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The stuff of nightmares in both their looks and the wounds inflicted on their victims, sea lampreys (Petromyzon marinus) are perhaps the deadliest invasive species to ever enter the Great Lakes. At the invasion's apex in the mid-20th century, harvests of lake trout (Salvelinus namaycush), the lampreys' preferred host fish in the Great Lakes, plummeted from peak annual catches of 15 million pounds to just a few hundred thousand pounds per year – a drop of 98% in only a few decades.
Threatening the complete collapse of the fishery, the sea lamprey invasion triggered an environmental awakening in the region and prompted an international treaty that secured unprecedented cooperation across political boundaries to protect the Great Lakes. Fueled by a pioneering scientific spirit, the war on Great Lakes sea lampreys led to discoveries that are the backbone of the program that eventually brought the creature under control and still protects the largest freshwater ecosystem in the world to this day.
Great Lakes Sea Lamprey draws on extensive interviews with individuals who experienced the invasion firsthand as well as a trove of unexplored archival materials to tell the incredible story of sea lamprey in the Great Lakes – what started the invasion, how it was halted, and what this history can teach us about the response to biological invaders in the present and future. Richly illustrated with colour and black & white photographs, Great Lakes Sea Lamprey will interest readers concerned with the health of the Great Lakes, the history of the conservation movement, and the ongoing threat of invasive species.
Cory Brant is a postdoctoral researcher at the Water Center of the Graham Institute of Sustainability at the University of Michigan.
"Cory Brant delivers the definitive history of the sea lamprey in the Great Lakes, weaving together personal interviews, scientific information, compelling stories of invasion and discovery, and the histories of shipping, commercial fishing, the Erie and Welland Canals, and the locks at Sault Ste. Marie – all in dovetail with the life history of the lamprey."
– Jerry Dennis, author of The Windward Shore: A Winter on the Great Lakes and The Living Great Lakes: Searching for the Heart of the Inland Seas