Fisheries biology of the haffara bream Rhabdosaragus haffara (Family: Sparidae) in Suez Bay, Egypt.

M. Osman, Hanan; A. Saber, Mahmoud; A. El Ganainy, Azza; M. Shaaban, Amgad

doi:10.21608/ejabf.2020.99634

Fisheries biology of the haffara bream Rhabdosaragus haffara (Family: Sparidae) in Suez Bay, Egypt.

Document Type : Original Article

Authors

10.21608/ejabf.2020.99634

Abstract

Family Sparidae is considered as one of the most commercial families of the small scale fishery of Suez bay. A Total of 800 specimens of Rhabdosaragus haffara were collected from the Suez bay landing site, El-salakhana, during the fishing season 2018-2019. The length-weight relationship equation is W=0.014L^3.02 indicating an isometric growth. Age was determined by reading otoliths and revealed that the population has five age groups. The Von Bertlanffy equation was as follow; L_t = 27 (1-e^{-0.43(t+0.27)}). Length at first capture L_C= 13.0cm. The growth performance index (Φ) was estimated as 2.49. Total mortality was estimated to be Z=1.7, natural mortality is M=0.65, fishing mortality F= 1.05, and Exploitation rate is E= 0.62.The target and limit biological reference points are: F_Opt=0.32 year⁻¹ and F_Limit = 0.43 year⁻¹. Exploitation rate, F_Opt, and F_Limitindicated that the stock of R. haffara in Suez bay is overexploited and threatened.

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