In this manual we describe the different stages of the fish capture process, highlight how
different parts of the gear may influence selection and identify possible design changes which can alter the selectivity of the gear.
The intention is to make fishermen, net makers and fisheries
managers more aware of the possible modifications that can be made to their gears so that they
can design and develop gears with a selective performance suitable for their particular fishery.
We have also assembled a catalogue of fact sheets which provide brief descriptions of many of
the catch comparison and selectivity trials that have taken place in the North Atlantic and
adjacent seas. This is again to highlight the potential gear modifications that can be made and to
provide an indication of their likely effect. It is important to bring
together this type of information and to disseminate it as broadly as possible. Not only will the preferred selective
performance differ at a fishery by fishery level, it may also vary at a vessel by vessel level, as
individual fishermen may wish to tailor their gears to the specific catch and quota restrictions
they may face and/or to optimise their response to the prevailing market forces.
Furthermore, the catalogue of factsheets is by no means exhaustive, indeed, it is just a starting
point that needs to be added to and built upon.
How to cite
O’Neill, F.G. and Mutch, K., 2017. Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater
Science Vol 8 No 01