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Past seawater experience enhances subsequent growth and seawater acclimability in a later life stage in rainbow trout Oncorhynchus mykiss

  • Toyoji KanekoEmail author
  • Rintaro Suzuki
  • Soichi Watanabe
  • Hiroshi Miyanishi
  • Shun Matsuzawa
  • Mitsuru Furihata
  • Noriko Ishida
Original Article Biology

Abstract

In the present study, we attempted to investigate the effects of temporal seawater experience on subsequent growth and later seawater acclimability in rainbow trout. To elucidate seawater acclimability of small juveniles (3–4 g), fish were transferred to seawater diluted to 25 ppt (25-ppt seawater) and the change in blood osmolality was examined. All the juveniles survived transfer to 25-ppt seawater for 7 days with blood osmolality remaining within a physiological range, indicating successful acclimation to 25-ppt seawater. For the preparation of seawater-experienced fish, young adults of rainbow trout (about 40 g) were exposed to 25-ppt seawater for 7 days without feeding, transferred back to fresh water, and reared with feeding for another 76 days. The daily growth rate was higher in seawater-experienced fish (1.86%/day) than in control fish (1.66%/day). The seawater-experienced and control fishes were then transferred directly to full-strength seawater. The blood osmolality stayed within a normal range with a transient increase just after transfer in seawater-experienced fish, but kept increasing without a declining trend in control fish. Our findings showed that temporal seawater exposure in the past enhances subsequent growth and seawater acclimability in the later life stage in rainbow trout.

Keywords

Rainbow trout Seawater acclimability Seawater experience Growth 

Notes

Acknowledgements

This work was partially supported by a grant from the Fisheries Agency of Japan.

References

  1. Bath RN, Eddy FB (1979) Salt and water balance in rainbow trout (Salmo gairdneri) rapidly transferred from fresh water to sea water. J Exp Biol 83:193–202Google Scholar
  2. Boeuf G, Harache Y (1982) Criteria for adaptation of salmonids to high salinity seawater in France. Aquaculture 28:163–176CrossRefGoogle Scholar
  3. Bolton JP, Collie NL, Kawauchi H, Hirano T (1987) Osmoregulatory actions of growth hormone in rainbow trout (Salmo gairdneri). J Endocr 112:63–68CrossRefGoogle Scholar
  4. Gall GAE, Crandell PA (1992) The rainbow trout. Aquaculture 100:1–10CrossRefGoogle Scholar
  5. Hecht BC, Campbell NR, Holecek DE, Narum SR (2013) Genome-wide association reveals genetic basis for the propensity to migrate in wild populations of rainbow and steelhead trout. Mol Ecol 22:3061–3076CrossRefGoogle Scholar
  6. Jackson AJ (1981) Osmotic regulation in rainbow trout (Salmo gairdneri) following transfer to sea water. Aquaculture 24:143–151CrossRefGoogle Scholar
  7. Johnsson J, Clarke WC (1988) Development of seawater adaptation in juvenile steelhead trout (Salmo gairdneri) and domesticated rainbow trout (Salmo gairdneri): effects of size, temperature and photoperiod. Aquaculture 71:247–263CrossRefGoogle Scholar
  8. Landless PJ (1976) Acclimation of rainbow trout to sea water. Aquaculture 7:173–179CrossRefGoogle Scholar
  9. Landless PJ, Jackson AJ (1976) Acclimatising young salmon to seawater. Fish Farming Int 3:15–17Google Scholar
  10. Leitritz E (1959) Trout and salmon culture (hatchery methods), Fish Bulletin 107. California Department of Fish and Game, San DiegoGoogle Scholar
  11. McKay LR, Gjerde B (1985) The effect of salinity on growth of rainbow trout. Aquaculture 49:325–331CrossRefGoogle Scholar
  12. McLeese JM, Johnsson J, Huntley FM, Clarke WC, Weisbart M (1994) Seasonal changes in osmoregulation, cortisol, and cortisol receptor activity in the gills of parr/smolt of steelhead trout and steelhead-rainbow trout hybrids, Oncorhynchus mykiss. Gen Comp Endocrinol 93:103–113CrossRefGoogle Scholar
  13. Miyanishi H, Inokuchi M, Nobata S, Kaneko T (2016) Past seawater experience enhances seawater adaptability in medaka, Oryzias latipes. Zool Lett.  https://doi.org/10.1186/s40851-016-0047-2 Google Scholar
  14. Moriyama S, Ayson FG, Kawauchi H (2000) Growth regulation by insulin-like growth factor-I in fish. Biosci Biotechnol Biochem 64:1553–1562CrossRefGoogle Scholar
  15. Sakamoto T, McCormick SD (2006) Prolactin and growth hormone in fish osmoregulation. Gen Comp Endocrinol 147:24–30CrossRefGoogle Scholar
  16. Sakamoto T, McCormick SD, Hirano T (1993) Osmoregulatory actions of growth hormone and its mode of action in salmonids: a review. Fish Physiol Biochem 11:155–164CrossRefGoogle Scholar
  17. Salman NA, Eddy FB (1990) Increased sea-water adaptability of non-smolting rainbow trout by salt feeding. Aquaculture 86:259–270CrossRefGoogle Scholar
  18. Smith GR, Stearley RF (1989) The classification and scientific names of rainbow and cutthroat trouts. Fisheries 14:4–10CrossRefGoogle Scholar
  19. Teskeredžić E, Teskeredžić Z, Tomec M, Modrušan Z (1989) A comparison of the growth performance of rainbow trout (Salmo gairdneri) in fresh and brackish water in Yugoslavia. Aquaculture 77:1–10CrossRefGoogle Scholar

Copyright information

© Japanese Society of Fisheries Science 2019

Authors and Affiliations

  • Toyoji Kaneko
    • 1
    Email author
  • Rintaro Suzuki
    • 1
  • Soichi Watanabe
    • 1
  • Hiroshi Miyanishi
    • 2
  • Shun Matsuzawa
    • 3
  • Mitsuru Furihata
    • 3
  • Noriko Ishida
    • 4
  1. 1.Graduate School of Agricultural and Life SciencesThe University of TokyoBunkyoJapan
  2. 2.Faculty of AgricultureUniversity of MiyazakiMiyazakiJapan
  3. 3.Nagano Prefectural Fisheries Experimental StationAzuminoJapan
  4. 4.National Research Institute of Fisheries ScienceJapan Fisheries Research and Education AgencyYokohamaJapan

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