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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Infestação e parasitismo natural de ninfas de Bemisia tabaci biótipo b (Hemiptera: Aleyrodidae) em soja-hortaliça e elaboração de chave de identificação de Encarsia spp. (Hymenoptera: Aphelinidae)

Pessoa, Roseli [UNESP] 08 December 2009 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:25:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-12-08Bitstream added on 2014-06-13T19:11:55Z : No. of bitstreams: 1 pessoa_r_me_jabo.pdf: 7575464 bytes, checksum: bfd8798495b474e388b7b64cc038a277 (MD5) / Universidade Estadual Paulista (UNESP) / A soja-hortaliça ou edamame é de linhagem da soja comum Glycine max (L.) Merril, com sabor mais suave ao paladar humano, pode ser consumida “in natura” quando os grãos ainda estão verdes. O objetivo desta pesquisa foi avaliar a infestação de ovos e ninfas Bemisia tabaci (Genn) biótipo B, e o parasitismo natural de ninfas por Encarsia spp. nos genótipos de soja-hortaliça JLM-003, JLM-004, JLM-010, JLM-018, JLM-019, JLM-020, JLM-024, JLM-030, BRS-36 e BRS-155 e elaborar chave de identificação para espécies de Encarsia que ocorrem na cultura da soja-hortaliça. O experimento foi conduzido na FCAV/UNESP- Câmpus de Jaboticabal-SP, na área experimental do Departamento de Produção Vegetal Setor de Olericultura e Plantas Aromático-Medicinais, O delineamento experimental foi em Blocos Casualizados, com 10 tratamentos (genótipos) e cinco repetições, com parcelas de quatro linhas de plantio com de 5 metros de comprimento no espaçamento de um metro entre linhas. As amostragens da infestação de mosca-branca foram realizadas semanalmente, até a fase de frutificação estádio (R6). Para avaliação foi coletado um folíolo central do terço médio de três plantas ao acaso de cada parcela. Foram contados ovos e as ninfas de moscabranca em todo limbo foliar, assim como as ninfas parasitadas por Encarsia spp. Nas avaliações dos principais genótipos com potencial de mercado para soja-hortaliça, conclui-se que os genótipos JLM-030 e JLM-010 apresentaram menor infestação pela mosca-branca e maiores índices de porcentagem de ninfas parasitadas por Encarsia spp. Foram identificadas três espécies Encarsia lutea (Masi), Encarsia nigricephala Dozier e Encarsia porteri (Mercet). Na elaboração da chave de identificação foram utilizadas exemplares machos e fêmeas de Encarsia das espécies acima citadas / The vegetable soybean, called edamame, comes from the common soybean Glycine max (L.) Merril, having a softer taste to the human palate, can be consumed “in natura” when the greens are still fresh. This research aim was evaluate the Bemisia tabaci (Genn) biotype B eggs and nymphs’ infestation and the Encarsia spp. natural nymphs’ parasitism in the JLM-003, JLM-004, JLM-010, JLM-018, JLM-019, JLM- 020, JLM-024, JLM-030, BRS-36, and BRS-155 edamame genotypes, as well elaborate identification keys to Encarsia species that occurs in the edamame. The experiment was carried out at FCAV/UNESP, Jaboticabal Campus, in the experimental area of the Departamento de Produção Vegetal, Setor de Olericultura e Plantas Aromático- Medicinais (Vegetal Production Department, Horticulture and Aromatic-Medicinal Plants Sector). The Experimental design used was the randomized blocks, with 10 treatments (genotypes) and five replications; four-lines planting parcel five meters length and one meter between lines. Whitefly infestation samplings were done weekly, until the R6 stage (fructification phase). To the evaluation, a central leaflet was collected from the thirdmedium of the three plants collected randomly of each parcel. Whitefly eggs and nymphs were counted in all limbo foliar, as well as nymphs parasited by Encarsia spp. The main edamame market-chance genotypes evaluated could be concluded that the genotypes JLM-030 and JLM-010 presented lower whitefly infestation and higher percentage of parasited nymphs by Encarsia spp. Three species were identified: Encarsia lutea (Masi), Encarsia nigricephala Dozier, and Encarsia porteri (Mercet). During the identification key elaboration, Encarsia male and female specimens of the three species above cited were used
2

Infestação e parasitismo natural de ninfas de Bemisia tabaci biótipo b (Hemiptera: Aleyrodidae) em soja-hortaliça e elaboração de chave de identificação de Encarsia spp. (Hymenoptera: Aphelinidae) /

Pessoa, Roseli. January 2009 (has links)
Orientadora: Nilza Maria Martinelli / Banca: Arlindo Leal Boiça Junior / Banca: Valmir Antonio Costa / Resumo: A soja-hortaliça ou edamame é de linhagem da soja comum Glycine max (L.) Merril, com sabor mais suave ao paladar humano, pode ser consumida "in natura" quando os grãos ainda estão verdes. O objetivo desta pesquisa foi avaliar a infestação de ovos e ninfas Bemisia tabaci (Genn) biótipo B, e o parasitismo natural de ninfas por Encarsia spp. nos genótipos de soja-hortaliça JLM-003, JLM-004, JLM-010, JLM-018, JLM-019, JLM-020, JLM-024, JLM-030, BRS-36 e BRS-155 e elaborar chave de identificação para espécies de Encarsia que ocorrem na cultura da soja-hortaliça. O experimento foi conduzido na FCAV/UNESP- Câmpus de Jaboticabal-SP, na área experimental do Departamento de Produção Vegetal Setor de Olericultura e Plantas Aromático-Medicinais, O delineamento experimental foi em Blocos Casualizados, com 10 tratamentos (genótipos) e cinco repetições, com parcelas de quatro linhas de plantio com de 5 metros de comprimento no espaçamento de um metro entre linhas. As amostragens da infestação de mosca-branca foram realizadas semanalmente, até a fase de frutificação estádio (R6). Para avaliação foi coletado um folíolo central do terço médio de três plantas ao acaso de cada parcela. Foram contados ovos e as ninfas de moscabranca em todo limbo foliar, assim como as ninfas parasitadas por Encarsia spp. Nas avaliações dos principais genótipos com potencial de mercado para soja-hortaliça, conclui-se que os genótipos JLM-030 e JLM-010 apresentaram menor infestação pela mosca-branca e maiores índices de porcentagem de ninfas parasitadas por Encarsia spp. Foram identificadas três espécies Encarsia lutea (Masi), Encarsia nigricephala Dozier e Encarsia porteri (Mercet). Na elaboração da chave de identificação foram utilizadas exemplares machos e fêmeas de Encarsia das espécies acima citadas / Abstract: The vegetable soybean, called edamame, comes from the common soybean Glycine max (L.) Merril, having a softer taste to the human palate, can be consumed "in natura" when the greens are still fresh. This research aim was evaluate the Bemisia tabaci (Genn) biotype B eggs and nymphs' infestation and the Encarsia spp. natural nymphs' parasitism in the JLM-003, JLM-004, JLM-010, JLM-018, JLM-019, JLM- 020, JLM-024, JLM-030, BRS-36, and BRS-155 edamame genotypes, as well elaborate identification keys to Encarsia species that occurs in the edamame. The experiment was carried out at FCAV/UNESP, Jaboticabal Campus, in the experimental area of the Departamento de Produção Vegetal, Setor de Olericultura e Plantas Aromático- Medicinais (Vegetal Production Department, Horticulture and Aromatic-Medicinal Plants Sector). The Experimental design used was the randomized blocks, with 10 treatments (genotypes) and five replications; four-lines planting parcel five meters length and one meter between lines. Whitefly infestation samplings were done weekly, until the R6 stage (fructification phase). To the evaluation, a central leaflet was collected from the thirdmedium of the three plants collected randomly of each parcel. Whitefly eggs and nymphs were counted in all limbo foliar, as well as nymphs parasited by Encarsia spp. The main edamame market-chance genotypes evaluated could be concluded that the genotypes JLM-030 and JLM-010 presented lower whitefly infestation and higher percentage of parasited nymphs by Encarsia spp. Three species were identified: Encarsia lutea (Masi), Encarsia nigricephala Dozier, and Encarsia porteri (Mercet). During the identification key elaboration, Encarsia male and female specimens of the three species above cited were used / Mestre
3

Kompatibilita vybraných druhů entomopatogenních hub s parazitoidem Encarsia formosa / Compatibility of different entomopathogenic fungi with parasitoid Encarsia formosa

ŠTĚPÁNOVÁ, Kristýna January 2007 (has links)
This M.Sc. thesis is aimed to describe level of the compatibility between various strains of several entomopathogenic fungi with parasitoid wasp Encarsia formosa. From many species of entomopathogenic fungi Aschersonia aleyrodis, Beauveria bassiana, B, brongniartii, Lecanicillium lecanii, Metarhizium anisopliae and Paecilomyces fumosoroseus were the species which were tested in experiments. It was found, that A. aleyrodis is very selective, because it infects only unparasitized nymphs of greenhouse whitefly Trialeurodes vaporariorum. All other strains of tested fungi were much less selective, however their efficacy always increased total efficacy when compared with the efficacy of parasitoid alone. It was concluded, that fungi A. aleyrodis, L. lecanii and P. fumosoroseus posse{\crq}s big potential for construction of IPM programs.
4

A Spatially Explicit Individual-Based Model of the Population Dynamics of the greenhouse whitefly (Trialeurodes vaporariorum), Encarsia formosa and tomato powdery mildew (Oidium neolycopersici) in Tomato Crops.

Bustos Rodríguez, Henry Alexander 05 July 2016 (has links)
No description available.
5

Intraguild interactions of the greenhouse whitefly natural enemies, predator Dicyphus hesperus, pathogen Beauveria bassiana and parasitoid Encarsia formosa

Labbé, Roselyne 11 April 2018 (has links)
Les organismes constituant des assemblages d’ennemis naturels des herbivores peuvent interagir de façon variable, influençant ainsi l’efficacité de la lutte biologique. En serriculture, la mouche blanche, Trialeurodes vaporariorum est effectivement contrôlée par une gamme d’ennemis naturels dont le prédateur zoophytophage, Dicyphus hesperus, le champignon entomopathogène Beauveria bassiana et le parasitoïde Encarsia formosa. Cette étude explore les interactions entre ces agents afin d’identifier celles qui sont efficaces. En laboratoire, la capacité discriminatoire du prédateur D. hesperus envers des proies saines, parasitées ou infectées a été étudiée. Le prédateur attaque tant les proies saines que les proies parasitées par E. formosa, mais rejette les proies présentant des symptômes d’infection avancée par B. bassiana. En serre expérimentale, l’impacte de B. bassiana sous sa formule commercialisée de BotaniGard® sur la lutte biologique a été évaluée pendant une saison de production de huit semaines. Une réduction la de prédation des mouches blanches par D. hesperus suggère que ce pathogène interfère avec le prédateur, ce qui pourrait être evité par l’aménagement de refuges dans l’espace et dans le temps pour le prédateur, lors de l’utilisation de B. bassiana. / In Canada, an increasing diversity of natural enemies, which includes generalist predators, is available in the control of greenhouse pests such as the greenhouse whitefly on tomato crops. Successful whitefly suppression is now achieved through the concurrent use of the specialist parasitoid Encarsia formosa, the native zoophytogphagous predatory bug Dicyphus hesperus and products such as biological insecticide BotaniGard®, an entomopathogenic formulation based on the conidia of fungus Beauveria bassiana strain GHA. In this study, experiments conducted in the laboratory and greenhouse evaluated the impact of interactions among these organisms on non-target organisms. In the laboratory, we identified an important decrease in predation of infected whitefly at late infection stages, but not of parasitized whitefly suggesting that D. hesperus may interfere with parasitoid biological control. In the greenhouse, reduced predation of B. bassiana infected whitefly by D. hesperus may be avoided by applying temporal or spatial separation between these two agents.

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