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Latitudinal and seasonal effects on growth of the Australian eastern king prawn (Melicertus plebejus)

Lloyd-Jones, Luke R. and Wang, You-Gan and Courtney, Anthony J. and Prosser, Andrew J. and Montgomery, Steven S. (2012) Latitudinal and seasonal effects on growth of the Australian eastern king prawn (Melicertus plebejus). Canadian Journal of Fisheries and Aquatic Sciences, 69 (9). pp. 1525-1538.

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Publisher URL: http://www.nrcresearchpress.com/doi/pdf/10.1139/f2012-072

Abstract

The growth of the Australian eastern king prawn (Melicertus plebejus) is understood in greater detail by quantifying
the latitudinal effect. The latitudinal effect is the change in the species’ growth rate during migration. Mark–recapture
data (N = 1635, latitude 22.21°S–34.00°S) presents northerly movement of the eastern king prawn, with New South Wales
prawns showing substantial average movement of 140 km (standard deviation: 176 km) north. A generalized von Bertalanffy
growth model framework is used to incorporate the latitudinal effect together with the canonical seasonal effect. Applying
this method to eastern king prawn mark–recapture data guarantees consistent estimates for the latitudinal and seasonal effects.
For M. plebejus, it was found that growth rate peaks on 25 and 29 January for males and females, respectively; is at a
minimum on 27 and 31 July, respectively; and that the shape parameter, k (per year), changes by –0.0236 and –0.0556 every
1 degree of latitude south increase for males and females, respectively.

Item Type:Article
Business groups:Animal Science
Subjects:Aquaculture and Fisheries > Fisheries > By region or country > Australia
Aquaculture and Fisheries > Fisheries > Fishery research
Deposited On:24 Jul 2013 01:48
Last Modified:07 Jun 2015 15:09

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