of the fish expanding into the rest of the Great Lakes up until present day. Also included in the maps are Asian carp, zebra and quagga mussels, round goby, Eurasian Ruffe and black carp. Continue Reading →

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Invasive Species: Sea Lamprey

The sea lamprey, an eel-like creature that feeds on host-fish, has been named by The Nature Conservancy as one of the five "usual suspects" doing damage in the Great Lakes basin. (Image: The Nature Conservancy)

By Evan KreagerGreat Lakes Echo

The Nature Conservancy has named sea lampreys one of the five “usual suspects” invading the Great Lakes basin. These eel-looking parasites find a host and suck the life out of it. During the length of one life cycle, a sea lamprey can kill up to 40 pounds worth of fish and can grow up to 3 feet long. Sea lampreys are native to the Atlantic Ocean, Lake Ontario and the St. Lawrence River. Continue Reading →

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New insight on old pesticide spells trouble for the Great Lakes’ invasive sea lamprey

By Jeff Gillies
Oct. 20, 2009

While Great Lakes officials beat back the voracious Asian carp at the gates of Lake Michigan, they still wrangle with another nasty fish that snuck in at least 90 years ago. Sea lampreys, eel-like parasitic fish native to the Atlantic Ocean, use a mouthful of teeth and a bony tongue to latch onto and scrape through fish flesh. (more…) Continue Reading →

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Pheromones in river traps attract sea lampreys

Scientists have found another promising weapon in the battle against sea lampreys, strong evidence that they may win the war against one of the Great Lakes’ most infamous invaders.

Researchers at Michigan State University have begun field tests on a chemical compound that tricks the lampreys and lures them into traps. Continue Reading →

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