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The effect of photoperiod on growth, survival, colour and activity of juvenile southern rock lobster, Jasus edwardsii


Crear, BJ and Hart, PR and Thomas, CW, The effect of photoperiod on growth, survival, colour and activity of juvenile southern rock lobster, Jasus edwardsii, Aquaculture Research, 34, (6) pp. 439-444. ISSN 1355-557X (2003) [Refereed Article]

DOI: doi:10.1046/j.1365-2109.2003.00829.x


Juvenile (1-10 g) southern rock lobsters. Jasus edwardsii, were subjected to five photoperiods [0L(light):24D(dark); 6L:18D; 12L:12D: 18L:6D; 24L:0D] during a 112-day trial, and growth, survival, colour, food consumption and activity were examined. Lobsters grown under the 6L:18D and 24L:0D photoperiods had significantly lower (P < 0.05) final mean weight and specific growth rate than any other treatments. Photoperiod had no effect on survival or colour of lobsters. Food consumption differed significantly during the first week of the trial; after 5 weeks, food consumption was similar in all treatments. Major peaks in activity occurred during dark periods for lobsters exposed to photoperiods that had a light:dark regime. Activity of lobsters exposed to continuous light or dark regimes remained constant and at low levels during the 24-h period. Food consumption or activity does not appear to determine the rate of growth of lobsters in the different photoregimes. One over-riding outcome of this and other studies on photoperiod is that the growth and survival response of juvenile J. edwardsii was not significantly better than those of the standard 12L:12D cycle.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food 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
UTAS Author:Crear, BJ (Mr Bradley Crear)
UTAS Author:Hart, PR (Dr Piers Hart)
UTAS Author:Thomas, CW (Mr Craig Thomas)
ID Code:28566
Year Published:2003
Web of Science® Times Cited:19
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2003-08-01
Last Modified:2004-04-07

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