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dc.contributor.authorSievers, Michael
dc.contributor.authorOppedal, Frode
dc.contributor.authorDitria, Ellen
dc.contributor.authorWright, Daniel W
dc.date.accessioned2019-09-17T01:12:21Z
dc.date.available2019-09-17T01:12:21Z
dc.date.issued2019
dc.identifier.issn2045-2322
dc.identifier.doi10.1038/s41598-019-43533-8
dc.identifier.urihttp://hdl.handle.net/10072/387392
dc.description.abstractUnderstanding how salinity affects marine parasites is vital to understanding their ecology and treatment, particularly for host-parasite systems that traverse marine and freshwater realms such as the globally important Atlantic salmon (Salmo salar), salmon louse (Lepeophtheirus salmonis) system. Growing concerns for wild fish populations, and decreased efficiencies and burgeoning costs of lice treatments for farmed fish has necessitated more environmentally and socially acceptable delousing procedures, such as hyposaline treatments. The effect of brackish water on L. salmonis following primary attachment is largely unknown, with experimental evidence derived mostly from unattached or newly attached copepodids, or adult stages. We aimed to understand how attached lice respond to hyposaline environments to assess effectiveness as a parasite management strategy and to help better define delousing areas used by wild fish. Louse development at 4, 12, 19 and 26 ppt, and survival at 4 ppt, decreased as exposure times increased, but survival was otherwise unaffected. Subjecting salmon to fluctuating, repeat exposures did not influence efficacy. We confirm that free-swimming stages are susceptible, and show that attached copepodids were more tolerant than previously predicted based on experiments on alternate development stages. These results improve our understanding of the utility of hyposaline treatments in aquaculture and self-treating in wild fish, and could apply to other fish-lice parasite systems. Further, these data are important for models predicting host-parasite interactions and can contribute to predictive models on the transmission dynamics of sea lice from farm to wild fish.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherNature Publishing Group
dc.relation.ispartofissue1
dc.relation.ispartofjournalScientific Reports
dc.relation.ispartofvolume9
dc.subject.fieldofresearchMarine and estuarine ecology (incl. marine ichthyology)
dc.subject.fieldofresearchBiological oceanography
dc.subject.fieldofresearchcode310305
dc.subject.fieldofresearchcode370801
dc.subject.keywordsScience & Technology
dc.subject.keywordsMultidisciplinary Sciences
dc.subject.keywordsScience & Technology - Other Topics
dc.subject.keywordsFARMED ATLANTIC SALMON
dc.subject.keywordsLEPEOPHTHEIRUS-SALMONIS
dc.titleThe effectiveness of hyposaline treatments against host-attached salmon lice
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationSievers, M; Oppedal, F; Ditria, E; Wright, DW, The effectiveness of hyposaline treatments against host-attached salmon lice, Scientific Reports, 2019, 9 (1)
dcterms.dateAccepted2019-04-17
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.date.updated2019-09-17T01:09:32Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
gro.hasfulltextFull Text
gro.griffith.authorSievers, Michael K.
gro.griffith.authorDitria, Ellen M.


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