ON THE COMPARATIVE EFFICIENCY OF TRAWLS MADE OF COTTON POLYETHYLENE AND COMBINATION OF BOTH THE MATERIALS.

Abstract

The merits and demerits of cotton, polyethylene and combination
of the two materials ascertained on the basis of cost,
wear and tear, maintenance, total catch and qualitative analy~is
of the catch are discussed by making comparative fishing
experiments with the three trawl gears made of these materials.
The study can be concluded with a suggestion for switching
over to polyethylene twisted monofilarnents for better, in case
of bottom trawls without in any way adversely affecting the
catch of shrimps and at the same time for enhanced fish catch.
Eventhough the combination net is found to be equal in
efficiency as the polyethylene net this idea cannot be conveniently
adopted from the point of view of economy.