Now showing items 31-36 of 36
Bycatch reduction in the Norwegian deep-water shrimp (Pandalus borealis) fishery with a double grid selection system
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-25)
Trawlers targeting Deep-water Shrimp (<i>Pandalus borealis</i>) in the North Atlantic use a Nordmøre sorting grid ahead of a small-meshed codend. Based on experimental fishing, the effect of adding a 9 mm spaced release grid behind the mandatory 19 mm spaced Nordmøre sorting grid, was determined. The performance in terms of size selection of the release grid and the two grids combined were assessed ...
Size selection of Nephrops norvegicus (L.) in commercial creel fishery in the Mediterranean Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-23)
In the Mediterranean Sea <i>Nephrops</i> (<i>Nephrops norvegicus</i>) is predominantly caught with bottom trawls, but it is also harvested with creels. While the size selection of <i>Nephrops</i> in bottom trawls is well documented, there is no previous information on creel size selection for this species. Therefore, sea trials were carried out to assess the selective properties of commercial creels ...
Assessment of the Relative Catch Performance of a Surrounding Net without the Purse Line as an Alternative to a Traditional Boat Seine in Small-Scale Fisheries
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-30)
The catch performance of a traditional Ligurian boat seine, which is not in line with the European Union regulation, was compared with an experimental surrounding net without the purse line as a potential legal alternative. The relative catch performance between the two gear types was assessed using a new catch comparison method requiring neither paired data collection nor equal number of hauls with ...
Effect of a quality-improving codend on size selectivity and catch patterns of cod in bottom trawl fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-26)
A new codend concept developed and tested exhibited significantly improved quality of caught cod (<i>Gadus morhua</i>) compared to that of the conventional codend used in the Barents Sea bottom trawl fishery. However, the design of the new quality-improving codend raised concerns about its size selectivity and the possibility that higher retention probability could negatively impact the catch pattern ...
External damage to trawl-caught Northeast arctic cod (Gadus morhua): Effect of codend design
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-22)
The purpose of this study was to investigate the extent of external damage (gear marks, pressure injuries, ecchymosis and skin abrasion) present on trawl-caught cod (Gadus morhua) and to examine whether the extent of damage could be reduced by introducing changes in the gear. We tested whether changing the 2-panel knotted codend used by the Norwegian trawler fleet operating in the Barents Sea today ...
Comparing size selectivity of traditional and knotless diamond-mesh codends in the Iceland redfish (Sebastes spp.) fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-30)
The size selectivity and usability of two diamond mesh codends, a traditional two-panel codend versus an experimental four-panel ultra-cross knotless mesh codend, were compared using the covered codend method in the Iceland redfish (<i>Sebastes norvegicus and S. viviparous</i>) fishery. Results showed that there was no significant difference in size selectivity between the codends at lengths greater ...