Publications by authors named "Julia Vergara"

This paper addresses the population genetic structure of the 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 and defined upon geographic and vegetation features. Given the current environmental uniformity, it was aimed to assess whether molecular fingerprints of G.

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Article Synopsis
  • Extracellular vesicles (EVs) from virus-infected cells could aid in vaccine development by encapsulating viral peptides and indicating tissue changes in infections.
  • Blood samples from severe COVID-19 patients, mild cases, and uninfected healthcare workers were collected to analyze the molecular characteristics of EVs and identify suitable vaccine peptides.
  • Despite the expectation to find viral peptides, the proteomic analysis revealed no such findings, but highlighted a diverse EV cargo linked to inflammation and viral replication, suggesting EVs play a significant role in COVID-19 pathology.
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The disjunct distribution of the harvestman Discocyrtus dilatatus (Opiliones, Gonyleptidae) is used as a case study to test the hypothesis of a trans-Chaco Pleistocene paleobridge during range expansion stages. This would have temporarily connected humid regions ('Mesopotamia' in northeastern Argentina, and the 'Yungas' in the northwest, NWA) in the subtropical and temperate South American lowlands. The present study combines two independent approaches: paleodistributional reconstruction, using the Species Distribution Modeling method MaxEnt and projection onto Quaternary paleoclimates (6 kya, 21 kya, 130 kya), and phylogeographic analyses based on the cytochrome oxidase subunit I molecular marker.

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The presence of Gryne orensis (Sørensen) (Opiliones: Cosmetidae) in a Yungas locality (northwestern Argentina) is reported for the first time, providing new evidence for the Mesopotamian-Yungas disjunct pattern. Combining a total of 19 new Mesopotamian records with previous, reliable citations from the literature, a dataset of 45 points was used to model the potential distribution of the species, using the presence-only methods BIOCLIM and MAXENT. Models supported the existence of a distributional gap across the Semiarid Chaco.

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The European wild boar Sus scrofa was first introduced into Uruguay, in southern South America during the early decades of the last century. Subsequently, and starting from founder populations, its range spread throughout the country and into the neighbouring Brazilian state Rio Grande do Sul. Due to the subsequent negative impact, it was officially declared a national pest.

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Copper in drinking water has been associated with non-Indian childhood cirrhosis (NICC), a form of liver cirrhosis in childhood. This epidemiological study examines the exposure of infants to increased copper concentrations through drinking water from public water supplies in southern Lower Saxony, Germany, and whether this dietary copper intake causes liver damage in early childhood. In total, water samples from 1674 households with infants were tested for copper.

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