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Molecular phylogeny of the stingless bees (Apidae, Apinae, Meliponini) inferred from mitochondrial 16S rDNA sequences
TLDR
The African genus Hypotrigona was placed as the most basal branch in the tribe, followed by Austroplebeia as the sister group of other two major clades (C and D). Expand
A Cytogenetic Approach to the Study of Neotropical Odontomachus and Anochetus Ants (Hymenoptera: Formicidae)
TLDR
The cytogenetic results lend support to Brown's hypothesis that Odontomachus has evolved from a lineage of Anochetus and can be explained by a model of evolution in which there is a tendency to the increase of chromosome number by centric fission. Expand
Comparative molecular cytogenetics in Melipona Illiger species (Hymenoptera, Apidae)
TLDR
The aim of this study was to perform karyotype analyzes on Melipona species from different regions of Brazil, with a greater sampling representative of the Amazonian fauna and using conventional, fluorochrome staining and FISH with heterologous rDNA probes. Expand
Pliocene and Pleistocene events shaping the genetic diversity within the central corridor of the Brazilian Atlantic Forest
TLDR
It is argued that, for some Atlantic forest endemic species, especially those resistant to very small fragments of forest, such as D. lucida, the small putative refuges were as important as, or even more important than, larger and stableRefuges for the creation and maintenance of diversity, adding another piece to the puzzle of the mechanisms underlying local endemism. Expand
Molecular Phylogeny and Historical Biogeography of the Neotropical Swarm-Founding Social Wasp Genus Synoeca (Hymenoptera: Vespidae)
TLDR
The Bayesian divergence dating analysis revealed recent Plio-Pleistocene diversification in Synoeca, and the biogeographical analysis suggested an Amazonian origin of SyNoeca, with three main dispersal events subsequently occurring during the Plio, Pleistocene. Expand
A new stingless bee species of the genus Scaura (Hymenoptera, Apidae) from the Brazilian Atlantic forest, with notes on S. latitarsis (Friese)
TLDR
A worker syntype from Brazil (Jundia, S o Paulo) is here designated lectotype in order to stabilize the taxonomy of the latitarsis group. Expand
Safety evaluation of proanthocyanidin polymer-rich fraction obtained from stem bark of Stryphnodendron adstringens (BARBATIMAO) for use as a pharmacological agent.
TLDR
Results indicated that F2 obtained from stem bark of S. adstringens has no genotoxic activity, and the widespread use of medicinal plants among the Brazilian population warrants an assessment of the potential risks associated with their intake. Expand
Chromosome Polymorphism in Phyllomedusa rohdei Populations (Anura: Hylidae)
TLDR
Cytogenetic analysis through conventional Giemsa staining and Ag-NOR banding of P. rohdei samples from two localities in the Atlantic Rainforest revealed intraspecific karyotype variation. Expand
Numerical and structural chromosome variation in the swarm-founding wasp Metapolybia decorata Gribodo 1896 (Hymenoptera, Vespidae)
TLDR
An intraspecific numerical-structural chromosome variation in the swarm-founding wasp Metapolybia decorata from the Brazilian Atlantic Rainforest is reported indicating that the species is undergoing a continued process of karyotype evolution leading to fused chromosome stabilization by elimination of inactive centromeric sequences. Expand
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