Journal of Wetland Ecobiology
Volume 16, Issue 4 (Winter 2025)
2025, 16(4): 65-77 |
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paighambari S Y, mollashahi H, zare P. The efficiency gill net in catch of fish types in the Bustan dam lake, Golestan province. Wetland Ecobiology 2025; 16 (4) : 5
URL: http://jweb.ahvaz.iau.ir/article-1-1098-en.html
URL: http://jweb.ahvaz.iau.ir/article-1-1098-en.html
Gorgan University of Agricultural Sciences and Natural Resources
Abstract: (384 Views)
This study aimed to investigate the efficiency of gillnets in different seasons in the lake behind the Bostan Dam, Golestan Province, from winter 2018 to autumn 2019. The gillnets used were monofilament with lengths of 50, 100, 120, 150, and 200 meters, heights of 2, 2.5, 3, 4, and 5 meters, and mesh sizes of 60, 80, and 100 mm. A total of 759 fish of various species, including common carp (Cyprinus carpio), black carp (Capoeta razii), crucian carp (Carassius gibelio), grass carp (Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix), bighead carp (Hypophthalmichthys nobilis), and bulatmai barbel (Luciobarbus capito), were caught by fishermen. The results of the analysis of variance of the cpue values of different species using gillnets with varying meshes in the winter of 2018, spring of 2019, summer of 2019, and autumn of 2020 showed that, according to the p value obtained, the cpue values of different species caught using gillnets with different meshes in different seasons have significant differences. In the present study, according to the results of comparing the average values of the fishing effort with gillnets in different seasons, the CPUE of common carp with gillnets with 100 mm mesh was significantly higher than the catch with gillnets with 60 and 80 mm meshes, and the CPUE of crucian carp with 60 mm mesh was higher than the other two meshes. The results of this study show that the mesh size of the net has a significant difference in the catch rate in different seasons and also affects the composition of the catch.
Article number: 5
Type of Study: Research |
Subject:
Special
Received: 2025/08/25 | Accepted: 2025/12/13 | Published: 2025/12/14
Received: 2025/08/25 | Accepted: 2025/12/13 | Published: 2025/12/14
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