The effect of gillnet twine thickness on catching efficiency and selectivity for common carp (Cyprinus carpio Linnaeus, 1758) fishery in Marmara Lake
-
Published:2022-06-15
Issue:2
Volume:39
Page:88-96
-
ISSN:2148-3140
-
Container-title:Ege Journal of Fisheries and Aquatic Sciences
-
language:
-
Short-container-title:EgeJFAS
Author:
Dereli HakkıORCID, Kebapçıoğlu TurhanORCID, Şen YusufORCID, Ölçek Zeki SerkanORCID, Dinçtürk EzgiORCID, Ulman AylinORCID
Abstract
The effects of multifilament gillnet twine thickness on selectivity and catching efficiency for the common carp fishery were investigated in this study. Sampling was carried out with multifilament gillnets of two different twine thicknesses (with 210d/2 and 210d/3) on 140, 150, 160, 180, 200 mm mesh sizes between June 2015 and December 2016 in Marmara Lake, located in Western Turkey. Higher modal lengths and lower catch per unit effort (CPUE) values and lower sub-minimum landing size (MLS) individuals rate (excluding 180 and 200 mm mesh sizes) were obtained in the thick multifilament material (210d/3) with the same mesh size compared to thin material (210d/2). All mesh sizes in both twine thickness provided modal lengths above the MLS. However, the thin twine material had a higher nominal percentage of undersized fish (8%), greater than the 5% accepted limit for total catches when all mesh sizes are considered together. As a result, the modal lengths and spread values increased and the selectivity and catching efficiency decreased with the thicker twine material.
Publisher
Ege University Faculty of Fisheries
Subject
General Earth and Planetary Sciences,General Environmental Science
Reference37 articles.
1. Anonymous. (2020). Notification 5/1 regulating (2020/20) commercial fishing for 2020-2024. The Republic of Turkey, Ministry of Agriculture and Forestry, General Directorate of Fisheries and Aquaculture. 69p. (in Turkish). 2. Aras, S. (2015). The investigation of effect of twine thickness on selectivity of gillnets used carp (Cyprinus carpio L., 1758) catching. Master's Thesis, Tunceli University, Turkey, (in Turkish). 3. Armstrong, D.W., Ferro, R.S.T., MacLennan, D.N., & Reeves, S.A. (1990). Gear selectivity and the conservation of fish. Journal of Fish Biology, 37, 261-262. DOI: 10.1111/j.1095-8649.1990.tb05060.x 4. Ayaz, A., Altinagac, U., Ozekinci, U., Ozen, O., Altın, A., & Ismen, A. (2011). Effect of twine thickness on selectivity of gillnets for bogue, Boops boops, in Turkish waters. Mediterranean Marine Science, 12(2), 358-368. DOI: 10.12681/mms.37 5. Aydın, C., Cilbiz, C., İlhan, A., & Sarı, H.M. (2016). Selectivity of multifilament trammel and gillnets for common carp (Cyprinus carpio L., 1758) in Lake Marmara. Ege Journal of Fisheries and Aquatic Sciences, 33(3), 183-192. DOI: 0.12714/egejfas.2016.33.3.01
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|