WoRMS taxon details
Caligus clemensi Parker & Margolis, 1964
349592 (urn:lsid:marinespecies.org:taxname:349592)
accepted
Species
marine, brackish, fresh, terrestrial
Parker, R.R. & L. Margolis. (1964). A new species of parasitic copepod, Caligus clemensi sp. nov. (Caligoida, Caligidae) from pelagic fishes in the coastal waters of British Columbia. Journal of the Fisheries Research Board of Canada 21(5):873-889, figs. 1-12., available online at https://doi.org/10.1139/f64-085 [details] Available for editors 
[request]
[request]
Walter, T.C.; Boxshall, G. (2026). World of Copepods Database. Caligus clemensi Parker & Margolis, 1964. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=349592 on 2026-05-16
Date
action
by
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
Parker, R.R. & L. Margolis. (1964). A new species of parasitic copepod, Caligus clemensi sp. nov. (Caligoida, Caligidae) from pelagic fishes in the coastal waters of British Columbia. Journal of the Fisheries Research Board of Canada 21(5):873-889, figs. 1-12., available online at https://doi.org/10.1139/f64-085 [details] Available for editors [request]
[request]Other
additional source
Saksida, S., J. Constantine, G.A. Karreman & A. Donald. (2007). Evaluation of sea lice abundance levels on farmed Atlantic salmon (Salmo salar L.) located in the Broughton Archipelago of British Columbia from 2003 to 2005. <em>Aquaculture Research.</em> 38(3):219-231., available online at https://doi.org/10.1111/j.1365-2109.2007.01651.x [details]
additional source Beamish, R., J. Wade, W. Pennell, E. Gordon, S. Jones, C. Neville, K. Lange & R. Sweeting. (2009). A large, natural infection of sea lice on juvenile Pacific salmon in the Gulf Islands area of British Columbia, Canada. Aquaculture 297(1-4):31-37., available online at https://doi.org/10.1016/j.aquaculture.2009.09.001 [details]
additional source Patanasatienkul, T., J. Sanchez, E.E. Rees, D. Pfeiffer & C.W. Revie (2015). Space-time cluster analysis of sea lice infestation (Caligus clemensi and Lepeophtheirus salmonis) on wild juvenile Pacific salmon in the Broughton Archipelago of Canada. <i>Preventive Veterinary Medicine</i>. 120(2):219-231., available online at https://doi.org/10.1016/j.prevetmed.2015.03.006 [details]
additional source Byrne, A.A., C.M. Pearce, S.F. Cross, S.R.M. Jones, S.M.C. Robinson, M.J. Hutchinson, M.R. Miller, C.A. Haddad & D.L. Johnson. (2018). Planktonic and parasitic stages of sea lice (Lepeophtheirus salmonis and Caligus clemensi) at a commercial Atlantic salmon (Salmo salar) farm in British Columbia, Canada. <em>Aquaculture.</em> 486:130-138., available online at https://doi.org/10.1016/j.aquaculture.2017.12.009 [details] Available for editors [request]
additional source Godwin, S.C., M. Krkosek, J.D. Reynolds, L.A. Rogers & L.M. Dill. (2018). Heavy sea louse infection is associated with decreased stomach fullness in wild juvenile sockeye salmon. Canadian Journal Of Fisheries And Aquatic Sciences, 75(10):1587-1595., available online at https://doi.org/10.1139/cjfas-2017-0267 [details] Available for editors [request]
additional source Hemmingsen, W., K. MacKenzie, K. Sagerup, M. Remen, K. Bloch-Hansen & A.K.D. Imsland. (2020). Caligus elongatus and other sea lice of the genus Caligus as parasites of farmed salmonids: A review. <em>Aquaculture.</em> 522:1-12. 735160 MAY 2020., available online at https://doi.org/10.1016/j.aquaculture.2020.735160 [details] Available for editors [request]
additional source Yahaya, Z.S., M.N.S. Azizah, L. Alkazmi, R. Ravi & O.B. Awosolu. (2022). First Molecular Identification of Caligus clemensi on Cultured Crimson Snapper Lutjanus rythropterus on Jerejak Island, Penang, Peninsular Malaysia. <em>Pathogens.</em> 11:1-11., available online at https://doi.org/10.3390/pathogens11020188 [details] Available for editors [request]
additional source Chang, T.Y., B.P.V. Hunt, J. Hirai & C.A. Suttle. (2023). Divergent RNA viruses infecting sea lice, major ectoparasites of fish. <em>Plos Pathogens.</em> 19(6):1-25. e1011386. Jun 2023., available online at https://doi.org/10.1093/iob/obad019 [details] Available for editors [request]
additional source Páez, D.J., J.L. Gregg, A.H. Mackenzie, S.A. Hall & P.K. Hershberger. (2023). Characteristics of a sea louse (Caligus clemensi) epizootic in wild Pacific herring (Clupea pallasii). <em>Canadian Journal Of Fisheries And Aquatic Sciences.</em> 80(11):1-10., available online at https://doi.org/10.1139/cjfas-2023-0070 [details] Available for editors [request]
additional source Hamada, A.H., M.M. Attia, M.S. Marzouk, R.M.S. Korany, M.Y. Elgendy & M. Abdelsalam. (2024). Co-infection with Caligus clemensi and Vibrio Parahaemolyticus in Egyptian Farmed Mullets: Diagnosis, Histopathology, and Therapeutic Management. <em>Egyptian Journal of Veterinary Science.</em> 56(2):353-368., available online at https://doi.org/10.21608/EJVS.2024.272080.1871 [details] Available for editors [request]
additional source Abdelsalam, M., M.M. Attia, M.S. Marzouk, R.M.S. Korany, M.Y. Elgendy, A.W. Soliman, A. Prince & A.H. Hamada. (2024). Investigating dynamics, etiology, pathology, and therapeutic interventions of Caligus clemensi and Vibrio alginolyticus co-infection in farmed marine fish. <em>Scientific Reports.</em> 14(1): 1-18. Sep 2024., available online at https://doi.org/10.1038/s41598-024-70528-x [details] Available for editors [request]
additional source Abdelsalam, M., A.W. Soliman, A.H. Hamada, A, Fadel, R.M.S. Korany & M.M. Attia. (2025). Seasonal dynamics of Caligus clemensi Infestation in European Seabass and flathead grey mullet Integrating morphological, molecular, immunological, and environmental perspectives. <em>Microbial Pathogenesis.</em> 199: 107187. Feb 2025., available online at https://doi.org/10.1016/j.micpath.2024.107187 [details]
additional source Abdelkalek, N., R.A. EL Maged, H. Ali & N. Satour. (2021). Identification of Caligus parasites infesting Morone labrax and its impact on fish health status and pathological alteration. <em>Mansoura Veterinary Medical Journal.</em> 22(1):7-12., available online at https://doi.org/10.35943/mvmj.2021.56334.1023 [details] Available for editors [request]
additional source Attia, M.M., M. Abdelsalam, H.I. Mohamed, A. Shadidizaji, A.W. Soliman & M. Warda. (2025). Punica granatum extract demonstrates antiparasitic effects against Caligus clemensi through in silico and in vitro studies. <em>Scientific Reports.</em> 15(1):1-18. Oct 2025., available online at https://doi.org/10.1038/s41598-025-19529-y [details] Available for editors [request]
additional source Jones, S.R.M., C.W. Revie & L. Stewardson. (2025). Trends in sea lice infestations on chum and pink salmon in the Broughton Archipelago remain unchanged despite removal of finfish aquaculture. <em>Diseases Of Aquatic Organisms.</em> 163:107-112. Aug 2025., available online at https://doi.org/10.3354/dao03866 [details] Available for editors [request]
additional source Morales-Serna, F.N., I.R. de la Cruz, A. García-Gasca, M. Betancourt-Lozano, J. Briones-Mendoza, J. Pinto-Gualpa, L.A. Yañez-Guerra & V.H. Caña-Bozada. (2026). Diversity of ligand-gated ion channels in free-living and parasitic copepods (Crustacea). <em>Comparative Biochemistry And Physiology D-Genomics & Proteomics.</em> 58: 1-15. 101741. Jun 2026., available online at https://doi.org/10.1016/j.cbd.2025.101741 [details] Available for editors [request]
additional source Revie, C.W., T. Patanasatienkul, G. McEwan & L. Stewardson. 2025. Sea lice infestation dataset for wild and farmed salmon populations on the Pacific coast of Canada (2001–2023). <em>Scientific Data.</em> 12:1-11., available online at https://doi.org/10.1038/s41597-025-05653-x [details] Available for editors [request]
additional source Jones, S.R.M., C.W. Revie & L. Stewardson. (2025). Trends in Abundance of Sea Lice Lepeophtheirus salmonis and Caligus clemensi on Juvenile Wild Pacific Salmon Unchanged Following Cessation of Salmon Aquaculture in Coastal British Columbia. <em>Journal of Fish Diseases.</em> 48(10):1-4. e14136., available online at https://doi.org/10.1111/jfd.14136 [details] Available for editors [request]
additional source Krkosek, M., A.W. Bateman, A.L. Bass, W.S. Bugg, B.M. Connors, C.M. Deeg, E. Di Cicco, S. Godwin, J. Grimm, L. Krichel, G. Mordecai, A. Morton, S. Peacock, D. Shea, B. Riddell & K.M. Miller. (2024). Pathogens from salmon aquaculture in relation to conservation of wild Pacific salmon in Canada. <em>Science Advances.</em> 10:18 pp. eadn7118., available online at https://doi.org/10.1126/sciadv.adn7118 [details] Available for editors [request]
additional source Butterworth, K.G., J.D. Ronquillo & R.S. McKinley. (2005). Simplified illustrated sea lice identification guide for Lepeophtheirus salmonis and Caligus clemensi in British Columbia, Canada. Aquaculture Association of Canada Special Publication 9: 101-103. [details] Available for editors [request]
additional source Galbraith, M.D. (2005). Identification of larval stages of Caligus clemensi and Lepeophtheirus salmonis from the Broughton Archipelago. Canadian Technical Report of Fisheries and Aquatic Sciences 548: 1-21. [details] Available for editors [request]
additional source Gusev, A.V. (1987). Class Crustacea Lamarck, 1801. <em>In: Bauer, O.N. (ed.). Opredelitel' parazitov presnovodnykh ryb SSSR. [Key to the Parasites of Freshwater Fishes of the USSR.] Opredeliteli po Faune SSSR, Zoologicheskii Instituta SSSR. Nauka, Leningrad.</em> 3(149):378-432. [details] Available for editors [request]
additional source Jones, S.R.M., G. Prosperi-Porta, E. Kim, P. Callow & N.B. Hargreaves. (2006). The occurrence of Lepeophtheirus salmonis and Caligus clemensi (Copepoda: Caligidae) on three-spine stickleback Gasterosteus aculeatus in coastal British Columbia. Journal of Parasitology 92(3):473-440., available online at https://doi.org/10.1645/ge-685r1.1 [details] Available for editors [request]
additional source Kabata, Z. (1972). Developmental stages of Caligus clemensi (Copepoda: Caligidae). Journal of the Fisheries Research Board of Canada 29(11):1571-1593, figs. 1-106., available online at https://doi.org/10.1139/f72-245 [details] Available for editors [request]
additional source Beamish, R., J. Wade, W. Pennell, E. Gordon, S. Jones, C. Neville, K. Lange & R. Sweeting. (2009). A large, natural infection of sea lice on juvenile Pacific salmon in the Gulf Islands area of British Columbia, Canada. Aquaculture 297(1-4):31-37., available online at https://doi.org/10.1016/j.aquaculture.2009.09.001 [details]
additional source Patanasatienkul, T., J. Sanchez, E.E. Rees, D. Pfeiffer & C.W. Revie (2015). Space-time cluster analysis of sea lice infestation (Caligus clemensi and Lepeophtheirus salmonis) on wild juvenile Pacific salmon in the Broughton Archipelago of Canada. <i>Preventive Veterinary Medicine</i>. 120(2):219-231., available online at https://doi.org/10.1016/j.prevetmed.2015.03.006 [details]
additional source Byrne, A.A., C.M. Pearce, S.F. Cross, S.R.M. Jones, S.M.C. Robinson, M.J. Hutchinson, M.R. Miller, C.A. Haddad & D.L. Johnson. (2018). Planktonic and parasitic stages of sea lice (Lepeophtheirus salmonis and Caligus clemensi) at a commercial Atlantic salmon (Salmo salar) farm in British Columbia, Canada. <em>Aquaculture.</em> 486:130-138., available online at https://doi.org/10.1016/j.aquaculture.2017.12.009 [details] Available for editors
[request]additional source Godwin, S.C., M. Krkosek, J.D. Reynolds, L.A. Rogers & L.M. Dill. (2018). Heavy sea louse infection is associated with decreased stomach fullness in wild juvenile sockeye salmon. Canadian Journal Of Fisheries And Aquatic Sciences, 75(10):1587-1595., available online at https://doi.org/10.1139/cjfas-2017-0267 [details] Available for editors
[request]additional source Hemmingsen, W., K. MacKenzie, K. Sagerup, M. Remen, K. Bloch-Hansen & A.K.D. Imsland. (2020). Caligus elongatus and other sea lice of the genus Caligus as parasites of farmed salmonids: A review. <em>Aquaculture.</em> 522:1-12. 735160 MAY 2020., available online at https://doi.org/10.1016/j.aquaculture.2020.735160 [details] Available for editors
[request]additional source Yahaya, Z.S., M.N.S. Azizah, L. Alkazmi, R. Ravi & O.B. Awosolu. (2022). First Molecular Identification of Caligus clemensi on Cultured Crimson Snapper Lutjanus rythropterus on Jerejak Island, Penang, Peninsular Malaysia. <em>Pathogens.</em> 11:1-11., available online at https://doi.org/10.3390/pathogens11020188 [details] Available for editors
[request]additional source Chang, T.Y., B.P.V. Hunt, J. Hirai & C.A. Suttle. (2023). Divergent RNA viruses infecting sea lice, major ectoparasites of fish. <em>Plos Pathogens.</em> 19(6):1-25. e1011386. Jun 2023., available online at https://doi.org/10.1093/iob/obad019 [details] Available for editors
[request]additional source Páez, D.J., J.L. Gregg, A.H. Mackenzie, S.A. Hall & P.K. Hershberger. (2023). Characteristics of a sea louse (Caligus clemensi) epizootic in wild Pacific herring (Clupea pallasii). <em>Canadian Journal Of Fisheries And Aquatic Sciences.</em> 80(11):1-10., available online at https://doi.org/10.1139/cjfas-2023-0070 [details] Available for editors
[request]additional source Hamada, A.H., M.M. Attia, M.S. Marzouk, R.M.S. Korany, M.Y. Elgendy & M. Abdelsalam. (2024). Co-infection with Caligus clemensi and Vibrio Parahaemolyticus in Egyptian Farmed Mullets: Diagnosis, Histopathology, and Therapeutic Management. <em>Egyptian Journal of Veterinary Science.</em> 56(2):353-368., available online at https://doi.org/10.21608/EJVS.2024.272080.1871 [details] Available for editors
[request]additional source Abdelsalam, M., M.M. Attia, M.S. Marzouk, R.M.S. Korany, M.Y. Elgendy, A.W. Soliman, A. Prince & A.H. Hamada. (2024). Investigating dynamics, etiology, pathology, and therapeutic interventions of Caligus clemensi and Vibrio alginolyticus co-infection in farmed marine fish. <em>Scientific Reports.</em> 14(1): 1-18. Sep 2024., available online at https://doi.org/10.1038/s41598-024-70528-x [details] Available for editors
[request]additional source Abdelsalam, M., A.W. Soliman, A.H. Hamada, A, Fadel, R.M.S. Korany & M.M. Attia. (2025). Seasonal dynamics of Caligus clemensi Infestation in European Seabass and flathead grey mullet Integrating morphological, molecular, immunological, and environmental perspectives. <em>Microbial Pathogenesis.</em> 199: 107187. Feb 2025., available online at https://doi.org/10.1016/j.micpath.2024.107187 [details]
additional source Abdelkalek, N., R.A. EL Maged, H. Ali & N. Satour. (2021). Identification of Caligus parasites infesting Morone labrax and its impact on fish health status and pathological alteration. <em>Mansoura Veterinary Medical Journal.</em> 22(1):7-12., available online at https://doi.org/10.35943/mvmj.2021.56334.1023 [details] Available for editors
[request]additional source Attia, M.M., M. Abdelsalam, H.I. Mohamed, A. Shadidizaji, A.W. Soliman & M. Warda. (2025). Punica granatum extract demonstrates antiparasitic effects against Caligus clemensi through in silico and in vitro studies. <em>Scientific Reports.</em> 15(1):1-18. Oct 2025., available online at https://doi.org/10.1038/s41598-025-19529-y [details] Available for editors
[request]additional source Jones, S.R.M., C.W. Revie & L. Stewardson. (2025). Trends in sea lice infestations on chum and pink salmon in the Broughton Archipelago remain unchanged despite removal of finfish aquaculture. <em>Diseases Of Aquatic Organisms.</em> 163:107-112. Aug 2025., available online at https://doi.org/10.3354/dao03866 [details] Available for editors
[request]additional source Morales-Serna, F.N., I.R. de la Cruz, A. García-Gasca, M. Betancourt-Lozano, J. Briones-Mendoza, J. Pinto-Gualpa, L.A. Yañez-Guerra & V.H. Caña-Bozada. (2026). Diversity of ligand-gated ion channels in free-living and parasitic copepods (Crustacea). <em>Comparative Biochemistry And Physiology D-Genomics & Proteomics.</em> 58: 1-15. 101741. Jun 2026., available online at https://doi.org/10.1016/j.cbd.2025.101741 [details] Available for editors
[request]additional source Revie, C.W., T. Patanasatienkul, G. McEwan & L. Stewardson. 2025. Sea lice infestation dataset for wild and farmed salmon populations on the Pacific coast of Canada (2001–2023). <em>Scientific Data.</em> 12:1-11., available online at https://doi.org/10.1038/s41597-025-05653-x [details] Available for editors
[request]additional source Jones, S.R.M., C.W. Revie & L. Stewardson. (2025). Trends in Abundance of Sea Lice Lepeophtheirus salmonis and Caligus clemensi on Juvenile Wild Pacific Salmon Unchanged Following Cessation of Salmon Aquaculture in Coastal British Columbia. <em>Journal of Fish Diseases.</em> 48(10):1-4. e14136., available online at https://doi.org/10.1111/jfd.14136 [details] Available for editors
[request]additional source Krkosek, M., A.W. Bateman, A.L. Bass, W.S. Bugg, B.M. Connors, C.M. Deeg, E. Di Cicco, S. Godwin, J. Grimm, L. Krichel, G. Mordecai, A. Morton, S. Peacock, D. Shea, B. Riddell & K.M. Miller. (2024). Pathogens from salmon aquaculture in relation to conservation of wild Pacific salmon in Canada. <em>Science Advances.</em> 10:18 pp. eadn7118., available online at https://doi.org/10.1126/sciadv.adn7118 [details] Available for editors
[request]additional source Butterworth, K.G., J.D. Ronquillo & R.S. McKinley. (2005). Simplified illustrated sea lice identification guide for Lepeophtheirus salmonis and Caligus clemensi in British Columbia, Canada. Aquaculture Association of Canada Special Publication 9: 101-103. [details] Available for editors
[request]additional source Galbraith, M.D. (2005). Identification of larval stages of Caligus clemensi and Lepeophtheirus salmonis from the Broughton Archipelago. Canadian Technical Report of Fisheries and Aquatic Sciences 548: 1-21. [details] Available for editors
[request]additional source Gusev, A.V. (1987). Class Crustacea Lamarck, 1801. <em>In: Bauer, O.N. (ed.). Opredelitel' parazitov presnovodnykh ryb SSSR. [Key to the Parasites of Freshwater Fishes of the USSR.] Opredeliteli po Faune SSSR, Zoologicheskii Instituta SSSR. Nauka, Leningrad.</em> 3(149):378-432. [details] Available for editors
[request]additional source Jones, S.R.M., G. Prosperi-Porta, E. Kim, P. Callow & N.B. Hargreaves. (2006). The occurrence of Lepeophtheirus salmonis and Caligus clemensi (Copepoda: Caligidae) on three-spine stickleback Gasterosteus aculeatus in coastal British Columbia. Journal of Parasitology 92(3):473-440., available online at https://doi.org/10.1645/ge-685r1.1 [details] Available for editors
[request]additional source Kabata, Z. (1972). Developmental stages of Caligus clemensi (Copepoda: Caligidae). Journal of the Fisheries Research Board of Canada 29(11):1571-1593, figs. 1-106., available online at https://doi.org/10.1139/f72-245 [details] Available for editors
[request]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
To Barcode of Life (8 barcodes)
To Biodiversity Heritage Library (4 publications)
To European Nucleotide Archive, ENA (Caligus clemensi)
To GenBank (16046 nucleotides; 1235 proteins)
To USNM Invertebrate Zoology Arthropoda Collection (5 records)
To ITIS
To Biodiversity Heritage Library (4 publications)
To European Nucleotide Archive, ENA (Caligus clemensi)
To GenBank (16046 nucleotides; 1235 proteins)
To USNM Invertebrate Zoology Arthropoda Collection (5 records)
To ITIS
From editor or global species database
