nasutus group collected at agricultural sites in Rwanda was described as a new species in the course of a revision of the species of the Hyperolius nasutus group. Its distinct taxonomic status was justified by morphological, bioacoustic, and molecular evidence and it was described as a new species, H. chrysogaster, and the genetic analysis corroborated the species" distinct status.Ī species of Hyperolius collected in the Nyungwe National Park was compared to all other Rwandan species of the genus and to morphologically or genetically similar species from neighbouring countries. DNA was isolated from a Rwandan voucher specimen of P. A key based on qualitative morphological characters was developed, which allows unequivocal identification of specimens of all species that have been recorded from Rwanda. Morphologically they can be unambiguously distinguished from each other and the three other Rwandan species. Two further Ptychadena species were identified among voucher specimens from Rwanda deposited in the collection of the RMCA, P. nilotica, was resurrected from synonymy for this lineage. mascareniensis group was shown to differ from the topotypic population as well as from other genetic lineages in sub-Saharan Africa and an old available name, P. They can be distinguished by morphological characters (morphometrics and qualitative features) as well as by their advertisement calls and genetics. Three species of Ptychadena were recorded in wetlands in the catchment of the Nile. The diversity of the Ridged Frogs in Rwanda was investigated in two studies (Chapters III and IV). The remaining represented undescribed or currently unrecognized taxa, including three species of Hyperolius, two Phrynobatrachus species, one Ptychadena species, and one species of Amietia. The species were readily distinguishable using morphological, bioacoustic, and molecular (DNA barcoding) features, but only eight of the 15 species could be assigned unambiguously to nominal species. Surveys at many other Rwandan localities showed that the species recorded in Butare are widespread in cultivated and pristine wetlands. Rarefaction and jackknife analyses corroborated that the complete current species richness of the assemblage had been recorded, and the results of acoustic niche analysis suggested species saturation of the community. The amphibian community of an agricultural wetland near Butare in southern Rwanda comprised 15 anuran species. The diversity within amphibian communities in cultivated areas in Rwanda and within two selected, taxonomically challenging groups, the genera Ptychadena and Hyperolius, were investigated in this thesis.
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