Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China Sea
In order to optimize the size selectivity of demersal trawl targeting Banded Scad, <i>Alepes djedaba</i>, in the South China Sea (SCS), we tested and compared the selective properties of four experimental codends. These codends included two diamond-mesh codends (T0 codends) with differen...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-07-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/11/7/1390 |
| _version_ | 1797588695148134400 |
|---|---|
| author | Bingzhong Yang Bent Herrmann Rong Wan |
| author_facet | Bingzhong Yang Bent Herrmann Rong Wan |
| author_sort | Bingzhong Yang |
| collection | DOAJ |
| description | In order to optimize the size selectivity of demersal trawl targeting Banded Scad, <i>Alepes djedaba</i>, in the South China Sea (SCS), we tested and compared the selective properties of four experimental codends. These codends included two diamond-mesh codends (T0 codends) with different mesh openings (30 and 35 mm), and two T90 codends (the netting was turned by 90 degrees) with the relatively same mesh opening. The results demonstrated that the T0_30 codend (diamond-mesh codend with 30-mm mesh opening) presented the best size selectivity and is a potential choice to harvest Banded Scad in the studied area among the codends tested. Although applying the T0_35 or T90_30 codend might obtain a little improvement in size selectivity, the loss of marketable-size individuals could be a compromise. Considering the results in our study and those of previous studies, we recommend that the T0_30 codend should be mandated in the fisheries management regulation of trawl fisheries targeting Banded Scad in the SCS. |
| first_indexed | 2024-03-11T00:56:38Z |
| format | Article |
| id | doaj.art-57f159d49a6b404eb15afdf08040d3b1 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-11T00:56:38Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-57f159d49a6b404eb15afdf08040d3b12023-11-18T19:59:33ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-07-01117139010.3390/jmse11071390Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China SeaBingzhong Yang0Bent Herrmann1Rong Wan2Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture and Rural Affairs, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, ChinaSINTEF Ocean, Fishing Gear Technology, Willemoesvej 2, 9850 Hirtshals, DenmarkCollege of Marine Science, Shanghai Ocean University, Shanghai 201306, ChinaIn order to optimize the size selectivity of demersal trawl targeting Banded Scad, <i>Alepes djedaba</i>, in the South China Sea (SCS), we tested and compared the selective properties of four experimental codends. These codends included two diamond-mesh codends (T0 codends) with different mesh openings (30 and 35 mm), and two T90 codends (the netting was turned by 90 degrees) with the relatively same mesh opening. The results demonstrated that the T0_30 codend (diamond-mesh codend with 30-mm mesh opening) presented the best size selectivity and is a potential choice to harvest Banded Scad in the studied area among the codends tested. Although applying the T0_35 or T90_30 codend might obtain a little improvement in size selectivity, the loss of marketable-size individuals could be a compromise. Considering the results in our study and those of previous studies, we recommend that the T0_30 codend should be mandated in the fisheries management regulation of trawl fisheries targeting Banded Scad in the SCS.https://www.mdpi.com/2077-1312/11/7/1390size selectivityexploitation patterncodend selectivityT0T90Banded Scad |
| spellingShingle | Bingzhong Yang Bent Herrmann Rong Wan Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China Sea Journal of Marine Science and Engineering size selectivity exploitation pattern codend selectivity T0 T90 Banded Scad |
| title | Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China Sea |
| title_full | Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China Sea |
| title_fullStr | Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China Sea |
| title_full_unstemmed | Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China Sea |
| title_short | Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (<i>Alepes djedaba</i>) in the Beibu Gulf, South China Sea |
| title_sort | effects of codend mesh shape and size on the size selectivity of demersal trawl targeting banded scad i alepes djedaba i in the beibu gulf south china sea |
| topic | size selectivity exploitation pattern codend selectivity T0 T90 Banded Scad |
| url | https://www.mdpi.com/2077-1312/11/7/1390 |
| work_keys_str_mv | AT bingzhongyang effectsofcodendmeshshapeandsizeonthesizeselectivityofdemersaltrawltargetingbandedscadialepesdjedabaiinthebeibugulfsouthchinasea AT bentherrmann effectsofcodendmeshshapeandsizeonthesizeselectivityofdemersaltrawltargetingbandedscadialepesdjedabaiinthebeibugulfsouthchinasea AT rongwan effectsofcodendmeshshapeandsizeonthesizeselectivityofdemersaltrawltargetingbandedscadialepesdjedabaiinthebeibugulfsouthchinasea |