ca.cioos 24f1c230-6c37-470c-907d-25b9b022f5c2 Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist 2025-04-21T22:03:34.225Z revision 2023-03-13 publication ISO 19115-1 Geographic information - Metadata First Edition 2014-04-01 ISO 19115-2 Geographic information - Metadata Second Edition 2019-01 ISO 19115-1 Geographic Information - Metadata Amendment 1 2018-02 Canadian Integrated Ocean Observing System Metadata Profile of ISO 19115 2019-11-06 publication Differential infestation of juvenile Pacific salmon by parasitic sea lice in British Columbia, Canada Infestation différentielle du saumon du Pacifique juvénile par le pou du poisson parasitaire en Colombie-Britannique, Canada 2020-09-04 publication https://doi.org/10.5281/zenodo.4005400 University of Alberta Edmonton Canada brookson@ualberta.ca http://ualberta.ca/ WWW:LINK https://ror.org/0160cpw27 Brookson, Cole brookson@ualberta.ca University of Alberta Edmonton Canada brookson@ualberta.ca http://ualberta.ca/ WWW:LINK https://ror.org/0160cpw27 Brookson, Cole brookson@ualberta.ca University of Toronto Toronto Canada martin.krkosek@utoronto.ca http://www.utoronto.ca/ WWW:LINK https://ror.org/03dbr7087 Krkosek, Martin martin.krkosek@utoronto.ca University of Toronto Toronto Canada martin.krkosek@utoronto.ca http://www.utoronto.ca/ WWW:LINK https://ror.org/03dbr7087 Krkosek, Martin martin.krkosek@utoronto.ca University of British Columbia AERL, 2202 Main Mall Vancouver Canada https://www.ubc.ca/ WWW:LINK https://ror.org/03rmrcq20 Hunt, Brian b.hunt@oceans.ubc.ca https://orcid.org/0000-0003-4718-4962 Professor Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist Fisheries and Oceans Canada Ottawa Canada https://www.dfo-mpo.gc.ca WWW:LINK https://ror.org/02qa1x782 Rogers, Luke Dalhousie University Halifax Canada sean.godwin@gmail.com http://www.dal.ca/ WWW:LINK https://ror.org/01e6qks80 Godwin, Sean sean.godwin@gmail.com Dalhousie University Halifax Canada sean.godwin@gmail.com http://www.dal.ca/ WWW:LINK https://ror.org/01e6qks80 Godwin, Sean sean.godwin@gmail.com Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 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. Le saumon du Pacifique du fleuve Fraser a diminué ces dernières décennies, probablement en raison du parasitisme du pou du poisson (Caligus clemensi et Lepeophtheirus salmonis). Nous décrivons l'abondance des deux espèces de pou infestant le saumon rose juvénile co-migrant (Oncorhynchus gorbuscha), le saumon kéta (O. keta) et le saumon rouge (O. nerka) pendant cinq ans dans les îles Discovery et le détroit de Johnstone, en Colombie-Britannique. Le pou généraliste, C. clemensi, était 5, 7 et 39 fois plus abondant que le spécialiste des salmonidés, L. salmonis, sur le saumon rose, le saumon kéta et le saumon rouge, respectivement. L'abondance de Caligus clemensi était plus élevée chez les roses (0,45, IC à 95 % : 0,38-0,55) et le saumon rouge (0,39 IC à 95 % 32 0,33-0,47) que le kéna. L'abondance de L. salmonis était la plus élevée chez les roses (0,09, IC à 95 % = 0,06-0,15). Caligus clemensi avait une abondance plus élevée dans le détroit de Johnstone que dans les îles Discovery. Ces résultats suggèrent des différences dans la spécialisation des hôtes et la dynamique de transmission entre les espèces de pou. Étant donné que les deux poux infestent le saumon d'élevage, mais que seul C. clemensi infeste le hareng du Pacifique (Clupea pallasii), la science de la conservation et la gestion des poux et du saumon du fleuve Fraser devraient examiner davantage le C. clemensi et la transmission du saumon d'élevage et du hareng sauvage. oceans true -126.87477074 -124.30109865 49.80151064 50.66883255 0.0 9.0 5831 EPSG 2012-08-10 EPSG::5831 - Instantaneous Water Level depth - Depth relative to instantaneous water level uncorrected for tide. Not specific to any location or epoch. vertical asNeeded Generated from https://hakaiinstitute.github.io/hakai-metadata-entry-form#/en/hakai/qbqh6DF00XZq8MOpQ3kKkI9GUv43/-MTZDeElXT3dpUFNlOGQ Oceans Government of Canada Core Subject Thesaurus 2016-10-13 N/A sea lice salmon aquaculture other parasites default other Autre eov Animalia Chordata Salmoniformes Salmonidae Oncorhynchus Animalia Chordata Salmoniformes Salmonidae Oncorhynchus taxa Juvenile Salmon Program project Creative Commons Attribution 4.0 Attribution CC-BY-4.0 https://creativecommons.org/licenses/by/4.0 WWW:LINK Canadian Journal of Fisheries and Aquatic Sciences Article Article de la Revue canadienne des sciences halieutiques et aquatiques DOI https://doi.org/10.1139/cjfas-2020-0160 Hakai Institute Campbell River Canada https://www.hakai.org/ WWW:LINK https://ror.org/02pry0c91 Johnson, Brett brett.johnson@hakai.org https://orcid.org/0000-0001-9317-0364 Scientific Data Specialist https://doi.org/10.5281/zenodo.4005400 WWW:LINK Raw data, processed data and code asNeeded