Studies On Growth And Stock Assessment Of Gold-Saddle Goatfish Parupeneus Cyclostomus (Lacepède, 1801) Along The Eastern Coastline Of The United Arab Emirates

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Elsayed Farrag, Ahmed Al-Zaabi, Carter Subbiah

Marine Environment Research Department, Ministry of Climate Change and Environment (MOCCaE), United Arab Emirates

A total of 899 samples of Parupeneus cylostomus were collected from landing sites of eastern coastline of the United Arab Emirates from January to December 2017. Total length of individual fish samples was measured and analyzed using FiSAT II software. Von Bertalanffy growth parameters were estimated at asymptotic length L= 43.29 cm, growth rate K = 0.47 per year, the theoretical age at length zero to = −0.30 year and growth performance index Φ=2.63. The length at first capture was estimated at 23.17 cm. The estimated value of total mortality based on length converted catch curve is Z = 1.86 per year. Natural mortality based on growth parameters and mean environmental temperature estimated at M = 0.98 per year. Furthermore, the annual instantaneous fishing mortality rate of 0.88 per year was by far in excess of the precautionary target Fopt= 0.39 per year and limit Flimit= 0.65 per year biological reference points, indicating that the resource was over-exploited. The exploitation ratio E = 0.47 is higher than the exploitation which maintain the 50% of the stock E0.5.