Estimating the dispersal of Lepeophtheirus salmonis sea lice within and among Atlantic salmon sites of the Bay of Fundy, New Brunswick

Overview
TitleEstimating the dispersal of Lepeophtheirus salmonis sea lice within and among Atlantic salmon sites of the Bay of Fundy, New Brunswick
AuthorsParent MI, Stryhn H, Hammell KL, Fast MD, Grant J, Vanderstichel R
TypeJournal Article
Journal NameJournal of fish diseases
VolumeN/A
IssueN/A
Year2021
Page(s)N/A
CitationParent MI, Stryhn H, Hammell KL, Fast MD, Grant J, Vanderstichel R. Estimating the dispersal of Lepeophtheirus salmonis sea lice within and among Atlantic salmon sites of the Bay of Fundy, New Brunswick. Journal of fish diseases. 2021 Aug 19.

Abstract

The objective of this study was to estimate the impact of infestation pressures on the abundance of the parasitic sea louse, Lepeophtheirus salmonis, in the Bay of Fundy, New Brunswick (NB), Canada, using the Fish-iTrends database for the years 2009-2018. Infestation pressures were calculated as time-lagged weighted averages of the abundance of adult female (AF) sea lice within a site (internal infestation pressure: IIP) and among sites (external infestation pressure: EIP). The EIP weights were calculated from seaway distances among sites and a Gaussian kernel density for bandwidths of 5 to 60 km. The EIP with a bandwidth of 10 km had the best fit, as determined with Akaike's information criterion, and historical AF sea lice abundance. This estimated dispersal distance of 10 km was similar to previous studies in Norway, Scotland and in New Brunswick. The infestation pressures estimated from empirical AF sea lice abundance within and among sites significantly increased the abundance of AF sea lice (p < .001). This study concludes that sea lice burdens within Atlantic salmon farms in the Bay of Fundy, NB, are affected by within site management and could be improved by synchronizing treatments between sites.

Author Details
Additional information about authors:
Details
1Marianne I Parent
2Henrik Stryhn
3K Larry Hammell
4Mark D Fast
5Jon Grant
6Raphaël Vanderstichel
Properties
Additional details for this publication include:
Property NameValue
Journal CountryEngland
Publication TypeJournal Article
Language Abbreng
LanguageEnglish
Copyright© 2021 The Authors. Journal of Fish Diseases published by John Wiley & Sons Ltd.
Elocation10.1111/jfd.13511
DOI10.1111/jfd.13511
Journal AbbreviationJ Fish Dis
Publication Date2021 Aug 19
eISSN1365-2761
ISSN1365-2761
Publication ModelPrint-Electronic
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PMID: PMID:34411315