Abstract
The adaptive changes in the fatty acid (FA) composition of plasma phospholipids (PL) in response to alterations in environmental water temperature were investigated in juvenile rainbow trout (Oncorhynchus mykiss). The changes observed during thermal adaptation from 22°C in summer to 8°C in winter were reproduced by laboratory cold acclimation (CA) at 6°C of 22°C-summer-acclimated animals. In cold-acclimated and winter-acclimated trout, the increase in the unsaturation of PL fatty acids was mainly due to an enrichment of approximately 7% in the total weight percentage of 22∶6n−3, while a concomitant significant decrease in the levels of 18∶0 and of the monoenoic n−9 FA was observed. A time course study revealed that the changes in PL fatty acids became significant after 10 d of CA and were complete after one month. These changes in the composition of the fatty acyl chains of plasma total PL indicate that the FA composition of plasma lipoprotein PL does not remain constant during thermal adaptation. This would suggest that plasma lipoproteins provide a rapid systemic supply of lipids containing more or less unsaturated FA during thermal adaptation of poikilothermic animals.
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Abbreviations
- ANOVA:
-
analysis of variance
- CA:
-
cold acclimation
- FA:
-
fatty acids
- HDL:
-
high density lipoproteins
- PL:
-
phospholipids
- PUFA:
-
polyunsaturated fatty acids
- UI:
-
unsaturation index
- U/S:
-
ratio of unsaturated to saturated fatty acids
References
Sinensky, M. (1974)Proc. Natl. Acad. Sci. USA 71, 522–525.
Cossins, A.R. (1983)Biochem. Soc. Trans. 11, 332–333.
Hazel, J.R. (1984)Am. J. Physiol. 246, R460-R470.
Hazel, J.R. (1989) inAdvances in Comparative and Environmental Physiology (Wang, L.C.H., ed.) Vol. 4, pp. 1–50, Springer Verlag, Berlin.
Hazel, J.R., and Williams, E.E. (1990)Prog. Lipid Res. 29, 167–227.
Dey, I., Buda, C., Wiik, T., Halver, J.E., and Farkas, T. (1993)Proc. Natl. Acad. Sci. USA 90, 7498–7502.
Brett, J.R., and Groves, T.D.D. (1979) inFish Physiology, Vol. VIII. Bioenergetics and Growth (Hoar, W.S., Randall, D.J., and Brett, J.R., eds.) pp. 279–352, Academic Press, New York.
Ackman, R.G. (1980) inAdvances in Fish Science and Technology (Connell, J.J., ed.) pp. 86–103, Fishing News Books, Farnham.
Bly, J.E., Buttke, T.M., Meydrech, E.F., and Clem, W. (1986)Comp. Biochem. Physiol. 83B, 791–795.
Friedman, K.J., Easton, D.M., and Nash, M. (1986)Comp. Biochem. Physiol. 83B, 313–319.
Malak, N.A., Brichon, G., Meister, R. and Zwingelstein, G. (1989)Lipids 24, 318–324.
Wallaert, C., and Babin, P.J. (1993)Biochim. Biophys. Acta 1210, 23–26.
Ohta, A., Mayo, M.C., Kramer, N., and Lands, W.E.M. (1990)Lipids 25, 742–747.
SAS Institute Inc. (1988)SAS Procedures Guide, Release 6.03 Edition, SAS Institute Inc., Cary.
Hazel, J.R. (1979)Am. J. Physiol. 236, R91-R101.
Hochachka, P.W., and Somero, G.N. (1984)Biochemical Adaptation, Princeton University Press, Princeton.
Babin, P.J., and Vernier, J.M. (1989)J. Lipid Res. 30, 467–490.
Babin, P.J. (1987)Biochem. J. 246, 425–429.
Wallaert, C., and Babin, P.J. (1992)Lipids 27, 1032–1041.
Leger, C. (1985) inNutrition and Feeding in Fish (Cowey, C.B., Mackie, A.M., and Bell, J.G., eds.) pp. 299–331, Academic Press, London.
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Wallaert, C., Babin, P.J. Thermal adaptation affects the fatty acid composition of plasma phospholipids in trout. Lipids 29, 373–376 (1994). https://doi.org/10.1007/BF02537193
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DOI: https://doi.org/10.1007/BF02537193