Study of biological characterizes of reproductive of Silver Pomfret, Pampus argenteus (Euphrasen, 1788) in northern waters of Persian Gulf and Oman Sea (Hormozgan Province)

This study aimed to determine Biological and reproductive characteristics of Silver pomfret, Pampus argenteus (Euphrasen, 1788) in the Persian Gulf and the Oman Sea waters (around of Qeshm Island). Sampling was carried out using fishing gears including: trawl, gillnet, and fishing traps (Moshta) during 12 months from April to March 2018. 955 specimens were weighed and 565 specimens were transferred to the laboratory, for biological and reproductive cycle study. The maximum average length and weight body for males was 18.08 cm and 263.7 gr, respectively, observed in May and for females was 22.77 cm and 488.09 gr, respectively, observed in July. The results of Kolmogorov-Smirnov test showed that the length distribution frequency of female was not significantly different between winter and spring seasons (DKs = 1.34, P = 0.054). For males, there was a significant difference among all the season that examined. There was a significant difference in male to female sex ratio during the one year (1.49). For both sex, four cohorts were diagnosed using the Bhattacharya's method. Length at first sexual maturity for males and females was calculated 18.12 cm and 20.84 cm, respectively. It is concluded that the reproductive activity of this species is highest from April to August. According to the results of this study, it is suggested that fishing activities should be stopped during these months to protect the stock of this species.