Fish Physiology and Biochemistry

, Volume 4, Issue 2, pp 101–110 | Cite as

Osmoregulatory ability of chum salmon,Oncorhynchus keta, reared in fresh water for prolonged periods

  • S. Hasegawa
  • T. Hirano
  • T. Ogasawara
  • M. Iwata
  • T. Akiyama
  • S. Arai
Article

Abstract

The osmoregulatory ability of chum salmon (Oncorhynchus keta), reared in fresh water for a prolonged period, was examined by transferring them directly to seawater and then back to fresh water. When fry and juveniles weighing 0.3–125g, reared in fresh water for 1.5–13 months, were transferred directly to seawater, they adjusted their plasma Na+ concentration to the seawater-adapted level within 12–24h. When they were transferred back to fresh water after having been adapted to seawater for 2 weeks, the plasma Na+ level gradually decreased during the first 12–24h, and then increased to reattain the initial freshwater level after 5–7 days. No mortality was observed during the experiment except among the smallest fry weighing about 0.3g after transfer to seawater (2.1%). The maintenance of good osmoregulatory ability of the chum salmon for a prolonged period in fresh water seems to be unique among Pacific salmon, with the possible exception of the pink salmon.

Changes in plasma levels of hormones during the transfer experiments were recorded in juveniles reared in fresh water for 13 months. Prolactin levels increased maximally 3 days after transfer from seawater to fresh water, as would be expected from its well-established role in freshwater adaptation in several euryhaline teleosts. In addition, an increase in plasma growth hormone was observed during the first 12h after seawater transfer, along with a tendency towards a decrease during freshwater transfer, suggesting an important role for this hormone in seawater adaptation. There were no consistent changes in plasma levels of thyroxine and cortisol during freshwater to seawater or seawater to freshwater transfer.

Keywords

chum salmon osmoregulation prolactin growth hormone cortisol thyroxine 

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References cited

  1. Baggerman, B. 1960. Salinity preference, thyroid activity, and the seaward mirgration of four species of Pacific salmon (Oncorhynchus). J. Fish. Res. Bd. Can. 17: 295–322.Google Scholar
  2. Barton, B.A., Schreck, C.B., Ewing, R.D., Hemmingsen, A.V. and Patino, R. 1985. Changes in plasma cortisol during stress and smoltification in coho salmonOncorhynchus kisutch. Gen. Comp. Endocrinol. 59: 468–471.CrossRefPubMedGoogle Scholar
  3. Bern, H.A. 1983. Functional evolution of prolactin and growth hormone in lower vertebrates. Am. Zool. 23: 663–671.Google Scholar
  4. Black, V.S. 1951. Changes in body chloride, density, and water content of chum (Oncorhynchus keta) and coho (O. kisutch) salmon fry when transferred from freshwater to seawater. J. Fish. Res. Bd. Can. 8: 164–177.Google Scholar
  5. Bolton, J.P., Takahashi, A., Kawauchi, H., Kubota, J. and Hirano, T. 1986. Development and validation of a salmon growth hormone radioimmunoassay. Gen. Comp. Endocrinol. 62: 230–238.CrossRefPubMedGoogle Scholar
  6. Bolton, J.P., Collie, N.L., Kawauchi, H. and Hirano, T. 1987. Osmoregulatory action of growth hormone in rainbow trout (Salmo gairdneri). J. Endocrinol. 112: 63–68.PubMedCrossRefGoogle Scholar
  7. Brett, J.R. and Solmie, W.A. 1978. The 1977 crop of salmon reared on the Pacific Biological Station experimental fish farm. Fish. Mar. Serv. Tech. Rep. 845: 1–17.Google Scholar
  8. Clarke, W.C. and Blackburn, J. 1977. A seawater challenge test to measure smoking of juvenile salmon. Can. Fish. Mar. Serv. Tech. Rep. 705: 1–11.Google Scholar
  9. Clarke, W.C., Farmer, S.W. and Hartwell, K.U. 1977. Effects of teleost pituitary growth hormone on growth ofTilapia mossambica and on growth and sea water adaptation of sockeye salmon (Oncorhynchus nerka). Gen. Comp. Endocrinol. 33: 174–178.CrossRefPubMedGoogle Scholar
  10. Dickhoff, W.W., Folmar, L.C., Mighell, J.L. and Mahnken, C.R.W. 1982. Plasma thyroid hormones during smoltification of yearling and underyearling coho salmon and yearling chinook salmon and steelhead trout. Aquaculture 28: 39–48.CrossRefGoogle Scholar
  11. Eddy, F.B. 1981. Effects of stress on osmotic and ionic regulation in fish.In Stress and Fish. pp. 77–102. Edited by A.D. Pickering. Academic Press, New York.Google Scholar
  12. Folmar, L.C. and Dickhoff, W.W. 1980. The parr-smolt transformation (smoltification) and seawater adaptation in salmonids. A review of selected literature. Aquaculture 21: 1–37.CrossRefGoogle Scholar
  13. Hirano, T. 1986. The spectrum of prolactin action in teleosts.In Comparative Endocrinology: Development and Directions. pp. 53–74. Edited by C.L. Ralph. Alan Liss, New York.Google Scholar
  14. Hirano, T. and Mayer-Gostan, H. 1978. Endocrine control of osmoregulation in fish.In Comparative Endocrinology. pp. 209–212. Edited by P.J. Gaillard and H.H. Boer. Elsevier, Amsterdam.Google Scholar
  15. Hirano, T., Primel, P., Kawauchi, H., Takahashi, A., Ogasawara, T., Kubota, J., Nishioka, R.S., Bern, H.A., Takada, K. and Ishii, S. 1985. Development and validation of a salmon prolactin radioimmunoassay. Gen. Comp. Endocrinol. 59: 266–276.CrossRefPubMedGoogle Scholar
  16. Hirano, T., Ogasawara, T., Bolton, J.P., Collie, N.L., Hasegawa, S. and Iwata, M. 1987. Osmoregulatory role of prolactin in lower vertebrates,In Comparative Physiology of Environmental Adaptations. Edited by R. Kirsch and B. Lahlou. Karger, Basel. In press.Google Scholar
  17. Hoar, W.S. 1976. Smolt transformation: evolution, behavior and physiology. J. Fish. Res. Bd. Can. 33: 1233–1252.Google Scholar
  18. 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. Bd. Can. 18: 401–415.Google Scholar
  19. Iwata, M., Hasegawa, S. and Hirano, T. 1982a. Decreased seawater adaptability of chum salmon (Oncorhynchus keta) fry following prolonged rearing in fresh water. Can. J. Fish. Aqu. Sci. 39: 509–514.CrossRefGoogle Scholar
  20. Iwata, M., Hirano, T. and Hasegawa, S. 1982b. Behavior and plasma sodium regulation of chum salmon fry during transition into seawaler. Aquaculture 28: 133–142.CrossRefGoogle Scholar
  21. Iwala, M., Ogura, H., Komatsu, S. and Suzuki, K. 1986. Loss of seawaler preference in chum salmon (Oncorhynchus ketafry retained in fresh water after migration season. J. Exp. Zool. 240: 369–370.Google Scholar
  22. Iwata, M., Komatsu, S., Hasegawa, S., Ogasawara, T. and Hirano, T. 1987. Inconsistent effect of thyroid hormone allerations on seawater adaptability of fry of chum salmon (Oncorhynchus keta). Bull. Jap. Soc. Sci. Fish. 53: In press.Google Scholar
  23. Kashiwagi, M. and Sato, R. 1969. Studies on the osmoregulation of the chum salmon,Oncorhynchus keta (Walbaum). I. The tolerance of eyed period eggs, alevins and fry of the chum salmon to seawater. Tohoku J. Agric. Res. 20: 41–47.Google Scholar
  24. Kennedy, W.A., Shoop, C.T., Grifftioen, W. and Solmie, A. 1976. The 1975 crop of salmon reared on the Pacific Biological Station experimental fish farm. Fish. Mar. Serv. Tech. Rep. 665: 1–20.Google Scholar
  25. Komourdjian, M.P., Saunders, R.L. and Fenwick, J.C. 1976. The effect of porcine somatotropin on growth and survival in seawater of Atlantic salmon (Salmo salar) parr. Can. J. Zool. 54: 531–535.PubMedGoogle Scholar
  26. Kubo, T. 1953. On the blood of salmonid fishes of Japan during migration. I. Freezing point of blood. Bull. Fac. Fish. Hokkaido Univ. 4: 138–149.Google Scholar
  27. Kwain, W.H. 1982. Spawning behavior and early life history of pink salmonOncorhynchus gorbuscha in the Great Lakes, USA Canada. Can. J. Fish. Aqu. Sci. 39: 1353–1360.Google Scholar
  28. Leatherland, J.F. 1982. Environmental physiology of the teleost thyroid gland. Envir. Biol. Fish. 7: 83–110.CrossRefGoogle Scholar
  29. Leatherland, J.F. 1985. Studies of the correlation between stress-response, osmoregulation and thyroid physiology in rainbow trout,Salmo gairdnerii (Richardson). Comp. Biochem. Physiol. 80A: 523–531.CrossRefGoogle Scholar
  30. Loretz, C.A. and Bern, H.A. 1982. Prolactin and osmoregulation in vertebrates. Neuroendocrinology 35: 292–304.PubMedGoogle Scholar
  31. Milne, R.S. and Leatherland, J.F. 1980. Studies on the relationship between osmotic or ionic regulation and thyroid gland activity in two salmonid fishesSalmo gairdnerii Richardson andOncorhynchus kisutch Walbaum. J. Fish Biol. 16: 349–360.Google Scholar
  32. Miwa, S. and Inui, Y. 1985. Effect of L-thyroxine and ovine growth hormone on smoltification of amago salmon (Oncorhynchus rhodurus). Gen. Comp. Endocrinol. 58: 436–442.CrossRefPubMedGoogle Scholar
  33. Nakano, H., Ando, Y. and Shirahata, S. 1985. Osmoregulatory ability of juvenile chum salmon (Oncorhynchus keta). Bull. Hokkaido Reg. Fish. Res. Lab. 50: 87–92.Google Scholar
  34. Nicoll, C.S. 1981. Role of prolactin in water and ion balance in vertebrates.In Prolactin. pp. 127–166. Edited by R.B. Jaffe. Elsevier, New York.Google Scholar
  35. Nicoll, C.S., Wilson, S.W., Nishioka, R. and Bern, H.A. 1981. Blood and pituitary prolactin levels in tilapia (Sarotherodon mossambicus; Teleostei) from different salinities as measured by a homologous radioimmunoassay. Gen. Comp. Endocrinol. 44: 365–373.CrossRefPubMedGoogle Scholar
  36. Parry, G. 1960. The development of salinity tolerance in the salmon,Salmo salar (L.) and some related species. J. Exp. Biol. 37: 425–434.Google Scholar
  37. Peden, A.E. and Edwards, J.C. 1976. Permanent residence in fresh water of a large chum salmon (Oncorhynchus keta). Syesis 9: 363.Google Scholar
  38. Prunet, P., Boeuf, G. and Houdebine, L.M. 1985. Plasma and pituitary prolactin levels in rainbow trout during adaptation to different salinities. J. Exp. Zool. 235: 187–196.CrossRefPubMedGoogle Scholar
  39. Redding, J.M., Schreck, C.B., Birks, E.K. and Ewing, R.D. 1984. Cortisol and its effects on plasma thyroid hormone and electrolyte concentrations in fresh water and during seawater acclimation in yearling coho salmon.Oncorhynchus kisutch. Gen. Comp. Endocrinol. 56: 146–155.CrossRefGoogle Scholar
  40. Refstie, T. 1982. The effect of feeding thyroid hormones on saltwater tolerance and growth rate of Atlantic salmon. Can. J. Zool. 60: 2706–2712.Google Scholar
  41. Richman, III, N.H. and Zaugg, W.S. 1987. Effects of cortisol and growth hormone on osmoregulation in pre- and desmolted coho salmon (Oncorhynchus kisutch). Gen. Comp. Endocrinol. 65: 189–198.CrossRefPubMedGoogle Scholar
  42. Specker, J.I., 1982. Interrenal function and smoltification. Aquaculture 28: 59–66.CrossRefGoogle Scholar
  43. Specker, J.I., and Schreck, C.B. 1984. Influence of ambient salts on plasma thyroxine concentration in juvenile coho salmon. Trans. Am. Fish. Soc. 113: 90–94.CrossRefGoogle Scholar
  44. Specker, J.L., Distelano, J.J., Grau, E.G., Nishioka, R.S. and Bern, H.A. 1984. Development-associated changes in thyroxine kinetics in juvenile salmon. Endocrinology 115: 399–406.PubMedCrossRefGoogle Scholar
  45. Sweeting, R.M., Wagner, G.F. and McKeown, B.A. 1985. Changes in plasma glucose, amino acid nitrogen and growth hormone during smoltification and seavvater adaptation in coho salmon.Oncorhynchus kisutch. Aquaculture 45: 185–197.CrossRefGoogle Scholar
  46. Tagawa, M. and Hirano, T. 1987. Presence of thyroxine in eggs and changes in its content during early development of chum salmon,Oncorhynchus keta. Gen. Comp. Endocrinol. In press.Google Scholar
  47. Takahashi, A., Kubota, J., Kawauchi, H. and Hirano, T. 1985. Effects of N-terminal peptide of salmon proopiocortin on interrenal function of the rainbow trout. Gen. Comp. Endocrinol. 58: 328–335.CrossRefPubMedGoogle Scholar
  48. Wedemeyer, G.A., Saunders, R.L. and Clarke, W.C. 1980. Environmental factors affecting simolification and early marine survival of anadromous salmonids. Mar. Fish. Rev. 42: 1–14.Google Scholar
  49. Weisbart, M. 1968. Osmotic and ionic regulation in embryos, alevins and fry of five species of Pacific salmon. Can. J. Zool. 46: 385–397.CrossRefGoogle Scholar

Copyright information

© Kugler Publications 1987

Authors and Affiliations

  • S. Hasegawa
    • 1
  • T. Hirano
    • 1
  • T. Ogasawara
    • 1
  • M. Iwata
    • 1
  • T. Akiyama
    • 2
  • S. Arai
    • 2
  1. 1.Ocean Research InstituteUniversity of TokyoTokyoJapan
  2. 2.National Research Institute of AquacultureMieJapan

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