Universidade Federal de Lavras

Limited global awareness of invasive alien species and little support for their management

Invasive alien species (IAS) are one of the main drivers of global change and can cause a wide range of negative ecological and social impacts. Addressing these impacts requires management actions, which can fail to be effective when not supported by the public. Here, we conducte...

Insecticidal Activity of Essential Oils from Syzygium aromaticum and Foeniculum vulgare Var. dulce and Their Major Compounds Against Spodoptera frugiperda and Physiological Selectivity for Trichogramma pretiosum

Spodoptera frugiperda (Lepidoptera: Noctuidae) causes significant losses in major crops and is mainly controlled with chemical insecticides and genetically modified plants; however, improper use of these strategies has led to the development of resistant populations. We evaluated...

Standardized rearing in earwigs for biological control: insights from the predator Doru luteipes

Abstract Efficient laboratory rearing and behavioral optimization of natural enemies are essential for advancing biological control programs. This study evaluated how rearing standardization influence the reproductive output of the earwig Doru luteipes (Scudder) (Dermaptera: Forf...

Effects of alkaline hydrothermal extraction on the molecular organization and antioxidant activity of humic substances derived from sugarcane straw hydrochar

Hydrothermal humic acids (HHA) have attracted attention due to their redox-active properties and potential for lignocellulosic waste valorization. However, the effects of alkaline hydrothermal extraction temperature on their molecular organization and antioxidant activity remain...

Amazonian forest residues as bioenergy resources: pyrolysis behavior, kinetic triplets and model validation

Wood residues from sustainable forest management in the Amazon represent an underexploited feedstock for thermochemical conversion, yet the pyrolysis kinetics of these materials remain poorly characterized. Eleven native Amazonian species were physicochemically characterized and...

L-Glutamic acid production by lactic acid bacteria from Brazilian fermented foods: screening, optimization, and probiotic-related properties of Limosilactobacillus fermentum CCMA 0205

L-Glutamic acid (L-Glu) is an amino acid of considerable industrial importance owing to its widespread application as a flavor enhancer and its increasing use in food biotechnology. The identification of novel microbial producers and the optimization of fermentation processes rem...

Anthropogenic disturbance drives compositional and structural shifts in cerrado stream fish assemblages

Abstract Currently, one of the main threats to freshwater ecosystems is the conversion of natural areas into croplands, pastures, and urban landscapes. Therefore, understanding how fish assemblages respond to gradients of land use related anthropogenic disturbance is essential. T...

161. Performance and Carcass Responses of Feedlot Beef Heifers Fed a Magnesium Oxide Blend.

Abstract Subacute ruminal acidosis is a common challenge in high-energy feedlot diets and can negatively affect intake patterns, efficiency, and carcass yield. Magnesium-based buffering agents have been proposed as a nutritional strategy to stabilize ruminal conditions in high-st...

PS12-11. Prepartum Rumen-Protected B Vitamin Complex Supplementation Improves Maternal Reserves, Colostrum Yield, and Reproductive Responses in Beef Cows.

Abstract Late gestation is characterized by increased metabolic demands that may compromise maternal reserves and influence fetal development and postpartum performance in beef cows, and B-complex vitamins act as essential cofactors in oxidative metabolism, gluconeogenesis, and o...

A Geometric and Metric-Measure Framework for the Yang–Mills Mass Gap

This paper proves no mass gap. Its main result is a conditional theorem, and the existence of a mass gap in four-dimensional Yang–Mills theory remains open. The conditional theorem assumes two things: 1. the ground-state measures of regularized Yang–Mills Hamiltonians on the Grib...

Combining genomic prediction and multi-trait indices through stochastic simulations: do index type and deployment order affect genetic gain?

Abstract Genomic selection (GS) has transformed plant breeding by enabling early selection and potentially reducing cycle length, but how to integrate GS with classical multi-trait selection indices remains unclear. We used stochastic simulations to compare seven strategies combi...

Forest Fragment Proximity as an Important Predictor of Restoration Success in Mining‐Degraded Areas

ABSTRACT Ecological restoration is essential for achieving global climate and biodiversity targets, particularly in tropical landscapes affected by large‐scale disturbances. Following the 2015 Fundão tailings dam collapse in Mariana, Brazil, extensive areas of the Atlantic Forest...

Environmental performance of hydrogen production via eucalyptus biomass gasification and natural gas steam reforming: A life cycle assessment approach

A life cycle assessment (LCA) was conducted to compare hydrogen production via steam methane reforming (SMR) of natural gas and eucalyptus biomass gasification under Brazilian conditions. Three scenarios were evaluated for the production of 1 kg of hydrogen: (i) SMR, (ii) SMR wit...

Untargeted LC-HRMS/MS and Feature-Based Molecular Networking Reveal Distinct Metabolic Signatures in Edible Dahlia Types

Abstract Edible flowers represent chemically diverse food matrices whose characterization increasingly relies on advanced metabolomic approaches. This study employed untargeted liquid chromatography–high-resolution tandem mass spectrometry (LC-HRMS/MS) combined with feature-based...

Habitat Complexity and Seasonal Variation Factors Shape the Polychaete Assemblies Associated with the Holdfast of Lessonia berteroana

Lessonia berteroana is a structuring macroalga that houses a high diversity of benthic invertebrates in southeastern Pacific rocky ecosystems. The present study assessed the diversity and structure of the community of polychaetes associated with the holdfast of L. berteroana at t...

Eucalyptus plantations act as environmental filters on bat functional traits in a Neotropical landscape

Abstract Habitat loss and agricultural expansion are among the primary drivers of biodiversity loss worldwide, with Neotropical regions being particularly vulnerable due to their high biological diversity and elevated rates of land-use conversion. Studies assessing how these chan...

Epoxidation of ent-pimara-8(14),15-dien-19-oic acid by whole cells of the endophytic fungus Aspergillus sclerotiorum

Abstract The diterpene ent -pimara-8(14),15-dien-19-oic acid ( 1 ) was converted into four oxidized diterpenes, 15,16-epoxy- ent -pimar-8(14)-en-19-oic acid ( 1a ), 15,16-epoxy-17-hydrxy- ent -pimar-8(14)-en-19-oic acid ( 1b ), 15,16-dihydroxy- ent -pimar-8(14)-en-19-oic acid ( 1...

Comparative Study of the Dynamic Behavior of Conventional Concrete and Bioaggregate Concrete Containing Macauba Endocarp Through Experimental Modal Analysis

The incorporation of agro-industrial residues as alternative aggregates in cement-based composites represents a promising strategy for reducing the consumption of natural mineral resources and promoting more sustainable construction materials. This study compared the frequency-do...

Tailings piles and the Global Industry Standard on Tailings Management: evaluating the distribution of risks within the standard

Abstract Disasters involving tailings dams in Brazil have highlighted gaps in risk management and control systems, encouraging the adoption of alternatives such as dry-stacked tailings facilities. In this context, the Global Industry Standard on Tailings Management (GISTM) establ...

The Yang-Mills Mass Gap Trilogy: A Geometric and Metric-Measure Framework

Abstract & Theoretical Summary: We develop an exact, non-perturbative geometric and metric-measure framework for four-dimensional pure quantum Yang-Mills theory with compact simple gauge group G=SU(N)G=SU(N) formulated on the fundamental Gribov modular region Ω⊂A/GΩ⊂A/G. Drawing...