Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea

Although gillnet fisheries are increasingly common in Korea, few studies have conducted sea trials using tie-down gillnets. Here, we analyzed the mesh size selectivity using tie-down gillnets with four different mesh sizes (84, 90, 105, and 120 mm) to catch blackfin flounders. A total of 10 sea tria...

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Autores principales:	Pyungkwan Kim, Hyungseok Kim, Seonghun Kim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	blackfin flounder tie-down gillnet selectivity master curve Kitahara’s method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/0785b255b2f04391acc4c10885a164fa
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spelling	oai:doaj.org-article:0785b255b2f04391acc4c10885a164fa2021-11-11T14:57:35ZMesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea10.3390/app112198102076-3417https://doaj.org/article/0785b255b2f04391acc4c10885a164fa2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/9810https://doaj.org/toc/2076-3417Although gillnet fisheries are increasingly common in Korea, few studies have conducted sea trials using tie-down gillnets. Here, we analyzed the mesh size selectivity using tie-down gillnets with four different mesh sizes (84, 90, 105, and 120 mm) to catch blackfin flounders. A total of 10 sea trials were conducted at depths of 100–140 m in the waters of Yangyang County, Gangwon Province, Korea, and the catching efficiency and mesh size selectivity were comparatively analyzed. The net with a mesh size of 84 mm showed the highest number of catches (373), followed by the 90-mm (363) and 105-mm (307) meshes. The results of the master curve estimation showed that the larger the mesh size, the higher the total length representing the same retention probability. Therefore, the catch rate of small fish decreased with the increasing mesh size. For the 84-mm net, the 50% selection length for small fish (total length ≤ 170 mm) was estimated at 186.9 mm, which was approximately 17 mm larger than the length limit. The results show that when using tie-down gillnets, the size of the fish caught changed according to the changes in the mesh size.Pyungkwan KimHyungseok KimSeonghun KimMDPI AGarticleblackfin floundertie-downgillnetselectivitymaster curveKitahara’s methodTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 9810, p 9810 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	blackfin flounder tie-down gillnet selectivity master curve Kitahara’s method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	blackfin flounder tie-down gillnet selectivity master curve Kitahara’s method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Pyungkwan Kim Hyungseok Kim Seonghun Kim Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea
description	Although gillnet fisheries are increasingly common in Korea, few studies have conducted sea trials using tie-down gillnets. Here, we analyzed the mesh size selectivity using tie-down gillnets with four different mesh sizes (84, 90, 105, and 120 mm) to catch blackfin flounders. A total of 10 sea trials were conducted at depths of 100–140 m in the waters of Yangyang County, Gangwon Province, Korea, and the catching efficiency and mesh size selectivity were comparatively analyzed. The net with a mesh size of 84 mm showed the highest number of catches (373), followed by the 90-mm (363) and 105-mm (307) meshes. The results of the master curve estimation showed that the larger the mesh size, the higher the total length representing the same retention probability. Therefore, the catch rate of small fish decreased with the increasing mesh size. For the 84-mm net, the 50% selection length for small fish (total length ≤ 170 mm) was estimated at 186.9 mm, which was approximately 17 mm larger than the length limit. The results show that when using tie-down gillnets, the size of the fish caught changed according to the changes in the mesh size.
format	article
author	Pyungkwan Kim Hyungseok Kim Seonghun Kim
author_facet	Pyungkwan Kim Hyungseok Kim Seonghun Kim
author_sort	Pyungkwan Kim
title	Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea
title_short	Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea
title_full	Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea
title_fullStr	Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea
title_full_unstemmed	Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea
title_sort	mesh size selectivity of tie-down gillnets for the blackfin flounder (<i>glyptocephalus stelleri</i>) in korea
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0785b255b2f04391acc4c10885a164fa
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Mesh Size Selectivity of Tie-Down Gillnets for the Blackfin Flounder (<i>Glyptocephalus stelleri</i>) in Korea

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