Triggers and biological processes controlling male or female gonadal differentiation vary in
vertebrates, with sex determination (SD) governed by environmental factors or simple to …

Environmental variation in the Anthropocene involves several factors that interfere with
endocrine systems of wildlife and humans, presenting a planetary boundary of still unknown …

Palearctic water frogs (genus Pelophylax) are an outstanding model in ecology and
evolution, being widespread, speciose, either threatened or threatening to other species …

Alien species can strongly impact local environments and compete against native species,
which can lead to their extinction. Marsh frogs of the Pelophylax ridibundus complex are one …

The edible frog, Pelophylax esculentus, is a hybrid form that reproduces via clonal
propagation of only one of the parental genomes through generations of hybrids while the …

Hybridization and polyploidy play an important role in animal speciation. European water
frogs of the Pelophylax esculentus complex demonstrate unusual genetic phenomena …

Many species of amphibians in Northern Europe are threatened and the local distributions
are rarely described in detail. Application of modern molecular methods provides an …

Purpose The study aims to characterise and compare the helminth assemblages and
helminth infracommunities in the marsh frog, Pelophylax ridibundus and the edible frog, P …

Many closely related species are capable of mating to produce hybrid offspring, which are
usually sterile. Nevertheless, altering the gametogenesis of hybrid offspring can rescue …

Background Hybridogenesis can represent the first stage towards hybrid speciation where
the hybrid taxon eventually weans off its parental species. In hybridogenetic water frogs, the …