Discard survival of undersized plaice
in the Danish bottom trawl fishery.
Target species:
European plaice (Pleuronectes platessa)
Area, Vessel
Fishing trials took place in the Skagerrak (ICES IIIa) on board S84 Ida-Katrine (15.1 m, 221 kW)
European plaice (Pleuronectes platessa)
Area, Vessel
Fishing trials took place in the Skagerrak (ICES IIIa) on board S84 Ida-Katrine (15.1 m, 221 kW)
Gear type:
demersal
Gear modification
A standard commercial twin rig trawl gear with nominal diamond mesh size of 90 mm was fished: (1) in summer targeting plaice, (2) in winter targeting plaice, and (3) in winter targeting Norway lobster. The catch was sorted on deck following usual commercial practise. and u Undersized plaice that would have previously been discarded, were placed in specially designed holding tanks.
demersal
Gear modification
A standard commercial twin rig trawl gear with nominal diamond mesh size of 90 mm was fished: (1) in summer targeting plaice, (2) in winter targeting plaice, and (3) in winter targeting Norway lobster. The catch was sorted on deck following usual commercial practise. and u Undersized plaice that would have previously been discarded, were placed in specially designed holding tanks.
Results:
The survival probability of undersized plaice after 14 days in captivity was: 44% of 333 fish when targeting plaice in summer. 75% of 142 fish when targeting plaice in winter. 41% of 123 fish when targeting Norway lobster in winter.
The survival probability of undersized plaice after 14 days in captivity was: 44% of 333 fish when targeting plaice in summer. 75% of 142 fish when targeting plaice in winter. 41% of 123 fish when targeting Norway lobster in winter.
Further information:
Junita Karlsen (juka@aqua.dtu.dk)
Junita Karlsen (juka@aqua.dtu.dk)
Citation :
, 2017.
Discard survival of undersized plaice
. In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.