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	Provedor de dados 44 (1) 49 (1) 82 (1) 86 (1) Autor Bahadoorsingh,Reetu (1) Blackmer,Jacquelyn L. (1) De Moraes,Consuelo M. (1) Diniz,Ivone Rezende (1) Eiras,Alvaro E. (1) Khan,Ayub (1) Laumann,Raúl Alberto (1) Lewis,W. J. (1) Rodovalho,Sheila Rodrigues (1) Souza,Claudio L. M. de (1) Tumlinson,James H. (1) Mais... Palavra-chave Tritrophic interactions (4) Insecta (2) Cerrado host plant (1) Density dependent parasitism (1) Fruit size (1) Host location (1) Leaf shelter caterpillars (1) Parasitoid-host interaction (1) Parasitoids (1) Plant chemicals (1) Plant-insect interactions (1) Tomato (1) Tomato fruit borer (1) Trichomes (1) Tropical Lepidoptera (1) Volatile compounds (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2007 (1) 2006 (1) 2001 (1) 2000 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Examining plant-parasitoid interactions in tritrophic systems 44 De Moraes,Consuelo M.; Lewis,W. J.; Tumlinson,James H.. The demonstration that parasitoids are attracted to volatile compounds released by plants in response to herbivore feeding has generated a great deal of interest over the past ten years. The release of volatile signals by plants occurs not only in response to tissue damage but is also specifically initiated by exposure to herbivore salivary secretions. Although some volatile compounds are stored in plant tissues and immediately released when damage occurs, others are induced by herbivore feeding and released not only from damaged tissue but also from undamaged leaves. Thus, damage localized to only a few leaves results in a systemic response and the release of volatiles from the entire plant. New evidence suggests that, in addition to being highly... Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Tritrophic interactions; Parasitoids; Plant chemicals; Host location. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000200001 Ecological aspects of lepidopteran caterpillar parasitoids from Caryocar brasiliense Camb. (Caryocaraceae) in a cerrado sensu stricto of Central Brazil 49 Rodovalho,Sheila Rodrigues; Laumann,Raúl Alberto; Diniz,Ivone Rezende. This study quantified parasitoid occurrence on five lepidopteran caterpillars species that use Caryocar brasiliense as host plant, trying to verify if there was a direct relationship between host abundance and the proportion of parasitism; if leaf shelters served as cues or protection from parasitoids; if host size influenced the proportion of parasitism, and if attacks by Diptera were more frequent than by Hymenoptera. Searches for external folivorous caterpillars were carried out in an area of cerrado sensu stricto, from July/2003 to June/2004. Caterpillars were more parasitized when occurred on mature leaves. Nola sp. (Noctuiidae) had the highest proportion of parasitism and a negative correlation between their body size and parasitoid attack.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado host plant; Density dependent parasitism; Leaf shelter caterpillars; Plant-insect interactions; Tritrophic interactions; Tropical Lepidoptera. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000300026 Oviposition preference of Neoleucinodes elegantalis (Guenée) (Lepidoptera: Crambidae) and rates of parasitism by Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on Lycopersicon esculentum in São José de Ubá, RJ, Brazil 82 Blackmer,Jacquelyn L.; Eiras,Alvaro E.; Souza,Claudio L. M. de. Neoleucinodes elegantalis (Guenée) is one of the most important pests in several tomato growing regions of Brazil. The neonate larva enters the fruit shortly after eclosion, a characteristic that limits the effectiveness of insecticides and biological control agents. A better understanding of the cues that elicit or inhibit host-plant location and oviposition by N. elegantalis could lead to novel control strategies. Our findings indicate that N. elegantalis deposited 89% of its eggs on small fruits (23.1±0.95 mm), and that 76% of the eggs were placed on the first four basal fruits within the fruit cluster. The average number of eggs/egg mass was 2.9±0.17 (range 1-13), and approximately 70% of these were deposited in a single oviposition bout. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Tomato; Tomato fruit borer; Tritrophic interactions; Fruit size; Trichomes. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000100014 Olfactory mediated interactions between Citrus aurantium Toxoptera citricida and Lysiphlebus testaceipes 86 Bahadoorsingh,Reetu; Khan,Ayub. The objective of this study was to establish whether there are olfactory interactions in the Lysiphlebus testaceipes Toxoptera citricida and Citrus aurantium tritrophic system. The response of male and female L. testaceipes to different odour sources of the host plant C. aurantium, the aphid host T. citricida and aphid-plant complex were investigated using a Y-tube olfactometer. Laboratory experiments were conducted by exposing individually aged male and female L. testaceipes to eight different odour treatments. Response of the parasitoids was taken after 15 min exposure to the volatiles from the different odour sources and based on their orientation to the particular chamber. Seventy percent of both male and female L. testaceipes showed high attractivity... Tipo: Info:eu-repo/semantics/article Palavras-chave: Volatile compounds; Parasitoid-host interaction; Tritrophic interactions. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006001100003 Registros recuperados: 4 Primeira ... 1 ... Última

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