Temperature, light intensity and plasma melatonin levels in juvenile Atlantic salmon |
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| Authors: | M. J. R. Porter N. Duncan S. O. Handeland S. O. Stafansson N. R. Bromage |
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| Affiliation: | Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, U.K.;Department of Fisheries and Marine Biology, University of Bergen, N-5020, Bergen, Norway |
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| Abstract: | Plasma melatonin synthesis in juvenile Atlantic salmon Salmo salar decreased with increasing light intensity. Melatonin profiles reflected accurately the photoperiod under which the salmon were maintained. Groups maintained at 12°C showed significantly higher ( P < 0·01) levels of dark phase plasma melatonin compared with the groups maintained at 4°C. |
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| Keywords: | Atlantic salmon temperature melatonin photoperiod |
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