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Molecular phylogeny of advanced snakes (Serpentes, Caenophidia) with an emphasis on South American Xenodontines: a revised classification and descriptions of new taxa
TLDR
A analise sugere algumas alteracoes de cunho taxonomico dentro dos xenodontineos, incluindo realocacoes genericas para Alsophis elegans, Liophis amarali e modificacoes substanciais em relacao a Xenodontini e a radiacao dos xenodermatideos das Antilhas.
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Phylogeography of the Bothrops jararaca complex (Serpentes: Viperidae): past fragmentation and island colonization in the Brazilian Atlantic Forest
TLDR
A large‐scale survey of the genetic variation at the mitochondrial cytochrome b gene of the pitviper, jararaca lancehead, and two closely related insular species, endemic of the Brazilian Atlantic Forest, corroborating evidences that southern forests may have suffered a more pronounced reduction in area in the late Pleistocene.
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Diversification in vipers: Phylogenetic relationships, time of divergence and shifts in speciation rates.
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Molecular phylogeny of the New World Dipsadidae (Serpentes: Colubroidea): a reappraisal
TLDR
In order to maintain monophyly, the genus Umbrivaga is synonymized with Erythrolamprus, and two new genera are erected to accommodate Phimophis iglesiasi and Clelia rustica, as well as their closely related species.
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Large-scale molecular phylogeny, morphology, divergence-time estimation, and the fossil record of advanced caenophidian snakes (Squamata: Serpentes)
TLDR
An expanded molecular phylogenetic analysis of Caenophidia is provided and it is suggested that all extant families of Colubroidea and Elapoidea composing the present-day endoglyptodont fauna originated rapidly within the early Oligocene–between approximately 33 and 28 Mya–following the major terrestrial faunal turnover known as the “Grande Coupure” and associated with the overall climate shift at the Eocene-Oligocene boundary.
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Genetic relationships and diversity among Brazilian cultivars and landraces of common beans (Phaseolus vulgaris L.) revealed by AFLP markers
TLDR
Results of this study suggest that Brazilian landraces truly represent the overall genetic variability of Phaseolus vulgaris, confirming the multiple origins of these materials, and their potential as a source of variation for breeding programs.
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Hepatitis B virus genotypes from European origin explains the high endemicity found in some areas from southern Brazil.
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Taxonomy based on science is necessary for global conservation
Author(s): Thomson, Scott A; Pyle, Richard L; Ahyong, Shane T; Alonso-Zarazaga, Miguel; Ammirati, Joe; Araya, Juan Francisco; Ascher, John S; Audisio, Tracy Lynn; Azevedo-Santos, Valter M; Bailly,…
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Interrogating genomic-scale data for Squamata (lizards, snakes, and amphisbaenians) shows no support for key traditional morphological relationships.
TLDR
High-throughput sequence data is used from 289 samples covering 75 families of squamates to address phylogenetic affinities, estimate divergence times, and characterize residual topological uncertainty in the presence of genome scale data to address genomic support for traditional taxonomic groupings Scleroglossa and Macrostomata.
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Genetic Diversity Among Brazilian Cultivars and Landraces of Tomato Lycopersicon Esculentum Mill. Revealed by RAPD Markers
TLDR
AMOVA analysis of RAPD data showed that, despite the high within Brazilian landraces and commercial cultivars variation, these two groups are significantly different, indicating that landracing can be a source of variation for breeding programs.
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