Investigation the exploitation status of Sphyraena jello (Cuvier 1829) in Northern waters Oman Sea (Sistan & Baluchistan Province)

Abstract

Introduction: In the present study, population characteristics of Sphyraena jello were
evaluated by sampling fish at five fish landing sites in the northern Oman sea (Iran) including
Beris, Ramin, Pozm, Konarak and Jask from April 2020 to February 2021.
Materials & Methods: The biometric analysis was performed on more than 301 fish.
Results: Growth and mortality indices were calculated including infinite length (L∞ = 155 cm),
growth coefficient (K = 0.55 (yr-1)), growth performance index (Ф= 4.14), natural mortality
(M= 0.74 (yr-1)), fishing mortality (F = 1.46 (yr-1)), total mortality (Z = 2.20±0.29 (yr-1)) and
exploitation coefficient (E = 0.67 (yr-1)). Relative production per recruitment, relative biomass
per recruitment and exploitation rate of S. jello were Y'/Rp = 0.05, B'/Rp = 0.18.
Conclusion: The present study showed that the stock conditions of this species is under of
moderate.