Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/6068
Full metadata record
DC FieldValueLanguage
dc.contributor.authorBahar, Md Habibullaren
dc.contributor.authorStanley, Johnen
dc.contributor.authorGregg, Peteren
dc.contributor.authordel Socorro, Aliceen
local.source.editorEditor(s): Eric Tielkesen
dc.date.accessioned2010-05-31T09:47:00Z-
dc.date.issued2009-
dc.identifier.citationBiophysical and Socio-economic Frame Conditions for the Sustainable Management of Natural Resources: Proceedings of Tropentag 2009, p. 39-39en
dc.identifier.isbn9783980168670en
dc.identifier.urihttps://hdl.handle.net/1959.11/6068-
dc.description.abstractOver 85% of the Australia cotton crop is transgenic, expressing Bt genes for the control of the key pests 'Helicoverpa armigera' and 'H. punctigera'. Using Bt cotton has reduced the number of pesticide applications, paving the way for a more concerted effort with integrated pest management (IPM), especially enhancing the impacts of natural enemies. There is field evidence that Helicoverpa larvae are surviving on Bt cotton. This study examines the predatory performance of a generalist predator, the green lacewing ('Mallada signata' (Schneider)) feeding on H. armigera eggs and larvae on Bt (Bollgard II ®) or conventional cotton. Prey consumption rates on single leaves were measured under laboratory conditions in small arenas. Prey consumption rates on whole plants of Bt and conventional cotton varieties were investigated in controlled environment cabinets. H. armigera eggs or larvae were distributed evenly across seven plant positions; the stem, petioles, squares, flowers, bolls and upper and lower sides of leaves. Two, four-day-old, lacewing larvae were released and surviving Helicoverpa eggs and larvae recorded after 24 for H. armigera eggs and 72 hours for 'H. armigera' larvae experiments. In the small arenas, lacewing larvae fed on similar numbers of 'H. armigera' eggs (ave. 15) or larvae (ave. 8) whether searching Bt or conventional cotton leaves. Likewise, similar numbers of eggs were consumed by lacewing larvae searching whole plants of either Bt (ave. 15) or conventional (ave. 14) varieties in 24 hours. On whole Bt cotton plants 83% of the 'H. armigera' larvae died. Mortality increased to 98% when the two lacewing larvae were present. Lacewings on conventional cotton consumed 65% of the prey. This 'mopping-up' of surviving Helicoverpa on Bt cotton by lacewing larvae has the potential to reduce immediate pest damage but perhaps more importantly remove potentially Bt-resistant genotypes.en
dc.languageenen
dc.publisherDeutsches Institut f�r tropische und subtropische Landwirtschaft (DITSL)en
dc.relation.ispartofBiophysical and Socio-economic Frame Conditions for the Sustainable Management of Natural Resources: Proceedings of Tropentag 2009en
dc.titleDo Green Lacewings ('Mallada signata') Contribute to the Mortality of Helicoverpa on Transgenic Bt Cotton?en
dc.typeConference Publicationen
dc.relation.conferenceTropentag 2009: International Research on Food Security, Natural Resource Management and Rural Developmenten
dc.subject.keywordsCrop and Pasture Protection (Pests, Diseases and Weeds)en
dc.subject.keywordsTerrestrial Ecologyen
local.contributor.firstnameMd Habibullaren
local.contributor.firstnameJohnen
local.contributor.firstnamePeteren
local.contributor.firstnameAliceen
local.subject.for2008060208 Terrestrial Ecologyen
local.subject.for2008070308 Crop and Pasture Protection (Pests, Diseases and Weeds)en
local.subject.seo2008960413 Control of Plant Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environmentsen
local.subject.seo2008820301 Cottonen
local.profile.schoolEnvironmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailmbahar2@une.edu.auen
local.profile.emailjstanle4@une.edu.auen
local.profile.emailpgregg@une.edu.auen
local.profile.emailadelsoc2@une.edu.auen
local.output.categoryE3en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20100509-220732en
local.date.conference6th - 8th October, 2009en
local.conference.placeHamburg, Germanyen
local.publisher.placeWitzenhausen, Germanyen
local.format.startpage39en
local.format.endpage39en
local.contributor.lastnameBaharen
local.contributor.lastnameStanleyen
local.contributor.lastnameGreggen
local.contributor.lastnamedel Socorroen
dc.identifier.staffune-id:mbahar2en
dc.identifier.staffune-id:jstanle4en
dc.identifier.staffune-id:pgreggen
dc.identifier.staffune-id:adelsoc2en
local.profile.orcid0000-0001-7534-3567en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:6221en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleDo Green Lacewings ('Mallada signata') Contribute to the Mortality of Helicoverpa on Transgenic Bt Cotton?en
local.output.categorydescriptionE3 Extract of Scholarly Conference Publicationen
local.relation.urlhttp://www.tropentag.de/2009/abstracts/links/Bahar_SVOjtrCP.pdfen
local.relation.urlhttp://www.tropentag.de/2009/abstracts/links/Bahar_SVOjtrCP.phpen
local.conference.detailsTropentag 2009: International Research on Food Security, Natural Resource Management and Rural Development, Hamburg, Germany, 6th - 8th October, 2009en
local.search.authorBahar, Md Habibullaren
local.search.authorStanley, Johnen
local.search.authorGregg, Peteren
local.search.authordel Socorro, Aliceen
local.uneassociationUnknownen
local.conference.venueUniversity of Hamburgen
local.year.published2009en
local.date.start2009-10-06-
local.date.end2009-10-08-
Appears in Collections:Conference Publication
Files in This Item:
2 files
File Description SizeFormat 
Show simple item record

Page view(s)

1,138
checked on Mar 7, 2023
Google Media

Google ScholarTM

Check


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.