"No previous study has allowed the evaluation of the impact of hatchery stocking activities on Penobscot river Salmon, " said Chris Lage, a graduate student working with Kornfield on the study.

CNN: Gene study seeks 'wildness' of Atlantic salmon - October 25 1999

This latest study shows a stable picture - with 62% of recent graduates in employment, 9% unemployed, 14% staying on for further study and the remainder in a mixture of training while working and other activities.

BBC: Graduate jobs market 'better than feared'