{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T20:26:18Z","timestamp":1790367978004,"version":"4.1.0"},"reference-count":58,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2014,2,19]],"date-time":"2014-02-19T00:00:00Z","timestamp":1392768000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"The Norwegian Seafood Research Fund","award":["NFR 199778\/S40"],"award-info":[{"award-number":["NFR 199778\/S40"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Fish Diseases"],"published-print":{"date-parts":[[2014,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The sea louse <jats:italic><jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>aligus rogercresseyi<\/jats:italic> is a major threat to <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hilean salmonid farming. Pyrethroids have been used for anticaligus treatments since 2007, but have shown reduced effect, most likely due to resistance development. Pyrethroid resistance is also a known problem in <jats:italic><jats:styled-content style=\"fixed-case\">L<\/jats:styled-content>epeophtheirus salmonis<\/jats:italic> in the <jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>orthern <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>emisphere. This study describes the development of deltamethrin resistance in <jats:italic><jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>.\u00a0rogercresseyi<\/jats:italic> based on bioassays and usage data for pyrethroids in <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hilean aquaculture. These results were compared to bioassays from <jats:italic><jats:styled-content style=\"fixed-case\">L<\/jats:styled-content>.\u00a0salmonis<\/jats:italic> from Norway and to <jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>orwegian usage data. Available deltamethrin bioassay results from 2007 and 2008, as well as bioassays from <jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>orway, were collected and remodelled. Bioassays were performed on field\u2010collected sea lice in region X in <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hile in 2012 and 2013. Bioassays from 2007 were performed prior to the introduction of pyrethroids to the <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hilean market. Both the results from 2008 and 2012 showed an increased resistance. Increased pyrethroid resistance was also indicated by the increased use of pyrethroids in <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hilean aquaculture compared with the production of salmonids. A similar trend was seen in the <jats:styled-content style=\"fixed-case\">N<\/jats:styled-content>orwegian usage data. The bioassay results from <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hile from 2012 and 2013 also indicated a difference in the susceptibility to deltamethrin between male and female caligus.<\/jats:p>","DOI":"10.1111\/jfd.12223","type":"journal-article","created":{"date-parts":[[2014,2,20]],"date-time":"2014-02-20T05:29:59Z","timestamp":1392874199000},"page":"877-890","source":"Crossref","is-referenced-by-count":71,"title":["Deltamethrin resistance in the sea louse <i><scp>C<\/scp>aligus rogercresseyi<\/i> (<scp>B<\/scp>oxhall and <scp>B<\/scp>ravo) in <scp>C<\/scp>hile: bioassay results and usage data for antiparasitic agents with references to <scp>N<\/scp>orwegian conditions"],"prefix":"10.1111","volume":"37","author":[{"given":"K O","family":"Helgesen","sequence":"first","affiliation":[{"name":"Department of Pharmacology and Toxicology Norwegian School of Veterinary Science Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S","family":"Bravo","sequence":"additional","affiliation":[{"name":"Aquaculture Institute Universidad Austral de Chile Puerto Montt Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S","family":"Sevatdal","sequence":"additional","affiliation":[{"name":"VESO Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J","family":"Mendoza","sequence":"additional","affiliation":[{"name":"Mainstream Chile S.A. Puerto Montt Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T E","family":"Horsberg","sequence":"additional","affiliation":[{"name":"Department of Pharmacology and Toxicology Norwegian School of Veterinary Science Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,2,19]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1163\/18759866-0690102015"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbd.2011.12.002"},{"key":"e_1_2_7_4_1","first-page":"197","article-title":"Sea lice in Chilean salmon farms","volume":"23","author":"Bravo S.","year":"2003","journal-title":"Bulletin of the European Association of Fish Pathologists"},{"key":"e_1_2_7_5_1","unstructured":"BravoS.(2010a)Caligidae Ectoparasites on Farmed Salmonids in Chile.Theses for the degree Doctor philosophiae Norwegian School of Veterinary Science Oslo."},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.exppara.2009.12.001"},{"key":"e_1_2_7_7_1","unstructured":"BravoS.&SevatdalS.(2009b)Sensitivity assesment of Caligus rogercresseyi to deltamethrin. 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