Publications by authors named "TomAS Mazuch"

Atractaspidines are poorly studied, fossorial snakes that are found throughout Africa and western Asia, including the Middle East. We employed concatenated gene-tree analyses and divergence dating approaches to investigate evolutionary relationships and biogeographic patterns of atractaspidines with a multi-locus data set consisting of three mitochondrial (16S, cyt b, and ND4) and two nuclear genes (c-mos and RAG1). We sampled 91 individuals from both atractaspidine genera (Atractaspis and Homoroselaps).

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Article Synopsis
  • The diversification of species often involves changes in niche requirements to reduce competition, while niche conservatism leads related species to maintain similar needs.
  • The study focuses on the climatic niche evolution of Old World cat snakes (Telescopus), revealing that they likely originated in Africa and independently colonized Arabia and the Levant.
  • Despite the snakes' broad geographic range, most species exhibit similar environmental preferences for arid conditions, suggesting some level of conservation in their climatic niche characteristics.
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Telescopus pulcher is an enigmatic colubrid snake only known from the holotype and paratype specimens described from 'Migiurtinia' in Puntland (Somalia) in 1935. Herein we recorded the third and fourth-ever known specimens of this species from the Toon village, Woqooyi Galbeed Region, and 15 km southeast of Sheikh, Saahil Region, Somaliland. The species is endemic to Somaliland and adjoining parts of Ethiopia and Puntland.

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Article Synopsis
  • Members of the Aparallactinae snake subfamily are found across various habitats in sub-Saharan Africa, with their evolutionary relationships not fully understood despite their monophyly being established.
  • By analyzing 158 individuals from six of the eight genera using multiple genetic markers, the study identifies cryptic lineages and promotes one lineage to full species status.
  • Diversification primarily occurred during the Miocene era, influenced by the Zambezian region's environment, with subsequent species fragmentation linked to climatic changes leading to further diversification events.
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In the present work, we use an exceptional database including 5,359 records of 101 species of Oman's terrestrial reptiles together with spatial tools to infer the spatial patterns of species richness and endemicity, to infer the habitat preference of each species and to better define conservation priorities, with especial focus on the effectiveness of the protected areas in preserving this unique arid fauna. Our results indicate that the sampling effort is not only remarkable from a taxonomic point of view, with multiple observations for most species, but also for the spatial coverage achieved. The observations are distributed almost continuously across the two-dimensional climatic space of Oman defined by the mean annual temperature and the total annual precipitation and across the Principal Component Analysis (PCA) of the multivariate climatic space and are well represented within 17 out of the 20 climatic clusters grouping 10% of the explained climatic variance defined by PC1 and PC2.

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How evolutionary novelties evolve is a major question in evolutionary biology. It is widely accepted that changes in environmental conditions shift the position of selective optima, and advancements in phylogenetic comparative approaches allow the rigorous testing of such correlated transitions. A longstanding question in vertebrate biology has been the evolution of terrestrial life histories in amphibians and here, by investigating African bufonids, we test whether terrestrial modes of reproduction have evolved as adaptations to particular abiotic habitat parameters.

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Hemidactylus laevis, a gekkonid lizard originally described from the Gaan Libah Mountains in Somaliland, is recorded herein from Erigavo, Sanaag Region, in the same state, which represents the second-ever known specimen and locality for this species in more than 100 years since its description. The species is endemic to Somaliland. Data on morphology and natural history, as well as the first life photographs are provided.

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Article Synopsis
  • - The study analyzes genetic data from 80 sphaerodactylid geckos in the Pristurus genus, revealing that P. rupestris consists of two distinct clades: an eastern clade in coastal Iran and Oman, and a western clade spanning central Oman to southern Jordan.
  • - The eastern and western P. rupestris clades are completely different genetically, lacking shared alleles, though they show definable morphological differences that aren't precisely diagnostic.
  • - The research concludes that P. rupestris applies to the eastern clade, while the western clade is temporarily named Pristurus sp. 1, and it supports the idea that P. celerrimus is the oldest species in the
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Coprological examination of nine bush vipers Atheris chlorechis imported from Ghana revealed the presence of a new coccidian species belonging to Eimeria Schneider, 1875. Thin walled oöcysts of Eimeria atheridis n. sp.

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