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Host-plant mediated effects of transgenic maize on the insect parasitoid campoletis sonorensis (hymenoptera : ichneumonidae)

Host-plant mediated effects of transgenic maize on the insect parasitoid campoletis sonorensis (hymenoptera : ichneumonidae)
Host-plant mediated effects of transgenic maize on the insect parasitoid campoletis sonorensis (hymenoptera : ichneumonidae)
Determining the impact of genetically modified (GM) crops on beneficial organisms is an important aspect of the environmental risk assessment of GM crops. In the present study, the impact of Bt maize expressing Cry1Ab on the development and behaviour of the parasitoid Campoletis sonorensis was compared to individuals reared on hosts fed conventionally bred plants partially resistant to the European corn borer (Ostrinia nubilalis Hübner) and on susceptible maize hybrids. Adult parasitoids reared on Bt maize-fed Spodoptera frugiperda larvae were significantly smaller (15–30%) than those reared in hosts fed either of the conventional maize hybrids. The magnitude of this effect was dependent on the size of the host at oviposition and its subsequent growth rate. The development time of C. sonorensis was not affected by the maize treatment. In choice tests, female parasitoids displayed no preference for hosts fed a specific maize hybrid. No Cry1Ab was detected within adult parasitoids.
Parasitoid, host-mediated, Cry1Ab, non-target organism, bacillus thuringiensis, Bt maize, sublethal effects, maize, host-plant resistance, risk assessment, biosafety, tritrophic interactions
1049-9644
362-369
Sanders, Christopher.J.
48c468d6-f166-4113-99fe-db4903c0a135
Pell, Judith.K.
6e8dc0cd-33dc-4f79-8ee0-4673e9169b85
Poppy, Guy.M.
e18524cf-10ae-4ab4-b50c-e73e7d841389
Raybould, Alan
e4a5e6e0-5482-4bab-a016-7a319464aedf
Garcia-Alonso, Monica
7899abf2-8d23-4ffd-94af-e89cc73f154f
Schuler, Tanja.H.
10b5469e-bc59-4411-bb69-c3385fd885e0
Sanders, Christopher.J.
48c468d6-f166-4113-99fe-db4903c0a135
Pell, Judith.K.
6e8dc0cd-33dc-4f79-8ee0-4673e9169b85
Poppy, Guy.M.
e18524cf-10ae-4ab4-b50c-e73e7d841389
Raybould, Alan
e4a5e6e0-5482-4bab-a016-7a319464aedf
Garcia-Alonso, Monica
7899abf2-8d23-4ffd-94af-e89cc73f154f
Schuler, Tanja.H.
10b5469e-bc59-4411-bb69-c3385fd885e0

Sanders, Christopher.J., Pell, Judith.K., Poppy, Guy.M., Raybould, Alan, Garcia-Alonso, Monica and Schuler, Tanja.H. (2007) Host-plant mediated effects of transgenic maize on the insect parasitoid campoletis sonorensis (hymenoptera : ichneumonidae). Biological Control, 40 (3), 362-369. (doi:10.1016/j.biocontrol.2006.12.010).

Record type: Article

Abstract

Determining the impact of genetically modified (GM) crops on beneficial organisms is an important aspect of the environmental risk assessment of GM crops. In the present study, the impact of Bt maize expressing Cry1Ab on the development and behaviour of the parasitoid Campoletis sonorensis was compared to individuals reared on hosts fed conventionally bred plants partially resistant to the European corn borer (Ostrinia nubilalis Hübner) and on susceptible maize hybrids. Adult parasitoids reared on Bt maize-fed Spodoptera frugiperda larvae were significantly smaller (15–30%) than those reared in hosts fed either of the conventional maize hybrids. The magnitude of this effect was dependent on the size of the host at oviposition and its subsequent growth rate. The development time of C. sonorensis was not affected by the maize treatment. In choice tests, female parasitoids displayed no preference for hosts fed a specific maize hybrid. No Cry1Ab was detected within adult parasitoids.

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More information

Published date: March 2007
Keywords: Parasitoid, host-mediated, Cry1Ab, non-target organism, bacillus thuringiensis, Bt maize, sublethal effects, maize, host-plant resistance, risk assessment, biosafety, tritrophic interactions

Identifiers

Local EPrints ID: 56526
URI: http://eprints.soton.ac.uk/id/eprint/56526
ISSN: 1049-9644
PURE UUID: b42f8a5b-7e41-452d-83af-0211e1e80d15

Catalogue record

Date deposited: 07 Aug 2008
Last modified: 15 Mar 2024 11:02

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Contributors

Author: Christopher.J. Sanders
Author: Judith.K. Pell
Author: Guy.M. Poppy
Author: Alan Raybould
Author: Monica Garcia-Alonso
Author: Tanja.H. Schuler

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