Multiple evolutionary units and demographic stability during the last glacial maximum in the Scytalopus speluncae complex (Aves: Rhinocryptidae).
Molecular Phylogenetics and Evolution 102:86 (2016)
The Atlantic Forest (AF) of South America harbors one of the world's highest bird species richness, but to date there is a deficient understanding of the spatial patterns of genetic diversity and the evolutionary history of this biome. Here we estimated the phylogenetic and populational history ...
Could refuge theory and rivers acting as barriers explain the genetic variability distribution in the Atlantic Forest?
Molecular Phylogenetics and Evolution 101:242 (2016)
The Atlantic Forest is one of the most species-rich ecoregions in the world. The historical origins of this richness and the evolutionary processes that produced diversification and promoted speciation in this ecosystem remain poorly understood. In this context, focusing on Passiflora contracta,...
High levels of genetic diversity and population structure in an endemic and rare species: implications for conservation.
AoB Plants 8 (2016)
The analysis of genetic structure and variability of isolated species is of critical importance in evaluating whether stochastic or human-caused factors are affecting rare species. Low genetic diversity compromises the ability of populations to evolve and reduces their chances of survival under ...
Ancient remains and the first peopling of the Americas: Reassessing the Hoyo Negro skull.
American Journal of Physical Anthropology 158(3):514 (2015)
A noticeably well-preserved ∼12.500 years-old skeleton from the Hoyo Negro cave, Yucatán, México, was recently reported, along with its archaeological, genetic and skeletal characteristics. Based exclusively on an anatomical description of the skull (HN5/48), Chatters and colleagues stated that ...
Novel microsatellites for Calibrachoa heterophylla (Solanaceae) endemic to the South Atlantic Coastal Plain of South America.
Applications in Plant Sciences 3(7) (2015)
Calibrachoa heterophylla (Solanaceae) is a petunia species restricted to the South Atlantic Coastal Plain of South America and presents a recent history of colonization from continental to coastal environments and diversification following the formation of the Coastal Plain during the Quaternary...
Pollen dispersal and breeding structure in a hawkmoth-pollinated Pampa grasslands species Petunia axillaris (Solanaceae).
Annals of Botany 115(6):939 (2015)
The evolution of selfing is one of the most common transitions in flowering plants, and this change in mating pattern has important systematic and ecological consequences because it often initiates reproductive isolation and speciation. Petunia axillaris (Solanaceae) includes three allopatric su...
Were sea level changes during the Pleistocene in the South Atlantic Coastal Plain a driver of speciation in Petunia (Solanaceae)?
BMC Evolutionary Biology 15:92 (2015)
Quaternary climatic changes led to variations in sea level and these variations played a significant role in the generation of marine terrace deposits in the South Atlantic Coastal Plain. The main consequence of the increase in sea level was local extinction or population displacement, such that...
Genetic differentiation and hybrid identification using microsatellite markers in closely related wild species.
AoB Plants 7 (2015)
Identifying the genetic basis of speciation is critical for understanding the evolutionary history of closely related wild species. Recently diverged species facilitate the study of speciation because many genetic and morphological characteristics are still shared by the organisms under study. T...
Diversification in the South American Pampas: the genetic and morphological variation of the widespread Petunia axillaris complex (Solanaceae).
Molecular Ecology 23(2):374 (2014)
Understanding the spatiotemporal distribution of genetic variation and the ways in which this distribution is connected to the ecological context of natural populations is fundamental for understanding the nature and mode of intraspecific and, ultimately, interspecific differentiation. The Petun...
Reconciling pre-Columbian settlement hypotheses requires integrative, multidisciplinary, and model-bound approaches.
PNAS 111(2):E213 (2014)
Molecular insights into the purple-flowered ancestor of garden petunias.
American Journal of Botany 101(1):119 (2014)
The garden petunia is derived from Petunia axillaris (white flowered) and a purple-flowered species in the P. integrifolia group; it is still unclear which purple-flowered species was used in the initial crosses. This widely cultivated hybrid is an ideal model for different areas of scientific i...
Development of microsatellites for Verbenoxylum reitzii (Verbenaceae), a tree endemic to the Brazilian Atlantic Forest.
Applications in Plant Sciences 1(8) (2013)
Microsatellite markers were developed for Verbenoxylum reitzii (Verbenaceae), a tree endemic to the Brazilian Atlantic Forest, to investigate their usefulness in population genetic studies. The loci were tested for cross-amplification in the related genera Recordia and Duranta. •
Geological and climatic changes in quaternary shaped the evolutionary history of Calibrachoa heterophylla, an endemic South-Atlantic species of petunia.
BMC Evolutionary Biology 13:178 (2013)
The glacial and interglacial cycles that characterized the Quaternary greatly affected the distribution and genetic diversity of plants. In the Neotropics, few phylogeographic studies have focused on coastal species outside of the Atlantic Rainforest. Climatic and sea level changes during the Qu...
Phylogeny, biogeography and divergence times in Passiflora (Passifloraceae).
Genetics and Molecular Biology 35(4 (suppl)):1036 (2012)
As part of a long-term investigation on the evolution of Passiflora L., we investigated the divergence ages of the genus and diversification of its subgenera, relating them with biogeographical and/or historical events, and other characteristics of this taxon. The main aim of the present work wa...
Microsatellites in Aureliana fasciculata var. fasciculata (Solanaceae), a shrub that inhabits the Atlantic Rainforest.
American Journal of Botany 99(4):e173 (2012)
Microsatellite primers were developed in Aureliana fasciculata var. fasciculata, a shrub that inhabits the Atlantic Rainforest, to investigate the intraspecific genetic structure of the species.
Nine pairs of microsatellite primers were designed that were based on a simple sequence repeat (SSR)-...
The population genetics of Quechuas, the largest native South American group: autosomal sequences, SNPs, and microsatellites evidence high level of diversity.
American Journal of Physical Anthropology 147(3):443 (2012)
Elucidating the pattern of genetic diversity for non-European populations is necessary to make the benefits of human genetics research available to individuals from these groups. In the era of large human genomic initiatives, Native American populations have been neglected, in particular, the Qu...
Cultural diversification promotes rapid phenotypic evolution in Xavánte Indians.
PNAS 109(1):73 (2012)
Shifts in social structure and cultural practices can potentially promote unusual combinations of allele frequencies that drive the evolution of genetic and phenotypic novelties during human evolution. These cultural practices act in combination with geographical and linguistic barriers and can ...
An alternative model for the early peopling of southern South America revealed by analyses of three mitochondrial DNA haplogroups.
PLoS ONE 7(9):e43486 (2012)
After several years of research, there is now a consensus that America was populated from Asia through Beringia, probably at the end of the Pleistocene. But many details such as the timing, route(s), and origin of the first settlers remain uncertain. In the last decade genetic evidence has taken...
Isolation and characterization of microsatellite markers for Passiflora contracta.
International Journal of Molecular Sciences 13(9):11343 (2012)
Passiflora contracta Vitta (Passifloraceae) is an endemic species of the Atlantic Rainforest, one of the most species-rich ecoregions in the world, although extremely endangered. We have developed an enriched microsatellite library in order to fine-scale studies of the genetic structure of P. co...
A new subhaplogroup of native American Y-Chromosomes from the Andes.
American Journal of Physical Anthropology 146(4):553 (2011)
The human Y chromosome contains highly informative markers for making historical inferences about the pre-Columbian peopling of Americas. However, the scarcity of these markers has limited its use in the inference of shared ancestry and past migrations relevant to the origin of the culturally an...