Cold shocks: a stressor for common carp

Journal of Fish Biology - Tập 57 Số 4 - Trang 881-894 - 2000
Michael W.T. Tanck1, G.H.R. Booms1, E.H. Eding1, S. E. Wendellar Bonga2, J. Komen1
1Fish Culture and Fisheries group, Wageningen Institute of Animal Sciences (WIAS), Wageningen University, P.O. Box 338, 6700 AH Wageningen, The Netherlands
2Department of Animal Physiology, University of Nijmegen, Nijmegen, The Netherlands

Tóm tắt

The stress response of common carp Cyprinus carpio was studied by evaluating plasma cortisol, glucose and lactate after single or multiple rapid temperature drops (ΔT: 7, 9 or 11° C). All three amplitudes used induced a significant rise in plasma cortisol levels. Peaks occurred within 20 min after onset of the cold shock. No stress‐related secondary metabolic changes were observed in any of the experiments described: plasma glucose levels remained unaffected and plasma lactate levels dropped. Carp of 60 days old showed a significant stress response, although plasma cortisol levels were lower than those observed in carp of 120 days. Furthermore, fish that had experienced multiple cold shocks showed an overall lower cortisol response than fish experiencing a single cold shock, indicating that habituation to this stressor occurred.

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Thông tin xuất bản

Journal of Fish Biology

Tập 57 Số 4

881-894

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