Heliothis Virescens
Mostrando 25-36 de 81 artigos, teses e dissertações.
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25. Exigências térmicas para o desenvolvimento de Palmistichus elaeisis (Hymenoptera, Eulophidae) em pupas de cinco espécies de lepidópteros
The thermal requirements of Palmistichus elaeisis Delvare & LaSalle, 1993 were determined by rearing this pupal parasitoid in the following lepidopteran hosts: Diatraea saccharalis (Fabricius, 1794) (Crambidae), Anticarsia gemmatalis (Hübner, 1818), Heliothis virescens (Fabricius, 1777), Spodoptera frugiperda (J.E. Smith, 1797) (Noctuidae) and Thyrinteina a
Iheringia. Série Zoologia. Publicado em: 2004-09
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26. Desenvolvimento dos estágios imaturos de Palmistichus elaeisis Delvare & LaSalle (Hymenoptera, Eulophidae) em pupas de Lepidoptera
Palmistichus elaeisis Delvare & LaSalle, 1993 é um endoparasitóide coletado de pupas de Sabulodes sp. (Lepidoptera, Geometridae). Os estágios imaturos deste parasitóide foram estudados em laboratório (25 ± 1ºC; 70 ± 10% UR; fotofase 14 h) em pupas dos seguintes lepidópteros: Diatraea saccharalis (Fabricius, 1794) (Crambidae), Anticarsia gemmatalis H
Revista Brasileira de Entomologia. Publicado em: 2004-03
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27. Biologia do ectoparasitóide Bracon hebetor Say, 1857 (Hymenoptera: Braconidae) em sete espécies de lepidópteros
Bracon hebetor Say, 1857 é um ectoparasitóide larval de várias espécies de piralídeos que atacam grãos armazenados, sendo considerado um agente potencial de controle biológico dessas pragas. Assim, a biologia de B. hebetor foi estudada em condições controladas de temperatura (25 ± 2°C), umidade relativa (60 ± 10%) e fotoperíodo (fotofase de 14 h
Scientia Agricola. Publicado em: 2001-12
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28. Consumo e utilização de alimento por Diatraea saccharalis (Fabr.) (Lepidoptera: Pyralidae), Heliothis virescens (Fabr.) e Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) em duas temperaturas
O objetivo do trabalho foi, através de medidas de consumo e utilização de alimento, determinar, entre 25 e 30ºC, qual a temperatura mais adequada para criação de Spodoptera frugiperda (J.E. Smith), Diatraea saccharalis (Fabr.) e Heliothis virescens (Fabr.) em dieta artificial. Foram estudadas 50 lagartas por espécie, individualizadas em recipientes de
Neotropical Entomology. Publicado em: 2001-03
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29. Capacidade reprodutiva de Trichospilus diatraeae (Hymenoptera: Eulophidae) em pupas de diferentes hospedeiros (Lepidoptera)
Este trabalho teve como objetivo verificar a capacidade reprodutiva do parasitóide Trichospilus diatraeae Cherian & Margabandhu, 1942 (Hym.: Eulophidae) em pupas de quatro hospedeiros lepidópteros: Diatraea saccharalis F. (Pyralidae), Anticarsia gemmatalis Hübner, Spodoptera frugiperda J.E. Smith e Heliothis virescens F. (Noctuidae). Os experimentos foram
Scientia Agricola. Publicado em: 2000-06
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30. Expression of Campoletis sonorensis Virus in the Parasitized Host, Heliothis virescens
Polyadenylated mRNA transcripts of the virus of Campoletis sonorensis were detected in Heliothis virescens host larvae 2 h after the larvae had been parasitized by C. sonorensis females and continued to be present in host larvae through 9 days postparasitization while C. sonorensis developed endoparasitically. cDNAs of viral transcripts present in H. viresce
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31. Identification, Mapping, and In Vitro Translation of Campoletis sonorensis Virus mRNAs from Parasitized Heliothis virescens Larvae
Expression of Campoletis sonorensis virus (CsV) in parasitized Heliothis virescens larvae was investigated by Northern blot analysis of poly(A)+ mRNAs isolated from H. virescens larvae at various times after parasitization by C. sonorensis. At least 12 CsV mRNAs were detected in parasitized H. virescens larvae. Injection of nonparasitized H. virescens larvae
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32. Binding of Bacillus thuringiensis proteins to a laboratory-selected line of Heliothis virescens.
A laboratory-selected colony of Heliothis virescens displaying a 20- to 70-fold level of resistance to Bacillus thuringiensis proteins was evaluated to identify mechanism(s) of resistance. Brush-border membrane vesicles were isolated from larval midgut epithelium from the susceptible and resistant strains of H. virescens. Two B. thuringiensis proteins, CryIA
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33. Central Role of Hemocytes in Autographa californica M Nucleopolyhedrovirus Pathogenesis in Heliothis virescens and Helicoverpa zea
Autographa californica M nucleopolyhedrovirus (AcMNPV) can infect and kill a wide range of larval lepidopteran hosts, but the dosage required to achieve mortal infection varies greatly. Using a reporter gene construct, we identified key differences between AcMNPV pathogenesis in Heliothis virescens and Helicoverpa zea, a fully permissive and a semipermissive
American Society for Microbiology.
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34. Importance of Cry1 δ-Endotoxin Domain II Loops for Binding Specificity in Heliothis virescens (L.)
We constructed a model for Bacillus thuringiensis Cry1 toxin binding to midgut membrane vesicles from Heliothis virescens. Brush border membrane vesicle binding assays were performed with five Cry1 toxins that share homologies in domain II loops. Cry1Ab, Cry1Ac, Cry1Ja, and Cry1Fa competed with 125I-Cry1Aa, evidence that each toxin binds to the Cry1Aa bindin
American Society for Microbiology.
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35. The biochemical basis for l-canavanine tolerance by the tobacco budworm Heliothis virescens (Noctuidae)
The tobacco budworm, Heliothis virescens (Noctuidae), a destructive insect pest, is remarkably resistant to l-canavanine, l-2-amino-4-(guanidinooxy)butyric acid, an arginine antimetabolite that is a potent insecticide for nonadapted species. H. virescens employs a constitutive enzyme of the larval gut, known trivially as canavanine hydrolase (CH), to catalyz
The National Academy of Sciences of the USA.
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36. Broad-spectrum resistance to Bacillus thuringiensis toxins in Heliothis virescens.
Evolution of pest resistance to insecticidal proteins produced by Bacillus thuringiensis (Bt) would decrease our ability to control agricultural pests with genetically engineered crops designed to express genes coding for these proteins. Previous genetic and biochemical analyses of insect strains with resistance to Bt toxins indicate that (i) resistance is r