This week I'm stuck in a meeting but I will not leave my readers in the cold for too long.
Pending publication in the late weeks of an article today makes up really full-bodied with a short article but of equal importance: the use of circle hooks in deep-sea fishing.
Perhaps many of you are aware of a revolution now happened a few decades ago. The Fisheries
commercial use of the high seas longline primarily as a means of capture. The longlines are several kilometers long lines (10 and over 'is the norm) that are hung at regular intervals of arms leading to a single hook with bait. Each longline offshore contains a variable number of hooks but can 'get in the tens of thousands.
Most vessels have introduced the use of circle hooks by at least 20 years by increasing the effectiveness of propylene longlines up to 60-80%
But how do these hooks and how can they be so 'effective? In addition, because it 's recommended to use them?
A shark caught using circle hooks
The particularity 'round the hook is its curvature. The curve and 'closed so that the hook can hardly grasp within the digestive tract of fish, but slides out to stop and enter the mouth area.
The major cause of mortality 'fish and' deep un'allamatura, using circle hooks effectively becomes possible to release all undersized fish with high survival rate.
With this type of love is not iron (and 'even counterproductive) that are ideal for fishing and more stationary' have a hook placed in the mouth helps unhooking operations that have sped time losses.
But there 's another particularity': I love that regulate the size of fish caught, a little love will find it hard 'to hooked a fish of size!
We have therefore a great way to select the size and increase the survival of the fish accidentally, without diminishing but rather increasing the productivity 'industry.
seems incredible but it 's all true (and known for some time) so that there are already' several studies and international conferences on the subject ( http://www.circlehooksymposium.org/ ) and now many more marine Fisheries 'delicate (large billfish, tunnidi in particular areas) have adopted or are about to adopt regulations on the exclusive use of circle hooks also in the deep sea fishing.
circle hooks with flattened barbs are as effective as normal but the hooks and unhooking 'greatly facilitated.
I wonder 'if you can' apply a solution similar to the Freshwater Fisheries ..
0 comments:
Post a Comment