1. To investigate survival rates (in underwater cages) of cod, haddock and whiting escaping from cod ends of 90mm x 120 round, 90mm x 100 meshes round and 90mm with an 80mm square mesh top panel.
2. To obtain selectivity data for each cod-end.
3. To lift all the underwater cages and clear the site and distribute live fish for other projects.
John Main (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Inner Seas off the West Coast of Scotland
Biology and fisheries
Quantity: activity duration in days = 7 Description: During the 1st week haddock, whiting and codling were caught on handlines and kept in cages as controls for the experiment.
Quantity: number of hauls = 1 Description: Extra hauls had to be made to boost the number of codling needed for the cage experiments.
No. of hauls not specified.
Quantity: activity duration in days = 11 Description: Within this period small haddock, whiting and codling were taken. Fish escaping the codend mesh were retained for survival experiments.