How can scales tell us where Salmon have been?

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Offline thedoc

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How can scales tell us where Salmon have been?
« on: 20/09/2011 13:52:08 »
Salmon numbers in the UK have been falling since the 1970s.  This isn't down to overfishing, so scientists are trying to find out why.  However, salmon are pretty tricky to follow.  Their life cycle takes them from rivers into the open oceans, and then back again to rivers to breed.  Now, a new technique that uses samples of the fish’s scales could change all that.
Read a transcript of the interview by clicking here

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« Last Edit: 20/09/2011 13:52:08 by _system »