Scottish Marine and Freshwater Science Vol 8 No 3
The Gear Innovation and Technology Advisory Group (GITAG) funded trials to assess whether the unwanted by-catch of round and flatfish could be reduced in the Nephrops trawl fishery using a modified Nephrops trawl incorporating 200mm bobbins and a 200mm square mesh panel. Catches of Nephrops and monkfish remained consistent with that of a standard commercial Nephrops trawl. There were significant reductions in relative catch rates of cod and larger haddock (>25cm) and whiting (>28cm). There was no significant difference between the two trawls for haddock below 24cm and for whiting below 27cm. There was a significant reduction in the quantities of smaller common dab (<19cm) and long rough dab (<21cm) that were caught when using the modified trawl. However, significantly more larger plaice above 30cm were retained by the modified trawl.
Data and Resources
- Scottish Marine and Freshwater Science Vol 8 No 3pdf
PDF report - Trials to Assess the Effects of Bobbin Groundgear and a 200 mm...
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Monday, May 23, 2016 - 23:00 to Monday, May 30, 2016 - 23:00
UK Open Government Licence (OGL)
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The Zenith BF106, a 24.85m 500kW, twin rig stern trawler was chartered for the selectivity trials. The charter ran for 7 days from 24th to 31st of May 2016. Catch comparison trials, using the twin trawl method, were carried out on commercial fishing and Nephrops grounds 50 miles north of Fraserburgh in the North Sea (ICES area IVa). The species mix at the fishing grounds consisted of haddock, whiting, cod, a variety of flatfish and Nephrops.
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Marine Scotland Science
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