Esox lucius Linnaeus 1758

Considerable genetic divergence emerged among the barcoded

E. lucius

from the northern lakes, between the fish of the western lakes of the sampled region (Chalain, Annecy) compared to other northern lakes. Despite evidence suggesting the additional presence of E. cisalpinus in Lake Geneva in the first half of the 19 th century (barcoding of historic samples from a museum collection) [154], all ten Esox barcoded from Lake Geneva in Projet Lac were genetically E. lucius. Two lineages were apparent among the Geneva pike however, with five of the fish sharing the lineage of a historically sampled E. lucius (also collected in the first half of the 19 th century) [154] 4. This lineage was also shared with two pike from Lake Joux.The five other E. lucius from Lake Geneva shared a lineage with fish of other northern perialpine lakes (including also one fish from Lake Joux). Another distinct lineage of E. lucius contained all barcoded pike from Chalain (3 fish) and one from Annecy. This lineage clustered with GenBank reference samples mostly from Canada (as well as other parts of Europe) and may reflect the translocation of fish for stocking.