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Seasonal changes in hypoosmoregulatory ability in landlocked and anadromous populations of Arctic charr, Salvelinus alpinus, and Atlantic salmon, Salmo salar

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Seasonal changes in hypoosmoregulatory ability were compared in landlocked and anadromous strains of Arctic charr and Atlantic salmon. Seawater adaptability was assessed using periodic 48 h seawater challenge tests with 25‰. seawater. The landlocked strains of Arctic charr, two from northern Sweden and one from Southern Norway, displayed similar seasonal changes in seawater adaptability as the anadromous strain. Seawater tolerance increased during spring and remained high until the end of July — early August after which it declined. The two strains of Atlantic salmon displayed different seasonal patterns in hypoosmoregulatory ability. The anadromous strain showed a pronounced seasonal pattern with maximal seawater adaptability in early June. In contrast, seawater tolerance in the landlocked strain improved steadily during spring and remained high until late autumn. During the period of enhanced seawater tolerance, hypoosmoregulatory ability increased significantly with body size in both Arctic charr and anadromous Atlantic salmon. The minimum size at which fish were able to regulate plasma sodium following seawater transfer at a level comparable to freshwater levels (<170 mmol I−1) differed significantly between anadromous Atlantic salmon (ca. 14 cm) and Arctic charr (ca. 22 cm). The results show that seasonal changes in hypoosmoregulatory ability are present in both Atlantic salmon and Arctic charr, and that these physiological traits are retained in the corresponding landlocked strains. However, the seasonal pattern of seawater adaptability as well as the minimum size at which seawater tolerance occurs differs between the two species.

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References cited

  • Arnesen, A.M., M. Halvorsen & J.K. Nilssen. 1992. Development of hypoosmoregulatory capacity in Arctic charr (Salvelinus alpinus) reared under either continuous light or natural photoperiod. Can. J. Fish. Aquat. Sci. 49: 229–237.

    Google Scholar 

  • Barbour, S.E. & E.T. Garside. 1983. Some physiological distinctions between freshwater and diadromous forms of the Atlantic salmon, Salmo salar L. Can. J. Zool. 61: 1165–1170.

    Google Scholar 

  • Berg, O.K. 1985. The formation of non-anadromous populations of Atlantic salmon, Salmo salar L., in Europe. J. Fish Biol. 27: 805–815.

    Google Scholar 

  • Berglund, I., M. Schmitz & H. Lundqvist. 1992. Seawater adaptability in Baltic salmon (Salmo salar): a bimodal smoltification pattern in previously mature males. Can. J. Fish. Aquat. Sci. 49: 1097–1106.

    Google Scholar 

  • Birt, T.P. J.M. Green & W.S. Davidson. 1991. Contrasts in development and smolting of genetically distinct sympatric anadromous and nonanadromous Atlantic salmon, Salmo salar Can. J. Zool. 69: 2075–2084.

    Google Scholar 

  • Blackburn, J. & W.C. Clarke. 1987. Revised procedure for the 24 hour seawater challenge test to measure seawater adaptability of juvenile salmonids. Can. Tech. Rep. Fish. Aquat. Sci. 1515. 35 pp.

    Google Scholar 

  • Burton, M.P. & D.R. Idler. 1984. Can Newfoundland landlocked salmon, Salmo salar L., adapt to sea water? J. Fish Biol. 24: 59–64.

    Google Scholar 

  • Chernitsky, A.G. & A.A. Loenko. 1983. The osmoregulatory system and possible ways of differentiation in ecological forms of Atlantic salmon, Salmo salar (Salmonidae). J. Ichthyol. 23: 84–94.

    Google Scholar 

  • Clarke, W.C. H. Lundqvist & L.-O. Eriksson. 1985. Accelerated photoperiod advances seasonal cycle of seawater adaptation in juvenile Baltic salmon, Salmo salar, L. J. Fish Biol. 26: 29–35.

    Google Scholar 

  • Conte, F.P. & H.H. Wagner. 1965. Development of osmotic and ionic in juvenile rainbow trout Salmo gairdneri. Comp. Biochem. Physiol. 14: 603–620.

    Google Scholar 

  • Conte, F.P., H.H. Wagner, J. Fessler & C. Gnose. 1966. Development of osmotic and ionic regulation in juvenile coho salmon (Oncorhynchus kisutch). Comp. Biochem. Physiol. 18: 1–15.

    Google Scholar 

  • Dempson, J.P. 1993. Salinity tolerance of freshwater acclimated, small-sized Arctic charr, Salvelinus alpinus from northern Labrador. J. Fish Biol. 43: 451–462.

    Google Scholar 

  • Duston, J. & R.L. Saunders. 1990. The entrainment role of photoperiod on hypoosmoregulatory and growth-related aspects of smolting in Atlantic salmon (Salmo salar). Can. J. Zool. 68: 707–715.

    Google Scholar 

  • Ekmann, S. 1953. Über Fischpässe in der skandinavischen Hochgebirgskette. Arch. f. Hydrobiol. 48: 92–96.

    Google Scholar 

  • Evropeytseva, N.V. 1963. Comparative analysis of the desmoltification process among the young of different ecological forms of Atlantic salmon. Fish. Res. Board. Can. Transl. Ser. No. 431. 15 pp.

  • Finstad, B. & T.G. Heggberget. 1993. Migration, growth and survival of wild and hatchery — reared anadromous Arctic charr (Salvelinus alpinus) in Finnmark, northern Norway. J. Fish Biol. 43: 303–312.

    Google Scholar 

  • Finstad, B., K.J. Nilssen & A.M. Arnesen. 1989. Seasonal changes in sea-water tolerance of Arctic charr (Salvelinus alpinus). J. Comp. Physiol. B. 159: 371–378.

    Google Scholar 

  • Folmar, L.C. & W.W. Dickhoff. 1980. The parr-smolt transformation (smoltification) and seawater adaptation in salmonids. A review of selected literature. Aquaculture 21: 1–37.

    Google Scholar 

  • Gullstad, N.1975. On the biology of char (Salvelinus alpinus) in Svalbard. 1. Migratory and non-migratory char in Revvatnet, Spitzbergen, Nor. Polarinst. 125–140.

  • Hoar, W.S. 1976. Smolt transformation: evolution, behaviour and physiology. J. Fish. Res. Board. Can. 33: 1234–1252.

    Google Scholar 

  • Hoar,W.S.1988. The physiology of smolting salmonids. pp. 275–343. In: W.S. Hoar & D.J. Randall(ed.) Fish Physiology, Volume 11B, Academic Press, New York.

    Google Scholar 

  • Houston, A.H. 1961. Influence of size upon the adaptation of steelhead trout (Salmo gairdneri) and chum salmon (Oncorhynchus keta) to sea water. J. Fish. Res. Board Can. 18: 401–415.

    Google Scholar 

  • Johnson, L. 1980. The Arctic charr, Salvelinus alpinus. pp. 15–98. In: E.K. Balon. (ed.) Charrs. Salmonid Fishes of the Genus Salvelinus, Dr W. Junk Publishers, The Hague.

    Google Scholar 

  • Johnson, C.E. & R.L. Saunders. 1981. Parr-smolt transformation of yearling Atlantic salmon (Salmo salar) at several rearing temperatures. Can. J. Fish. Aquat. Sci. 38: 1189–1198.

    Google Scholar 

  • Klemetsen, A. 1984. The Arctic charr speciation problem as seen from Northern Norway. pp. 65–77. In: L.J. Johnson & B.L. Bruns. (ed.) Biology of Arctic Charr. University of Manitoba Press, Winnipeg.

    Google Scholar 

  • Koch, H.J.A.E. 1983. Régulation minérale et hémoglobines chez quelques saumons (Salmo salar L.) dulcaquicoles. Ann. Soc. R. Zool. Belg. T. 113 (suppl.1): 259–270.

    Google Scholar 

  • Lundqvist, H. & L.-O. Eriksson. 1985. Annual rhythms of swimming behaviour and seawater adaptation in young Baltic salmon, Salmo salar, associated with smolting. Env. Biol. Fish. 14: 259–267.

    Google Scholar 

  • Lundqvist, H., B. Borg & I. Berglund. 1989. Androgens impair seawater adaptability in smolting Baltic salmon (Salmo salar). Can. J. Zool. 67: 1733–1736.

    Google Scholar 

  • Mathisen, O.A. & M. Berg. 1968. Growth rates of the char Salvelinus alpinus (L.) in the Vardnes River, Troms, Northern Norway. Inst. Freshw. Res. Drottningholm Rep. 48: 177–186.

    Google Scholar 

  • McCormick, S.D. & R.J. Naiman. 1984. Osmoregulation in brook trout, Salvelinus fontinalis. II. Effects of size, age and photoperiod on seawater survival and ionic regulation. Comp. Biochem. Physiol. A79: 17–28.

    Google Scholar 

  • McCormick, S.D., R.J. Naiman & E.T. Montgomery. 1985. Physiological smolt characteristics of anadromous and non-anadromous brook trout (Salvelinus fontinalis) and Atlantic salmon (Salmo salar). Can. J. Fish. Aquat. Sci. 42: 529–538.

    Google Scholar 

  • McCormick, S.D. & R.L. Saunders. 1987. Preparatory adaptations for marine life of salmonids: osmoregulation, growth, and metabolism. Amer. Fish. Soc. Symp. 1: 211–229.

    Google Scholar 

  • Nielsen, J. 1961. Contributions to the biology of the Salmonidae in Greenland. IV Age and growth of the fresh-water stage of anadromous char, Salvelinus alpinus L. Medd. Gronl. 159: 49–75.

    Google Scholar 

  • Nordeng, H. 1968. Arctic charr (Salvelinus alpinus L.) pp. 1237–1248. In: K.W. Jensen. (ed.) Sportfiskerens Leksikon, Gyldenal Norsk Forlag, Oslo.

    Google Scholar 

  • Parry, G. 1958. Size and osmoregulation in salmonid fishes. Nature 181: 1218–1219.

    Google Scholar 

  • Randall, R.G., M.C. Healey & J.B. Dempson. 1987. Variability in length of freshwater residence of salmon, trout and char. Amer. Fish. Soc. Symp. 1: 27–41.

    Google Scholar 

  • Ring, O. & L. Hanell. 1987. Genetical background of the Swedish brood stock of salmon and trout from the river Gullspångsälven in Kälarne. pp 1–44. In: Information from the Institute of Freshwater Research of the Swedish National Board of Fisheries 3.

  • Ros, T. 1981. Salmonids in the Lake Vänern area. Ecol. Bull. (Stockholm) 34: 21–31.

    Google Scholar 

  • Rounsefell, G.A. 1958. Anadromity in North American Salmonidae. U.S. Fish Wildl. Serv. Fish. Bull. 58 (131): 171–185.

    Google Scholar 

  • Schmitz, M. 1992. Annual variations in rheotactic behaviour and seawater adaptation in a landlocked Arctic charr, Salvelinus alpinus. Can. J. Fish. Aquat. Sci. 49: 448–452.

    Google Scholar 

  • Schmitz, M. & I. Mayer. 1993. Effect of androgens on seawater adaptation in Arctic charr. Fish Physiol. Biochem. 12: 11–20.

    Google Scholar 

  • Staurnes, M., G. Lysfjord & O.K. Berg. 1992a. Parr-smolt transformation of a nonanadromous population of Atlantic salmon (Salmo salar) in Norway. Can. J. Zool. 70: 197–199.

    Google Scholar 

  • Staurnes, M., T. Sigholt, G. Lysfjord & O.A. Gulseth. 1992b. Difference in the seawater tolerance of anadromous and landlocked populations of Arctic char (Salvelinus alpinus). Can. J. Fish. Aquat. Sci. 49: 443–447.

    Google Scholar 

  • Wagner, H.H. 1974. Photoperiod and temperature regulation of smolting in steelhead trout (Salmo gairdneri). Can. J. Zool. 52: 219–234.

    Google Scholar 

  • Wagner, H.H., F.P. Conte & J.I. Fessler. 1969. Development of osmotic and ionic regulation in two races of chinook salmon O. tshawytscha. Comp. Biochem. Physiol. 29: 325–341.

    Google Scholar 

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  1. Department of Aquaculture, Swedish University of Agricultural Sciences, S-90183, Umeå, Sweden

    Monika Schmitz

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Schmitz, M. Seasonal changes in hypoosmoregulatory ability in landlocked and anadromous populations of Arctic charr, Salvelinus alpinus, and Atlantic salmon, Salmo salar . Environ Biol Fish 42, 401–412 (1995). https://doi.org/10.1007/BF00001471

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  • DOI: https://doi.org/10.1007/BF00001471

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