Size at maturity and seasonal changes in gonad activity of yellowtail kingfish (Seriola lalandi; Carangidae) in New South Wales, Australia

Gonad development, seasonal changes in gonad activity, and size at maturity were investigated in female and male yellowtail kingfish (Seriola lalandi; Carangidae) collected from New South Wales, Australia between August 1995 and June 1996. Kingfish displayed peak gonad activity in December suggestin...

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Bibliographic Details
Published in:New Zealand journal of marine and freshwater research 1999-09, Vol.33 (3), p.457-468
Main Authors: Gillanders, B. M., Ferrell, D. J., Andrew, N. L.
Format: Article
Language:English
Subjects:
Carangidae
Marine
maturity
reproduction
Seriola
Seriola lalandi
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Summary:Gonad development, seasonal changes in gonad activity, and size at maturity were investigated in female and male yellowtail kingfish (Seriola lalandi; Carangidae) collected from New South Wales, Australia between August 1995 and June 1996. Kingfish displayed peak gonad activity in December suggesting a summer spawning period. Males matured at smaller sizes than females. Females first matured at 698 mm fork length (FL) and 3+ years, but 50% maturity was not attained until 834 mm FL. The smallest recorded mature male was 360 mm FL and the estimated size at which 50% of males were mature was 470 mm FL (0+ years). Many female fish are harvested prior to first reproduction, but the impact of this on the stock remains unclear.
ISSN:0028-8330
1175-8805
DOI:10.1080/00288330.1999.9516891