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Abstract
Parasitoids locate inconspicuous hosts in a heterogeneous habitat using plant volatiles, some of which are induced by the hosts. Hyposoter horticola Gravenhost (Hymenoptera: Ichneumonidae) is a parasitoid of the Glanville fritillary butterfly Melitaea cinxia L. (Lepidoptera: Nymphalidae). Melitaea cinxia lays eggs in clusters on leaves of Plantago lanceolata L. (Lamiales: Plantaginaceae) and Veronica spicata L. (Lamiales: Plantaginaceae). The parasitoid [ver mas...]
dc.contributor.authorCastelo, Marcela Karina
dc.contributor.authorNouhuys, Saskya van
dc.contributor.authorCorley, Juan Carlos
dc.date.accessioned2019-07-03T13:33:22Z
dc.date.available2019-07-03T13:33:22Z
dc.date.issued2010-01
dc.identifier.issn1536-2442
dc.identifier.otherhttps://doi.org/10.1673/031.010.5301
dc.identifier.urihttps://academic.oup.com/jinsectscience/article/10/1/53/837856
dc.identifier.urihttp://hdl.handle.net/20.500.12123/5426
dc.description.abstractParasitoids locate inconspicuous hosts in a heterogeneous habitat using plant volatiles, some of which are induced by the hosts. Hyposoter horticola Gravenhost (Hymenoptera: Ichneumonidae) is a parasitoid of the Glanville fritillary butterfly Melitaea cinxia L. (Lepidoptera: Nymphalidae). Melitaea cinxia lays eggs in clusters on leaves of Plantago lanceolata L. (Lamiales: Plantaginaceae) and Veronica spicata L. (Lamiales: Plantaginaceae). The parasitoid oviposits into host larvae that have not yet hatched from the egg. Thus, though H. horticola is a parasitoid of Melitaea cinxia larvae, it must find host eggs on plants that have not been fed on by the larvae. Using a Y-tube olfactometer, the response of H. horticola to odors of Melitaea cinxia and extracts of the attacked plant species were tested. Three week-old eggs (near hatching) were attractive to young H. horticola, but one week-old eggs were attractive only to old or experiencedH. horticola. Melitaea cinxia larvae were not attractive. A water extract of P. lanceolata was attractive, but ethanol or hexane extracts were not. None of the extracts of V. spicata were attractive. Leaves of V. spicata were attractive only if harboring eggs, but P. lanceolata leaves with eggs were not. Free flying H. horticola in a large outdoor enclosure were presented with host and plant cues. As in the olfactometer, V. spicata was attractive only when eggs were on it, and P. lanceolata was somewhat attractive with or without eggs. This study shows for the first time that a parasitoid of larvae uses egg volatiles or oviposition-induced plant volatiles, to f0ind host larvae, and that Melitaea cinxia eggs or traces of oviposition induce the production of these volatiles by the plant. Based on the results, and given the natural distribution of the plants and M cinxia eggs, parasitism of Melitaea cinxia eggs on P. lanceolata would be expected to be low. Instead, under natural conditions, a fraction of the eggs in virtually all egg clusters are parasitized on both plant species. The mismatch between the experimental results and the natural pattern of host-parasitoid interactions is discussed in terms of the expected coupling foraging cues with foraging success.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherEntomological Society of Americaes_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceJournal of Insect Science 10 (1) : 53. (2010)es_AR
dc.subjectParasitoideses_AR
dc.subjectParasitoidseng
dc.subjectHyposoteres_AR
dc.subjectControl de Plagases_AR
dc.subjectPest Controleng
dc.subjectHuéspedeses_AR
dc.subjectHostseng
dc.subjectOlfacciónes_AR
dc.subjectOlfactioneng
dc.subject.otherHyposoter horticolaes_AR
dc.subject.otherMelitaea cinxiaes_AR
dc.titleOlfactory attraction of the larval parasitoid, Hyposoter horticola, to plants infested with eggs of the host butterfly, Melitaea cinxiaes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Barilochees_AR
dc.description.filFil: Castelo, Marcela Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentinaes_AR
dc.description.filFil: Nouhuys, Saskya van. University of Helsinski. Department of Biological and Environmental Sciences. Division of Population Biology; Finlandia. Cornell University. Department of Ecology and Evolutionary Biology; Estados Unidoses_AR
dc.description.filFil: Corley, Juan Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Grupo de Ecología de Poblaciones de Insectos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.subtypecientifico


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