C.B. Costa results 306
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This study evaluated the effects of providing 3–15 kg of a soluble and biodegradable biopolymer-based enrichment material (blend of biodegradable polymers and natural fibers) to prepartum sows housed in farrowing crates. Fifteen sows were blocked by body weight and backfat thickness and assigned to three treatments: no enrichment material (CONT), 3 kg of enrichment material (BN3), or 15 kg of enrichment material with added nut...
Theobroma cacao L. genetic transformation still relies predominantly on somatic embryogenesis-based systems, which are often genotype-dependent, labor-intensive, and associated with prolonged culture periods. In this study, we developed an alternative regeneration platform based on mature seed-derived embryonic axes and evaluated its suitability for biolistic DNA delivery. Embryonic axes from the cacao cultivars ‘TSH1188’ and...
Early Detection of Soil Multifunctionality Loss in Amazonian Mangroves Driven by Land Use ChangeNARA Subscribed
Mangroves are a vital ecosystem for coastal biodiversity and climate regulation but face increasing pressure from agriculture and aquaculture expansion. These threats promote high levels of degradation from direct land use change and hidden impacts from aquaculture effluents rich in nitrogen, phosphorus, and organic compounds. We developed a soil health index to detect different stages of mangrove ecosystem degradation by inco...
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...
An exceptionally large blood O 2 store underlies the remarkable dive performance of elephant seals. However, elevated carboxyhemoglobin (COHb) concentrations in these seals complicate estimations of blood O 2 content and O 2 depletion rates, and may also affect monitoring of brain oxygenation in seals with new non-invasive near-infrared (NIR) recorders. Using hemoximetry analyses of blood samples during sleep apneas of juvenil...
Peripheral microRNA signature in genetic frontotemporal dementia—findings from the GENFI initiativeNARA Subscribed
Frontotemporal dementia (FTD) is a neurodegenerative disease characterized by significant clinical and genetic heterogeneity, with approximately 40% of cases linked to hereditary genetic mutations, including MAPT , GRN , and C9ORF72 . Recently, microRNAs (miRNAs) have emerged as key regulators of cellular processes related to neurodegeneration and as potential biomarkers for FTD. However, their relevance in presymptomatic stag...
Deuterolysin metalloproteases (M35s), a family of zinc-dependent proteolytic enzymes, function as key virulence factors in bacteria and fungi. In plant-pathogenic fungi, these proteins induce host cell death and suppress plant chitinases, thereby protecting fungal cell walls from degradation and preventing the release of chitin oligomers that trigger plant immune responses. Here, we investigated the evolutionary history of the...
Repellent activity and toxicity of the essential oil of Calyptranthes concinna DC. using the model insect Drosophila melanogasterNARA Subscribed
Insects, belonging to the phylum Arthropoda, play essential roles in ecosystems, play essential roles in ecosystems, such as pollination, pest control, and decomposition. However, some species are vectors of diseases, which makes the development of control methods crucial. The use of synthetic insecticides, although effective, causes serious environmental and health problems. As an alternative, plant essential oils, which are...
The regeneration of the sponge Hymeniacidon heliophila was investigated using the in vitro microexplant model. This model differs from cell dissociation, surface ablation, and fragment culture models because it preserves the choanosome attached to the substrate, maintaining the apical-basal axis while entirely lacking the ectosome and the water flow polarity (ostia-osculum). The complete ectosome regenerative development was a...
Monitoring the health of cattle herds is essential for establishing prophylactic measures and reducing their impact on the production chain, especially in regions where beef cattle form the economic base. This study aimed to determine the serological profile of infectious bovine rhinotracheitis (IBR), bovine viral diarrhea (BVD), leptospirosis, toxoplasmosis, and neosporosis in beef cattle slaughtered in a federally inspected...
Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species by assessing the vulnerability of 256 marine megafauna species to 23 at‐sea threat...