The invasive coccinellid <i>Harmonia axyridis</i> (Coleoptera: Coccinellidae) is a less suitable host for parasitism than resident species

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dc.contributor.authorRomero, Violeta
dc.contributor.authorZaviezo, Tania
dc.contributor.authorGrez, Audrey A.
dc.date.accessioned2025-01-23T19:46:14Z
dc.date.available2025-01-23T19:46:14Z
dc.date.issued2020
dc.description.abstractHarmonia axyridis (Pallas) has invaded most continents in the world, including South America. In Chile, it became invasive after 2010, turning into a dominant species in coccinellid guilds in alfalfa crops, where it coexists with the introduced species Hippodamia variegata (Goeze) and the native species Eriopis chilensis Hofmann, the populations of which declined after the invasion of H. axyridis. One of the mechanisms attributed to the success of invasive species is the enemy release hypothesis (ERH), which predicts that natural enemies will have a lesser impact on the invasive species in the newly invaded areas than on resident species. Dinocampus coccinellae (Hymenoptera: Braconidae) is a cosmopolitan parasitoid of coccinellids, which vary in their suitability to parasitism according to species and location. The present study evaluated whether H. axyridis is a less suitable host than H. variegata and E. chilensis for D. coccinellae by assessing each step in the parasitism process, from oviposition to adult emergence in field and laboratory conditions. In the field, successful parasitism in H. axyridis (7%) was significantly lower than in H. variegata (33%) and E. chilensis (36%). H. axyridis was also the only species in which failed parasitoid larval development was greater than successful parasitism (adult emergence). In the laboratory, D. coccinellae never successfully oviposited in H. axyridis, while it did in the other two species. These results suggest that in Chile, H. axyridis is a less suitable host than the resident species for D. coccinellae. This mechanism, among others, may explain the dominance of this species in this early stage of invasion.
dc.fuente.origenWOS
dc.identifier.doi10.7764/ijanr.v47i3.2239
dc.identifier.issn2452-5731
dc.identifier.urihttps://doi.org/10.7764/ijanr.v47i3.2239
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100280
dc.identifier.wosidWOS:000604561900012
dc.issue.numero3
dc.language.isoen
dc.pagina.final323
dc.pagina.inicio312
dc.revistaInternational journal of agriculture and natural resources
dc.rightsacceso restringido
dc.subjectDinocampus coccinellae
dc.subjectEriopis chilensis
dc.subjectHippodamia variegata
dc.subjectladybird beetles
dc.subjectnatural enemies
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.titleThe invasive coccinellid <i>Harmonia axyridis</i> (Coleoptera: Coccinellidae) is a less suitable host for parasitism than resident species
dc.typeartículo
dc.volumen47
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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