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dc.contributor.authorPons i Domènech, Xavier
dc.contributor.authorLumbierres i Bardají, Belén
dc.contributor.authorLópez Alonso, Carmen
dc.contributor.authorAlbajes Garcia, Ramon
dc.date.accessioned2017-02-10T10:48:39Z
dc.date.available2017-02-10T10:48:39Z
dc.date.issued2005
dc.identifier.issn1210-5759
dc.identifier.urihttp://hdl.handle.net/10459.1/59222
dc.description.abstractThe impact of transgenic Bt-maize, expressing the Cry1Ab protein, on aphids, leafhoppers, cutworms and wireworms was evaluated at the farm scale by comparing their abundance on Bt-plots and those sown with the isogenic variety over three consecutive growing seasons. The impact of Bt-maize was different on each of the three-herbivore groups. There were significantly more aphids on the Bt-maize but in terms of aphid species, the difference was only statistically significant for Sitobion avenae and not for the other three most abundant species (Metopolophium dirhodum, Rhopalosiphum padi and Macrosiphum euphorbiae). The analysis of aphid age structure showed consistently more individuals on Bt-plots; differences were significant for alates, apterous adults and young nymphs of R. padi, apterous adults and apterous fourth instar nymphs of S. avenae, alates, apterous adults and apterous fourth instar nymphs of M. dirhodum. Leafhoppers (Zyginidia scutellaris), particularly mature nymphs, were also more abundant on the Btmaize. In spite of this there was no difference in leafhopper damage to Bt and non Bt-maize. The reasons for this are unclear but may be due to changes in Bt-maize that favoured aphids and leafhoppers. Differences in aphid and leafhopper densities were not high enough to affect yield. However, they may have affected the availability of prey for polyphagous predators such as Orius sp. The Btmaize did not affect the incidence of cutworms (Agrotis segetum) or wireworms (Agriotes lineatus). These results indicate that Btmaize does not have a negative impact on the non-target maize biocenosis at the farm scale.ca_ES
dc.description.sponsorshipThis research was funded by the Spanish Government (Ministry of Science and Technology (MCYT)), project number AGF99-0782.ca_ES
dc.language.isoengca_ES
dc.publisherCzech Academy of Sciences. Institute of Entomology of the Biology Centreca_ES
dc.relationMIECU/PN1996-1999/AGF99-0782
dc.relation.isformatofReproducció del document publicat a https://doi.org/ 10.14411/eje.2005.010ca_ES
dc.relation.ispartofEuropean Journal of Entomology, 2005, vol. 102, núm. 1, p. 73-79ca_ES
dc.rightscc-by (c) Czech Academy of Sciences. Institute of Entomology of the Biology Centre, 2005ca_ES
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subjectBt-maizeca_ES
dc.subjectNon-target speciesca_ES
dc.subjectAphidsca_ES
dc.subjectLeafhoppersca_ES
dc.titleAbundance of non-target pests in transgenic Bt-maize: a farm scale studyca_ES
dc.typearticleca_ES
dc.identifier.idgrec005742
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/ 10.14411/eje.2005.010


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cc-by (c) Czech Academy of Sciences. Institute of Entomology of the Biology Centre, 2005
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