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Invasive Species in a Globalized WorldEcological, Social, and Legal Perspectives on Policy$
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Reuben P. Keller, Marc W. Cadotte, and Glenn Sandiford

Print publication date: 2014

Print ISBN-13: 9780226166049

Published to Chicago Scholarship Online: May 2015

DOI: 10.7208/chicago/9780226166216.001.0001

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Climate Change Challenges in the Management of Invasive Sea Lamprey in Lake Superior

Climate Change Challenges in the Management of Invasive Sea Lamprey in Lake Superior

Chapter:
(p.209) Chapter Ten Climate Change Challenges in the Management of Invasive Sea Lamprey in Lake Superior
Source:
Invasive Species in a Globalized World
Author(s):

James F. Kitchell

Timothy Cline

Val Bennington

Galen A. McKinley

Publisher:
University of Chicago Press
DOI:10.7208/chicago/9780226166216.003.0010

Invasion of sea lamprey and commercial fisheries combined historically to cause collapse of many native fish populations in the Great Lakes. Due to subsequent control of sea lamprey, many native fish populations are restored and are now more abundant in Lake Superior than at any recorded time. Owing to climate change effects since 1980, Lake Superior is currently one of the most rapidly warming lakes on the planet. This combination of more abundant host fish species and climate warming effects has resulted in larger sea lampreys than at any time in the history of Lake Superior. Larger lampreys cause greater mortality rates for host species and have greater fecundity producing a positive feedback that can have increasingly negative effects on host species population dynamics and food web interactions. This analysis focuses on two host species, the Chinook salmon and the white sucker, that have habitat and temperature preferences different from those of previously evaluated lamprey hosts. In the Great Lakes region, invasive sea lampreys are a continuing threat to host fish populations and, therefore, controlled at minimum possible levels. In regions of Europe and northwestern US states, native lampreys are the target of restoration efforts and treated as the equivalent of an endangered resource.

Keywords:   invasive species, Great Lakes, sea lamprey, Petromyzon marinus, climate change, fisheries management, Lake Superior

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