Testing Three Methods to Reinforce Eel Population in a Southern European River (Oria, Spain), 2011-2013
All the release points had good water and habitat quality and released eels will be able to migrate downstream during flooding in autumn once they mature. Electrofishing surveys have been made at the beginning of the first summer after the release and then, yearly in September. The recapture rate has remained constant in the elvers from the trap, and has decreased with the other two methods. All the released eels were able to grow, although grow rate and condition factor of cultured glass eels were the lowest.