A 'Simple anterior fish excluder' (SAFE) for mitigating penaeid-trawl bycatch

McHugh, Matthew J., Broadhurst, Matt K., Sterling, David J. and Millar, Russell B. (2015) A 'Simple anterior fish excluder' (SAFE) for mitigating penaeid-trawl bycatch. PLoS One, 10 4: . doi:10.1371/journal.pone.0123124


Author McHugh, Matthew J.
Broadhurst, Matt K.
Sterling, David J.
Millar, Russell B.
Title A 'Simple anterior fish excluder' (SAFE) for mitigating penaeid-trawl bycatch
Journal name PLoS One   Check publisher's open access policy
ISSN 1932-6203
Publication date 2015-04-02
Year available 2015
Sub-type Article (original research)
DOI 10.1371/journal.pone.0123124
Open Access Status DOI
Volume 10
Issue 4
Total pages 14
Place of publication San Francisco, CA United States
Publisher Public Library of Science
Collection year 2015
Language eng
Formatted abstract
Various plastic strips and sheets (termed ‘simple anterior fish excluders’−SAFEs) were positioned across the openings of penaeid trawls in attempts at reducing the unwanted bycatches of small teleosts. Initially, three SAFEs (a single wire without, and with small and large plastic panels) were compared against a control (no SAFE) on paired beam trawls. All SAFEs maintained targeted Metapenaeus macleayi catches, while the largest plastic SAFE significantly reduced total bycatch by 51% and the numbers of Pomatomus saltatrix, Mugil cephalus and Herklotsichthys castelnaui by up to 58%. A redesigned SAFE (‘continuous plastic’) was subsequently tested (against a control) on paired otter trawls, significantly reducing total bycatch by 28% and P. saltatrix and H. castelnaui by up to 42%. The continuous-plastic SAFE also significantly reduced M. macleayi catches by ~7%, but this was explained by ~5% less wing-end spread, and could be simply negated through otter-board refinement. Further work is required to refine the tested SAFEs, and to quantify species-specific escape mechanisms. Nevertheless, the SAFE concept might represent an effective approach for improving penaeid-trawl selectivity.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Biological Sciences Publications
 
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