
A new way of measuring fish welfare in wild-capture fisheries
When excessive quantities of mackerel are crowded tightly together in the net, the fish experience poor welfare.
NOT CACHED
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When excessive quantities of mackerel are crowded tightly together in the net, the fish experience poor welfare.
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“As scientists, we have a responsibility not just to find problems, but also to solve them”, says Nils Gunnar Kvamstø, the CEO of the Institute of Marine Research.
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Across two spawning seasons, researchers have exposed Atlantic cod to powerful blasts from airguns during spawning and tracked the behaviour of the fish. The results have now been published.
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Before surveying the area, scientists expected to find large areas of untouched seabed – and the odd trawl mark left by fishing boats. What they actually found was nothing like that.
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One was eaten by a whale, another caught by a local fisherman called Håkon, and three returned to the same spot they were tagged a year ago.
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This autumn there has been a big increase in the number of string jellyfish along the coast. This colonial jellyfish can reach lengths of up to 30 metres and it can be fatal to farmed fish.
The report gives an overview of cruises in 2021, by the Institute of Marine Research, University of Bergen and Tromsø and Norwegian Polar Institute, on board our research vessels and many of the hired commercial vessels. Each cruise has a short description and a track chart showing CTD a
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