The Paraguayan hairy dwarf porcupine ( Coendou spinosus , Cuvier, 1823) is a rodent species (Rodentia, Erethizontidae) widely distributed in the Brazilian Atlantic forest. However, little is known about their viral diversity. In this study, we aimed to evaluate, using high-throughput sequencing (HTS), the virome of the feces of seven healthy adult free-living porcupines from Silva Jardim, Rio de Janeiro, Brazil. Total viral nu...

The objective of this study was to evaluate the effects of immunocastration and ractopamine hydrochloride (RAC) supplementation on growth performance and carcass traits of male pigs slaughtered 21 days after the second immunization. Sixty-four pigs (Landrace × Large White, initial body weight 103.05 ± 0.67 kg) were individually tagged and randomly assigned to a 2 × 2 factorial arrangement in a completely randomized design, con...

The El Niño –Southern Oscillation (ENSO) profoundly alters climatological and hydrological conditions, reshaping environmental gradients and ecological dynamics in riverine, estuarine, and coastal ecosystems. We hypothesized that El Niño events would promote homogenization of fish assemblages and reduce β-diversity, whereas La Niña conditions would enhance habitat differentiation and increase β-diversity. To test this hypothes...

Aim We investigate the distribution of dispersal modes — endozoochory (via animal ingestion), synzoochory (via animal seed accumulation) and anemochory (via wind)—and seed mass of woody plants across Brazilian ecosystems, testing whether their relative abundance in local plant communities could be predicted by climate, edaphic factors and dispersal agents (e.g., the main vectors moving seeds). We expected climate to be the mai...

Efficient water resources management relies on spatiotemporal water quality analysis, particularly in the Guandu River basin, the main water supply source for the Rio de Janeiro Metropolitan Region. This study aims to perform a spatiotemporal analysis of water quality parameters and indices in the Guandu River basin, highlighting seasonal variability and anthropogenic influences. Data from 28 water quality monitoring stations...

The Cerrado biome, spanning ~2 million km 2 , is one of the most extensive and biodiverse tropical savannas, yet it is paradoxically dominated by only 30 hyperdominant tree species (~2% of all species, > 50% of all stems). However, their vulnerability to climate change and the effectiveness of current conservation efforts remain uncertain. By combining (i) species distribution models calibrated with edaphic‐climatic predictors...

Localized cutaneous leishmaniasis (LCL) is the most prevalent form of leishmaniasis, with infection control primarily dependent on cell-mediated immunity. Lesion healing results from a complex interplay among immune cells and soluble mediators. Using Luminex technology, we evaluated circulating and lesion microenvironment immune mediators, including chemokines, cytokines, and growth factors, in patients with LCL and nonspecifi...