Development of new concepts for escape windows to minimise cod catches in Norway lobster fisheries

作者：Madsen Niels^*; Frandsen Rikke Petri; Holst Rene; Krag Ludvig A

来源：Fisheries Research, 2010, 103(1-3): 25-29.

DOI：10.1016/j.fishres.2010.01.008

• Gadus morhua
• Nephrops norvegicus
• Pleuronectes platessa
• Square mesh panel
• Acoustic releaser
• Selectivity
• Escape window
• Trawl
• Kattegat
• Skagerrak
• Sorting box

Gear selectivity with regard to cod (Cactus morhua) needs to be improved in the Kattegat and Skagerrak Norway lobster (Nephrops norvegicus) fishery One way to achieve this goal is to improve the selectivity of an escape window (henceforth window) in the gear Our gear development focused particularly on moving the window further back. gaining more stability in the codend to avoid loss of Norway lobstei through the window, making a relatively narrow section where the window is located, and testing larger mesh sizes in the We designed a four-panel sorting section the sorting box where a 300 MM window is placed at the top section at about 3-6 m from the codline Acoustic release technology was used to avoid catch loss during gear retrieval Sea trials were conducted in the Skagerrak and Kattegat from a commercial trawler The sorting box yielded a high reduction of the cod catch, but no improvement was observed for cod that came into contact with the window after reducing the distance horn the window to the codline The sorting box also showed a high reduction of flatf

• 出版日期2010-4