Sentences with phrase «juvenile salmon migrating»

Also in 2015, individual salmon farms did not coordinate anti-louse treatments, with some farms delaying treatment until just prior to the time when juvenile salmon migrate past farms.

Not exact matches

«We know that chalk streams are very productive and juvenile salmon in these rivers generally migrate to sea after just one year, whereas young salmon in other river types typically leave freshwater at 2 - 3 years.

The sea lice spread to migrating juvenile wild salmon, resulting in the highest numbers of sea lice observed on wild salmon in a decade.

Juvenile wild salmon are then exposed as they migrate past these areas.»

It has now been established that sea lice from farms kill up to 95 % of juvenile wild salmon that migrate past them.