News tagged with fish

Mercury levels in Hawaiian yellowfin tuna increasing

Mercury concentrations in Hawaiian yellowfin tuna are increasing at a rate of 3.8 percent or more per year, according to a new University of Michigan-led study that suggests rising atmospheric levels of the toxin are to blame.

Feb 02, 2015
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How to avoid seabird bycatch in the Mediterranean

Night setting; bird scaring lines; weighted branchlines that sink rapidly; covering fish offal and bait on board so it doesn't attract seabirds to the boats; deck lights kept at the minimum level, and discards ...

Mar 11, 2015
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Study shows embryos can learn

Pond snails are able to sense chemicals released by their predators whilst they are still embryos in the egg and alter their behaviour accordingly, according to new research.

Dec 10, 2014
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Trawling makes for skinny flatfish

Trawling the seabed doesn't just remove some of the fishes living there; it also makes some of the survivors thinner and less healthy by forcing them to use more energy finding less nutritious food.

Dec 11, 2014
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Extracting 'gold' from fish and plant waste

New industrial processing techniques are enabling us to obtain valuable proteins, antioxidants and oils from salmon and rapeseed waste. These extracts can be used in health foods, nutritional supplements ...

Mar 11, 2015
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When estimating fish populations, seeing is believing

Somewhere off the Atlantic coast of Florida, a fishing boat bobs in the swell, and Nate Bacheler helps swing a fish trap over the side. It's a big metal cage shaped like a giant arrowhead, and it looks like ...

Feb 18, 2015
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Salish Sea seagull populations halved since 1980s

The number of seagulls in the Strait of Georgia is down by 50 per cent from the 1980s and University of British Columbia researchers say the decline reflects changes in the availability of food.

Feb 27, 2015
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Sharks off the menu and on the tourist trail in Palau

In many places swimmers might prefer to avoid sharks, but wetsuit-clad tourists in Palau clamour to dive among the predators thanks to a pioneering conservation initiative that has made them one of the country's ...

Sep 02, 2014
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