caa a22 4500 477117279 CHVBK 20180405111626.0 cr unu---uuuuu 170330e19961101xx s 000 0 eng 10.1007/BF01875582 doi (NATIONALLICENCE)springer-10.1007/BF01875582 Stress responses of Atlantic salmon ( Salmo salar L.) elicited by water level reduction in rearing tanks [Elektronische Daten] [Ingibörg Einarsdóttir, Kjell Nilssen] The Atlantic salmon (Salmo salar) stress response was examined by measuring plasma cortisol, glucose and chloride in fish after water level reduction within rearing tanks. Maximum plasma cortisol levels (366±43 (SD) nM and 534±280 nM for Groups 1 and 2, respectively) were observed 20 min after application of the stressor. Cortisol levels were down to control levels 24 h later. The pattern for cortisol changes observed within these two groups were comparable. Plasma glucose and chloride concentrations did not change significantly in either of the experimental groups. The fish in group 2 were then repeatedly subjected to the same stressor every third day. After the fifth exposure to the stressor, blood was obtained from fish at times corresponding to sampling after the first exposure. Their maximum plasma cortisol level only reached 223 (±96) nM, and was down to prestress levels within 2 h. Plasma glucose and chloride concentrations did not change significantly in this second experiment. This challenge test revealed an acute primary response in Atlantic salmon without any apparent harmful secondary responses, that may thus serve as a standardized reference stressor using other fish groups under comparable conditions. Kugler Publication, 1996 Atlantic salmon nationallicence salmonids nationallicence stress nationallicence cortisol nationallicence Einarsdóttir Ingibörg Brattøra Research Centre, Department of Zoology, Norwegian University of Science and Technology, Gryta 2, N-7010, Trondheim, Norway aut Nilssen Kjell Brattøra Research Centre, Department of Zoology, Norwegian University of Science and Technology, Gryta 2, N-7010, Trondheim, Norway aut Fish Physiology and Biochemistry Kluwer Academic Publishers 15/5(1996-11-01), 395-400 0920-1742 15:5<395 1996 15 10695 https://doi.org/10.1007/BF01875582 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01875582 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Einarsdóttir Ingibörg Brattøra Research Centre, Department of Zoology, Norwegian University of Science and Technology, Gryta 2, N-7010, Trondheim, Norway aut NATIONALLICENCE 700 1- Nilssen Kjell Brattøra Research Centre, Department of Zoology, Norwegian University of Science and Technology, Gryta 2, N-7010, Trondheim, Norway aut NATIONALLICENCE 773 0- Fish Physiology and Biochemistry Kluwer Academic Publishers 15/5(1996-11-01), 395-400 0920-1742 15:5<395 1996 15 10695 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer