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Stress responses in sub-yearling great sturgeon to the air exposure | ||
| Caspian Journal of Environmental Sciences | ||
| مقاله 4، دوره 5، شماره 2، تیر 2007، صفحه 99-103 اصل مقاله (120.57 K) | ||
| نویسندگان | ||
| N.H. Solati؛ Bahram Falahatkar | ||
| Fisheries Department, Faculty of Natural Resources, University of Guilan, Iran | ||
| چکیده | ||
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 6 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 10.8 ? 3.3 to 14.6 ? 9.0 ng ml-1 (P<0.05). Indeed, average of glucose concentration was 56.4 ? 12.0 pre-stress exposures and reached to 111.6 ? 17.5 mg dl-1 post-stress (P<0.05). 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. 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(2000) 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. 57, 391-401. Keyvan, A. (2003) Iranian sturgeons in the Caspian Sea. Naghsh Mehr Publication, 400 p. (In Persian) Kozlov, V.I. (1993) Sturgeon farming. VNIRO, Moscow. 63 p. Pankhurst, N.W. and Sharples, D.F. (1992) Effects of capture and confinement on plasma cortisol concentrations in the snapper, Pagrus auratus. Aust. J. Mar. Freshwater Res. 43, 345-356. Pickering, A.D. and Pottinger, T.G. (1987) Poor water quality suppresses the cortisol response of salmonid fish to handling and confinement. Journal of Fish Biology. 30, 363-374. Pickering, A.D., Pottinger, T.G., Carragher, J. and Sumpter, J.P. (1987) 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. 68, 249-259. Pottinger, T.G. 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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. (1981) Methods for determining the tolerance of fishes Solati & Falahatkar 103 to environmental stressors. In: Pickering, A.D. (Ed.), Stress in fish. Academic Press, London. pp. 247-275. Wedemeyer, G.A., Barton, B.A. and McLeay, D.J. (1990) Stress and acclimation. In: Schreck, C.B. and Moyle, P.B. (Eds.), Methods for fish biology. American Fisheries Society, Bethesda, Maryland. pp. 451-489. Williot, P., Bronzi, P. and Arlati, G. (1993) 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. 20, 32-36. | ||
| کلیدواژهها | ||
| Cortisol؛ Glucose؛ Handling؛ Great Sturgeon (Huso huso)؛ Stress | ||
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