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The use of cage lighting to reduce plasma melatonin in Atlantic salmon (Salmo salar) and its effects on the inhibition of grilsing

Citation

Porter, MJR and Duncan, NJ and Mitchell, D and Bromage, NR, The use of cage lighting to reduce plasma melatonin in Atlantic salmon (Salmo salar) and its effects on the inhibition of grilsing, Aquaculture, 176, (3-4) pp. 237-244. ISSN 0044-8486 (1999) [Refereed Article]

DOI: doi:10.1016/S0044-8486(99)00113-1

Abstract

The effects of additional night time illumination on circulating plasma melatonin levels and maturation were studied in Atlantic salmon maintained in sea cages under commercial conditions. Salmon subjected to additional night-time lighting from November to July had significantly lower dark phase melatonin levels (303.1 ± 6.3 pg/ml) compared to control fish (600.0 ± 53.0 pg/ml) maintained under ambient photoperiod. More importantly, as far as the commercial farmer is concerned, only 6.1% of the group exposed to additional lighting matured compared to 61.5% of the fish in the control group. It is suggested that the clear effect of the additional lights on reducing grilsing in Atlantic salmon is mediated through a reduction in the amplitude of plasma melatonin below a putative threshold level during the subjective dark phase.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Fisheries - Aquaculture not elsewhere classified
Author:Porter, MJR (Dr Mark Porter)
ID Code:35148
Year Published:1999
Web of Science® Times Cited:98
Deposited By:TAFI - Aquaculture
Deposited On:2005-08-03
Last Modified:2011-09-20
Downloads:0

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