Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Acta Amazonica (1) Rev. Bras. entomol. (1) Autor Vasconcelos,Heraldo Luís de (2) Ferreira,Samira Evangelista (1) Sampaio,Marcus Vinicius (1) Silva de Oliveira,Reinaldo (1) Palavra-chave Aphid (1) Aphididae (1) Aphidiinae (1) Competition mediated by parasitoid (1) Indirect resistance (1) Tipo do documento Info:eu-repo/semantics/article (2) Ano 2018 (1) 1988 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Parasitism rate of Myzus persicae (Sulzer) by Diaeretiella rapae (McIntosh) in the presence of an alternative, resistant host Rev. Bras. entomol. Ferreira,Samira Evangelista; Sampaio,Marcus Vinicius; Silva de Oliveira,Reinaldo; Vasconcelos,Heraldo Luís de. ABSTRACT The aphids Lipaphis pseudobrassicae (Davis) and Myzus persicae (Sulzer) (Hemiptera: Aphididae) are important Brassicaceae pests, occurring worldwide and causing significant damage to crops. Interspecific variations in the resistance to natural enemies can potentially impact the interaction among aphid populations. Here we evaluated the hypothesis of associational resistance by determining if the presence of resistant aphids (L. pseudobrassicae) reduces the rate of parasitism by Diaeretiella rapae (McIntosh) on non-resistant aphids (M. persicae). The experiment was conducted using collard green plants infested with M. persicae and L. pseudobrassicae either resistant or susceptible to D. rapae. The percentage of parasitism by D. rapae was greater on... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aphid; Aphididae; Aphidiinae; Competition mediated by parasitoid; Indirect resistance. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000100013 Distribution of Atta (Hymenoptera - Formicidae) in "terra-firme" rain forest of Central Amazonia: density, species composition and preliminary results on effects of forest fragmentation Acta Amazonica Vasconcelos,Heraldo Luís de. One hundred and fourteen hectares of a "terra-fiirme" rain forest 70 km north of Manaus, Amazonas, Brazil, were surveyed for leaf-cutting ant colonies (Atta spp). One half of this area was in isolated forest fragments (surrounded by pastures or second growth) of two sizes: 1 and 10 ha. The other half was in non-isolated fragments (connected to a large parch of forest) of the same sizes. Only two species occured in this forest: Atta sexdens sexdens L. and A. cepfhalotes L. The first was the most abundant species with a mean density of 0.35 colonies per ha. The mean density of A. cephalotes colonies was 0.03 per ha. The density of colonies was not significantly different between the isolated fragments and the continuous forest. Furthermore, the species... Tipo: Info:eu-repo/semantics/article Ano: 1988 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671988000400309 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco