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Age, growth and feeding of the blue hottentot Pachymetopon aeneum (Pisces:Sparidae) with notes on reproduction
Citation
Buxton, CD and Clarke, JR, Age, growth and feeding of the blue hottentot Pachymetopon aeneum (Pisces:Sparidae) with notes on reproduction, South African Journal of Zoology, 21, (1) pp. 33 -38. ISSN 0254-1858 (1986) [Refereed Article]
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Copyright Statement
Copyright © 1986, The Zoological Society of Southern Africa
Official URL: http://www.zssa.co.za
Abstract
The sparid Pachymetopon aeneum is a benthic carnivore
feeding predominantly on hydroids, runicates and octocorais,
Juveniles and subadults occur on shallower reefs than the
adults but the diet of all sizes is similar, The species is a
protogynous hermaphrodite, sex reversal occurring between
200 and 300 mm forklength. Fifty per cent maturity in
females occurs between 200 and 250 mm forklength. Peak
reproductive activity was recorded between September and
March. Otoliths were used to determine growth rate.
Growth in length was described by the equation,
L.(mm) = 467,06t1 - e-0.1328(t··0.24731). The relationship
between length and weight, W(g) = 0,00001 L(mm)3,149,
was used to determine somatic growth as, W(g) =
2545,98(1 .e-0.1328(t-0.2473»))3 .149,. P. aeneum have a
potential for exploitation but the combination of late
maturation and protogynous hermaphroditism could lead
to over-exploitation in a size-selective fishery.
Item Details
Item Type: | Refereed Article |
---|---|
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Fisheries sciences not elsewhere classified |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the environmental sciences |
UTAS Author: | Buxton, CD (Professor Colin Buxton) |
ID Code: | 49221 |
Year Published: | 1986 |
Web of Science® Times Cited: | 28 |
Deposited By: | TAFI - Marine Research Laboratory |
Deposited On: | 2007-08-01 |
Last Modified: | 2010-01-20 |
Downloads: | 13 View Download Statistics |
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