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Schematic side profile of the two-seam high-rise trawl used in this study.

Schematic side profile of the two-seam high-rise trawl used in this study.

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Fig. 1. Map of the tow starting locations for sea trials.
Fig. 2. (Left Photo) Electralume LED lights tied together in groups of...
Fig. 3. Schematic side profile of the two-seam high-rise trawl used in...
Fig. 4. The difference in light levels recorded between the illuminated...
+4 Fig. 5. Abiotic conditions taken from CTD profiles while actively...
The use of artificial illumination to reduce Pacific halibut (Hippoglossus stenolepis) bycatch for a high-rise bottom trawl in the U.S. West Coast groundfish fishery
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  • Jul 2024
In the last decade, there has been increasing interest in the use of artificial illumination as a bycatch reduction device. In the U.S. West Coast groundfish bottom trawl fishery, research has found that the addition of green light-emitting diode (LED) lights to the upper bridles of low-rise cutback trawls significantly reduced Pacific halibut (Hip...
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... results. The LED lights were tied together end-to-end in clusters of three with twine (Fig. 2). Five LED clusters were placed on 12 mm spectra rope approximately 3.96 m in length that was extended from the trawl breastline to the lower bridle on either side of the trawl to mimic the bridle configuration of the trawl used by Lomeli et al. (2021) (Fig. 3). The spectra rope remained attached to the trawl during non-illuminated ...