The yellow European eel (Anguilla anguilla L.) may adopt a sedentary lifestyle in inland freshwaters

We analysed the movements of the growing yellow phase using a long-term mark–recapture programme on European eels in a small catchment (the Frémur, France). The results showed that of the yellow eels (>200 mm) recaptured, more than 90% were recaptured at the original marking site over a long period before the silvering metamorphosis and downstream migration. We conclude that yellow European eels >200 mm may adopt a sedentary lifestyle in freshwater area, especially in small catchment

Consequences of spatial structure and connectivity to productivity and persistence of localand regional populations

No abstracts are to be cited without prior reference to the author.Understanding mechanisms of local and regional population persistence and the sustainability of productive fisheries is beneficial for effective fisheries management. We describe a model framework to test hypotheses concerning the consequences of structure within populations and connectivity between populations to the productivity (spawning stock biomass (SSB)), stability (variation in SSB), resilience (time to rebuild SSB after environmental disturbance), and sustainability (maximum sustainable fishing mortality) of the overall system (i.e., population or metapopulation)