Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN

The most important insect pests on maize in Spain are the pink stem borer S. nonagrioides (Lefèbvre) and the European corn borer O. nubilalis (Hübner). Parasitoid decree of control on stem borers and other maize pests in Spain is not known. The aim of this research was to evaluate the incidence and...

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Autores: Monetti, Liliana, Ordás Pérez, Amando, Malvar Pintos, Rosa Ana, Cordero Rivera, Adolfo
Tipo de recurso: artículo
Fecha de publicación:2003
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/32956
Acceso en línea:http://hdl.handle.net/10261/32956
Access Level:acceso abierto
Palabra clave:Sesamia nonagrioides
Ostrinia nubilalis
Lydella thompsoni
Parasitoids
Maize
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spelling Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAINMonetti, LilianaOrdás Pérez, AmandoMalvar Pintos, Rosa AnaCordero Rivera, AdolfoSesamia nonagrioidesOstrinia nubilalisLydella thompsoniParasitoidsMaizeThe most important insect pests on maize in Spain are the pink stem borer S. nonagrioides (Lefèbvre) and the European corn borer O. nubilalis (Hübner). Parasitoid decree of control on stem borers and other maize pests in Spain is not known. The aim of this research was to evaluate the incidence and diversity of parasitoids on maize stem borers in the province of Pontevedra (NW Spain). Samplings of hybrid field maize plants (DMB-1570) were taken in four locations, from March 1999 to November 2000. Plants were dissected and stem borer overwintering and non-overwintering larvae were collected in separated plastic boxes. Larvae of Mythimua spp. and Helicoverpa armigera were also collected. Larvae were reared in the insectary and adult parasitoids obtained from them were determined. Diversity of parasitoids was in general very low. The most frequently found species on non-over-wintering larvae was Lydella thompsoni (Herting) (Diptera: Tachinidae). Differences in percentage of parasitism (PP) between O. nubilatis and S. nonagrioides were significant. Lydella thompsoni was also the dominant parasitoid on overwintering larvae. Its PP was higher on O. nubilalis than on S. nonagrioides. The correlation between number of stem borer per plain and percentage of parasitised larvae was not significant, neither for S. nonagrioides nor for O. nubilalis. Shannon-Wiener index as a measure of parasitoid diversity was similar in the different hosts. In conclusion, a very low parasitoid natural control on maize borers, in hybrid corn crops grown at the province of Pontevedra was found. Low numbers of parasitoids and low percentage of parasitism in the studied area make difficult to draw definitive conclusions. Stem borers seem to be protected from parasitoids by several circumstances. specifically the development of their immature stages within refuges (the stalks), but other factors probably would contribute to the situation.This research was supported by Xunta de Galicia (project XUGA 40301 B98)Peer reviewedConsiglio per la ricerca e la sperimentazione in agricoltura (Italia)201120112003info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/32956reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://www.maydica.org/articles/48_133.pdfinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/329562026-05-22T06:33:51Z
dc.title.none.fl_str_mv Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
title Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
spellingShingle Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
Monetti, Liliana
Sesamia nonagrioides
Ostrinia nubilalis
Lydella thompsoni
Parasitoids
Maize
title_short Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
title_full Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
title_fullStr Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
title_full_unstemmed Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
title_sort Parasitoids incidence and diversity on maize stem borers Sesamia nonagrioides Lefebvre and Ostrinia nubilalis Hubner in NW SPAIN
dc.creator.none.fl_str_mv Monetti, Liliana
Ordás Pérez, Amando
Malvar Pintos, Rosa Ana
Cordero Rivera, Adolfo
author Monetti, Liliana
author_facet Monetti, Liliana
Ordás Pérez, Amando
Malvar Pintos, Rosa Ana
Cordero Rivera, Adolfo
author_role author
author2 Ordás Pérez, Amando
Malvar Pintos, Rosa Ana
Cordero Rivera, Adolfo
author2_role author
author
author
dc.subject.none.fl_str_mv Sesamia nonagrioides
Ostrinia nubilalis
Lydella thompsoni
Parasitoids
Maize
topic Sesamia nonagrioides
Ostrinia nubilalis
Lydella thompsoni
Parasitoids
Maize
description The most important insect pests on maize in Spain are the pink stem borer S. nonagrioides (Lefèbvre) and the European corn borer O. nubilalis (Hübner). Parasitoid decree of control on stem borers and other maize pests in Spain is not known. The aim of this research was to evaluate the incidence and diversity of parasitoids on maize stem borers in the province of Pontevedra (NW Spain). Samplings of hybrid field maize plants (DMB-1570) were taken in four locations, from March 1999 to November 2000. Plants were dissected and stem borer overwintering and non-overwintering larvae were collected in separated plastic boxes. Larvae of Mythimua spp. and Helicoverpa armigera were also collected. Larvae were reared in the insectary and adult parasitoids obtained from them were determined. Diversity of parasitoids was in general very low. The most frequently found species on non-over-wintering larvae was Lydella thompsoni (Herting) (Diptera: Tachinidae). Differences in percentage of parasitism (PP) between O. nubilatis and S. nonagrioides were significant. Lydella thompsoni was also the dominant parasitoid on overwintering larvae. Its PP was higher on O. nubilalis than on S. nonagrioides. The correlation between number of stem borer per plain and percentage of parasitised larvae was not significant, neither for S. nonagrioides nor for O. nubilalis. Shannon-Wiener index as a measure of parasitoid diversity was similar in the different hosts. In conclusion, a very low parasitoid natural control on maize borers, in hybrid corn crops grown at the province of Pontevedra was found. Low numbers of parasitoids and low percentage of parasitism in the studied area make difficult to draw definitive conclusions. Stem borers seem to be protected from parasitoids by several circumstances. specifically the development of their immature stages within refuges (the stalks), but other factors probably would contribute to the situation.
publishDate 2003
dc.date.none.fl_str_mv 2003
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/32956
url http://hdl.handle.net/10261/32956
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://www.maydica.org/articles/48_133.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Consiglio per la ricerca e la sperimentazione in agricoltura (Italia)
publisher.none.fl_str_mv Consiglio per la ricerca e la sperimentazione in agricoltura (Italia)
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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