Bulletin of the Sea Fisheries Institute 2 (156) 2002 - CEEMaR

Table 5. Differences in caught cod length recalculated for the standard mesh bar length
Cruise
Month, year
45 mm 50 mm 55 mm 60 mm 65 mm
new new new used new used new used
I March 1994 40.6 43.6 46.1 46.1 47.7
II Dec. 1994 42.4 46.2 45.7 47.7 51.1
III Jan/Feb.1995 43.4 44.6 44.9 48.5 47.4 52.0 50.8
Average 40.6 43.1 45.6 45.6 48.5 47.6 52.0 51.0
Table 6. Selectivity coefficient for various cod gill net mesh sizes
Cruise
Month, year
45 mm 50 mm 55 mm 60 mm 65 mm
new new new used new used new used
I March 1994 4.45 4.30 4.12 4.16 3.89
II Dec. 1994 4.17 4.16 4.09 3.91 3.95
III Jan/Feb.1995 4.25 3.99 4.02 3.99 3.89 3.91 3.89
Table 7. Percentage of undersized cod retained by various gillnet mesh sizes
Cruise
Month, year
45 mm 50 mm 55 mm 60 mm 65 mm
new new new used new used new used
I March 1994 2.34 2.95 4.24 1.34 4.06
II Dec. 1994 0.80 1.51 1.14 2.32 0.60
III Jan/Feb.1995 0.50 0.60 0.85 1.04 1.20 2.52 0.60
Impact of material and mesh size ... 13