The study of some characteristics of population dynamics and fishing status of common carp (Cyprinus carpio Linnaeus, 1758) in the southeastern part of the Caspian Sea (Golestan province) in the years 1395-1400

Document Type : scientific research article

Authors

1 Research Instructor, Inland Waters Aquatics Resources Research Center-Gorgan, Iranian Fisheries Sciences Research Institute, Agricultural Research Education and Extension Organization (AREEO), Gorgan, Iran

2 Corresponding Author, Professor, Dept. of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran

3 Assistant Prof., Dept. of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran.

4 Professor, Dept. of Aquatics Production and Exploitation, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

5 Professor, Dept. of Fisheries, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad. Kavous, Iran.

6 Research Assistant Professor, Gorgan Inland Waters Aquatic Resources Research Center, Gorgan, Iran

Abstract

Article Info ABSTRACT
Article type:
Full Length Research Paper
Article history:
Received: ------------
Revised: ------------
Accepted: ------------
Keywords:
Caspian Sea,
Catch reduction pattern
Common carp,
Population dynamics
The common carp (Cyprinus carpio Linnaeus, 1758) is an important and valuable species in the Caspian Sea , whose catch has unfortunately decline sharply in recent years. In this research, the decline in catches of this species was investigated using catch per unit effort (CPUE) data from 1395 to 1400. The fork length of the samples varied from year to year , ranging from 17 to 75 cm during the six year study period. The dynamic parameters also varied in different years and did not follow a fixed pattern. The current fishing mortality rate compared to the biological reference points showed that the current fishing trend is higher than the optimal mortality coefficients and the mortality limit. The results indicate a critical situation for the future of the carp fishery. The continuation of this fishing policy will lead to a strong reduction and destruction of the stock.

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Main Subjects

References

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Journal of Utilization and Cultivation of Aquatics
Volume 14, Issue 2
July 2025
Pages 88-104

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