Consulta: subjectFacets:"Plant defence"
Registros recuperados: 3
Data/hora: 01/06/2024 11:31:45

Interactions mediated by predators in arthropod food webs
Provedor de dados: Neotropical Entomology
Autores: Venzon,Madelaine; Pallini,Angelo; Janssen,Arne.
Studies on interactions among plants, herbivores and natural enemies are important for understanding population dynamics of species in food webs, but they are also important for the practice of pest control with natural enemies. Biological control programs heavily rely on the occurrence of trophic cascades, where the addition of one natural enemy causes a decrease of pest densities and an increase of plant biomass. However, when more that one natural enemy is used to control various pests in the same system, artificial food webs are created and simple tritrophic interactions change to more complicated ones. The occurrence of complex interactions and omnivory in these food webs may modify the sign and the strength of direct effects of natural enemies on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant defence; Odour; Attraction; Antipredator behavior; Intraguild predation; Biological control.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000100002

The third trophic level of plant defence: neotropical social wasps' use of odours of freshly damaged leaves when hunting
Provedor de dados: Zoologia
Autores: Raw,Anthony.
An important aspect of the hunting strategy of neotropical social wasps (Hymenoptera: Vespidae) is where they hunt. Three species used two behavioural components in their selection of a place to search for prey. The wasps uti lizcd the odour of freshly damaged leaves as cues (which could be synomones) to select which leaves to inspect and also they remembered a place to which they were strongly attracted to hunt recently and returned there. Polybia ignobilis (Haliday, 1836) and Polistes satan Bequaert, 1940 hunted on a lawn of Digitaria diversinervis Stapf immediately after it was mown in significantly larger numbers than at other times. P. ignobilis and Polistes versicolor (Olivier, 1791) hunted in significantly greater numbers on freshly cut leaves of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polybia; Polistes; Wasps; Plant defence; Neotropics.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000400025

Potential and restrictions of Poincianella pyramidalis (Tul.) L. P. Queiroz as native forage in the Brazilian semi-arid region
Provedor de dados: Acta Scientiarum: Animal Sciences
Autores: França, Andrezza Araújo de; Silva, Divan Soares da; Fechine, Josean Tavares; Sousa, Francinilda Alves de; Andrade, Alberício Pereira de; Lichston, Juliana Espada.
Poincianella pyramidalis (catingueira) is a endemic plant of the Caatinga, selected by animals grazing on native pasture. With the aim of evaluating characteristics indicative of its nutritional quality, 10 plants were selected and identified, sampled at five different ages, were used to determine dry matter (DM), crude protein (CP), neutral detergent fibre (NDF), mineral matter (MM), DM degradability (Deg DM), NDF degradability (Deg NDF) and in situ and in vitro leaf-tissue degradability. Phytochemical prospection was performed, and 1H and 13C nuclear magnetic resonance applied to detect the presence of secondary compounds. The data were submitted to analysis of variance and Tukey’s test at 5%, and correlation analysis was carried out on the variables for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Degradability; Native forage; Nutrients; Plant defence; Tannins.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47460