Genomic Footprints of Hybridisation in North Atlantic Eels (Anguilla anguilla and A. rostrata).

ABSTRACT: Understanding interspecific introgressive hybridisation and the biological significance of introgressed variation remains an important goal in population genomics. European (Anguilla anguilla) and American eel (A. rostrata) represent a remarkable case of hybridisation. Both are panmictic and spawn in partial sympatry in the Sargasso Sea, occasionally producing viable, fertile hybrids, primarily found in Iceland. We studied introgressive hybridisation from American into European eel using whole-genome sequences of 78 individuals, including European, American and 21 putative hybrid eels. Previous studies using few genetic markers could not resolve whether hybridisation involved simple unidirectional backcrossing or a more complex hybrid swarm scenario. However, local ancestry inference along

SUBMITTER: Tengstedt ANB 

PROVIDER: S-EPMC12617339 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature