Václav Gvoždík

Václav Gvoždík
Institute of Vertebrate Biology · Studenec Research Facility

PhD

About

240
Publications
105,108
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Publications

Publications (240)
Preprint
Full-text available
Allopolyploid genomes are divided into compartments called subgenomes that are derived from lower ploidy ancestors. In African clawed frogs of the subgenus Xenopus (genus Xenopus), allotetraploid species have two subgenomes (L and S) with morphologically distinct homoeologous chromosomes. In allotetraploid species of the sister subgenus Silurana, i...
Article
The systematics of the African frog family Hyperoliidae has undergone turbulent changes in last decades. Representatives of several genera have not been genetically investigated or with only limited data, and their phylogenetic positions are thus still not reliably known. This is the case of the De Witte's Clicking Frog (Kassinula wittei) which bel...
Article
Full-text available
The fauna of the Central Congolian Lowland Forests ecoregion in the Democratic Republic of the Congo is poorly known due to the region’s remoteness and limited accessibility. An amphibian survey was conducted in Kokolopori, including the Kokolopori Bonobo Nature Reserve, to fill this gap in our knowledge of its amphibians. All major habitat types w...
Article
Full-text available
Background The application of molecular-phylogenetic approaches to taxonomy has had a dramatic effect on our understanding of the diversity of reptiles. These approaches have allowed researchers to reveal previously hidden lineages as well as taxonomic overestimation in morphologically plastic taxa. Slow worms, legless lizards of the genus Anguis (...
Article
The slow-worm lizards (Anguis) comprise five species occurring throughout most of the Western Palearctic. Although these species are relatively uniform morphologically – with the exception of A. cephallonica, which exhibits a quite unique morphology – they are genetically deeply divergent. Here, we provide detailed distribution maps for each species...
Article
Full-text available
The African anuran genus Cardioglossa contains 19 described species, most of which are distinguished from one another by striking patterns and colors. We present a well-resolved phylogeny based on analyses of mitochondrial and nuclear loci for 18 species of Cardioglossa. This provides the basis for species-delimitation analyses and interpreting his...
Article
Secondary sympatry among sister lineages is strongly associated with genetic and ecological divergence. This pattern suggests that for closely related species to coexist in secondary sympatry, they must accumulate differences in traits that mediate ecological and/or reproductive isolation. Here, we characterized inter‐ and intra‐specific divergence...
Poster
Full-text available
Grayia is a genus of relatively large (1.5 – 2.5 m) aquatic Afrotropical snakes that is currently comprised of four species. Recent molecular phylogenies recovered Grayia in its own distinct subfamily (Grayiinae), which was strongly supported as the sister group to Colubrinae. Because tropical African snakes are generally understudied, the relation...
Article
Puddle frogs of the Phrynobatrachus steindachneri species complex are a useful group for investigating speciation and phylogeography in Afromontane forests of the Cameroon Volcanic Line, western Central Africa. The species complex is represented by six morphologically relatively cryptic mitochondrial DNA lineages, only two of which are distinguishe...
Article
Full-text available
The reed frog genus Hyperolius (Afrobatrachia, Hyperoliidae) is a speciose genus containing over 140 species of mostly small to medium-sized frogs distributed in sub-Saharan Africa. Its high level of colour polymorphism, together with in anurans relatively rare sexual dichromatism, make systematic studies more difficult. As a result, the knowledge...
Article
Five European slow worms ( Anguis ) have mostly parapatric distributions. Two species, A. fragilis and A. colchica , are widely distributed across the western and eastern parts of the genus range. Their contact zone runs from the north-eastern Balkans, through Pannonia to northern Central Europe. In northern Poland, the contact zone has been locate...
Article
Full-text available
Phylogenetic relationships of sub-Saharan African natricine snakes are understudied and poorly understood, which in turn has precluded analyses of the historical biogeography of the Seychelles endemic Lycognathophis seychellensis. We inferred the phylogenetic relationships of Seychelles and mainland sub-Saharan natricines by analysing a multilocus...
Preprint
Full-text available
Puddle frogs of the Phrynobatrachus steindachneri species complex are a useful group for investigating speciation and phylogeography in Afromontane forests of the Cameroon Highlands (Cameroon Volcanic Line) in western Central Africa. The species complex is represented by six morphologically relatively cryptic mitochondrial DNA lineages, with only t...
Article
Full-text available
The Cameroon Volcanic Line, a mountain chain located between West and Central Africa, is a region of numerous endemic diversifications, including of puddle frogs ( Phrynobatrachus ). This study reviews the phylogeny and taxonomy of puddle frogs of the “Cameroon radiation,” which is a clade containing mainly montane but also at least three lowland s...
Article
Full-text available
Kinixys spekii has a wide distribution range across sub-Saharan Africa, having been reported from Angola, Botswana, Burundi, the Democratic Republic of the Congo, eSwatini, Kenya, Malawi, Mozambique, Namibia, South Africa, Tanzania, Zambia, and Zimbabwe. Kinixys spekii inhabits savannah and dry bushveld habitats and was previously considered an inl...
Article
Species with wide distributions spanning the African Guinean and Congolian rain forests are often composed of genetically distinct populations or cryptic species with geographic distributions that mirror the locations of the remaining forest habitats. We used phylogeographic inference and demographic model testing to evaluate diversification models...
Article
Full-text available
A comprehensive, accurate, and revisable alpha taxonomy is crucial for biodiversity studies, but is challenging when data from reference specimens are difficult to collect or observe. However, recent technological advances can overcome some of these challenges. To illustrate this, we used modern approaches to tackle a centuries-old taxonomic enigma...
Article
Full-text available
The maternal origin of isolated populations of the common wall lizard (Podracis muralis) in the Czech Republic, representing the northeastern range border of the species, was addressed. We compared mitochondrial DNA sequences of the cytochrome b gene of samples from these populations with those from within the continuous range in Slovakia, the nort...
Article
Theory predicts that sexually dimorphic traits under strong sexual selection, particularly those involved with intersexual signaling, can accelerate speciation and produce bursts of diversification. Sexual dichromatism (sexual dimorphism in color) is widely used as a proxy for sexual selection and is associated with rapid diversification in several...
Article
Full-text available
We analyze a selection of new and published predation cases of spiders (Araneae: Ctenidae and Pisauridae) on Afrotropical anuran amphibians (Amphibia: Anura), including (re-)identifications of the predators and preys involved. Reported cases occurred in Cameroon, Democratic Republic of the Congo, Gabon, Ghana, Ivory Coast, Kenya, Madagascar, Mozamb...
Article
Full-text available
A report bringing new data on the distribution of the Problem Squeaker Frog (Arthroleptis palava) extending its range to the east and north-east into the Gotel Mountains on the Cameroon-Nigeria border and the Tchabal Mbabo massif in Cameroon. A new altitudinal record from the Bamenda Highlands, Cameroon, is also provided.
Preprint
Full-text available
Theory predicts that sexually dimorphic traits under strong sexual selection, particularly those involved with intersexual signaling, can accelerate speciation and produce bursts of diversification. Sexual dichromatism (sexual dimorphism in color) is widely used as a proxy for sexual selection and is associated with rapid diversification in several...
Article
Full-text available
Aim To investigate how putative barriers, forest refugia, and ecological gradients across the lower Guineo‐Congolian rain forest shape genetic and phenotypic divergence in the leaf‐folding frog Afrixalus paradorsalis, and examine the role of adjacent land bridge and sky‐islands in diversification. Location The Lower Guineo‐Congolian Forest, the Ca...
Article
Climatic changes during the Pleistocene played an instrumental role in the shaping recent distribution and diversity of the Western Palearctic biota. Range oscillations often lead to allopatric differentiation followed by the establishment of secondary contact zones. As a result, many species are composed of complex networks of phylogenetic lineage...
Article
Full-text available
Five slow-worm species are distributed in the Palearctic region. Two species, Anguis fragilis and A. colchica, are native to Central Europe, where only limited information on the phylogeography of the genus exists. Here, we examined the situation in Poland and surrounding regions, where a mitochondrial contact zone between the species is expected....
Article
Full-text available
Mesalina are small lacertid lizards occurring in the Saharo-Sindian deserts from North Africa to the east of the Iranian plateau. Earlier phylogenetic studies indicated that there are several species complexes within the genus and that thorough taxonomic revisions are needed. In this study, we aim at resolving the phylogeny and taxonomy of the M. b...
Article
Organismal traits interact with environmental variation to mediate how species respond to shared landscapes. Thus, differences in traits related to dispersal ability or physiological tolerance may result in phylogeographic discordance among co-distributed taxa, even when they are responding to common barriers. We quantified climatic suitability and...
Article
Full-text available
We describe a new minute species of the genus Pristimantis, P. boucephalus sp. nov., from the Yanachaga-Chemillén National Park, Región Pasco, Peru. The description is based on a freshly collected male specimen found at 2950 m a.s.l. in a cloud forest and four previously unidentified museum specimens consisting of two adult males, one subadult fema...
Article
A new semiarboreal species of the Rhinella festae group is described from montane forests of the Cordillera Azul National Park between 1245 and 1280 m a.s.l. in the Cordillera Oriental, San Martín region, northern Peru. The new species is morphologically and genetically compared with members of the Rhinella acrolopha group (former genus Rhamphophry...
Article
Full-text available
A new semiarboreal species of the Rhinella festae group is described from montane forests of the Cordillera Azul National Park between 1245 and 1280 m a.s.l. in the Cordillera Oriental, San Martín region, north-ern Peru. The new species is morphologically and genetically compared with members of the Rhinella acrolopha group (former genus Rhamphophr...
Article
Full-text available
Amphibians are a disproportionately threatened group of vertebrates, the status of which in Sub-Saharan Africa is still uncertain, with heterogeneous fauna punctuated by mountains. Mount Oku, Cameroon is one such mountain, which holds many endemic and restricted-range species. The history of amphibian research on Mt Oku, current knowledge on biogeo...
Article
Full-text available
The Mascarene ridged frog, Ptychadena mascareniensis, is a species complex that includes numerous lineages occurring mostly in humid savannas and open forests of mainland Africa, Madagascar, the Seychelles, and the Mascarene Islands. Sampling across this broad distribution presents an opportunity to examine the genetic differentiation within this c...
Article
Full-text available
The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009;...
Data
This plot is not part of the published stance but derives from it. The plot shows the number of authors by geographic region (courtesy of Dr. Diego Astua).
Article
Full-text available
The niche-filling process predicted by the 'ecological opportunity' (EO) model is an often-invoked mechanism for generating exceptional diversity in island colonizers. Whether the same process governs lineage accumulation and trait disparity during continental colonization events is less clear. Here we test this prediction by investigating the rate...
Article
Full-text available
Background Genetic architecture of a species is a result of historical changes in population size and extent of distribution related to climatic and environmental factors and contemporary processes of dispersal and gene flow. Population-size and range contractions, expansions and shifts have a substantial effect on genetic diversity and intraspecif...
Article
Full-text available
This study summarizes the faunistic and natural history information for 38 amphibians and 17 species of reptiles recorded in and in the vicinity of the northern part of the Regional Conservation Area Imiría (Region Ucayali, Peru). Considerable extensions in ranges of Pristimantis delius Duellman et Mendelson, 1995 (Craugastoridae) and Osteocephalus...
Article
Full-text available
This study summarizes the faunistic and natural history information for 38 amphibians and 17 species of reptiles recorded in and in the vicinity of the northern part of the Regional Conservation Area Imiría (Region Ucayali, Peru). Considerable extensions in ranges of Pristimantis delius Duellman et Mendelson, 1995 (Craugastoridae) and Osteocephalus...
Article
Full-text available
African clawed frogs, genus Xenopus, are extraordinary among vertebrates in the diversity of their polyploid species and the high number of independent polyploidization events that occurred during their diversification. Here we update current understanding of the evolutionary history of this group and describe six new species from west and central...
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Full size version of Fig 6, part two of three. (TIF)
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Full size version of Fig 7, part two of three. (TIF)
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Photographs of type material from several previously described Xenopus taxa part two of six. (TIF)
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Photographs of type material from several previously described Xenopus taxa part three of six. (TIF)
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Photographs of type material from several previously described Xenopus taxa part four of six. (TIF)
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X-ray of X. eysoole holotype (MCZ A-138016). (TIF)
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Analysis of mitochondrial DNA data using the calibration from [9]. Labeling follows Fig 2. (TIF)
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Photographs of type material from several previously described Xenopus taxa part six of six. (TIF)
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Specimens for which sequence data were obtained. (XLSX)
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Full size version of Fig 6, part one of three. (TIF)
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Full size version of Fig 7, part one of three. (TIF)
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Full size version of Fig 7, part three of three. (TIF)
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Photographs of type material from several previously described Xenopus taxa part one of six. Images include, from subgenus Silurana: X. tropicalis (BMNH 1947.2.24.83) and X. epitropicalis (BMNH 1982.462), from amieti species group: X. amieti (MHNG 2030.80), X. andrei (MHNG 2088.32), X. boumbaensis (MHNG 2080.31), X. itombwensis (MCZ A-138192), X. l...
Data
Photographs of type material from several previously described Xenopus taxa part five of six. (TIF)
Data
Analysis of mitochondrial DNA data using the calibration from [9]. Labeling follows Fig 1. (TIF)
Data
Full size version of Fig 6, part three of three. (TIF)
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Specimens examined and morphological data. (XLSX)