GROWTH, MORTALITY AND YIELD-PER-RECRUIT OF THE RABBIT FISH, SIGANUS RJVULA TUS, FROM THE EASTERN SIDE OF THE GULF OF SUEZ, SINAI COAST, RED SEA

Document Type : Original Article

Authors

1 National Institute of Oceanography and fisheries, B.O. Box 182, Suez,

2 Marine Science Department, Faculty of Science, Suez Canal University

Abstract

Length-based methods were used to study the growth of the rabbit fish Siganus rivulatus, in the eastern side of the Gulf of Suez. A total of 600 specimens were collected from the small-scale artisnal fishery landed in Al-Tur region during the period from March 2000 to February 2001. Length frequency distributions were analyzed and normal components were discriminated. The estimated von
Bertalanffy growth parameters were L« = 29.409 cm, K = 0.735 y-1 and .to - - 0.22 y. The growth performance index (G>) was 2.803. The instantaneous total, natural and fishing mortality coefficients were 3.15, 1.431 and 1.72 respectively! The Beverton and Holt (1966) yield-per-recmit model was conducted in order to evaluate the status of the fishery. The results indicated that the Siganus rivulatus resource in the Gulf of Suez is slightly overexploited (E = 0.55).

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