Effect of cleaner fish on sea lice in Norwegian salmon aquaculture: a national scale data analysis

Overview
TitleEffect of cleaner fish on sea lice in Norwegian salmon aquaculture: a national scale data analysis
AuthorsBarrett LT, Overton K, Stien LH, Oppedal F, Dempster T
TypeJournal Article
Journal NameInternational journal for parasitology
VolumeN/A
IssueN/A
Year2020
Page(s)N/A
CitationBarrett LT, Overton K, Stien LH, Oppedal F, Dempster T. Effect of cleaner fish on sea lice in Norwegian salmon aquaculture: a national scale data analysis. International journal for parasitology. 2020 Feb 06.

Abstract

The salmon aquaculture industry has adopted the use of invertivorous 'cleaner fishes' (CF) for biological control of sea louse infestations on farmed salmon. At present, ∼50 million CF are used annually in Norway alone, with variable success in experimental and industrial contexts. We used a national scale database of louse counts, delousing treatments and CF stocking events on Norwegian salmon farms to test for evidence of CF efficacy at 488 sites that completed a grow-out cycle within 2016-2018. Our analysis revealed that sites using more CF over the duration of a grow-out cycle did not have fewer lice on average, likely because CF use is reactive and in proportion to the scale of the louse problem. Over time within sites, we found that (i) sites using more CF early in the grow-out cycle were able to wait slightly longer (conservatively, a 5.2 week delay with 5000 CF stocked week

Author Details
Additional information about authors:
Details
1Luke T Barrett
2Kathy Overton
3Lars H Stien
4Frode Oppedal
5Tim Dempster
Properties
Additional details for this publication include:
Property NameValue
Journal CountryEngland
Publication TypeJournal Article
Language Abbreng
LanguageEnglish
CopyrightCopyright © 2020. Published by Elsevier Ltd.
DOI10.1016/j.ijpara.2019.12.005
Elocation10.1016/j.ijpara.2019.12.005
PIIS0020-7519(20)30012-6
Journal AbbreviationInt. J. Parasitol.
Publication Date2020 Feb 06
eISSN1879-0135
ISSN1879-0135
Publication ModelPrint-Electronic
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PMID: PMID:32035989