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Occurrence of Salmincola sp. on brook charr Salvelinus fontinalis in Lake Superior

  • Evan C. BooneEmail author
  • Henry R. Quinlan
CHARR III
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Abstract

Salmincola sp. infect fishes of the family Salmonidae and can negatively affect host health. The parasite–host relationship was examined between Salmincola sp. and a remnant population of brook charr on Isle Royale, Lake Superior. A total of 573 brook charr were collected using boat-mounted electrofishing and angling from 2005 to 2017. Macroscopic examination revealed copepod (Salmincola sp.) infections on gills and fins. Field identifications were confirmed for a subsample of parasites in the laboratory. The preferred attachment location was on the gills, with infections on fins being rare and likely a spillover from large infections in the primary location. Host size was a significant predictor of Salmincola prevalence and parasite load. The distribution of lice within the Tobin Harbor brook charr population was atypical of parasite distributions, because few hosts were uninfected. Gill tissue damage was present in heavily infected fish, but host condition did not vary among Salmincola classifications. The Tobin Harbor brook charr population is highly susceptible to Salmincola infections and infestations are reaching levels that could be influencing host health and future population growth and sustainability.

Keywords

Gill lice Gill maggots Lake Superior Parasitic copepods 

Notes

Acknowledgements

We thank the many individuals that contributed to field work from the U. S. Fish and Wildlife Service Ashland Fish and Wildlife Conservation Office, Jay Glase of National Park Service, Seth Moore and E.J. Isaac of Grand Portage Band of Lake Superior Chippewa, George Madison of Michigan Department of Natural Resources, and volunteers Cyndi Glase and Bill Heart. We also thank Mark Romanski and many other individuals from Isle Royale National Park for logistic assistance over many years. The findings and conclusions in this article are those of the authors and do not necessarily represent the views of the U.S. Fish and Wildlife Service.

References

  1. Amundsen, P.-A., R. Kristoffersen, R. Knudsen & A. Klemetsen, 1997. Infection of Salmincola edwardsii (Copepoda: Lernaeopodidae) in an age-structured population of Arctic Charr – a long-term study. Journal of Fish Biology 51: 1033–1046.Google Scholar
  2. Austin, J. A. & S. M. Colman, 2007. Lake Superior summer water temperatures are increasing more rapidly than regional air temperatures: a positive ice-albedo feedback. Geophysical Research Letters 34: L06604.  https://doi.org/10.1029/2006GL029021.CrossRefGoogle Scholar
  3. Barndt, S. & J. Stone, 2003. Infestation of Salmincola californiensis (Copepoda: Lernaeopodidae) in wild coho salmon, steelhead, and coastal cutthroat trout juveniles in a small Columbia River tributary. Transactions of the American Fisheries Society 132: 1027–1032.CrossRefGoogle Scholar
  4. Black, G. A., 1982. Gills as an attachment site for Salmincola edwardsii (Copepoda: Lernaeopodidae). Journal of Parasitology 68: 1172–1173.CrossRefGoogle Scholar
  5. Black, G. A., W. L. Montgomery & F. G. Whoriskey, 1983. Abundance and distribution of Salmincola edwardsii (Copepoda) on anadromous brook trout, Salvelinus fontinalis (Mitchill), in the Moisie River system, Quebec. Journal of Fish Biology 22: 567–575.CrossRefGoogle Scholar
  6. Bowen, C. A. & R. M. Stedman, 1990. Host–parasite relationships and geographic distribution of Salmincola corpulentus (Copepoda: Lernaeopodidae) on bloater (Coregonus hoyi) stocks in Lake Huron. Canadian Journal of Zoology 68: 1988–1994.CrossRefGoogle Scholar
  7. Hargis, L. N., J. M. Lepak, E. M. Vigil & C. Gunn, 2014. Prevalence and intensity of the parasitic copepod (Salmincola californiensis) on kokanee salmon (Oncorhynchus nerka) in a reservoir in Colorado. The Southwestern Naturalist 59: 126–129.CrossRefGoogle Scholar
  8. Hoffman, G. L., 1999. Parasites of North American freshwater fishes. Cornell University Press, Ithaca: 539.Google Scholar
  9. Huckins, C. J., E. A. Baker, K. D. Fausch & J. B. K. Leonard, 2008. Ecology and life history of coaster brook trout and potential bottlenecks in their rehabilitation. North American Journal of Fisheries Management 28: 1321–1342.CrossRefGoogle Scholar
  10. Hyatt, M. H. & W. A. Hubert, 2001. Proposed standard-weight equation for brook trout. North American Journal of Fisheries Management 21: 253–254.CrossRefGoogle Scholar
  11. Kabata, Z., 1969. Revision of the genus Salmincola Wilson, 1915 (Copepoda:Lernaeopodidae). Journal of the Fisheries Research Board of Canada 26: 2987–3041.CrossRefGoogle Scholar
  12. Kusnierz, P. C., S. P. Stimmell & J. B. K. Leonard, 2014. Migration, size, and age structure of brook trout (Salvelinus fontinalis) from two Lake Superior tributaries. The American Midland Naturalist 172: 119–130.CrossRefGoogle Scholar
  13. McGladdery, S. E. & C. E. Johnston, 1988. Egg development and control of the gill parasite, Salmincola salmoneus, on atlantic salmon kelts (Salmo salar) exposed to four different regimes of temperature and photoperiod. Aquaculture 68: 193–202.CrossRefGoogle Scholar
  14. Miller, L. M., D. R. Schreiner, J. E. Blankenheim, M. C. Ward, H. R. Quinlan & S. Moore, 2016. Effects of restrictive harvest regulations on rehabilitation of coaster brook trout in Minnesota’s portion of Lake Superior. Journal of Great Lakes Research 42: 883–892.CrossRefGoogle Scholar
  15. Mitro, M., 2016. Brook trout, brown trout, and ectoparasitic copepods Salmincola edwardsii: species interactions as a proximate cause of brook trout loss under changing environmental conditions. Transactions of the American Fisheries Society 145: 1223–1233.CrossRefGoogle Scholar
  16. Monzyk, F. R., T. A. Friesen & J. D. Romer, 2015. Infection of juvenile salmonids by Salmincola californiensis (Copepoda: Lernaeopodidae) in reservoirs and streams of the Willamette River Basin, Oregon. Transactions of the American Fisheries Society 144: 891–902.CrossRefGoogle Scholar
  17. Mucha, J. M. & R. W. Mackereth, 2008. Habitat use and movement patterns of brook trout in Nipigon Bay, Lake Superior. Transactions of the American Fisheries Society 137: 1203–1212.CrossRefGoogle Scholar
  18. Neumann, R. M., C. S. Guy & D. W. Willis, 2012. Length, weight, and associated indices. In Zale, A. V., D. L. Parrish & T. M. Sutton (eds), Fisheries Techniques, 3rd ed. American Fisheries Society, Bethesda: 637–670.Google Scholar
  19. Poulin, R., M. A. Curtis & M. E. Rau, 1991. Size, behaviour, and acquisition of ectoparasitic copepods by brook trout, Salvelinus fontinalis. Oikos 61: 169–174.CrossRefGoogle Scholar
  20. R Core Team, 2017. R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria.Google Scholar
  21. Ruiz, C. F., J. M. Rash, D. A. Besler, J. R. Roberts, M. B. Warren, C. R. Arias & S. A. Bullard, 2017. Exotic “gill lice” species (Copepoda: Lernaeopodidae: Salmincola spp.) infect rainbow trout (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis) in the southeastern United States. Journal of Parasitology 103: 377–389.CrossRefGoogle Scholar
  22. Schreiner, D. R., K. I. Cullis, M. C. Donofrio, G. J. Fischer, L. Hewitt, K. G. Mumford, D. M. Pratt, H. Quinlan & S. J. Scott, 2008. Management perspectives on coaster brook trout rehabilitation in the Lake Superior basin. North American Journal of Fisheries Management 28: 1350–1364.CrossRefGoogle Scholar
  23. Scott, W. B. & E. J. Crossman, 1973. Freshwater Fishes of Canada. Fisheries Research Board of Canada, Ottawa.Google Scholar
  24. Scribner, K., C. Huckins, E. Baker & J. Kanefsky, 2012. Genetic relationships and gene flow between resident and migratory brook trout in Salmon Trout River. Journal of Great Lakes Research 38: 152–158.CrossRefGoogle Scholar
  25. Sutherland, D. R. & D. D. Wittrock, 1985. The effects of Salmincola californiensis (Copepoda: Lernaeopodidae) on the gills of farm-raised rainbow trout, Salmo gairdneri. Canadian Journal of Zoology 63: 2893–2901.CrossRefGoogle Scholar
  26. Vigil, E. M., K. R. Christianson, J. M. Lepak & P. J. Williams, 2016. Temperature effects on hatching and viability of juvenile gill lice, Salmincola californiensis. Journal of Fish Diseases 39: 899–905.CrossRefGoogle Scholar
  27. Wilson, C. C., W. Stott, L. Miller, S. D’Amelio, M. J. Jennings & A. M. Cooper, 2008. Conservation genetics of Lake Superior brook trout: issues, questions, and directions. North American Journal of Fisheries Management 28: 1307–1320.CrossRefGoogle Scholar

Copyright information

© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply  2019

Authors and Affiliations

  1. 1.U.S. Fish and Wildlife Service, Ashland Fish and Wildlife Conservation OfficeAshlandUSA

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