Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>)
Understanding the interactions between target species and netting is paramount for increasing the sustainability of trawling activities. The selectivity of the utilized netting depends on the sizes and opening angles of the mesh. The effects of the mesh size and mesh opening angle on the fishing sel...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/9/4/372 |
| _version_ | 1797539167881658368 |
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| author | Zhongqiu Wang Hao Tang Liuxiong Xu Jian Zhang Fuxiang Hu |
| author_facet | Zhongqiu Wang Hao Tang Liuxiong Xu Jian Zhang Fuxiang Hu |
| author_sort | Zhongqiu Wang |
| collection | DOAJ |
| description | Understanding the interactions between target species and netting is paramount for increasing the sustainability of trawling activities. The selectivity of the utilized netting depends on the sizes and opening angles of the mesh. The effects of the mesh size and mesh opening angle on the fishing selectivity of Antarctic krill (<i>Euphausia superba</i>) were assessed via micro-cosmos experiments. The results show that both the absolute abundance and the incidence of larger krill individuals passing through experimental panels are proportional to the utilized mesh size. Krill individuals larger than 35 mm passed through experimental panels at mesh opening angles larger than 50° for a 15 mm mesh size, 35° for a 20 mm mesh size and 20° for a 30 mm mesh size. Additionally, all <i>L</i>50 values increased with an increasing mesh size and an increasing mesh opening angle at the same mesh size. Furthermore, the selection range increased with an increasing mesh size and with an increasing mesh opening angle at the same mesh size. This paper provides scientific guidance for the choice of liner mesh sizes of krill trawl with the aim to improve fishing efficiency while minimizing fishing losses and potential negative ecosystem impacts from fisheries. |
| first_indexed | 2024-03-10T12:42:24Z |
| format | Article |
| id | doaj.art-38808b177469451b8dec609c337cf44e |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T12:42:24Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-38808b177469451b8dec609c337cf44e2023-11-21T13:47:31ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-04-019437210.3390/jmse9040372Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>)Zhongqiu Wang0Hao Tang1Liuxiong Xu2Jian Zhang3Fuxiang Hu4College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Marine Sciences, Shanghai Ocean University, Shanghai 201306, ChinaFaculty of Marine Science, Tokyo University of Marine Science and Technology, Minato, Tokyo 108-8477, JapanUnderstanding the interactions between target species and netting is paramount for increasing the sustainability of trawling activities. The selectivity of the utilized netting depends on the sizes and opening angles of the mesh. The effects of the mesh size and mesh opening angle on the fishing selectivity of Antarctic krill (<i>Euphausia superba</i>) were assessed via micro-cosmos experiments. The results show that both the absolute abundance and the incidence of larger krill individuals passing through experimental panels are proportional to the utilized mesh size. Krill individuals larger than 35 mm passed through experimental panels at mesh opening angles larger than 50° for a 15 mm mesh size, 35° for a 20 mm mesh size and 20° for a 30 mm mesh size. Additionally, all <i>L</i>50 values increased with an increasing mesh size and an increasing mesh opening angle at the same mesh size. Furthermore, the selection range increased with an increasing mesh size and with an increasing mesh opening angle at the same mesh size. This paper provides scientific guidance for the choice of liner mesh sizes of krill trawl with the aim to improve fishing efficiency while minimizing fishing losses and potential negative ecosystem impacts from fisheries.https://www.mdpi.com/2077-1312/9/4/372trawling fisheriesfishing gearzooplanktonliner nettingsize selection |
| spellingShingle | Zhongqiu Wang Hao Tang Liuxiong Xu Jian Zhang Fuxiang Hu Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>) Journal of Marine Science and Engineering trawling fisheries fishing gear zooplankton liner netting size selection |
| title | Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>) |
| title_full | Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>) |
| title_fullStr | Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>) |
| title_full_unstemmed | Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>) |
| title_short | Application of a Controlled Aquarium Experiment to Assess the Effect of Mesh Sizes and Mesh Opening Angles on the Netting Selectivity of Antarctic Krill (<i>Euphausia superba</i>) |
| title_sort | application of a controlled aquarium experiment to assess the effect of mesh sizes and mesh opening angles on the netting selectivity of antarctic krill i euphausia superba i |
| topic | trawling fisheries fishing gear zooplankton liner netting size selection |
| url | https://www.mdpi.com/2077-1312/9/4/372 |
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