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Population Dynamics of the Tigertooth croaker, Otolithes ruber in the Persian Gulf Public Deposited

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  • Growth parameters and mortality of the tigertooth croaker (Otolithes ruber) were estimated from length frequency data collected during trawl surveys in the Persian Gulf (Bushehr waters) from 1997-1998. LFDA and FiSAT Programs were used for data analyses. Growth parameters were estimated as L∞ = 58 cm and K = 0.8 per year. The estimate of total mortality is Z = 2.7 year⁻¹ giving a fishing mortality of F=1.46 year⁻¹ and on exploitation ratio of E = 0.55. Natural mortality was estimated from the Pauly’s formula (1980) which resulted in M=1.24 year⁻¹. Biomass estimation of swept area survey in 1994 was applied to calculate MSY. The MSY of Otolithes ruber is assessed between 145.8-154.4 tonnes. Results of the research indicate the fishery is operating very close to its maximum sustainable yield (MSY) level and that no further increase in fishing effort is advisable.
  • Keywords: Fisheries Economics, Theoretical and Empirical Bio-Economic Modelling
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  • Niamaimandi, Nassir. 2002. Population Dynamics of the Tigertooth croaker, Otolithes ruber in the Persian Gulf. In: Proceedings of the Eleventh Biennial Conference of the International Institute of Fisheries Economics and Trade, August 19-22, 2002, Wellington, New Zealand: Fisheries in the Global Economy. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2002. CD ROM.
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