Stress responses in sub-yearling great sturgeon to the air exposure

This study was conducted the effect of stress on blood glucose and cortisol levels in cultured great sturgeon. Blood sampling was done and then water level decreased to the half in experimental tanks. The fish were exposed in that situation and second blood sampling was taken after ۶ hours. Glucose and cortisol concentrations were measured by glucose oxidase method and Radioimmunoassay (RIA), respectively. The results showed that average of cortisol concentration reached from ۱۰.۸ ? ۳.۳ to ۱۴.۶ ? ۹.۰ ng ml-۱ (P<۰.۰۵). Indeed, average of glucose concentration was ۵۶.۴ ? ۱۲.۰ pre-stress exposures and reached to ۱۱۱.۶ ? ۱۷.۵ mg dl-۱ post-stress (P<۰.۰۵). Stress is most often associated with a negative perspective. We recommend for increasing efficiency in rearing, should avoid of stressors possibly that it needs to right management on rearing practice and this action causes to increase in production, fish welfare, restoration and economic efficiency.   REFERENCES  Barton, B.A. and Iwama, G.K. (۱۹۹۱) Physiological changes in fish from stress in aquaculture with emphasis on the response and effects of corticosteroids. Ann. Rev. Fish. Dis. ۱, ۳-۲۶. Barton, B.A., Weiner, G. S. and Schreck, C. B. (۱۹۸۵) Effect of prior acid exposure on physiological responses of juvenile rainbow trout (Salmo gairdneri) to acute handling stress. Can. J. Fish. Aquat. Sci. ۴۲, ۷۱۰-۷۱۷. Barton, B.A., Jansen, C.R., Hauskins, B.L. and Bollig, H. (۱۹۹۹) Juvenile scaphirhynchid sturgeons exhibit low physiological responses to aquaculture-related stressors. Aquaculture Canada ۹۹, October ۲۶-۲۹, Victoria. Bayunova, L., Barannikova, I., Semenkova, T. (۲۰۰۲) Sturgeon stress reactions in aquaculture. J. Appl. Ichthyol.۱۸, ۳۹۷-۴۰۴. Bukovskaya, O., Lambert, J.G.D. and Kime, D.E. (۱۹۹۷) In vitro steroidogenesis by gonads of the Russian sturgeon, Acipenser gueldenstaedti Brandt. Fish Physiol. Biochem. ۴, ۳۴۵-۳۵۳. Donaldson, E.M. (۱۹۸۱) The Pituitaryinterrenal axis as an indicator of stress in fish. In: Pickering, A.D. (Ed.), Stress in fish. Academic Press, London. pp. ۱۱-۴۷. Faulkner, I.N. and Moberg, G.P. (۱۹۹۷) Effects of short term management stress on the ability of GnRHa to induce gonadotropin secretion in male white sturgeon, Acipenser transmontanus. Aquaculture. ۱۵۹, ۱۵۹-۱۶۸. Fevolden, S.E., Røed, K.H., Fjalestad, K.T. and Stien, J. (۲۰۰۲) Selection response of cortisol and lysozyme in rainbow trout and correlation to growth. Aquaculture. ۲۰۵, ۶۱-۷۵. Floodmark, L.E.W., Urke, H.A., Halleraker, J.H., Arnekleiv, J.V., Vøllestad, L.A. and Pole΄o, A.B.S. (۲۰۰۲) Cortisol and glucose response in juvenile brown trout subjected to a fluctuating flow regime in an artificial stream. Journal of fish biology. ۶۰, ۲۳۸-۲۴۸. Grutter, A.S. and Pankhurst, N.W. (۲۰۰۰) The effect of capture, handling, confinement and ectoparasite load on plasma levels of cortisol, glucose and lactate in the coral reef fish (Hemigymnus melapterus). Journal of Fish Biology. ۵۷, ۳۹۱-۴۰۱. Keyvan, A. (۲۰۰۳) Iranian sturgeons in the Caspian Sea. Naghsh Mehr Publication,  ۴۰۰ p. (In Persian) Kozlov, V.I. (۱۹۹۳) Sturgeon farming. VNIRO, Moscow. ۶۳ p. Pankhurst, N.W. and Sharples, D.F. (۱۹۹۲) Effects of capture and confinement on plasma cortisol concentrations in the snapper, Pagrus auratus. Aust. J. Mar. Freshwater Res. ۴۳, ۳۴۵-۳۵۶. Pickering, A.D. and Pottinger, T.G. (۱۹۸۷) Poor water quality suppresses the cortisol response of salmonid fish to handling and confinement. Journal of Fish Biology. ۳۰, ۳۶۳-۳۷۴. Pickering, A.D., Pottinger, T.G., Carragher, J. and Sumpter, J.P. (۱۹۸۷) The effects of acute and chronic stress on the levels of reproductive hormones in the plasma of mature male brown trout, Salmo trutta L. Gen. Comp. Endorinol. ۶۸, ۲۴۹-۲۵۹. Pottinger, T.G. (۱۹۹۸) Changes in blood cortisol, glucose and lactate in carp retained in anglers keep nets. Journal of fish biology. ۵۳, ۷۲۸-۷۴۲. Pottinger, T.G. and Carrick, T.R. (۱۹۹۹) A comparison of plasma glucose and plasma cortisol as selection markers for high and low stress-responsiveness in female rainbow trout. Aquaculture. ۱۷۵, ۳۵۱-۳۶۳. Ruane, N.M., Huisman, E.A. and Komen, J. (۲۰۰۱) Plasma cortisol and metabolite level profiles in two isogenic strains of common carp during confinement. Journal of Fish Biology. ۵۹, ۱-۱۲. Schreck, C.B. (۱۹۸۱) Stress and compensation in teleostean fishes: responses to social and physical factors. In: Pickering, A. D. (Ed.), Stress in fish. Academic Press, London. pp. ۲۹۵-۳۲۱. Sumpter, J.P., Dye, H.M. and Benfey, T.J. (۱۹۸۶) The effects of stress on plasma ACTH, α-MSH, and cortisol levels in salmonid fishes. General and Comparative Endocrinology. ۶۲, ۳۷۷-۳۸۵. Sumpter, J.P. (۱۹۹۷) The endocrinology of stress. In: Iwama, G.K., Pickering, J.P., Sumpter, J.P. and Schreck, C.B. (Eds.), Fish stress and health in aquaculture. Cambridge, Cambridge University Press. Wedemeyer, G.A. and McLeay, D.J. (۱۹۸۱) Methods for determining the tolerance of fishes Solati & Falahatkar ۱۰۳ to environmental stressors. In: Pickering, A.D. (Ed.), Stress in fish. Academic Press, London. pp. ۲۴۷-۲۷۵. Wedemeyer, G.A., Barton, B.A. and McLeay, D.J. (۱۹۹۰) Stress and acclimation. In: Schreck, C.B. and Moyle, P.B. (Eds.), Methods for fish biology. American Fisheries Society, Bethesda, Maryland. pp. ۴۵۱-۴۸۹. Williot, P., Bronzi, P. and Arlati, G. (۱۹۹۳) A very brief survey of status and prospects of freshwater sturgeon farming in Europe (EEC). In: Ketesmont, P., Billard, R. (Eds.), Workshop on aquaculture of freshwater species (except salmonids), Ghent, Belgium, EAS Special Publication. ۲۰, ۳۲-۳۶.

کلیدواژه ها:

Cortisol ، Glucose ، Handling ، Great Sturgeon (Huso huso) ، Stress