Coastal and small-scale fishing in Sweden has fallen in recent decades as a result of several factors; mainly an increase in the seal population, threats to fish species, and logistical problems. As the number of seals increases, the damage they cause to fish and to fishing gear becomes more serious. The use of seal-safe fishing gear has, therefore, major economic significance.
“Some alternative seal-safe fishing gear is commercially available, developed in collaboration between scientists and the fishing industry. But if we are to develop this further, we need to learn more about how seals behave and how they treat the equipment. We have filmed seal-safe traps and seen how certain seals become specialists in attacking them”, says Sara Königson, of the Department of Marine Ecology at the University of Gothenburg. She has studied seals and the fishing industry at the Institute of Coastal Research of the Swedish Board of Fisheries.Seal hooligans hunt at seal-safe fishing gear
“Since we now know that it is only certain seals who are responsible for the damage, we have the chance of limiting the damage in a certain region, simply by removing these individuals.”Successful use of cod pots
“Catches in the pots are just as large as those taken using nets, in a region that suffers from seal damage, and the mesh size of the pots means that they are selective. Furthermore, their impact on the environment is small. The fish are caught alive, and this means that the quality is good and the price is high. The yields of baited fishing gear, however, are influenced by many factors. Currents, temperature, bottom topography, etc., all probably play important roles, as do the availability of food and the maturity of the fish. We still don’t know which factors affect the yield most strongly”, says Sara Königson.
The research has been conducted from Hudiksvall in the north to Simrishamn in the south.
The thesis, Seals and fisheries: a study of the conflict and some possible solutions, was successfully defended at a public defence on 29 April.Journal: Fisheries Research 107, 1-3: 239-244
Climate Impact Research in Hannover: Small Plants against Large Waves
17.08.2018 | Leibniz Universität Hannover
First transcription atlas of all wheat genes expands prospects for research and cultivation
17.08.2018 | Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung
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Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
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Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
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Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
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