Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada

10.5281/zenodo.4005400

Fraser River Pacific salmon have declined in recent decades possibly from parasitism by sea lice (Caligus clemensi and Lepeophtheirus salmonis). We describe the abundance of both louse species infesting co-migrating juvenile pink (Oncorhynchus gorbuscha), chum (O. keta), and sockeye (O. nerka) salmon over five years in the Discovery Islands and Johnstone Strait, British Columbia. The generalist louse, C. clemensi, was 5-, 7-, and 39-times more abundant than the salmonid specialist, L. salmonis, on pink , chum, and sockeye salmon, respectively. Caligus clemensi abundance was higher on pinks (0.45, 95% CI: 0.38-0.55) and sockeye (0.39 95% CI 32 0.33-0.47) than chum. L. salmonis abundance was highest on pinks (0.09, 95% CI = 0.06-0.15). Caligus clemensi had higher abundances in Johnstone Strait than the Discovery Islands. These results suggest differences in host specialization and transmission dynamics between louse species. Because both lice infest farmed salmon, but only C. clemensi infests Pacific herring (Clupea pallasii), conservation science and management regarding lice and Fraser River salmon should further consider C. clemensi and transmission from farmed salmon and wild herring.

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Licence: Creative Commons Attribution 4.0

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Metadata Reference Date(s) March 13, 2023 (Publication)
March 13, 2023 (Revision)
Data Reference Date(s) September 04, 2020 (Publication)
Frequency of Update As Needed

Responsible Party 1
Name
Brookson, Cole
Affiliation
University of Alberta
Email
brookson@ualberta.ca
Role
  • Author
  • Point of Contact
Responsible Party 2
Name
Krkosek, Martin
Affiliation
University of Toronto
Email
martin.krkosek@utoronto.ca
Role
  • Point of Contact
  • Principal Investigator
Responsible Party 3
Name
Hunt, Brian
Affiliation
University of British Columbia
Email
b.hunt@oceans.ubc.ca
Role
Author
Responsible Party 4
Name
Johnson, Brett
Affiliation
Hakai Institute
Email
brett.johnson@hakai.org
Role
  • Author
  • Custodian
  • Distributor
  • Owner
Responsible Party 5
Name
Rogers, Luke
Affiliation
Fisheries and Oceans Canada ROR logo
Role
Author
Responsible Party 6
Name
Godwin, Sean
Affiliation
Dalhousie University
Email
sean.godwin@gmail.com
Role
  • Point of Contact
  • Principal Investigator

Field Value
Ocean Variables Other
Scope Dataset
Status Completed
Topic Category oceans
Maintenance Note Generated from https://cioos-siooc.github.io/metadata-entry-form
Spatial Extent [[[-126.87477074, 49.80151064], [-124.30109865, 49.80151064], [-124.30109865, 50.66883255], [-126.87477074, 50.66883255], [-126.87477074, 49.80151064]]]
North Bounding Latitude 50.66883255
South Bounding Latitude 49.80151064
East Bounding Longitude -124.30109865
West Bounding Longitude -126.87477074
Vertical Extent
Min
0.0
Max
9.0
Default Locale English
Citation identifier
Code
https://doi.org/10.5281/zenodo.4005400
Included in Data Catalogue
Included in Data Catalogue 1
Name
Hakai Data Catalogue
Description
Science on the Coastal Margin
URL
https://catalogue.hakai.org