| phylogeography of a widespread terrestrial vertebrate in a barely-studied palearctic region: green toads (bufo viridis subgroup) indicate glacial refugia in eastern central asia. | the phylogeography of western palearctic species is relatively well studied, but data on eastern central asia are scarce. we present one of the first data sets from a widespread terrestrial vertebrate (bufo pewzowi) inhabiting eastern central asian mountains and deserts to gain knowledge on its phylogeography in this region. we applied combined phylogenetic and demographic analyses to understand the evolutionary history using mitochondrial dna d-loop variation of toads from 37 locations. genetic ... | 2008 | 18301990 |
| a vertebrate reproductive system involving three ploidy levels: hybrid origin of triploids in a contact zone of diploid and tetraploid palearctic green toads (bufo viridis subgroup). | the rise and consequences of polyploidy in vertebrates, whose origin was associated with genome duplications, may be best studied in natural diploid and polyploid populations. in a diploid/tetraploid (2n/4n) geographic contact zone of palearctic green toads in northern kyrgyzstan, we examine 4ns and triploids (3n) of unknown genetic composition and origins. using mitochondrial and nuclear sequence, and nuclear microsatellite markers in 84 individuals, we show that 4n (bufo pewzowi) are allopolyp ... | 2010 | 19863582 |
| characterization of the mitochondrial genomes of two toads, anaxyrus americanus (anura: bufonidae) and bufotes pewzowi (anura: bufonidae), with phylogenetic and selection pressure analyses. | mitogenomes are useful in analyzing phylogenetic relationships and also appear to influence energy metabolism, thermoregulation and osmoregulation. much evidence has accumulated for positive selection acting on mitochondrial genes associated with environmental adaptation. hence, the mitogenome is a likely target for environmental selection. the family bufonidae (true toads) has only nine complete and four partial mitogenomes published compared to the 610 known species of this family. more mitoge ... | 2020 | 32328346 |