The lifestory of Atlantic salmon is kept as a permanent record in their scales and could help efforts to protect future fish stocks, Defra-funded research has found.

The research published today in the journal Scientific Reports helps solve the long-standing mystery of where in the ocean Atlantic salmon go to feed when they leave British waters, and could shed light on why numbers have declined since the 1970s.

As with trees, the growth of salmon scales can be seen as a series of rings, with the most growth occurring when they are feeding out at sea. Scientists took a portion of the scale from when the fish was at sea, and measured the carbon isotopes which are stored in the scale as collagen. By matching the carbon levels with satellite records of ocean surface temperature, the scientists were able to predict where in the Atlantic the fish were living and feeding.

Richard Benyon, Fisheries Minister, said:
"There is so much about the habits of fish when they leave our rivers that remains a mystery. This ground-breaking research will be vital in helping us to learn about their feeding behaviour out at sea, and how best to protect their numbers for future generations."

More than 500 scales were analysed from archived samples at the Centre for Environment, Fisheries and Aquaculture Science (Cefas) and the Centre for Ecology and Hydrology (CEH).

Better title than mine ed, but still plaigarism, pure plaigarism!
regards
bert

If you were first, please do help tell the tale then aenoon. By the way it's spelt plagiarism.

The "wrongful appropriation," "close imitation," or "purloining and publication" of another author's "language, thoughts, ideas, or expressions."
Perhaps you would further explain the temperature maps that are quite meaningless to me, although very pretty.

Figure 4: Proposed feeding areas for two Atlantic salmon populations indicated by the strength of correlation between temporal records of sea surface temperature and scale collagen δ13C values.




Scales that tell tales « Defra News

More than 500 scales were analysed from archived samples at the Centre for Environment, Fisheries and Aquaculture Science (Cefas) and the Centre for Ecology and Hydrology (CEH) ...and carrying on, allegedly, where Editor stopped:
The research found that fish from different rivers were swimming to completely different areas in the ocean when they left the British shores. For example, salmon from rivers including the River Tyne in the North East were swimming towards the Norwegian Sea, whereas fish from the River Frome in Dorset were feeding close to Iceland.

Dr Kirsteen MacKenzie, lead author of the research from the University of Sounthampton, said: “As every single salmon contains a natural chemical tag, we can now see where fish from individual rivers go to feed in the Atlantic. We found that salmon born in two areas of the British Isles swim to feeding grounds that are far apart, and experience very different conditions while at sea.”

Always had aproblem with my a's and i's lol. Almost as bad as my i's and e's
Look at post in ear to ground

Scientists prove U.K Salmon Migrate to many different feeding grounds


made a full 24 hours before editors!

btw, the maps are related to the migration of salmon to their feeding grounds (orangey red bits!)
is an indication of where east coast fish go, and how far west coast fish go.
related to the fluctuation in ocean temperature over the last 25 years.
Is related to the formation of collagen in the rings of scales, which is only formed when carbon isotopes are present, at lower ocean temperature. each area has a different carbon isotope signature, hence they can tell where fish has been feeding at sea through scale collagen.
browse the whole report in link on ear to ground, and will eventually make sense.
regards
bert