Several epidemiological studies have been carried out using Multiple-Locus Variable-number tandem repeat Analysis (MLVA) for M. hyopneumoniae typing. However, a global perspective on the implications of genetic diversity this pathogen is lacking. This study aimed to determine and analyze structure based p97R1-p146R3 MLVA typing scheme characterize, compare types among countries where information was publicly available. A set 797 available data from six different were analyzed Genalex 6.41...

This paper addresses the population genetic structure of forest-dwelling gonyleptid Geraeocormobius sylvarum (Arachnida, Opiliones). Phylogeographic analyses using cytochrome oxidase subunit I (COI) were conducted on 186 individuals from 43 localities in Argentina and Paraguay, arranged into nine operational sectors defined upon geographic vegetation features. Given current environmental uniformity, it was aimed to assess whether molecular fingerprints G. correlate with Pleistocene...

The population genetics of Triatoma dimidiata haplogroups was analyzed at landscape and sub-regional scales in Chiapas regional level across the Mexican Neotropics, phylogeography complex re-analyzed its complete geographic range. Two contiguous fragments ND4 gene were due to bias from differential haplogroup specificity using a previously designed sequence. At both (anthropic modification gradient) (demographic, fragmentation, biogeographic, climate) scales, lowest T. genetic diversity...

The nominal species Oligoryzomys flavescens (yellow pygmy rice rat) appears in different phylogenetic reconstructions as paraphyletic, forming a complex together with fornesi (Fornes' or sp. B. To test if O. includes cryptic species, we used and phylogeographic approach to analyze the evolutionary relationships among lineages of this estimated their geographical distributions using niche modeling analysis. We analyzed portion mitochondrial cytochrome b (Cytb), exon 1 Interphotoreceptor...

The Lutzomyia longipalpis complex has a wide but discontinuous distribution in Latin America, extending throughout the Neotropical realm between Mexico and northern Argentina Uruguay. In Americas, this sandfly is main vector of Leishmania infantum, parasite responsible for Visceral Leishmaniasis (VL). Lu. consists at least four sibling species, however, there no current consensus on number haplogroups, or their divergence. Particularly Argentina, have been few genetic analyses longipalpis,...

González-Ittig, R. E., Salazar-Bravo, J., Barquez, M. & Gardenal, C. N. (2010). Phylogenetic relationships among species of the genus Oligoryzomys (Rodentia, Cricetidae) from Central and South America. —Zoologica Scripta, 39, 511–526. The includes several very similar in external morphology, which has resulted a confusing specific taxonomy. Accurate identification is particularly important because act as natural hosts hantaviruses affecting humans. Here, we assign status to individuals wide...

Several species of the genus Oligoryzomys are natural hosts different hantavirus genotypes affecting humans. The systematics is confusing, which complicates identification rodent host and hence potential endemic areas pulmonary syndrome. In this study, we analyse molecular data to infer phylogenetic relationships among Central South American specimens Oligoryzomys, compare our results with previously published on karyotypic, geographic distribution host–virus associations solve contradictory...

The rodent Oligoryzomys longicaudatus (Bennett, 1832) (Rodentia, Cricetidae) inhabits southern forests of Argentina and Chile, a region severely affected by glaciations during the Pleistocene–Holocene periods. We evaluate here diversity mitochondrial control to characterize genetic structure this species from bushy areas seven populations four Chile. Statistical analyses showed shallow haplotype trees mismatch distributions compatible with recent range expansions. presence “private”...

The systematics and geographical distribution of the species Oligoryzomys present in Argentina are poorly known. From some different hantavirus genotypes have been recovered. In order to contribute accurate identification those infer their phylogenetic relationships, we analysed data restriction sites sequences mtDNA d ‐loop region. samples used represent almost all known occur Argentina. trees obtained with two types were similar, showing high bootstrap values for majority nodes. Our...

Abstract The Pampas of South America represents one the most extended subtropical–temperate grasslands in world. This ecoregion was influenced by Pleistocene climate oscillations. sigmodontine rodent assemblage inhabiting this region is a good model system to analyse impact these changes on evolutionary histories. We performed comparative phylogeographical study seven species evaluate concordance patterns among them, assess if they experienced congruent and synchronous demographic changes,...

The rodent Calomys musculinus is the reservoir of Junin virus, which causes Argentine hemorrhagic fever. A phylogeographic approach was used for analysis 6 populations from central Argentina based on cytochrome-b sequences 27 individuals. Thirteen haplotypes were detected, each closely linked in phylogenetic network; 2 most frequent internal, whereas majority unique to single and presented distal positions network. Most variance explained by within-population genetic diversity. Results a...

The disjunct distribution of the harvestman Discocyrtus dilatatus (Opiliones, Gonyleptidae) is used as a case study to test hypothesis trans-Chaco Pleistocene paleobridge during range expansion stages. This would have temporarily connected humid regions ('Mesopotamia' in northeastern Argentina, and 'Yungas' northwest, NWA) subtropical temperate South American lowlands. present combines two independent approaches: paleodistributional reconstruction, using Species Distribution Modeling method...

The small vesper mouse (Calomys laucha (Fischer, 1814)) (Cricetidae: Sigmodontinae) ranges widely in Brazil, Uruguay, Paraguay, Argentina, and Bolivia. species is the reservoir of Laguna Negra hantavirus (LNV) Paraguay but not where it one most abundant rodents agro-pastoral ecosystems. To answer question if nominal C. constitutes a single genetic unit or presents discontinuities that may relate to hosting LNV, we sequenced cytochrome b (cyt b) gene specimens from throughout range...

The Yungas, a subtropical mountain rainforest of South America, has been little studied in relation to the evolutionary history large-bodied species genus Calomys. Particularly, two have synonymized: C. boliviae and fecundus; first is only known from its type locality northern Bolivian whereas second along Tucumane–Bolivian Yungas shared by Bolivia Argentina. In this study, we combined phylogeographic approach with ecological niche modeling, samples covering most geographic range fecundus....

Abstract The population genetic structure of Oligoryzomys longicaudatus colilargo was examined at two geographical scales: (a) regional, including five populations the Argentinean Patagonia separated by 60–315 km and (b) landscape scale, using from different valleys locality Cholila in subantarctic forest 6–27 km, a nearby Patagonian steppe, with an average distance 33 km. Eight microsatellite loci specific for O. were used as markers. At regional four clusters detected Geneland software....

In recent years, the notion of co-speciation between Hantavirus species and their hosts was discarded in favour a more likely explanation: preferential host switching. However, relative importance this last process shaping evolutionary history hantaviruses remains uncertain, given present limited knowledge not only virus–host relationships but also pathogen reservoir phylogenies. South America, than 25 hantavirus genotypes were detected; several them act as aetiological agents pulmonary...

To increase our understanding of the speciation process occurred in sibling species Graomys griseoflavus and centralis, a phylogeographic study was conducted based on sequences hypervariable segment mtDNA D-loop region. The resulting haplotype phylogenetic network showed two well-defined clusters, one for each species. clusters were connected by haplotypes from localities that are almost 300 km apart, situated Monte eco-region other, Chaco. This result is agreement with previous hypothesis...

This research was aimed to analyse the genetic diversity of Geraeocormobius sylvarum, a forest-dwelling Neotropical harvestman with disjunct distribution, separated by approximately 630 km semi-arid environments. The usefulness fragment cytochrome c oxidase subunit I (COI) mitochondrial gene as molecular marker tested in 109 individuals. Results showed high levels both haplotype and nucleotide populations corresponding north-eastern Argentina, core area species range. A strong structuring...