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	Provedor de dados Neotropical Entomology (3) Autor Oliveira,Maria R.V. de (3) Amancio,Everton (1) Bezerra,Mary-Ann S. (1) Faria,Marcos (1) Gomes,Liziane de O. (1) Laumann,Raúl A. (1) Vasconcelos,Simão D. (1) Vicentini,Sérgio (1) Mais... Palavra-chave Whitefly (2) Biological control (1) Caatinga (1) Entomopathogenic fungus (1) Host preference (1) Hyperparasitoid (1) Insecta (1) Parasitoid (1) Predator (1) Silverleaf whitefly (1) Weeds (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2004 (1) 2003 (1) 2001 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Screening of Beauveria bassiana (Deuteromycotina: Hyphomycetes) isolates against nymphs of Bemisia tabaci (Genn.) biotype B (Hemiptera: Aleyrodidae) with description of a new bioassay method Neotropical Entomology Vicentini,Sérgio; Faria,Marcos; Oliveira,Maria R.V. de. A bioassay method that uses melon leaves as substrate for eggs and nymphs of the biotype B of Bemisia tabaci (Genn.) was established. Root formation of petioles immersed in tap water guaranteed the turgidity and normal coloration of leaves for a period of 20 to 25 days, enabling the execution of tests with entomopathogenic fungi. The virulence of 50 isolates of Beauveria bassiana (Balsamo) Vuillemin was assessed, as an initial action of a research project that aims the development of a bioinsecticide for controlling Bemisia tabaci nymphs in melon crops. Melon leaves were infested with 18 couples of biotype B adults for 26 hours. First-instar nymphs were selected through microscopic observation approximately 4-5 days after adults removal. Application of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Silverleaf whitefly; Biological control; Entomopathogenic fungus. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000100015 Natural enemies of Bemisia tabaci (Gennadius) B biotype and Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) in Brasília, Brazil Neotropical Entomology Oliveira,Maria R.V. de; Amancio,Everton; Laumann,Raúl A.; Gomes,Liziane de O.. A survey was conducted in Brasília, DF, from January 1999 to March 2001, on tobacco, cotton, tomato, cabbage, soybean, bean, melon, eggplant and the weed Emilia sonchifolia DC, to collect natural enemies of the whiteflies Bemisia tabaci (Gennadius) and Trialeurodes vaporariorum (Westwood). Fourteen predators, twelve parasitoids and two hyperparasitoids were collected. Among the parasitoids, Encarsia inaron (Walker) is recorded for the first time in South America, and E. basicincta Gahan is a new record for Brazil. E. aleurothrixi Evans & Polaszek is recorded for the first time parasitizing B. tabaci. The lady beetles Nephaspis hydra Gordon and Delphastus davidsoni Gordon are registered for the first time preying on B. tabaci. Tipo: Info:eu-repo/semantics/article Palavras-chave: Whitefly; Parasitoid; Predator; Hyperparasitoid. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100023 Does the presence of weeds affect Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) infestation on tomato plants in a semi-arid agro-ecosystem? Neotropical Entomology Bezerra,Mary-Ann S.; Oliveira,Maria R.V. de; Vasconcelos,Simão D.. Integrated Bemisia tabaci (Gennadius) management requires quantitative knowledge on the mechanisms of persistence of pest populations in non-commercial host plants. We investigated B. tabaci oviposition preference among tomato and four weed species, and the insect population fluctuation under field conditions in the semi-arid region. At weekly intervals, we determined the level (number of eggs and nymphs per leaf) and the density of infestation (number of eggs and nymphs per leaf area) in all species. We observed an oviposition preference gradient among the species, with different degrees of attractiveness; Acanthospermum hispidum was the most infested species whereas Amaranthus deflexus was the least infested one. We also detected a significantly higher... Tipo: Info:eu-repo/semantics/article Palavras-chave: Whitefly; Weeds; Host preference; Caatinga. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000600015 Registros recuperados: 3 Primeira ... 1 ... Última

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