Growth and production potential of young grouper Epinephelus tauvina (Forskal) reared in fixed net cages

Ameer Hamsa, K M S and Mohamad Kasim, H (1992) Growth and production potential of young grouper Epinephelus tauvina (Forskal) reared in fixed net cages. Journal of the Marine Biological Association of India, 34 (1&2). pp. 271-277.

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Abstract

Growth of Epinephelus tauvina was studied in the fixed cage culture system in Mandapam (Gulf of Mannar) coastal waters employing net cages of 5 x 5 x 2 m dimension made of HDPE net material with 20 mm mesh size. The fishes were fed with trash-fish once in 2 days arid the culture period varied from 163 days to 334 days. The average growth increment in length was 145.5 mm in 8.71 months at the rate of 16.3 mm/month and the average growth increment in weight was 413.9 g at the rate of 47.5 g/month. The basic growth data were subjected to various statistical analysis and different para- meters have been estimated. The asymptotic growth Loc is 671 mm, the growth constant K is 0.4619 and the age at 0 k*gth t«^is assumed to be O. The life span is estimated to be 10.7 yrs and the natural mortality coefficient M is 0.4333 at 1 % survival level. The optimum age for harvesting is estimated to be 3 yrs and the optimum culture period which can yielo the highest production for this species is 28 months for the prevailing age at stocking of 8 months. The cost and return of this culture technique is also discussed.

Item Type:Article
Uncontrolled Keywords:groupers; epinephelus tauvina; cages
Subjects:Aquaculture > Mariculture
Demersal Fishes > Groupers
Divisions:CMFRI-Cochin > Mariculture
ID Code:965
Deposited By:Edwin Joseph
Deposited On:09 Jun 2010 09:36
Last Modified:09 Jun 2010 09:36

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