Host-plant flowering status and the concentration of sugar in phloem sap: Effects on an ant-treehopper interaction

dc.creatorQuental, TB
dc.creatorTrigo, JR
dc.creatorOliveira, PS
dc.date2005
dc.dateMAY 3
dc.date2014-11-15T17:01:13Z
dc.date2015-11-26T16:12:47Z
dc.date2014-11-15T17:01:13Z
dc.date2015-11-26T16:12:47Z
dc.date.accessioned2018-03-28T23:00:46Z
dc.date.available2018-03-28T23:00:46Z
dc.identifierEuropean Journal Of Entomology. Czech Acad Sci, Inst Entomology, v. 102, n. 2, n. 201, n. 208, 2005.
dc.identifier1210-5759
dc.identifierWOS:000229497100012
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/69672
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/69672
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/69672
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1267291
dc.descriptionHost-plant mediation in ant-hemipteran mutualisms requires three conditions. First, hemipteran attractiveness to ants should vary with plant quality. Second, ants should preferentially tend those Hemiptera that produce the most nutritious attractant. Third, increased ant attendance based on a richer food reward should have a significant effect on some measure of hemipteran fitness. A field experiment is used to test these conditions. This is the first study to simultaneously test these three conditions, and the first to test the effect of plant flowering status on the ant-derived benefits for a honeydew-producing hemipteran. It is hypothesized that membracids (Guayaquila xiphias) feeding on plants (Didimopunax vinosum) with flowers ingest phloem sap of higher quality (higher sugar concentration), produce a higher-quality honeydew and, as a result, are attended by more ants and are better protected compared to those on plants without flowers. Total nitrogen content of the phloem sap of plants with or without flowers did not differ significantly, whereas the sugar concentration vas higher in the sap of plants with flowers. Honeydew sugar concentration, honeydew production, and ant tending levels did not Nary significantly with flowering status. Membracid survival increased, and natural enemy abundance decreased when ants were present. Plant flowering status did not affect the ant-derived protection afforded to treehoppers, but plants with flowers accumulated more natural enemies through time than plants without flowers. The results suggest that a trade-off between feeding on a higher-quality food and running increased risk of predation on flowering plants could underlie this ant-hemipteran interaction. Based on the parameters measured in this study it is concluded that host-plant mediation does not occur in the ant-Guayaquila system. The results suggest, however, that the way in which the host-plant could affect ant-Guayaquila interactions is complex and likely to involve other species.
dc.description102
dc.description2
dc.description201
dc.description208
dc.languageen
dc.publisherCzech Acad Sci, Inst Entomology
dc.publisherCeske Budejovice
dc.publisherRepública Checa
dc.relationEuropean Journal Of Entomology
dc.relationEur. J. Entomol.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectant-treehopper association
dc.subjecthoneydew
dc.subjecthost-plant mediation
dc.subjecthost-plant quality
dc.subjectMembracidae
dc.subjectmutualism
dc.subjectphloem sugar
dc.subjecttritrophic interaction
dc.subjectcerrado savanna
dc.subjectTending Ants
dc.subjectAmino-acids
dc.subjectFood Plants
dc.subjectHoneydew
dc.subjectHomoptera
dc.subjectAphids
dc.subjectAttendance
dc.subjectNitrogen
dc.subjectInsect
dc.subjectAssociation
dc.titleHost-plant flowering status and the concentration of sugar in phloem sap: Effects on an ant-treehopper interaction
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución