Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8875216 | The Egyptian Journal of Aquatic Research | 2018 | 5 Pages |
Abstract
The population structure of three Nemipterid species (Nemipterus japonicus, Nemipterus bipunctatus and Nemipterus zysron) from the Gulf of Suez was investigated. A total of 3663 specimens (2597â¯N. japonicus, 576â¯N. bipunctatus and 490â¯N. zysron) were collected during the fishing season 2014/2015 in the Gulf of Suez. The maximum life span estimated from otolith reading was 5â¯years for N. japonicus and N. bipunctatus while, it was 4â¯years for N. zysron. The parameters of von Bertalanffy growth equation were Lââ¯=â¯31.66â¯cm, Kâ¯=â¯0.24â¯yearâ1 and toâ¯=â¯â1.2â¯year for N. japonicus; Lââ¯=â¯29.55â¯cm, Kâ¯=â¯0.26â¯yearâ1 and toâ¯=â¯â1.2â¯year for N. bipunctatus and were Lââ¯=â¯24.69â¯cm, Kâ¯=â¯0.38â¯yearâ1 and toâ¯=â¯â0.84â¯year for N. zysron. The estimated exploitation rate for the three species exceeded the optimum exploitation rate, indicating an overexploitation of the nemipterid species in the Gulf of Suez. The yield per recruit analysis revealed that the fishing pressure of the trawling fleet in the Gulf of Suez, has overridden the critical level. Findings suggest that decrease in the fishing effort of trawl fishery and increase the length of the mesh size is required for the protection of the nemipteridae resources in the Gulf.
Related Topics
Life Sciences
Agricultural and Biological Sciences
Agricultural and Biological Sciences (General)
Authors
A.A. El-Ganainy, M.T. Khalil, E.E.E. El-Bokhty, M.A. Saber, F.A.A. Abd El-Rahman,