A5069268889- Insect Resistance and Genetics
- Insect-Plant Interactions and Control
- Insect Pest Control Strategies
- Insect and Pesticide Research
- Soil Management and Crop Yield
- Genetically Modified Organisms Research
- Banana Cultivation and Research
- Growth and nutrition in plants
- Entomopathogenic Microorganisms in Pest Control
- Insect behavior and control techniques
- Genetics and Plant Breeding
- Agricultural and Food Sciences
- Agricultural pest management studies
- Hemiptera Insect Studies
- Crop Yield and Soil Fertility
- Weed Control and Herbicide Applications
- Rural Development and Agriculture
- CRISPR and Genetic Engineering
- Mycotoxins in Agriculture and Food
- Seed Germination and Physiology
- Insect Utilization and Effects
- Silicon Effects in Agriculture
- Bioenergy crop production and management
- Wheat and Barley Genetics and Pathology
- Mosquito-borne diseases and control
Brazilian Agricultural Research Corporation
2016-2025
Centro Universitário de Sete Lagoas
2013-2017
Universidade Federal do Ceará
2013
Universidade Federal de Lavras
1997-2006
Instituto Florestal
2002
Abstract Agriculture represents one of the major strengths economic sector in Brazil. The need to avoid losses because insect pest populations is greatest challenges faced by this sector. Insect pests have caused annual US $12.0 billion Brazilian economy, which approximately $1.6 are exotic species. Furthermore, species often show greater potential cause harm than native In Brazil, since late nineteenth century, 24 been introduced into country, and they significant losses. Many these...
Fumonisins and zearalenone are mycotoxins produced by Fusarium spp. that commonly contaminate maize its derivative products. Recent reports have shown fumonisin B2 B4 might also be Aspergillus niger Tolypocladum species, although their prevalence in is for sure connected to species. The aim of this study was evaluate the occurrence fumonisins maize, stored 10 family farms located State Minas Gerais, Brazil. Samples were collected four periods, at intervals two months, totalling 40 samples....
Exposure to Bacillus thuringiensis (Bt) toxins in low- and moderate-dose transgenic crops may induce sublethal effects increase the rate of Bt resistance evolution, potentially compromising control efficacy against target pests. We tested this hypothesis using fall armyworm Spodoptera frugiperda, a major polyphagous lepidopteran pest relatively tolerant notorious for evolving field-relevant single-gene maize. Late-instar larvae were collected from Cry1Ab non-Bt maize fields five locations...
Abstract Transgenic maize ( Z ea mays L ., P oaceae) event TC 1507, producing the Cry1F protein of B acillus thuringiensis erliner, has been used for management fall armyworm, S podoptera frugiperda JE mith) epidoptera: N octuidae), in razil since 2009. A strain . , obtained from field collections larvae 1507 Minas Gerais state 2010, was selected laboratory resistance to using leaves two selection regimes. Continuous exposure more effective than 6, 8, and 10 days resistant individuals. With...
Abstract Multigenerational effects on biological aspects and the life table of Rhopalosiphum padi (Linnaeus) (Hemiptera: Aphididae) Sipha flava (Forbes) are not known. These studies can help further our understanding reasons for conflicting results performance aphids determined under laboratory conditions. Hence, objective present work was to evaluate R. in brachiaria ( Urochloa ruziziensis (R.Germ. & C.M.Evrard) Crins Poaceae) S. elephant grass Pennisetum purpureum Schumach. during five...
ABSTRACT The occurrence of African planthopper Leptodelphax maculigera (Stål 1859) (Hemiptera: Delphacidae) was first reported in Brazil the Central-West region, Goiás state, Brazil, 2023. However, it is important to analyze its dispersion country, frequency and sites emergence maize crop environments. This study reports co-occurrence L. Dalbulus maidis Minas Gerais state their frequencies agroecosystem, including weed community. In addition, presence parasitized individuals, suggesting...
O objetivo deste trabalho foi avaliar parâmetros biológicos da lagarta-do-cartucho do milho (Spodoptera frugiperda), alimentada com híbridos de Bt, que expressam a toxina Cry 1A(b), e seus respectivos isogênicos não Bt. Os experimentos foram realizados no laboratório Embrapa Milho Sorgo, em Sete Lagoas, MG. avaliados foram: sobrevivência larvas após 48 horas, fase larval pré-imaginal, biomassa aos 14 dias idade, pupas, período desenvolvimento larval, preferência alimentar primeiro ínstar....
A principal praga-alvo na cultura do milho é a lagarta-do-cartucho, Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae), que, pela sua ampla distribuição temporal e geográfica constitui-se em uma das espécies mais nocivas nas regiões tropicais Américas. O objetivo foi avaliar o estádio de adaptação S. 17 hospedeiras, cultivadas ou selvagens, comuns no agroecossistema brasileiro. As plantas foram cinco épocas, entre 2006 2008, utilizando como padrão. Larvas recém-eclodidas...
Generalist predators are capable of consuming different types prey, and as each prey may have distinct nutritional values, a impact on the biology predator. Therefore, aim this study was to determine how consumption influences certain biological characteristics predatory capacity Orius insidiosus (Say). The investigation performed in climatic chamber at 25 ±1 ºC, RH 70 ± 10% fotophase 12. Eggs Anagasta kuehniella (Zeller), adults Caliothrips phaseoli (Hood) nymphs Aphis gossypii Glover were...
The cultivation of genetically modified crops in Brazil has led to the need assess impacts this technology on non-target species. Under field conditions, potential effect insect biodiversity was evaluated by comparing a homogeneous corn with conventional and transgenic maize, expressing different Bt proteins seven counties Minas Gerais, Brazil. richness pattern species, secondary pests natural enemies were observed. results do not support hypothesis that protein affects biodiversity....
The objective of this work was to evaluate the biological variables Spodoptera frugiperda on species cover crops.The experiments were conducted in laboratory and greenhouse using following species: sunflower (Helianthus annuus), sun hemp (Crotalaria juncea), brachiaria (Urochloa decumbens e Urochloa ruziziensis), millet (Pennisetum americanum), black oat (Avena stringosa), white lupin (Lupinus albus), forage turnip (Rafanus sativus) maize (Zea mays).In S. larval survival varied from 57%, L....
The persistence and high dispersal of weeds during the off-season can favor survival pests diseases that threaten cultivated crops in Brazil. fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is one principal polyphagous takes advantage no-tillage system. Despite its pest status, little known about S. development alternative hosts, including those resistant to glyphosate. purpose this study was investigate, laboratory greenhouse conditions, adaptive capacity...
A biologia do percevejo predador Orius insidiosus (Say), utilizando como alimento, adultos de Caliothrips phaseoli (Hood), foi estudada em câmara climática com temperatura 25±1°C, 70±10 % UR e 12h fotofase. O período desenvolvimento ninfal 10,2 dias, não apresentando diferença significativa para machos fêmeas. duração estágio 1,9, 1,7, 1,4, 1,8 3,1 dias o 1º, 2º, 3º, 4º 5º ínstares, respectivamente. viabilidade 69,0%, sendo que a maior mortalidade ocorreu no 2º ínstar (16,0%). O. predou 73,7...
The intergenerational transfer of plant defense compounds by aposematic insects is well documented, and since 2006, has been shown for Cry toxins. toxins are proteins naturally produced the soil bacterium Bacillus thuringiensis (Bt) its genes have expressed in plants to confer insect pest resistance. In this work we tested if non-aposematic larvae a major maize pest, Spodoptera frugiperda, with resistance Cry1F, could Cry1F from genetically engineered variety their offspring. Resistant...
The objective of this study was to compare growth and development Helicoverpa zea Boddie armigera Hübner (Lepidoptera: Noctuidae) larvae that were feeding on an artificial diet. Neonate H. collected in maize fields cultivated at the Brazilian Agricultural Research Corporation, Embrapa Maize & Sorghum, Sete Lagoas (Minas Gerais) farmers' cotton Luís Eduardo Magalhães (Bahia), respectively. Bioassays conducted laboratory using individual 50 mL plastic cups fed a white bean—based diet...
Abstract Doru luteipes (Scudder, 1876) is an omnivorous predator that finds different food resources in the corn plant: eggs of Spodoptera frugiperda (J.E. Smith, 1797), uredospores Puccinia polysora (Underw, 1897), and pollen. Knowing survival preferences this essential to define its relevance as a biological control agent. We hypothesize foraging behavior predatory capacity D. may be affected when several resources, especially S. frugiperda, P. polysora, pollen are concurrently same plant....
Abstract Understanding the ecological and toxicological relationship between genetically modified cultivars (GM) biological control agents is of great importance for discussions related to compatability GM integrated management strategies pest resistance. The present study evaluated search behavior predatory capacity Orius insidiosus (Say) (Hemiptera: Anthocoridae) Doru luteipes (Scudder) (Dermaptera: Forficulidae) on eggs caterpillars Spodoptera frugiperda (J. E. Smith) (Lepidoptera:...
Resumo: O objetivo deste trabalho foi avaliar a eficiência da aplicação foliar de fungicidas na redução incidência patógenos fúngicos, grãos ardidos e fumonisinas totais em milho (Zea mays). Foram conduzidos três ensaios: um no município Luís Eduardo Magalhães, Bahia, dois Sete Lagoas, Minas Gerais, nas safras 2010/2011 2011/2012, com cultivo diferentes híbridos comerciais. Os seguintes foram aplicados zero, uma duas vezes: picoxistrobina + ciproconazol, piraclostrobina epoxiconazole,...
The effect of silicon (Si) on fitness and leaf consumption the fall armyworm (FAW), Spodoptera frugiperda (Smith), has been observed in laboratory, but effects Si damage or defoliation reduction have not yet determined under field conditions. Here, we evaluated amendment soil with by FAW crop yield maize. Two experiments were carried out, four doses a control (no amendment). Experiment #1 150, 300, 450, 600 kg total Si·ha-1, natural manual infestation eggs, while #2 tested 600, 800, 1,000...
The genus Orius Wolff, 1811 comprises predatory species, with approximately 70 known species. Informations about the in Brazil are scarce. Therefore, aim of this investigation was to identify species present four localities southeastern Brazil. Samples were taken from several plants, and material screened laboratory. genitalia both sexes studied illustrated. Two identified, insidiosus (Say, 1832) thyestes Herring, 1966. O. insidiosus, most common collected all sampled [Lavras (MG), Holambra,...
The properties of maize pollen in the diet Doru luteipes were determined by biological responses predator feeding on natural preys and artificial diet. parameters D. fed Spodoptera frugiperda (Smith, 1797) eggs, pollen, Rhopalosiphum maidis (Fitch, 1856) + R. assessed. effect variables nymphs adults also evaluated. Time span nymphal development was greater for exclusively earwigs, with lowest rate nymph survival. However, plus earwigs provided predator´s highest survival rate, whilst...