2
Coldwater Fishes Research Center, Regional Lead Center of NACA, Tonekabon, Iran
3
Offshore Fisheries Research Center
Abstract
Due to the importance of the issue and the role of O. ruber in the economics of the local fishing community, a comparative analysis of the efficiency of gillnets used was needed. The size of gillnet meshes studied included 57 mm (1.4 inches), 64 mm (1.2 inches), 83 mm (1.3 inches), 89 mm (3.5 inches) and 95 mm (3.4 inches) of monofilament and multi-filament yarns, depending on the type of net, that were compared by length frequency data collected at sample landing sites during routine visits. With an increasing in the meshes sizes, the mean length (total length) of O. ruber also increased, in which the smallest mean length (25.41 cm) was observed for mesh size of 57 mm and the largest (39.7 cm) for the gillnets with mesh size of 95 mm. The percentage frequency of fish smaller than the minimum legal size (41 cm) was fluctuated between 57.0% for mesh size of 95 mm to 96.2% for the 57 mm one, indicating the inappropriateness of the existing gillnets. Catch of fish with minimum legal size was higher in monofilament netting yarns compared to the multifilament one. In order to ensure the sustainability of catching Tigertooth croaker, the implementation of the ban on the use of all existing gillnets is imperative. Suggestion of optimum mesh size can be provided if field experiments are made by comapring some knids of mesh sizes according to the selectivity models.
Hosseini, S. A., Azhir, M. T., & Ajang, B. (2020). Applying limitations on gillnet fishery for Tiger tooth croaker (Otolithes ruber) in the northern Oman Sea. Journal of Marine Fishes, 4(1), 26-33.
MLA
Seyed Abbas Hosseini; mohammad taghi Azhir; Bijan Ajang. "Applying limitations on gillnet fishery for Tiger tooth croaker (Otolithes ruber) in the northern Oman Sea". Journal of Marine Fishes, 4, 1, 2020, 26-33.
HARVARD
Hosseini, S. A., Azhir, M. T., Ajang, B. (2020). 'Applying limitations on gillnet fishery for Tiger tooth croaker (Otolithes ruber) in the northern Oman Sea', Journal of Marine Fishes, 4(1), pp. 26-33.
VANCOUVER
Hosseini, S. A., Azhir, M. T., Ajang, B. Applying limitations on gillnet fishery for Tiger tooth croaker (Otolithes ruber) in the northern Oman Sea. Journal of Marine Fishes, 2020; 4(1): 26-33.
)