Relative size selectivity of a four-panel codend with short lastridge ropes compared to a flexigrid with a regular codend in the Barents Sea gadoid trawl fishery
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چکیده
منابع مشابه
Trawl Selectivity in the Barents Sea Demersal Fishery
This chapter provides a general overview of the Barents Sea demersal trawl fishery. First, it reviews historical catch levels and current biomass status of four commercially important demersal species (cod, haddock, Greenland halibut, and redfish) and includes an overview of their management plan that has been carried out by the Joint Norwegian–Russian commission. Then, it presents the evolutio...
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15 صفحه اولEffect of Codend Circumference on the Size Selection of Square-Mesh Codends in Trawl Fisheries
It is well established that increasing mesh number in the circumference of a diamond-mesh trawl codend can reduce size selection for round fish, whereas selection for flat fish species is unaffected. This effect has also been documented in Mediterranean trawl fisheries. In contrast, no information is available with regard to the effect of increasing mesh number in the circumference of square-me...
متن کاملHow Many Fish Need to Be Measured to Effectively Evaluate Trawl Selectivity?
The aim of this study was to provide practitioners working with trawl selectivity with general and easily understandable guidelines regarding the fish sampling effort necessary during sea trials. In particular, we focused on how many fish would need to be caught and length measured in a trawl haul in order to assess the selectivity parameters of the trawl at a designated uncertainty level. We a...
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ژورنال
عنوان ژورنال: Fisheries Research
سال: 2020
ISSN: 0165-7836
DOI: 10.1016/j.fishres.2020.105724