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      Drug resistance in sea lice: a threat to salmonid aquaculture.

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          Abstract

          Sea lice are copepod ectoparasites with vast reproductive potential and affect a wide variety of fish species. The number of parasites causing morbidity is proportional to fish size. Natural low host density restricts massive parasite dispersal. However, expanded salmon farming has shifted the conditions in favor of the parasite. Salmon farms are often situated near wild salmonid migrating routes, with smolts being particularly vulnerable to sea lice infestation. In order to protect both farmed and wild salmonids passing or residing in the proximity of the farms, several measures are taken. Medicinal treatment of farmed fish has been the most predictable and efficacious, leading to extensive use of the available compounds. This has resulted in drug-resistant parasites occurring on farmed and possibly wild salmonids.

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          Author and article information

          Journal
          Trends Parasitol.
          Trends in parasitology
          1471-5007
          1471-4922
          Feb 2015
          : 31
          : 2
          Affiliations
          [1 ] Norwegian University of Life Sciences, School of Veterinary Science, Sea Lice Research Centre, Oslo, Norway. Electronic address: stian.morch.aaen@nmbu.no.
          [2 ] Norwegian University of Life Sciences, School of Veterinary Science, Sea Lice Research Centre, Oslo, Norway.
          [3 ] Norwegian University of Life Sciences, School of Veterinary Science, Sea Lice Research Centre, Oslo, Norway. Electronic address: tor.e.horsberg@nmbu.no.
          Article
          S1471-4922(14)00209-8
          10.1016/j.pt.2014.12.006
          25639521
          b226de6a-b398-438f-8d6b-d8e7eac289b7
          Copyright © 2014 Elsevier Ltd. All rights reserved.
          History

          bioassays,molecular methods,resistance,salmon aquaculture,salmon lice

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