Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa
Wecreated a detailed model of the Maruca vitrata (F.) and cowpea [Vigna unguiculata (L.) Walp] system to study the possible evolution of resistance by the insect to transgenic insecticidal cowpea, which is under development. We focused on population dynamics and genetics in a region of west Africa....
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Oxford University Press
2012
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| Online Access: | https://hdl.handle.net/10568/79815 |
| _version_ | 1855533798577405952 |
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| author | Onstad, D.W. Kang, J. Ba, Malick N. Tamo, Manuele Jackai, L.E.N. Dabiré, C. Pittendrigh, Barry Robert |
| author_browse | Ba, Malick N. Dabiré, C. Jackai, L.E.N. Kang, J. Onstad, D.W. Pittendrigh, Barry Robert Tamo, Manuele |
| author_facet | Onstad, D.W. Kang, J. Ba, Malick N. Tamo, Manuele Jackai, L.E.N. Dabiré, C. Pittendrigh, Barry Robert |
| author_sort | Onstad, D.W. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Wecreated a detailed model of the Maruca vitrata (F.) and cowpea [Vigna unguiculata
(L.) Walp] system to study the possible evolution of resistance by the insect to transgenic insecticidal
cowpea, which is under development. We focused on population dynamics and genetics in a region
of west Africa. We simulated single-toxin and pyramided (two-toxin) cowpea and emphasized
conservative, worst-case scenarios in our analysis. The results indicate that as long as a pyramided,
transgenic cowpea can be developed, seed saving by farmers and reliance on natural refuge are not
major problems for resistance management. Furthermore, it is possible that one or both toxins in the
pyramid may not need to be high dose for evolution to be delayed signiÞcantly ( 20 yr or 80
generations for resistance to become a concern if transgenic cowpea is deployed in areas where M.
vitrata is endemic). If efforts are made to deploy transgenic cowpea only into the regions where M.
vitrata is not endemic, then there is little to no concern with resistance emerging in the M. vitrata
population. |
| format | Journal Article |
| id | CGSpace79815 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace798152024-04-25T06:01:25Z Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa Onstad, D.W. Kang, J. Ba, Malick N. Tamo, Manuele Jackai, L.E.N. Dabiré, C. Pittendrigh, Barry Robert bt cowpea resistance management simulation Wecreated a detailed model of the Maruca vitrata (F.) and cowpea [Vigna unguiculata (L.) Walp] system to study the possible evolution of resistance by the insect to transgenic insecticidal cowpea, which is under development. We focused on population dynamics and genetics in a region of west Africa. We simulated single-toxin and pyramided (two-toxin) cowpea and emphasized conservative, worst-case scenarios in our analysis. The results indicate that as long as a pyramided, transgenic cowpea can be developed, seed saving by farmers and reliance on natural refuge are not major problems for resistance management. Furthermore, it is possible that one or both toxins in the pyramid may not need to be high dose for evolution to be delayed signiÞcantly ( 20 yr or 80 generations for resistance to become a concern if transgenic cowpea is deployed in areas where M. vitrata is endemic). If efforts are made to deploy transgenic cowpea only into the regions where M. vitrata is not endemic, then there is little to no concern with resistance emerging in the M. vitrata population. 2012-10 2017-02-13T13:41:30Z 2017-02-13T13:41:30Z Journal Article https://hdl.handle.net/10568/79815 en Limited Access Oxford University Press Onstad, D.W., Kang, J., Ba, N.M., Tamò, M., Jackai, L., Dabire, C., ... & Pittendrigh, B.R. (2012). Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa. Environmental entomology, 41(5), Onstad, D. W., Kang, J., Ba, N. M., Tamò, M., Jackai, Ò. L., Dabire, C., & Pittendrigh, B. R. (2012). Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa. Environmental Entomology, 41(5), 1255-1267. |
| spellingShingle | bt cowpea resistance management simulation Onstad, D.W. Kang, J. Ba, Malick N. Tamo, Manuele Jackai, L.E.N. Dabiré, C. Pittendrigh, Barry Robert Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa |
| title | Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa |
| title_full | Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa |
| title_fullStr | Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa |
| title_full_unstemmed | Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa |
| title_short | Modeling evolution of resistance by Maruca vitrata (Lepidoptera: Crambidae) to transgenic insecticidal cowpea in Africa |
| title_sort | modeling evolution of resistance by maruca vitrata lepidoptera crambidae to transgenic insecticidal cowpea in africa |
| topic | bt cowpea resistance management simulation |
| url | https://hdl.handle.net/10568/79815 |
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