Fishing mortality on silver eels , Anguilla anguilla ( L . ) , in Denmark

A total of 2198 silver eels were Carlin-tagged and released at two sheltered and one exposed site in the western Baltic Sea. A total of 547 tagged silver eels were recaptured, corresponding to recoverv rates from 19 to 38% at the different sites. The majoritv of the recaptured silver cds was reporred from wirhin a radius of 20 km and within a period of less than 16 days after release. There was no clear correlation between recovery rate and number of pound nets or pound net densiry. The locarions of recoveries from Øresund suggest that significanrly more silver eels migrated northward. In Roskilde Fjord a similar investigation carried our in the lare 1960s suggested that fishing morrality had fallen about 50% over this period. In Roskilde Fjord, the estimated spawner escapement has dropped from 14.6 to 7.1 tonnes since the 1960s.