These devices are incorporated into trawl nets and are designed to give finfish openings for escape while retaining target shrimp species in the rear (codend) of the net. Examples include “skylights” which consist of a mesh opening located at the top of the codend. ”Skylights” can be combined with guiding funnels that create visual and tactile stimuli to direct finfish towards the “skylight” escape sections. A different but similar type of design is the fisheye (including Gulf and yarrow fisheyes and bigeyes) which are openings typically forming a rigid frame constructed of aluminum or steel rods and placed along the top center portion of the codend. These devices create and area of reduced water flow immediately below them that fish can use for swimming behavioral orientation and escape.
Submitted by morgaac on September 23, 2015 – 10:23
Chinook were able to escape out of the escape window; Rockfish bycatch was reduced by 32.4% Pacific hake continued to swim into the codend
- Fish escape windows/separator devices
Submitted by morgaac on September 21, 2015 – 13:35
Submitted by Kate McClellan on November 14, 2013 – 16:43
Submitted by morgaac on August 2, 2013 – 08:19
Submitted by morgaac on July 26, 2013 – 07:51
Square mesh panels, combined with guiding panels, were effective for retaining marketable bycatch and reducing discards Maintains target catch levels. Gear technology in Nephrops trawl fisheries
- Fish escape windows/separator devices
Submitted by morgaac on April 15, 2013 – 07:56
Submitted by morgaac on February 21, 2013 – 10:40
The two extensions were able to remove scup at mean rates of 86-100% , although small (