Skip to content
naulon

No retraction, correction or concern found when last checked on Nov 2, 2026.

Salmon lice – impact on wild salmonids and salmon aquaculture

O Torrissen, S Jones, F Asche and 5 more

Journal of Fish Diseases · 2013 · Review

doi:10.1111/jfd.12061

Abstract

Salmon lice, L epeophtheirus salmonis , are naturally occurring parasites of salmon in sea water. Intensive salmon farming provides better conditions for parasite growth and transmission compared with natural conditions, creating problems for both the salmon farming industry and, under certain conditions, wild salmonids. Salmon lice originating from farms negatively impact wild stocks of salmonids, although the extent of the impact is a matter of debate. Estimates from Ireland and Norway indicate an odds ratio of 1.1:1‐1.2:1 for sea lice treated Atlantic salmon smolt to survive sea migration compared to untreated smolts. This is considered to have a moderate population regulatory effect. The development of resistance against drugs most commonly used to treat salmon lice is a serious concern for both wild and farmed fish. Several large initiatives have been taken to encourage the development of new strategies, such as vaccines and novel drugs, for the treatment or removal of salmon lice from farmed fish. The newly sequenced salmon louse genome will be an important tool in this work. The use of cleaner fish has emerged as a robust method for controlling salmon lice, and aquaculture production of wrasse is important towards this aim. Salmon lice have large economic consequences for the salmon industry, both as direct costs for the prevention and treatment, but also indirectly through negative public opinion.

Shown for reading. Its publisher allows quoting it, not republishing it.

References 185

  1. 1.

    Aarseth KA, Schram TA. Wavelength-specific behaviour in Lepeophtheirus salmonis and Calanus finmarchicus to ultraviolet and visible light in laboratory experiments (Crustacea: Copepoda). Marine Ecology-Progress Series. 1999;186:211-217.

    Not in our library

  2. 2.

    Almazan C, Blas-Machado U, Kocan KM, Yoshioka JH, Blouin EF, Mangold AJ, De Fuente La J. Characterization of three Ixodes scapularis cDNAs protective against tick infestations. Vaccine. 2005;23:4403-4416.

    Not in our library10.1016/j.vaccine.2005.04.012

  3. 3.

    Alvial A, Forster J, Kibenge FSB, Burgos JM, Ibarra R. The recovery of the Chilean salmon industry. 2011.

    Not in our library

  4. 4.

    Amundrud TL, Murray AG. Modelling sea lice dispersion under varying environmental forcing in a Scottish sea loch. Journal of Fish Diseases. 2009;32:27-44.

    Not in our library10.1111/j.1365-2761.2008.00980.x

  5. 5.

    Anderson RM, May RM. Infectious Diseases of Humans: Dynamics and Control. 1991.

    Not in our library

  6. 6.

    Status for norske laksebestander (The Status for Norwegian Salmon Populations). 2011;285.

    Not in our library

  7. 7.

    Lovende resultat med rognkjeks (Promising results with lumpfish). Nytt fra Havbruk. 2012;1.

    Not in our library

  8. 8.

    Asche F, Guttormsen AG, Sebulonsen T, Sissener EH. Competition between farmed and wild salmon: the Japanese salmon market. Agricultural Economics. 2005;33:333-340.

    Not in our library

  9. 9.

    Asche F. Farming the Sea. Marine Resource Economics. 2008;23:527-547.

    Not in our library

  10. 10.

    Asche F, Bjørndal T. The Economics of Salmon Aquaculture. 2011.

    Not in our library

  11. 11.

    Asche F, Guttormsen AG, Tveterås R. Environmental problems, productivity and innovations in Norwegian aalmon aquaculture. Aquaculture Economics & Management. 1999;3:19-29.

    Not in our library

  12. 12.

    Bailey RJE, Birkett MA, Ingvarsdottir A, Mordue AJ, Mordue W, O'shea B, Pickett JA, Wadhams LJ. The role of semiochemicals in host location and non-host avoidance by salmon louse (Lepeophtheirus salmonis) copepodids. Canadian Journal of Fisheries and Aquatic Sciences. 2006;63:448-456.

    Not in our library

  13. 13.

    Bakke TA, Harris PD. Diseases and parasites in wild Atlantic salmon (Salmo salar) populations. Canadian Journal of Fisheries and Aquatic Sciences. 1998;55:247-266.

    Not in our library

  14. 14.

    Beamish RJ, Neville CM, Sweeting RM, Ambers N. Sea lice on adult Pacific salmon in the coastal waters of Central British Columbia, Canada. Fisheries Research. 2005;76:198-208.

    Not in our library

  15. 15.

    Berg AGT, Horsberg TE. Plasma concentrations of emamectin benzoate after Slice (TM) treatments of Atlantic salmon (Salmo salar): differences between fish, cages, sites and seasons. Aquaculture. 2009;288:22-26.

    Not in our library

  16. 16.

    Berland B, Boxshall GA, Defaye D. Salmon lice on wild salmon (Salmo salar L.) in western Norway. Pathogens of Wild and Farmed Fish: Sea Lice. 1993;179-187.

    Not in our library

  17. 17.

    Berland B, Margolis L. The early history of ‘Lakselus’ and some nomenclatural questions relating to copepod parasites of salmon. Sarsia. 1983;68:281-288.

    Not in our library

  18. 18.

    Bjelland R, Løkke J, Simensen L, Kvenseth PG, Sayer MDJ, Treasurer JW, Costello MJ. Successful survival of wrasse through winter in submersible netcages in a fjord in western Norway. Wrasse: Biology and Use in Aquaculture. 1996;265-271.

    Not in our library

  19. 19.

    Bjordal Å. Cleaning Symbiosis between Wrasses (Labridae) and Lice Infested Salmon (Salmo salar) in Mariculture. 1988a.

    Not in our library

  20. 20.

    Bjordal Å. Rense fisk mot lakselus (Cleanerfish against sea lice). Norsk Fiskeoppdrett. 1988b;37.

    Not in our library

  21. 21.

    Bjordal Å. Sea lice infestation on farmed salmon: possible use of cleaner-fish as an alternative method for de-lousing. Canadian Technical Reports of Fisheries and Aquatic Sciences. 1990;1761:85-89.

    Not in our library

  22. 22.

    Bjørn PA, Finstad B, Asplin L, Skilbrei OT, Nilsen R, Llinares RMS, Boxaspen KK. Metodeutvikling for overvåking og telling av lakselus på viltlevende laksefisk (Development of Methods for Surveillance of Salmon lice Infestation on Wild Salmonids). Rapport fra Havforskningsinstituttet. 2011;92.

    Not in our library

  23. 23.

    Blom G. Fiskeristatistikk for leppefisk – 1998–2010 (Fishery Statistics for Wrasses – (1998–2010). 2010.

    Not in our library

  24. 24.

    Brandal PO, Egidius E. Preliminary report on oral treatment against salmon lice, Lepeophtheirus salmonis, with Neguvon. Aquaculture. 1977;10:177-178.

    Not in our library

  25. 25.

    Brandal PO, Egidius E. Treatment of salmon lice (Lepeophtheirus salmonis Krøyer, 1838) with Neguvon® — description of method and equipment. Aquaculture. 1979;18:183-188.

    Not in our library

  26. 26.

    Brandal PO, Egidius E, Romslo I. Host blood: a major food component for the parasitic copepod Lepeophtheirus salmonis, Kroyeri, 1838 (Crustacea: Caligidae). Norwegian Journal of Zoology. 1976;24:341-343.

    Not in our library

  27. 27.

    Branson EJ, Ronsberg SS, Ritchie G. Efficacy of teflubenzuron (Calicide((R))) for the treatment of sea lice, Lepeophtheirus salmonis (Kroyer 1838), infestations of farmed Atlantic salmon (Salmo salar L.). Aquaculture Research. 2000;31:861-867.

    Not in our library

  28. 28.

    Bravo S, Sevatdal S, Horsberg TE. Sensitivity assessment of Caligus rogercresseyi to emamectin benzoate in Chile. Aquaculture. 2008;282:7-12.

    Not in our library

  29. 29.

    Bricknell IR, Dalesman SJ, O'shea B, Pert CC, Luntz AJM. Effect of environmental salinity on sea lice Lepeophtheirus salmonis settlement success. Diseases of Aquatic Organisms. 2006;71:201-212.

    Not in our library10.3354/dao071201

  30. 30.

    Bron JE, Sommerville C, Rae GH, Boxshall GA, Defaye D. Aspects of the behaviour of copepodid larvae of the salmon louse Lepeophtheirus salmonis (Krøyer, 1837). Pathogens of Wild and Farmed Fish: Sea Lice. 1993;125-142.

    Not in our library

  31. 31.

    Brooks KM, Jones SRM. Perspectives on pink salmon and sea lice: scientific evidence fails to support the extinction hypothesis. Reviews in Fisheries Science. 2008;16:403-412.

    Not in our library

  32. 32.

    Butler JRA. Wild salmonids and sea louse infestations on the west coast of Scotland: sources of infection and implications for the management of marine salmon farms. Pest Management Science. 2002;58:595-608.

    Not in our library10.1002/ps.490

  33. 33.

    Carpio Y, Basabe L, Acosta J, Rodriguez A, Mendoza A, Lisperger A, Zamorano E, Gonzalez M, Rivas M, Contreras S, Haussmann D, Figueroa J, Osorio VN, Asencio G, Mancilla J, Ritchie G, Borroto C, Estrada MP. Novel gene isolated from Caligus rogercresseyi: a promising target for vaccine development against sea lice. Vaccine. 2011;29:2810-2820.

    Not in our library10.1016/j.vaccine.2011.01.109

  34. 34.

    Committee IA. Report of the ICES Advisory Committee, 2011. 2011.

    Not in our library

  35. 35.

    Copley L, Tierney TD, Kane F, Naughton O, Kennedy S, O'Donohoe P, Jackson D, McGrath D. Sea lice, Lepeophtheirus salmonis and Caligus elongatus, levels on salmon returning to the west coast of Ireland, 2003. Journal of the Marine Biological Association of the United Kingdom. 2005;85:87-92.

    Not in our library

  36. 36.

    Costello MJ. The global economic cost of sea lice to the salmonid farming industry. Journal of Fish Diseases. 2009;32:115-118.

    Not in our library10.1111/j.1365-2761.2008.01011.x

  37. 37.

    Costello MJ, Burridge L, Chang B, Robichaud L. Sea Lice 2003 – Proceedings of the sixth international conference on sea lice biology and control. Aquaculture Research. 2004;35:711-712.

    Not in our library

  38. 38.

    Costelloe M, Costelloe J, Coghlan N, O'Donohoe G, O'connor B. Distribution of the larval stages of Lepeophtheirus salmonis in three bays on the west coast of Ireland. ICES Journal of Marine Science. 1998;55:181-187.

    Not in our library

  39. 39.

    Dalvin S, Frost P, Biering E, Hamre LA, Eichner C, Krossoy B, Nilsen F. Functional characterisation of the maternal yolk-associated protein (LsYAP) utilising systemic RNA interference in the salmon louse (Lepeophtheirus salmonis) (Crustacea: Copepoda). International Journal for Parasitology. 2009;39:1407-1415.

    Not in our library10.1016/j.ijpara.2009.04.004

  40. 40.

    Denholm I, Devine GJ, Horsberg TE, Sevatdal S, Fallang A, Nolan DV, Powell R. Analysis and management of resistance to chemotherapeutants in salmon lice, Lepeophtheirus salmonis (Copepoda: Caligidae). Pest Management Science. 2002;58:528-536.

    Not in our library10.1002/ps.482

All 185 references

Cited by papers we hold 4

Reads

Read by people on this page

None yet.

Checked or read by AI through naulon

None yet.

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.

Are you an author?

Is this your paper?

Claim it to add your note and be paid when agents cite it. Free.