Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservation
Experimental fishing trials with standard (control) and modified trammel nets were conducted to assess the possible reduction of discards. The standard trammel net was the commercial net used in the area (80 mm stretched mesh inner panel) targeting Sepia officinalis. This configuration produced 19%...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2018-12-01
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| Series: | Scientia Marina |
| Subjects: | |
| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1753 |
| _version_ | 1818960742647332864 |
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| author | Pedro Martínez-Baños Francesc Maynou |
| author_facet | Pedro Martínez-Baños Francesc Maynou |
| author_sort | Pedro Martínez-Baños |
| collection | DOAJ |
| description | Experimental fishing trials with standard (control) and modified trammel nets were conducted to assess the possible reduction of discards. The standard trammel net was the commercial net used in the area (80 mm stretched mesh inner panel) targeting Sepia officinalis. This configuration produced 19% discards in weight. The modifications researched were of two kinds: a “guarding net” consisting of a 2.5-mesh-high (200 mm stretched mesh) net between the footrope and the trammel net and artificial lights of two colours (white or green) mounted on the floating ropes. Catches were identified, measured and categorized (commercial, discards and reason for discarding), and the different configurations were tested for statistical differences. Our results show that trammel net deployments with guarding net produce 32% higher catches of commercial species and as much as 95% higher catches of the target cuttlefish. Artificial lights produced a low but significant increase in total catches of commercial species of 13%, with no differences due to light colour. The amount of discards in deployments with guarding net was 6%, i.e. ca. 1/4 of the amount produced by the standard configuration. The effect of lights on discard reduction was not significant. |
| first_indexed | 2024-12-20T12:02:22Z |
| format | Article |
| id | doaj.art-46f1d7dc5b4f46df970e00bb63669001 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-20T12:02:22Z |
| publishDate | 2018-12-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-46f1d7dc5b4f46df970e00bb636690012022-12-21T19:41:29ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342018-12-0182S191810.3989/scimar.04710.03A1718Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservationPedro Martínez-Baños0https://orcid.org/0000-0002-7546-9263Francesc Maynou1https://orcid.org/0000-0001-7200-6485C&CMedioambienteInstitut de Ciències del Mar, CSICExperimental fishing trials with standard (control) and modified trammel nets were conducted to assess the possible reduction of discards. The standard trammel net was the commercial net used in the area (80 mm stretched mesh inner panel) targeting Sepia officinalis. This configuration produced 19% discards in weight. The modifications researched were of two kinds: a “guarding net” consisting of a 2.5-mesh-high (200 mm stretched mesh) net between the footrope and the trammel net and artificial lights of two colours (white or green) mounted on the floating ropes. Catches were identified, measured and categorized (commercial, discards and reason for discarding), and the different configurations were tested for statistical differences. Our results show that trammel net deployments with guarding net produce 32% higher catches of commercial species and as much as 95% higher catches of the target cuttlefish. Artificial lights produced a low but significant increase in total catches of commercial species of 13%, with no differences due to light colour. The amount of discards in deployments with guarding net was 6%, i.e. ca. 1/4 of the amount produced by the standard configuration. The effect of lights on discard reduction was not significant.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1753experimental fishingdiscard reductiontrammel net fisheriesmediterranean seacuttlefish |
| spellingShingle | Pedro Martínez-Baños Francesc Maynou Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservation Scientia Marina experimental fishing discard reduction trammel net fisheries mediterranean sea cuttlefish |
| title | Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservation |
| title_full | Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservation |
| title_fullStr | Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservation |
| title_full_unstemmed | Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservation |
| title_short | Reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light: contributing to marine biodiversity conservation |
| title_sort | reducing discards in trammel net fisheries with simple modifications based on a guarding net and artificial light contributing to marine biodiversity conservation |
| topic | experimental fishing discard reduction trammel net fisheries mediterranean sea cuttlefish |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1753 |
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