Using a 100 mm mesh size square mesh panel (SMP)
to reduce discarding of horse mackerel, mackerel, blue whiting and juvenile hake
Target species:
monkfish, megrim, hake, squid and red mullet
Area, Vessel
Several cruises took place from 2011 to 2013 in the Basque otter trawl fishery.
monkfish, megrim, hake, squid and red mullet
Area, Vessel
Several cruises took place from 2011 to 2013 in the Basque otter trawl fishery.
Gear type:
demersal
Gear modification
The effectiveness of a 100 mm mesh size SMP in conjunction with a 70 mm diamond mesh codend was tested. A small mesh cover is used to catch the fish which escape through the SMP.
demersal
Gear modification
The effectiveness of a 100 mm mesh size SMP in conjunction with a 70 mm diamond mesh codend was tested. A small mesh cover is used to catch the fish which escape through the SMP.
Results:
(i) 4% of hake, 35% blue whiting and 19% of horse mackerel escaped through the 100 mm SMP. (ii) The horse mackerel that escape through the SMP are smaller than those that are retained by the 70 mm codend.
(i) 4% of hake, 35% blue whiting and 19% of horse mackerel escaped through the 100 mm SMP. (ii) The horse mackerel that escape through the SMP are smaller than those that are retained by the 70 mm codend.
Further information:
Luis Arregi: larregi@azti.es; Alzorriz, N et al., 2016. Questioning the effectiveness of technical measures implemented by the Basque bottom otter trawl fleet. Fish. Res., 175: 116-126
Luis Arregi: larregi@azti.es; Alzorriz, N et al., 2016. Questioning the effectiveness of technical measures implemented by the Basque bottom otter trawl fleet. Fish. Res., 175: 116-126
Citation :
Alzorriz, N. et al.
, 2017.
Using a 100 mm mesh size square mesh panel (SMP)
. In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.