Catch comparison between rockhoppers and bobbins ground gear on the Norwegian bottom sampling trawl
Original version
This report is not to be cited without prior reference to the authorsAbstract
In a study aimed at improving the reliability of the Norwegian bottom sampling
trawl, comparative fishing between standard bobbins gear and rockhopper ground
gear were carried out in the Barents Sea. The catch ratios bobbins/ rockhopper
(B/R) for cod and haddock show a higher efficiency for rockhopper than for bobbins,
especially for small fish. The catch ratio B/R for cod varied by time of day.
Rockhopper seemed to have a higher efficiency compared to bobbins during daytime.
The same trend was not found for haddock. These experiments confirm earlier
experiments that rockhoppper is more effective than bobbins gear in catching fish
close to the bottom. This is particulary true for small cod.