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dc.contributor.authorGentry, Katherine
dc.contributor.authorBui, Samantha
dc.contributor.authorOppedal, Frode
dc.contributor.authorBjelland, Reidun Marie
dc.contributor.authorNola, Velimir
dc.contributor.authorDempster, Timothy David
dc.date.accessioned2022-03-09T11:35:34Z
dc.date.available2022-03-09T11:35:34Z
dc.date.created2022-02-11T14:58:55Z
dc.date.issued2021
dc.identifier.citationAquaculture Environment Interactions. 2021, 13 41-49.en_US
dc.identifier.issn1869-215X
dc.identifier.urihttps://hdl.handle.net/11250/2983983
dc.description.abstractSecuring the welfare and maximising the lice removal efficacy of ~60 million cleaner fish used each year on salmonid farms is essential to develop a productive and ethical industry with low salmon lice Lepeophtheirus salmonis levels. We tested whether ballan wrasse Labrus bergylta welfare and lice consumption differed depending upon whether they were acclimatised in cages with either no Atlantic salmon Salmo salar, salmon without lice, or lice-infested salmon, prior to deployment in sea cages. After 1 wk, commercial densities of lice-infested salmon were stocked with the acclimatised wrasse in cages and kept for a further 3 wk. Each week, the number of lice on salmon was counted and a subset of wrasse was sampled for gut contents and physical welfare. Lice occurred less frequently in wrasse guts (6% of all dietary items) compared to caprellid amphipods (76%). Ballan wrasse consumed more lice if they were pre-exposed to lice-infested salmon (mean ± SE = 0.79 ± 0.4 lice) compared to wrasse not pre-exposed to salmon (0.15 ± 0.1 lice, p = 0.003) or wrasse pre-exposed to salmon without lice (0.01 ± 0.09 lice, p = 0.03). This did not affect overall mobile lice loads on salmon, which doubled over the study period regardless of acclimatisation strategy. Decline in condition factor (K) and the increase in specific physical damage over time were not affected by acclimatisation strategy. If welfare can be secured, acclimatisation could be tested on cleaner fish at commercial scales as a strategy to improve biological control agents.en_US
dc.language.isoengen_US
dc.titleAcclimation with lice-infested salmon improves cleaner fish delousing performanceen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber41-49en_US
dc.source.volume13en_US
dc.source.journalAquaculture Environment Interactionsen_US
dc.identifier.doi10.3354/aei00385
dc.identifier.cristin2000605
dc.relation.projectNorges forskningsråd: 267800en_US
dc.relation.projectHavforskningsinstituttet: 14597en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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