Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada
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 (Oncorhynchus keta), and sockeye (Onco...
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NRC Research Press (a division of Canadian Science Publishing)
2020
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ftunivtoronto:oai:tspace.library.utoronto.ca:1807/103018 2023-05-15T17:52:53+02:00 Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada Brookson, Cole B. Krkošek, Martin Hunt, Brian P.V. Johnson, Brett T. Rogers, Luke A. Godwin, Sean C. 2020-08-23 application/pdf application/msword http://hdl.handle.net/1807/103018 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2020-0160 unknown NRC Research Press (a division of Canadian Science Publishing) 0706-652X http://hdl.handle.net/1807/103018 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2020-0160 Article Article Post-Print 2020 ftunivtoronto 2021-04-02T15:21:54Z 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 (Oncorhynchus keta), and sockeye (Oncorhynchus nerka) salmon over 5 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 pink salmon (0.45, 95% CI: 0.38–0.55) and sockeye (0.39, 95% CI: 0.33–0.47) than on chum salmon. Lepeophtheirus salmonis abundance was highest on pink salmon (0.09, 95% CI = 0.06–0.15). Caligus clemensi had higher abundances in Johnstone Strait than in 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. The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon University of Toronto: Research Repository T-Space Canada Pacific British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Fraser River ENVELOPE(-62.243,-62.243,56.619,56.619) |
institution |
Open Polar |
collection |
University of Toronto: Research Repository T-Space |
op_collection_id |
ftunivtoronto |
language |
unknown |
description |
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 (Oncorhynchus keta), and sockeye (Oncorhynchus nerka) salmon over 5 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 pink salmon (0.45, 95% CI: 0.38–0.55) and sockeye (0.39, 95% CI: 0.33–0.47) than on chum salmon. Lepeophtheirus salmonis abundance was highest on pink salmon (0.09, 95% CI = 0.06–0.15). Caligus clemensi had higher abundances in Johnstone Strait than in 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. The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author. |
format |
Article in Journal/Newspaper |
author |
Brookson, Cole B. Krkošek, Martin Hunt, Brian P.V. Johnson, Brett T. Rogers, Luke A. Godwin, Sean C. |
spellingShingle |
Brookson, Cole B. Krkošek, Martin Hunt, Brian P.V. Johnson, Brett T. Rogers, Luke A. Godwin, Sean C. Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada |
author_facet |
Brookson, Cole B. Krkošek, Martin Hunt, Brian P.V. Johnson, Brett T. Rogers, Luke A. Godwin, Sean C. |
author_sort |
Brookson, Cole B. |
title |
Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada |
title_short |
Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada |
title_full |
Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada |
title_fullStr |
Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada |
title_full_unstemmed |
Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada |
title_sort |
differential infestation of juvenile pacific salmon by parasitic sea lice in british columbia, canada |
publisher |
NRC Research Press (a division of Canadian Science Publishing) |
publishDate |
2020 |
url |
http://hdl.handle.net/1807/103018 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2020-0160 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(-130.143,-130.143,54.160,54.160) ENVELOPE(-19.455,-19.455,65.656,65.656) ENVELOPE(-62.243,-62.243,56.619,56.619) |
geographic |
Canada Pacific British Columbia Sockeye Keta Fraser River |
geographic_facet |
Canada Pacific British Columbia Sockeye Keta Fraser River |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_relation |
0706-652X http://hdl.handle.net/1807/103018 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2020-0160 |
_version_ |
1766160625426235392 |