Entomopathogenic Nematode
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Response of grey slug to entomopathogenic nematodes
ABSTRACT Biological control using entomopathogenic nematodes (EPNs) is known as an ecofriendly strategy in integrated pest management. The terrestrial slug Parmacella ibera is a major pest of vegetables and citrus trees in north of Iran. The heavy costs and environmental concerns of synthetic molluscicides led the study to use EPNs, against the slug P. ibera
Bragantia. Publicado em: 2020-12
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2. Effects of entomopathogenic nematodes Steinernema carpocapsae and Heterorhabditis bacteriophora on the fitness of a Vip3A resistant subpopulation of Heliothis virescens (Noctuidae: Lepidoptera)
ABSTRACT The widespread use of transgenic plants imposes selection pressure on insect pest populations to develop insecticide resistance. Evaluation of effectiveness of resistance management strategies is very important in resistance management programs. Resistance management to insecticides is widely believed to depend in part on associated fitness costs. F
Bragantia. Publicado em: 2020-06
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3. AvaliaÃÃo de nematÃides entomopatogÃnicos visando o controle da cigarra-do-cafeeiro / Evaluation of entomopathogenic nematodes aiming the control of coffee plant cicadas
Coffee plantation in Brazil is very important, once it is responsible for the greatest production, consumption and exportation of coffee in the world. The species Coffea arabica and C. canephora are predominant and also host some insect-pests of economical importance such as the cicadas. The species Quesada gigas is considered the principal because it presen
Publicado em: 2007
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4. AvaliaÃÃo de nematÃides entomopatogÃnicos (Rhabditida) para o controle da mosca-das-frutas Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) / Evaluation of Entomopathogenic nematodes (Rhabditida) for controling fruit flies Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). Lavras: UFLA, 2007. 63 p. (Dissertion â Master in Agronomy/Entomology). *
A mosca-das-frutas à considerada uma das principais pragas da fruticultura mundial, acarretando perdas significativas para este setor. Este inseto passa uma fase de sua vida no solo, sendo alvo em potencial para nematÃides entomopatogÃnicos. Assim, este trabalho teve como objetivos avaliar a eficiÃncia de diferentes isolados de nematÃides entomopatogÃn
Publicado em: 2007
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5. ESTUDO DA ECOLOGIA DE INFECÇÃO DOS NEMATÓIDES ENTOMOPATOGÊNICOS Heterorhabditis riobravus e Steinernema carpocapsae (RHABDITIDA: HETERORHABDITIDAE, STEINERNEMATIDAE) EM Alphitobius diaperinus (COLEOPTERA: TENEBRIONIDAE)
Aphitobius diaperinus (Panzer), known as cascudinho or "lesser mealworm" colonizes the substrate found at farms, developing itselves in high populations, causing sanitary and economical problems. They affect the health and performance of the birds, being also transmitters of diseases. Their control is based on the application of insecticides, which increase
Publicado em: 2006
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6. Biological and mannering studies of Migdolus fryanus (Westood, 1863) (Coleoptera: vesperidade) and its interaction with entomopathogenic nematodes and other agents of mortalities / Estudos biologicos e comportamentais de Migdolus fryanus (Westwood, 1863) (Coleoptera : vesperidae) e sua interação com nematoides entomopatogenicos, e outros agentes de mortalidade
During de present study biological and morphological data of Migdolus fiyanus (Westwood, 1863) (Coleoptera: V esperidae) were obtained. Males and females after mating were collected in sugar cane field and brought to the laboratory for morphological and biological investigations. Females were individualized in plastic containers ( 20 L). The dimensions were
Publicado em: 2006
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7. Estudos de Bacillus thuringiensis Berliner visando ao controle de Spodoptera frugiperda (J.E.Smith). / Bacillus thuringiensis berliner research applied for the control of Spodoptera frugiperda (J. E. Smith).
From 24 soil samples about 461 bacterial colonies have been isolated, and 190 were identified as Bacillus thuringiensis (Bt). The relation between soil chemical characteristics and the presence of this pathogen may be expressed by the equation iBt = -0,4 + 0,6Ca + 0,07Cu + 0,009Fe - 0,53Mg -0,12Mn + 1,26Zn. Among 83 Bt isolates assayed against Spodoptera fru
Publicado em: 2004
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8. A Phosphopantetheinyl Transferase Homolog Is Essential for Photorhabdus luminescens To Support Growth and Reproduction of the Entomopathogenic Nematode Heterorhabditis bacteriophora
The bacterium Photorhabdus luminescens is a symbiont of the entomopathogenic nematode Heterorhabditis bacteriophora. The nematode requires the bacterium for infection of insect larvae and as a substrate for growth and reproduction. The nematodes do not grow and reproduce in insect hosts or on artificial media in the absence of viable P. luminescens cells. In
American Society for Microbiology.
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9. PCR-Ribotyping of Xenorhabdus and Photorhabdus Isolates from the Caribbean Region in Relation to the Taxonomy and Geographic Distribution of Their Nematode Hosts
The genetic diversity of symbiotic Xenorhabdus and Photorhabdus bacteria associated with entomopathogenic nematodes was examined by a restriction fragment length polymorphism analysis of PCR-amplified 16S rRNA genes (rDNAs). A total of 117 strains were studied, most of which were isolated from the Caribbean basin after an exhaustive soil sampling. The collec
American Society for Microbiology.
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10. For the Insect Pathogen Photorhabdus luminescens, Which End of a Nematode Is Out?
The nematode Heterorhabditis bacteriophora is the vector for transmitting the entomopathogenic bacterium Photorhabdus luminescens between insect larvae. The dauer juvenile (DJ) stage nematode selectively retains P. luminescens in its intestine until it releases the bacteria into the hemocoel of an insect host. We report the results of studying the transmissi
American Society for Microbiology.
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11. Early Colonization Events in the Mutualistic Association between Steinernema carpocapsae Nematodes and Xenorhabdus nematophila Bacteria
The bacterium Xenorhabdus nematophila is a mutualist of the entomopathogenic nematode Steinernema carpocapsae. During its life cycle, the bacterium exists both separately from the nematode and as an intestinal resident of a nonfeeding nematode form, the infective juvenile (IJ). The progression of X. nematophila from an ex vivo existence to a specific and per
American Society for Microbiology.
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12. Phase Variation in Xenorhabdus nematophilus and Photorhabdus luminescens: Differences in Respiratory Activity and Membrane Energization
Phase variation in Xenorhabdus and Photorhabdus spp. has a significant impact on their symbiotic relationship with entomopathogenic nematodes by altering the metabolic by-products upon which the nematodes feed. The preferential retention of the phase I variant by the infective-stage nematode and its better support for nematode reproduction than phase II indi