The effects of LED handline attachments on Atlantic cod (Gadus morhua) catch efficacy and bycatch

Authors
Blackmore, R. J., Winger, P. D., Bitton, P. P., Bayse, S., Whittaker, K., & Montevecchi, W. A.
Year
Journal/Publisher Name
Fisheries Research
Volume (Issue #)
258
Page #s
8
Contact information
R.J. Blackmore, Memorial University of Newfoundland and Labrador, Canada- rblackmore@mun.ca
Summary

This field study evaluated the use of green LED handline modifications (visual deterrent) on Atlantic cod (Gadus morhua) gillnets to reduce bycatch of wolffish. Experiments were performed on three separate commercial fishing vessels in Mission Bay, Canada between September and November 2020, and experimental LED lights were applied to vessels rather than individual lines. There was no significant impact of the lights to either target catch or bycatch, but limited statistical analyses suggest that the use of green LED lights did reduce bycatch of Atlantic wolffish (Anarhichus lupus).

Link
https://www.researchgate.net/profile/Robert-Blackmore-2/publication/365456621_T…

Field Studies

The effects of LED handline attachments on Atlantic cod (Gadus morhua) catch efficacy and bycatch

Study Type
Field study in the wild
Location
Motion Bay, Newfoundland and Labrador, Canada
Target catch
Atlantic cod (Gadus morhua)
Effect on bycatch species
Atlantic wolffish bycatch seemed to be reduced with the use of green LEDs, but there was no significant result for bycatch overall
Effect on target catch
none- no significant difference in the catch rate or average weight or length of catch
Bycatch species
Bony Fishes
Reduction technique
Visual deterrents
Fishing Gear
Gillnets