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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Refining a Nordmore-grid bycatch reduction device for the Spencer Gulf penaeid-trawl fishery
PloS one, Vol.13(11), e0207117
21/11/2018
PMCID: PMC6248960
PMID: 30462686
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Source: InCites
Abstract
Incremental refinements were made to a generic Nordmøre-grid to minimise bycatches of blue swimmer crabs Portunus armatus and giant cuttlefish Sepia apama, while maintaining catches of western king prawns Melicertus latisulcatus in the Spencer Gulf penaeid-trawl fishery. These refinements involved varying bar spaces, escape-exit areas and guiding-panel lengths, and were compared against a conventional trawl. Catches of teleosts and M. latisulcatus largely remained unaffected by the changes. Maximum reductions in P. armatus and S. apama bycatches (both ~90%) were achieved with a Nordmøre-grid comprising 38-mm bar spaces, 0.81- or 1.05-m2 escape exits and a 2.7-m guiding panel. Catching fewer P. armatus should reduce abrasion and crushing of M. latisulcatus in the codend and so increase the value of this targeted species. While noting some unresolved operational concerns, these results demonstrate the potential improvements in selectivity in this fishery using a Nordmøre-grid, primarily by mechanical separation.
Details
- Title
- Refining a Nordmore-grid bycatch reduction device for the Spencer Gulf penaeid-trawl fishery
- Creators
- Craig J. Noell - South Australian Research and Development InstituteMatt K. Broadhurst - New South Wales Department of Primary Industries (Coffs Harbour)Steven J. Kennelly - IC Independent Consulting
- Publication Details
- PloS one, Vol.13(11), e0207117
- Publisher
- Public Library Science
- Number of pages
- 18
- Grant note
- 2015/019 / Australian Fisheries Research and Development Corporation
- Identifiers
- 991013099013402368
- Copyright
- © 2018 Noell et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited (https://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- National Marine Science Centre; Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article