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Science 19 December 2008:
Vol. 322. no. 5909, p. 1790
DOI: 10.1126/science.1156578
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Technical Comments

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

Martin Krkosek,1,2*{dagger} Jennifer S. Ford,3 Alexandra Morton,4 Subhash Lele,1 Mark A. Lewis1,2

We evaluated the effect of sea lice (Lepeophtheirus salmonis) infestations on wild pink salmon (Oncorhynchus gorbuscha) populations in the Broughton Archipelago, British Columbia. Riddell et al. suggest that we ignored factors and selectively used data. Here, we clarify misunderstandings and provide analysis to test the strength of our conclusions.

1 Centre for Mathematical Biology, Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, AB, Canada.
2 Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada.
3 Ecology Action Centre, Halifax, NS, Canada.
4 Salmon Coast Field Station, Simoom Sound, BC, Canada.

{dagger} Present address: School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98105, USA.

* To whom correspondence should be addressed. E-mail: mkrkosek{at}ualberta.ca

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