DISTRIBUTION AND ABUNDANCE OF 2 GALL-MAKERS ON THE EUPHORBIACEOUS SHRUB COLLIGUAJA-ODORIFERA

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dc.contributor.authorMARTINEZ, E
dc.contributor.authorMONTENEGRO, G
dc.contributor.authorELGUETA, M
dc.date.accessioned2025-01-23T19:22:17Z
dc.date.available2025-01-23T19:22:17Z
dc.date.issued1992
dc.description.abstractPrevious studies on the interaction between the two inflorescence gall-maker insects of the euphorbiaceous shrub Colliguaja odorifera postulated a parasitoid relationship, while effects on shrub reproduction were not addressed.
dc.description.abstractIn this study, we show a significant (P < 0.001) segregation of the insect attack on two different shrub organs, with a low incidence of co-occurrence (2.3%). Exurus colliguayae (Eulophidae, Hymenoptera) attacks mainly aments at bud stage, and Torymus laetus (Torymidae, Hymenoptera) attacks mainly vegetative buds. It is shown that both insects attack the plant directly and that they are not hyperparasites. The infection on aments induces 100% inhibition of the female function, this, in addition to a quantitatively important natural inhibition of female flower production. The infection on vegetative buds inhibits stem development, then affecting future production of new stems and fruits.
dc.description.abstractThe intensity of attack is randomly distributed within each canopy (variance/mean index ca. 1.0), but it is aggregated between shrubs (variance/mean index > 5,5). Both, the partial infection of shrub aments, and the apparent inhibition of the female function only, make this plant-insect interaction to result in a partial shrub castration. Probably, this partial effect allowed between years 1987 and 1988 a high persistence (100%) and high prevalence (76%) of the infection, compared to other parasitic interactions where resultant castration is total.
dc.fuente.origenWOS
dc.identifier.issn0716-078X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/99007
dc.identifier.wosidWOS:A1992JR37000005
dc.issue.numero1
dc.language.isoen
dc.pagina.final82
dc.pagina.inicio75
dc.revistaRevista chilena de historia natural
dc.rightsacceso restringido
dc.subjectCHALCIDOID-INSECTS
dc.subjectHERBIVORY
dc.subjectPLANT-CASTRATION
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.ods02 Zero Hunger
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa02 Hambre cero
dc.titleDISTRIBUTION AND ABUNDANCE OF 2 GALL-MAKERS ON THE EUPHORBIACEOUS SHRUB COLLIGUAJA-ODORIFERA
dc.typeartículo
dc.volumen65
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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