Abstrakt
Clonal reproduction generally leads to the phenomenon that genomes from parental sexual taxa are captured and inherited from mothers to daughters exclusively along a hybrid asexual lineage. Therefore, clonal genomes have difficulties of return from hybrid asexual to sexual populations.
We study European water frog populations in Central Europe consisted of both hybrid and sexual individuals. Hybrid taxon Pelophylax esculentus (RL) originates from primary hybridizations between two sexual parental species, Pelophylax ridibundus (RR) and Pelophylax lessonae (LL) and reproduces via hybridogenesis.
In principle, a hybrid clonally inherits half of a genome (e.g., L) while second half (R) is eliminated in each generation. To restore a hybrid genotype they have to mate with a sexual P. ridibundus to get the lost R genome into their progeny.
Using microsatellite markers and cytogenomic markers on mitotic and meiotic chromosomes, we study pedigree inheritance patterns in mixed populations of P. esculentus and P. ridibundus. Here we show how genomes may migrate between asexual and sexual populations and discuss a possible impact of clonal genomes on parental P. ridibundus populations.