Confidence in assessing the effectiveness of bath treatments for the control of sea lice on Norwegian salmon farms

Daniel F. Jimenez, Peter A Heuch, Crawford Revie, George Gettinby

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The salmon louse Lepeophtheirus salmonis is the most important ectoparasite of farmed salmonids in the Northern hemisphere, having a major economic and ecological impact on the sustainability of this sector of the aquaculture industry. To a large extent, control of L. salmonis relies on the use of topical delousing chemical treatments in the form of baths. Improvements in methods for the administration and assessment of bathtreatments have not kept pace with the rapid modernization and intensification of the salmon industry. Bathtreatments present technical and biological challenges, including best practice methods for the estimation of the effect of licetreatment interventions. In this communication, we compare and contrast methods to calculate and interpret treatmenteffectiveness at pen and site level. The methods are illustrated for the calculation of the percentage reduction in mean abundance of mobile lice with a measure of confidence. Six different methods for the calculation of confidence intervals across different probability levels were compared. We found the quasi-Poisson method with a 90% confidence interval to be informative and robust for the measurement of bathtreatment performance.
LanguageEnglish
Pages58-65
Number of pages8
JournalAquaculture
Volume334-349
DOIs
Publication statusPublished - May 2012

Fingerprint

Caligidae
louse
salmon
farm
Lepeophtheirus salmonis
farms
confidence interval
methodology
aquaculture industry
ectoparasite
modernization
lice
ecological impact
ectoparasites
chemical control
Salmonidae
economic impact
animal communication
method
sea

Keywords

  • Atlantic salmon
  • bath treatments
  • efficacy
  • sea lice
  • Lepeophtheirus salmonis

Cite this

Jimenez, Daniel F. ; Heuch, Peter A ; Revie, Crawford ; Gettinby, George. / Confidence in assessing the effectiveness of bath treatments for the control of sea lice on Norwegian salmon farms. In: Aquaculture. 2012 ; Vol. 334-349. pp. 58-65.
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Confidence in assessing the effectiveness of bath treatments for the control of sea lice on Norwegian salmon farms. / Jimenez, Daniel F.; Heuch, Peter A; Revie, Crawford; Gettinby, George.

In: Aquaculture, Vol. 334-349, 05.2012, p. 58-65.

Research output: Contribution to journalArticle

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