Selective fishing
Selective fishing is the restriction to a certain fish species . For selective fishing, the fisherman needs special equipment and special nets . He also needs to know exactly the differences in behavior of the individual fish species. The advantage is that unwanted bycatch is largely avoided . The fisherman saves fuel because he does not have to haul a full net and the work of sorting out.
For some fish species, the mesh openings are adapted to the target species and so-called escape windows are built into the net. These technical measures have the advantage that they cost little and can be implemented very quickly. They improve selectivity and significantly reduce bycatch.
Example flounder
Since flounders are at the bottom of the sea, they are caught with a bottom trawl , which is dragged across the sea floor using the ship's engine power. With conventional bottom trawls, the fisherman catches flounders as well as all other fish that get lost in the net. These fish are considered bycatch and must be sorted out. By law, fishermen in the EU are obliged to throw the bycatch back into the sea. A lot of fish die in the process. With a special trawl net for flounder, which is open at the top, the fisherman enables all other fish to escape, while the flounder strives towards the bottom of the sea and flees into the net. With this special net, the bycatch rate is reduced by up to 90 percent.
Web links
- Danger to young fish - selection network to reduce bycatch , current research on Deutschlandfunk from February 19, 2015
Individual evidence
- ↑ Clever Hook Saves Sea Turtles
- ↑ Federal Ministry of Food, Agriculture and Consumer Protection ( Memento of March 8, 2010 in the Internet Archive )
- ↑ DEEPWAVE ( Memento of the original from April 24, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
