The available database comprises research projects in Fisheries, Aquaculture, Seafood Processing and Marine Biotechnology active in the time period 2003-2022.
BlueBio is an ERA-NET COFUND created to directly identify new and improve existing ways of bringing bio-based products and services to the market and find new ways of creating value from in the blue bioeconomy.

More information on the BlueBio project and participating funding organizations is available on the BlueBio website: www.bluebioeconomy.eu

Last Update: 2024/06/19

NA
Fisheries
Effectiveness of separator grids during commercial single and pair trawling for mackerel
National Programme
National
Chevonne Angus
chevonne.angus@uhi.ac.uk
UHI-NAFC - University of the Highlands and Islands; NAFC Marine Centre (United Kingdom)
NA
2007
2008
€ 47,000
NA
Pelagic skippers recognise the need to increase selectivity for mackerel, and to reduce by-catch of herring and other non-target species in this fishery. Trials were undertaken in October 2007 with observers on board for four trips and underwater video footage to observe separator grid activity recorded from one haul. Mackerel shoals were plentiful, and quotas were caught in relatively few hauls and trips which limited the amount of data available for analysis. Additionally, there was widespread adoption by the fleet of handline, or automated jigging machines to assess the size of mackerel; this resulted in the avoidance of shoals where the catch was of smaller than desirable average weight. Although small mackerel and herring can and do escape through the grids, the data did not show that there was a statistically significant difference in average sizes or weights in catches when grids are used. The cost effectiveness of the grid could not be assessed from these trials, and the proposers recommend catches are monitored over a longer period, and in both autumn and spring. Goal: Assess the effectiveness of a separator grid in a pelagic trawl during mackerel fishing.
Gear selectivity; Environmental impact; Fishing technology; Fish; Bycatch; Mackerel; Gear technology; Trawling;
Northern North Sea (27.IVa)
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