Article
Entomology
Carlos Eduardo Almeida Luz, Vitor Zuim, Andrea Aparecida Santos Oliveira, Patricia de Jesus dos Santos, Karolayne Lopes Campos, Marcelo Mendes Haro, Lucia Madalena Vivan, Cristina Schetino Bastos, Raul Narciso Carvalho Guedes
Summary: The introduction of genetically modified crops expressing Bt insecticidal proteins has revolutionized insect pest management, but concerns remain about issues like Bt resistance and impacts on non-target arthropod species. A study in the Neotropical region found that Bt cotton did not significantly affect the associated arthropod community, raising questions about its effectiveness in controlling the main target pests.
JOURNAL OF APPLIED ENTOMOLOGY
(2022)
Article
Agriculture, Multidisciplinary
Roberta Ribeiro Coura, Neilier Rodrigues da Silva Junior, Yaremis Merino-Cabrera, Juan Diego Rios Diez, Rafael Almeida Barros, Samuel Lessa Barbosa, Joao Vitor Aguilar de Oliveira, Gabriele Correa da Rocha, Jose Eduardo Serrao, Humberto Josue de Oliveira Ramos, Maria Goreti de Almeida Oliveira
Summary: This study found that the synthetic PIs may trigger a reprogramming of protein isoforms related to protease activity and stress processes, with SKTI showing less extensive reprogramming. Additionally, Berenil led to a significant reduction in midgut protease activity at the initial stages of treatment.
ANNALS OF APPLIED BIOLOGY
(2022)
Review
Entomology
Leonardo M. Turchen, Lirio Cosme, Jayne E. Yack, Raul Narciso C. Guedes
Summary: Research on insect biotremology has revealed biases and knowledge gaps in terms of taxa, developmental stages, and research topics. The study found that studies on Hemiptera, Hymenoptera, and Coleoptera were prevalent, with a focus on adults and reproductive behaviors. Further research is needed on the role of vibrations in adaptive contexts, particularly in juveniles, and across a wider range of taxa.
ENTOMOLOGIA GENERALIS
(2022)
Article
Entomology
Geverson A. Resende-Silva, Jessica N. Bravim, Marcelo M. Haro, G. Christopher Cutler, Antonio A. Silva, Raul Narciso C. Guedes
Summary: The use of insecticides remains widespread and controversial globally. Neonicotinoid insecticides have been implicated in declines in pollinators and decreases in insect diversity. This study analyzed the impact of the neonicotinoid imidacloprid on the arthropod community in Neotropical soybean fields through food web analysis. The results showed that imidacloprid seed treatments significantly affected arthropod species richness and abundance, but the effect was secondary to cultivation season.
JOURNAL OF PEST SCIENCE
(2023)
Article
Entomology
Leonardo M. Turchen, Lirio Cosme Jr, Jayne E. Yack, Raul Narciso C. Guedes
Summary: This study characterized the vibratory landscape of the fall armyworm caterpillar and examined their response to abiotic and biotic vibrations. The findings suggest that the caterpillars can perceive and respond to both types of vibrations, with a stronger response to abiotic stimuli.
JOURNAL OF PEST SCIENCE
(2023)
Article
Agronomy
Oscar F. Santos-Amaya, Clebson S. Tavares, Joao Victor C. Rodrigues, Eugenio E. Oliveira, Raul Narciso C. Guedes, Eliseu Jose G. Pereira
Summary: The study examined the fitness costs of resistance to transgenic Cry1A.105+Cry2Ab2 Bacillus thuringiensis (Bt) maize in the globally invasive pest species, fall armyworm. The resistance alleles led to a significant reduction in insect fitness on most of the host crops studied, with developmental time being the key factor influencing fitness. The study suggests that fall armyworm resistance to Cry1A.105+Cry2Ab2-expressing Bt maize comes with strong fitness costs, which were magnified on less-suitable host plants for the insects.
Review
Ecology
Rodrigo Cupertino Bernardes, Lorena Lisbetd Botina, Renan dos Santos Araujo, Raul Narciso Carvalho Guedes, Gustavo Ferreira Martins, Maria Augusta Pereira Lima
Summary: The lack of consensus on pollinator decline has led to intense debates worldwide. Research suggests that a combination of multiple stressors is the main cause of this decline. The focus on agrochemicals and honey bees may overlook the real risk of anthropogenic stressors on other pollinating insects. Furthermore, there is a lack of published articles exploring the toxicological impact of agrochemicals on bumble bees, solitary bees, and stingless bees.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Plant Sciences
Paolo Salazar-Mendoza, Diego M. Magalhaes, Andre L. Lourencao, Jose Mauricio S. Bento
Summary: Compared to its wild relatives, cultivated tomato has lower levels of constitutive volatiles, reduced morphological and chemical defenses, and increased leaf nutritional quality, which affect its resistance against the specialist herbivore Tuta absoluta. The domestication process has unintentionally compromised certain traits, such as plant defense and nutritional value.
Article
Agriculture, Multidisciplinary
Elio Cesar Guzzo, Jose Djair Vendramim, Osvaldo Marteniuk Barros Correa, Andre Luiz Lourencao
Summary: Mexican bean weevil has become a major pest of common bean worldwide. This study aimed to select a botanical insecticide and evaluate its combined effect with an arcelin-bearing common bean resistant genotype. The results showed that NeemPro was the most effective insecticide and had significant effects when combined with the resistant genotype.
Article
Plant Sciences
Diego M. Magalhaes, Andre L. Lourencao, Jose Mauricio S. Bento
Summary: This study reveals that inoculating plants with plant growth-promoting rhizobacteria (PGPR) increases the number of flowers, enhances floral volatile emission, and significantly influences the foraging behavior of stingless bees.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Agriculture, Multidisciplinary
Vinicius Fernandes Canassa, Fabiana Campos Medeiros, Luiz Felipe Souza Bastos, Rodrigo Donizeti Faria, Thais Lohaine Braga dos Santos, Isabella Rubio Cabral, Andre Luiz Lourencao, Edson Luiz Lopes Baldin
Summary: This study evaluated the biological performance of L. zonatus in different corn genotypes under laboratory conditions and found that certain genotypes significantly affected the survival and mortality rates of the pest.
Article
Environmental Sciences
Raul Narciso C. Guedes, Giovanni Benelli, Evgenios Agathokleous
Summary: Outbreaks are sudden increases in population density of a species, and they are important in both natural and artificial systems. Climate and anthropogenic stressors directly or indirectly affect arthropod populations, and their effects are dose- or intensity-dependent. Sublethal stimulation or hormesis is an important phenomenon, but it has been primarily studied in agricultural settings, neglecting key complexities of biological systems.
CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH
(2022)
Article
Toxicology
Rachel R. Rix, Raul Narciso C. Guedes, G. Christopher Cutler
Summary: Hormesis is a toxicological phenomenon where exposure to low doses of stress stimulates biological response. It is now recognized as a dominant response in toxicology, occurring in various organisms exposed to different types of stress. Recent research shows the occurrence of hormesis in animals exposed to commonly encountered and environmentally relevant contaminants/pollutants, such as metals, industrial chemicals, pesticides, pharmaceuticals, and plastics. Evidence for the underlying mechanisms of hormesis is also presented. Therefore, it is important to consider the effects of low doses and hormesis when studying the consequences of environmental contamination/pollution.
CURRENT OPINION IN TOXICOLOGY
(2022)
Article
Toxicology
Raul Narciso C. Guedes, Rachel R. Rix, G. Christopher Cutler
Summary: Misconceptions about the importance of pesticide-induced hormesis in arthropods have delayed its recognition. Historically, the focus on lethal effects in experiments overshadowed the consideration of sublethal effects. However, there has been a shift in this trend with the recognition of the significance of pesticide-induced hormesis. This review highlights the potential impacts of hormesis on species interactions and community dynamics, providing a broader understanding beyond its immediate implications for agriculture.
CURRENT OPINION IN TOXICOLOGY
(2022)
Review
Entomology
Leonardo M. Turchen, Lirio Cosme, Jayne E. Yack, Raul Narciso C. Guedes
Summary: This study reviewed literature on insect biotremology over the past 75 years, revealing biases and knowledge gaps in the research. Further investigations are needed to explore the role of vibratory sensing and communication in juveniles, adaptive roles of vibrations in a broader range of taxa, characterization of vibratory landscapes, and research on sensory receptors.
ENTOMOLOGIA GENERALIS
(2022)
