Stock assessment and management of the rabbitfish Siganus rivulatus from the Southern Red Sea, Egypt | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 23, Volume 22, 5 (Special Issue), November 2018, Page 323-329 PDF (3.39 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2018.22061 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Sahar Mehanna 1; Ashraf S. Mohammad1; Samia M. El-Mahdy2; Yassein A.A. Osman2
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| 1Fisheries management, National Institute of Oceanography and Fisheries | ||||
| 2National Institute of Oceanography and Fisheries, Egypt | ||||
| Abstract | ||||
| Rabbitfishes, family Siganidae, are one of the most abundant fishes inhabiting the Red Sea and now widely distributed in the Mediterranean. Age and growth of Siganus rivulatus, the most common species, were studied from samples collected randomly between October 2017 and October 2018 from Shalatein landing site. Otoliths of 2000 specimens were used for age determination and the maximum attained age for this species was four years. The von Bertalanffy growth parameters L∞, K and to and the instantaneous annual rates of total, natural and fishing mortality were estimated and consequently the exploitation rate was determined. It is found that the current exploitation level is higher than the optimum one reflecting the intensive exploitation of S. rivulatus in the Southern Red Sea, Egypt. Yield per recruit analysis revealed that fishing effort should be decreased. This can be adopted through closed seasons/areas, increase of mesh size, increase of minimum landing size and setting of a total allowable catch (TAC). | ||||
| Keywords | ||||
| Red Sea; Siganus rivulatus; rabbitfish; Stock assessment; Management | ||||
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