Acronym NA
Category
Fisheries
Title Utprøving av ulike typer agn i fløytline-fisket på Øst-Finnmark og størrelsesseleksjon på hyse - Testing of different types of bait in the flute line fishing in East Finnmark and size selection on haddock Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Roger B. Larsen Coordinator email roger.larsen@uit.no
Coordinator institution
UiT - The Arctic University of Norway (Norway)
Institutions involved
NOFIMA - Norwegian Institute of Food, Fisheries and Aquaculture Research (Norway) ,
Start year 2009 End year 2009 Funding (€) € 50,414 Website https://www.fhf.no/prosjekter/prosjektbasen/900298/ Summary In the autumn of 2009, a project was carried out where the aim was to investigate allegations that a new bag bait from Iceland (Bernskan) had good properties for size selection in the line fishing for haddock. This has been brought to the fore through a growing problem around the mixing of undersized haddock in line catches throughout eastern Finnmark. The study included three different baits; Mackerel, sauri and bag bait, which were tested by placing the different bait types alternately on the line stump and measuring the length of all catch sorted by bait type. A total of 33 stumps (a 420 hook) were set with each bait and around 10,000 individuals were measured lengthwise. The results show that there were measurable differences in size composition. On the farm that was suitable with bag bait and sauri, the mixture of undersized fish was 4.5% and 6.6% less, respectively, than on mackerel. With regard to the question of whether any of the tested bait types can solve the problem of mixing undersized haddock in the line fishery in East Finnmark, this study clearly concludes that this is not the case. With the size distribution one had in the areas where the experiments were done, one will in any case have too high a mix of undersized fish to be able to conduct this type of fishing. If one asks whether there are differences in the selection characteristics of the different bait types, the result is more exciting. Differences were found between the baits in both size composition and catch efficiency, and it is possible that these characteristics could have been of great importance for the possibility of conducting a sound fishery if the catch composition had initially been closer to legal interference, and differences are already seen between profitability. which are interesting. If one is to focus on further developing bait with a view to selection, it will then be relevant to make a more comprehensive test of different baits according to the same model as this, but then over several geographical areas at different times of the year. If one then also finds clear patterns of selective properties, the next step will be to find out more specifically which properties of the bait (chemical composition, consistency, visual stimuli) that cause this and then try to cultivate these properties.
Keywords
Fish;
Fishing technology;
Haddock;
Longline fishing;
Catch;
Gear selectivity;
Gear technology;
Marine Region
42
Barents Sea (27.I)
41
Norwegian Sea (27.IIa)
2
Marine Region Map
