Spawning period and growth of yellowfin bream, Acanthopagrus australis (Günther), in Moreton Bay, Australia |
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Authors: | B. R. Pollock |
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Affiliation: | Fisheries Research Branch, Department of Primary Industries, Transport House, Fortitude Valley, Queensland, Australia |
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Abstract: | Monthly changes in the gonosomatic index indicate that yellowfin bream, Acanthopagrus australis , in Moreton Bay have a short spawning season with a peak during the period July to August each year. The growth rate of A. australis was estimated from tag-recapture data and by length-frequency analysis. Modes representing age classes 0, I and II often appeared in length-frequency distributions, however modes for older age classes were difficult to identify. The von Bertalanffy growth curve parameters calculated from release–recapture data are: L∞ = 29.5 cm; K = 0.51; t 0=– 0.32 years. |
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