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Science 19 December 2008:
Vol. 322. no. 5909, p. 1790
DOI: 10.1126/science.1156341
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Technical Comments

Comment on "Declining Wild Salmon Populations in Relation to Parasites from Farm Salmon"

Brian E. Riddell,* Richard J. Beamish, Laura J. Richards, John R. Candy

Krkosek et al. (Reports, 14 December 2007, p. 1772) claimed that sea lice spread from salmon farms placed wild pink salmon populations "on a trajectory toward rapid local extinction." Their prediction is inconsistent with observed pink salmon returns and overstates the risks from sea lice and salmon farming.

Fisheries and Oceans Canada, Pacific Biological Station, 3190 Hammond Bay Road, Nanaimo, BC V9T 6N7, Canada.

* To whom correspondence should be addressed. E-mail: brian.e.riddell{at}dfo-mpo.gc.ca

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Science. ISSN 0036-8075 (print), 1095-9203 (online)