Lukáš Choleva

Siverskyi Donets water frog systems lacking P. lessonae split into diploid-only and diploid-plus-triploid hybrid types, with clonal, low-diversity L-genomes and steep tadpole-to-adult loss of P. ridibundus.

The paper shows asexual hybrids mediate genomic introgression from an extinct species into their sexual parent, challenging the view of asexual lineages as evolutionary dead ends.

This study investigates the transition to asexual reproduction in water frogs through hybridogenesis, using cytogenomic probes to show DNA elimination and gametogenic modifications in F1 hybrids.

The paper shows hybrid asexuality can act as a primary reproductive barrier in speciation, emerging before other postzygotic incompatibilities in Cobitis loaches and other fish species.