Dagmara Gomes Ramalho

ORCID: 0000-0003-4756-1051
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Insect-Plant Interactions and Control
  • Insect Resistance and Genetics
  • Insect Pest Control Strategies
  • Insect and Pesticide Research
  • Insect behavior and control techniques
  • Silkworms and Sericulture Research
  • Agricultural pest management studies
  • Insect Utilization and Effects
  • Weed Control and Herbicide Applications
  • Entomopathogenic Microorganisms in Pest Control
  • Forest Insect Ecology and Management
  • Plant and animal studies
  • Growth and nutrition in plants
  • Hemiptera Insect Studies
  • Essential Oils and Antimicrobial Activity
  • Soybean genetics and cultivation
  • Agronomic Practices and Intercropping Systems
  • Agriculture and Rural Development Research
  • Insect Pheromone Research and Control
  • Environmental Sustainability and Education
  • Nematode management and characterization studies
  • Research on scale insects
  • Fossil Insects in Amber
  • Hymenoptera taxonomy and phylogeny
  • Phytochemistry Medicinal Plant Applications

Universidade Estadual Paulista (Unesp)
2012-2024

Fundación Universitaria Católica Lumen Gentium
2023

Universidade de São Paulo
2014-2020

Rutgers, The State University of New Jersey
2019

National Council for Scientific and Technological Development
2019

Universidade de Ribeirão Preto
2017

Núcleo de Pesquisas Aplicadas (Brazil)
2015

The invasive spotted-wing drosophila, Drosophila suzukii (Matsumura), is a major pest of soft-skinned fruits. Since its introduction into North America and Europe, significant progress has been made in understanding the volatile cues used by this fly during food, oviposition site, mate finding. Despite progress, commercially available lures are non-selective. Here, we tested two Hanseniaspora uvarum (Niehaus) yeast compounds (isoamyl acetate isobutyl acetate) leaf compound β-cyclocitral...

10.1093/jee/toz224 article EN Journal of Economic Entomology 2019-07-24

Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is a polyphagous pest with wide geographic distribution. This first arrived in Brazil 2013, and since then studies on possible control methods for it have been necessary. A method the of H. using egg parasitoid Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae). Therefore, objective this study was to evaluate performance T. eggs, which are known represent suitable hosts development species laboratory. Parasitism emergence...

10.1038/s41598-018-37797-9 article EN cc-by Scientific Reports 2019-02-04

Plutella xylostella (L.) is susceptible to both the entomopathogen Bacillus thuringiensis and predator, Brazilian spined soldier bug [Podisus nigrispinus (Dallas)]. The objective of this study was measure interaction between bacterium B. predator P. nigrispinus. We also studied behavior in relation its choice thuringiensis-infected healthy xylostellais larvae. In first treatment, nymphs were fed daily with larvae distilled water. second a suspension as source control Adult separated by sex,...

10.1603/en12060 article EN Environmental Entomology 2012-12-01

Although the parasitoid Cotesia flavipes (Cameron) has proven effective in controlling sugarcane borer Diatraea saccharalis (Fabricius) for many years, concern arisen over quality of individuals produced at large scales. The been reared laboratories Brazil more than 40 with no new introductions populations during that period. Since parasitoids was not verified time species' introduction Brazil, we do know if there any reduction so far. However, it is possible to determine whether could...

10.1371/journal.pone.0160898 article EN cc-by PLoS ONE 2016-08-10

The objective of this study was to evaluate the functional response Orius insidiosus preying on third and fourth instars Aphis gossypii nymphs that were reared transgenic NuOPAL (Bollgard I Event 531) conventional Buriti cotton varieties. Fifty O. female bugs aged 12–24h distributed into five different Petri dishes with densities A. (2, 4, 8, 16, 32 per plate) for each variety. number prey consumed evaluated over course 12h, a final assessment at 24h. handling times (Th) attack rates (a)...

10.4025/actasciagron.v36i3.17466 article EN cc-by Acta Scientiarum Agronomy 2014-07-07

The purpose of this study was to investigate the development and reproduction zoophytophagous predator Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) fed kale, broccoli cabbage affects its. Nymphs adults were on larvae Plutella xylostella (L.) (Lepidoptera: Plutellidae) as prey with cabbage, or broccoli. In nymph period, duration consumption similar all Brassicacea cultivar. However, viability higher for predators leaves. mean weight 5th-instar nymphs, newly emerged females sex...

10.1590/1519-6984.16615 article EN cc-by Brazilian Journal of Biology 2017-03-13

Chemical and biological insecticides have been frequently used in sugarcane fields to control insects-pests, including the borer, Diatraea saccharalis. Among products used, those based on chlorantraniliprole Metarhizium anisopliae entomopathogenic fungus, stand out. Euborellia annulipes is an insect of order Dermaptera considered a potential predator borer eggs. This study aimed evaluate direct indirect effects bioinsecticide M. (Metarril®) chemical insecticide (Altacor®) mortality E. nymphs...

10.4236/as.2023.141002 article EN Agricultural Sciences 2023-01-01

Abstract The parasitoid Trichogramma galloi Zucchi (Hymenoptera: Trichogrammatidae) is an effective biocontrol agent of the sugarcane borer, Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae). Its use often recommended in integrated pest management (IPM) programs sugarcane. However, IPM this crop also involves chemical and biological insecticides, little known about effects concomitant these products together with T. . In study, we evaluated insecticide chlorantraniliprole (Altacor...

10.1111/eea.13363 article EN Entomologia Experimentalis et Applicata 2023-08-19

Abstract Xylocoris species (Hemiptera: Anthocoridae) are known to occur in various habitats and attack a diversity of agriculturally important prey. Other groups organisms, such as strains Bacillus thuringiensis Berliner ( Bt ) bacteria, also have been extensively studied applied biological control agents. The use these ‐bioinsecticides association with predators may be good strategy integrated pest management. This work had the objective study predator behaviour, predatory capacity,...

10.1111/eea.12896 article EN Entomologia Experimentalis et Applicata 2020-04-03

The objective of this research was to study the effect previous herbivory in chemical composition soybean leaves, and its influence on Anticarsia gemmatalis (Hueb.) Piezodorus guildinii (West.) development. Two genotypes, ‘Embrapa 4’ ‘BR 37’, were chemically analyzed. caterpillars fed these genotypes leaves bugs string beans, both injured non- (control), totalizing 4 treatments with 50 replications for each treatment. Herbivory performed by releasing 3 rd instar velvetbean caterpillar. taken...

10.14295/cs.v3i3.149 article EN Comunicata Scientiae 2012-09-18

This study reports the observation of Elaphria agrotina (Guenée, 1852) (Lepidoptera, Noctuidae) attacking sugarcane (Saccharum spp.). These specimens were collected in a field under renovation while feeding on bait traps made from stalks. Larvae also detected within soil layers up to 6 cm deep, near crop residues and rhizomes. Notably, they found plants displaying 'dead heart' symptoms. The presence this species stalks raises concerns about potential secondary damage crop, which is already...

10.37486/2675-1305.ec06017 article EN cc-by Entomological Communications 2024-07-16

Some insects are important pests in cotton crops and can cause serious yield losses. Among them we relate Alabama argillacea (cotton leafworm) Aphis gossypii aphid), demanding, often, the use of control measures. This study aimed to evaluate toxicity Bacillus thuringiensis (Dipel®) leafworm analyze its effect on occurrence this pest aphid grown under two system row spacing, places State Mato Grosso, Brazil, as well some natural enemies. The was evaluated using doses 0.30, 0.50, 0.75 1.00...

10.14295/cs.v6i2.156 article EN Comunicata Scientiae 2015-07-08

TED ResumenEn las leyes y documentos oficiales brasileños, se verifica que en términos normativos, los asuntos relacionados con el medio ambiente la educación ambiental han sido bien establecidos.A partir de una discusión sobre concepciones o ideas previas estudiantes un curso Ciencias Biológicas universidad pública brasileña término "Medio Ambiente", describe propuesta didáctica para asignatura Educación Ambiental formación inicial biólogos.El objetivo esta fue abarcar contenidos necesarios...

10.17227/01213814.38ted57.74 article ES cc-by-nc Tecné Episteme y Didaxis TED 2015-05-02

Despite all the benefits that an artificial diet can make to Bombyx mori rearing, as labor savings, greater production efficiency, raising during creating unfavorable conditions, and rearing virtually free of diseases, was not yet developed adequate for larval stages. However , in Japan use diets is highly diffused first second instars silkworm larvae, covering about 50 % productions. The objective this study determine effects offering early on consumption natural metabolism late instar...

10.14295/cs.v6i2.163 article EN Comunicata Scientiae 2015-07-08
Coming Soon ...