No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoni
In an attempt to improve the selectivity of Australian fish trawls targeting tiger flathead, Platycephalus richardsoni (≥28 cm total length), the utility of four-seam codends with shortened lastridge ropes and comprising 71-mm meshes turned 90° (T90) hung at the narrowest and widest coherent circumf...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2024-02-01
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| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1341890/full |
| _version_ | 1827353376631816192 |
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| author | Matt K. Broadhurst Matt K. Broadhurst Russell B. Millar |
| author_facet | Matt K. Broadhurst Matt K. Broadhurst Russell B. Millar |
| author_sort | Matt K. Broadhurst |
| collection | DOAJ |
| description | In an attempt to improve the selectivity of Australian fish trawls targeting tiger flathead, Platycephalus richardsoni (≥28 cm total length), the utility of four-seam codends with shortened lastridge ropes and comprising 71-mm meshes turned 90° (T90) hung at the narrowest and widest coherent circumferences was compared against a traditional 91-mm diamond-mesh (T0) codend. Significant effects of codend configuration were limited to an increase in the catches of another commercially important species, latchet, Pterygotrigla polyommata, by both T90 codends, and greater escape of some small tiger flathead from the wide 71-mm T90 codend than from the 91-mm T0 codend. Notwithstanding a need to investigate slightly larger T90 mesh sizes for the fishery, the data imply that unlike most codend configurations, circumference does not negatively affect selection in the stated designs and might not require future regulation. |
| first_indexed | 2024-03-08T03:24:24Z |
| format | Article |
| id | doaj.art-64bafa9c81bb4817adf9cf2529ef41a4 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-03-08T03:24:24Z |
| publishDate | 2024-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-64bafa9c81bb4817adf9cf2529ef41a42024-02-12T04:24:08ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452024-02-011110.3389/fmars.2024.13418901341890No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoniMatt K. Broadhurst0Matt K. Broadhurst1Russell B. Millar2New South Wales (NSW) Department of Primary Industries, Fisheries Conservation Technology Unit, National Marine Science Centre, Southern Cross University, Coffs Harbour, NSW, AustraliaSchool of the Environment, The University of Queensland, Brisbane, QLD, AustraliaDepartment of Statistics, University of Auckland, Auckland, New ZealandIn an attempt to improve the selectivity of Australian fish trawls targeting tiger flathead, Platycephalus richardsoni (≥28 cm total length), the utility of four-seam codends with shortened lastridge ropes and comprising 71-mm meshes turned 90° (T90) hung at the narrowest and widest coherent circumferences was compared against a traditional 91-mm diamond-mesh (T0) codend. Significant effects of codend configuration were limited to an increase in the catches of another commercially important species, latchet, Pterygotrigla polyommata, by both T90 codends, and greater escape of some small tiger flathead from the wide 71-mm T90 codend than from the 91-mm T0 codend. Notwithstanding a need to investigate slightly larger T90 mesh sizes for the fishery, the data imply that unlike most codend configurations, circumference does not negatively affect selection in the stated designs and might not require future regulation.https://www.frontiersin.org/articles/10.3389/fmars.2024.1341890/fullbycatchselectivityT90fish trawlingdiscard |
| spellingShingle | Matt K. Broadhurst Matt K. Broadhurst Russell B. Millar No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoni Frontiers in Marine Science bycatch selectivity T90 fish trawling discard |
| title | No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoni |
| title_full | No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoni |
| title_fullStr | No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoni |
| title_full_unstemmed | No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoni |
| title_short | No deleterious circumference effects for T90 codends in an Australian fish trawl targeting tiger flathead, Platycephalus richardsoni |
| title_sort | no deleterious circumference effects for t90 codends in an australian fish trawl targeting tiger flathead platycephalus richardsoni |
| topic | bycatch selectivity T90 fish trawling discard |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1341890/full |
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