First evidence of natural reproduction of the Allis shad Alosa alosa in the River Rhine following re‐introduction measures

Abstract

After stocking with larvae from the Gironde–Garonne–Dordogne population, in 2013, three young‐of‐the‐year Allis shad Alosa alosa , probably originating from natural reproduction, were documented for the first time in a period of nearly 100 years in the River Rhine. In 2014, a further increase was observed when 57 juveniles and eight adults were caught; seven of these eight adults were derived from stocking, indicating the success of stocking measures within the framework of the EU‐LIFE project.

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