Investigation the biological characteristics of Black Pomfret Parastromateus niger (Bloch, 1795) in coastal waters of Sistan and Baluchistan province (Oman Sea)

Document Type : scientific research article

Authors

1 Ph.D. Student, Dept. of Aquatics Production and Exploitation, College of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

2 . Corresponding Author, Associate Prof., Dept. of Aquatics Production and Exploitation, College of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

3 Professor, Dept. of Marine Environmental Science, Faculty of Fisheries Sciences, Hokkaido University Fisheries Sciences, Japan.

4 Assistant Prof., Dept. of Fisheries, Faculty of Agriculture, University of Sultan Ageng Tirtayasa, Banten, Indonesia.

5 Assistant Prof., Dept. of Fisheries, Faculty of Marine Science, Chabahar Maritime University, Chabahar, Iran.

6 Assistant Prof., Dept. of Aquatics Production and Exploitation, College of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

Abstract

Black Pomfret (Parastromateus niger) is one of the most important commercial species along the coast of the Oman Sea. In this study, the length frequency, weight, length-girth relationship, infinite length (L_∞) and optimum length were investigated in the coastal waters of Sistan and Baluchistan. Sampling were carried out from November to December 2020. The length range of Black Pomfret was 18-45.40 cm and its optimum length was 29.6 cm. The minimum and maximum weight was 112-1900 g with a mean weight of 396.453 g in Black Pomfret. The length-weight relationship of Black Pomfret was calculated as W= 0.0094TL3.2016. The correlation coefficient (R2) was 0.9622. The results showed that the calculated value of b parameter (3.2016), which indicates the natural growth of this species in Oman Sea, is positive allometric. The total length-girth relationship of Black Pomfret was calculated as Gmax=1.0555Gg+1.7124. The correlation coefficient (R2) was 0.9247. The L_∞was estimated at 47.3 cm. The length maturity (Lm50) of Black Pomfret was calculated to be 26.6 cm, and 65% of the fish caught were immature and did not have a chance to spawn. With studies and long-term planning of these stocks and the information related to the length frequency, weight, length-weight relationships, length-girth relationships and optimum length can have a great impact on the knowledge of the stocks of these fish and reduce fishing pressure on aquatic resources such as black Pomfret in Sistan and Baluchistan province.

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Main Subjects

References

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Journal of Utilization and Cultivation of Aquatics
Volume 13, Issue 1
April 2024
Pages 45-59

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