In recent decades, new European pike species have been described, highlighting the invasion of Italy by a northern European taxon. Morphological and genetic data strongly support taxonomic differences between two separated ESUs (Evolutionary Significant Units), a northern and a southern taxon isolated by the alpine barrier. However, despite scientific advances, the historical occurrence of the northern European taxon in Italy...

The twaite shad ( A. fallax ), an anadromous fish species belonging to the Clupeidae family, has experienced population declines throughout Europe. This decline is attributable to a range of anthropogenic pressures, including migration barriers, environmental pollution, habitat degradation, predation by invasive species and unsustainable fishing practices. These factors disrupt the species' lifecycle and ecological balance, le...

The European endemic barbels represent important bioindicators of river quality and are nowadays threatened by changing environmental conditions and hybridization with the invasive alien Barbus barbus . It is therefore fundamental to investigate interactions among species and adaptability to climate changes in protected areas of Northern Apennines. An investigation was carried out considering 248 barbel samples that were analy...