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Fernando Machado Machado results 215 · Newest (Page 1/9, per page 25)
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Brazilian Journal of Microbiology · 2026 · Vol. 57 · Issue 1 · Springer
Noroviruses, the leading cause of nonbacterial acute gastroenteritis outbreaks, are widely detected in wastewater worldwide and reflect community-level viral circulation. These RNA viruses exhibit high mutation and recombination rates, favoring the emergence of novel variants with epidemiological relevance. In this study, wastewater-based epidemiology was applied to monitor the circulation of norovirus genogroups GI and GII in...
Current Microbiology · 2026 · Vol. 83 · Issue 9 · Springer
A novel bacterial species was isolated from the nasal mucosa of Hereford cattle exhibiting early clinical signs of infectious bovine keratoconjunctivitis on a beef cattle farm in the Pampa biome, southern Brazil, in 2018. Cells were Gram-stain-negative cocci and exhibited slow growth under standard laboratory conditions, with optimal growth at 35 °C, pH 7.5, and 1.0% NaCl. The draft genome comprised approximately 1.86 Mbp (Gen...
The implementation of exotic pastures in the Amazon causes drastic negative impacts on its biodiversity. Nevertheless, some species with the ability to colonize pastures may provide important ecosystem services for livestock development in tropical pastures, as in the Amazonian biome. In this study, we evaluated the diversity and assemblage structure of dung beetles, as well as measured their ecological functions (i.e., dung r...
Hydrobiologia · 2026 · Springer
Bioindicators are widely used to describe environmental impacts through rapid and cost-effective assessments. However, identifying them at the species level with detailed quantitative sampling is time-consuming, expensive, and requires specialized knowledge. This study evaluated, using planktonic ciliates, taxonomic and numerical sufficiency approaches to test whether higher taxonomic levels and different numerical resolutions...
Journal of Applied Phycology · 2026 · Vol. 38 · Issue 3 · Springer
Random mutagenesis combined with genome-scale analysis represents a powerful approach to uncover metabolic reprogramming in non-model microalgae. In this study we investigated the strain Desmodesmus sp. Petrobras/FURG, a thermotolerant and contamination-resistant microalga with potential for large-scale cultivation. UV mutagenesis followed by iodine-vapor screening yielded the starch-deficient mutant tN-30, which maintained wi...
Conservation Biology · 2026 · Wiley
Ecological niche models (ENMs) are used to assess the abiotic preferences of species by linking their occurrences to the environmental conditions in which they live. We developed a fossil‐informed ENM framework that integrates mid‐Holocene and modern occurrences to test niche stability and reconstruct abiotic niche characteristics for four critical reef‐building Caribbean coral species (elkhorn coral [ Acropora palmata ], stag...
Biodiversity and Conservation · 2026 · Vol. 35 · Issue 4 · Springer
Land-use changes, driven by the expansion of agriculture and livestock farming, are one of the main drivers of biodiversity loss in the Amazon region. In this context, Succesional Agroforestry Systems - SAFs, emerge as a potential alternative to reconcile agricultural production with biodiversity conservation and restoration. This study assessed the impact of different land-use types on ant diversity and the composition of hab...