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Age and growth of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in Queensland east-coast waters with implications for stock structure

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Begg, G. A. and Sellin, M. J. (1998) Age and growth of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in Queensland east-coast waters with implications for stock structure. Marine and Freshwater Research, 49 (2). pp. 109-120. ISSN 1323-1650

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Article Link: https://doi.org/10.1071/MF97057

Abstract

Age and growth of school mackerel (Scomberomorus queenslandicus) and spotted mackerel (S. munroi) in east-coast waters, Queensland, Australia (16˚S to 28˚S), were determined to provide population parameters required for stock assessment and fisheries management. Female school mackerel (L∞ = 651 mm, K = 0.59, t0 = –1.41) were estimated to grow to a greater asymptotic length, but at a slower rate, than males (L∞ = 628 mm, K = 0.71, t0 = –1.26). Growth patterns of school mackerel differed between geographic regions and suggested the existence of separate stocks throughout the east-coast distribution. In contrast, female spotted mackerel (L∞ = 849 mm, K = 0.46, t0 = –1.54) were estimated to reach a greater asymptotic length at a faster rate than males (L∞ = 768 mm, K = 0.23, t0 = –4.33). There was no difference in growth between spotted mackerel from different regions, suggesting that there is a single stock along the Queensland east coast. Identification of school and spotted mackerel populations in Queensland east-coast waters will enable the species to be managed on the basis of stock structure across this range.

Item Type:Article
Keywords:otolith; fisheries; management
Subjects:Aquaculture and Fisheries > Fisheries > Fishery management. Fishery policy
Aquaculture and Fisheries > Fisheries > Fishery for individual species
Live Archive:17 Mar 2024 23:07
Last Modified:17 Mar 2024 23:07

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