Freshwater pearl mussel breeding project in Northumberland

Help

The Environment Agency and scientists are celebrating encouraging signs in a lengthy project to try to get pearl mussels to breed.

They have been trying to recreate breeding conditions at Kielder Hatchery in Northumberland for seven years but with little success.

Now the work has finally paid off with 6,000 baby sea trout playing host to pearl mussel larvae.

The endangered molluscs' unusual breeding process means that fertilised eggs need to 'latch' on to fish to develop.

Jeremy Cooke reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.