Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties
Three field trials were conducted at Namulonge Agricultural and Animal Production Research Institute to investigate the population dynamics of Bemisia tabaci Gennadius and its associated aphelinid parasitoids in Uganda. Results showed that more whitefly occurred on the cassava mosaic disease-resista...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Informa UK Limited
2006
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/91414 |
| _version_ | 1855529484340428800 |
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| author | Otim, M. Legg, D.J. Kyamanywa, S. Polaszek, A. Gerling, D. |
| author_browse | Gerling, D. Kyamanywa, S. Legg, D.J. Otim, M. Polaszek, A. |
| author_facet | Otim, M. Legg, D.J. Kyamanywa, S. Polaszek, A. Gerling, D. |
| author_sort | Otim, M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Three field trials were conducted at Namulonge Agricultural and Animal Production Research Institute to investigate the population dynamics of Bemisia tabaci Gennadius and its associated aphelinid parasitoids in Uganda. Results showed that more whitefly occurred on the cassava mosaic disease-resistant variety, (Nase 4) compared to the susceptible variety, (Ebwanatereka). Two species of aphelinid parasitoids, Eretmocerus mundus Mercet and Encarsia sophia Girault and Dodd, were identified during the study. Overall percent parasitism did not differ significantly (P>0.05) between varieties in all the trials, but significant differences occurred at 13, 15 and 21 weeks after planting during late season (2000), 18 weeks after planting during early season (2001), and 8 weeks after planting during late season (2001). The trends in the build up in numbers of both parasitoids species and apparent parasitism were similar, differed significantly on certain dates. It was, however, noted that percent parasitism decreased with nymph number. The significance of this phenomenon on the potential use of these aphelinid parasitoids as biocontrol agents of the cassava whitefly is discussed. |
| format | Journal Article |
| id | CGSpace91414 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace914142024-05-15T05:11:48Z Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties Otim, M. Legg, D.J. Kyamanywa, S. Polaszek, A. Gerling, D. bemisia tabaci biological control african cassava mosaic virus encarsia sophia eretmocerus mundus population dynamics aphelinid parasitoids Three field trials were conducted at Namulonge Agricultural and Animal Production Research Institute to investigate the population dynamics of Bemisia tabaci Gennadius and its associated aphelinid parasitoids in Uganda. Results showed that more whitefly occurred on the cassava mosaic disease-resistant variety, (Nase 4) compared to the susceptible variety, (Ebwanatereka). Two species of aphelinid parasitoids, Eretmocerus mundus Mercet and Encarsia sophia Girault and Dodd, were identified during the study. Overall percent parasitism did not differ significantly (P>0.05) between varieties in all the trials, but significant differences occurred at 13, 15 and 21 weeks after planting during late season (2000), 18 weeks after planting during early season (2001), and 8 weeks after planting during late season (2001). The trends in the build up in numbers of both parasitoids species and apparent parasitism were similar, differed significantly on certain dates. It was, however, noted that percent parasitism decreased with nymph number. The significance of this phenomenon on the potential use of these aphelinid parasitoids as biocontrol agents of the cassava whitefly is discussed. 2006-02 2018-03-07T11:25:51Z 2018-03-07T11:25:51Z Journal Article https://hdl.handle.net/10568/91414 en Limited Access Informa UK Limited Otim, M., Legg, D.J., Kyamanywa, S., Polaszek, A. & Gerling, D. (2006). Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease–resistant and susceptible varieties. Biocontrol Science and Technology, 16(2), 205-214. |
| spellingShingle | bemisia tabaci biological control african cassava mosaic virus encarsia sophia eretmocerus mundus population dynamics aphelinid parasitoids Otim, M. Legg, D.J. Kyamanywa, S. Polaszek, A. Gerling, D. Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties |
| title | Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties |
| title_full | Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties |
| title_fullStr | Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties |
| title_full_unstemmed | Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties |
| title_short | Population dynamics of Bemisia tabaci (Homoptera: Aleyrodidae) parasitoids on cassava mosaic disease resistant and susceptible varieties |
| title_sort | population dynamics of bemisia tabaci homoptera aleyrodidae parasitoids on cassava mosaic disease resistant and susceptible varieties |
| topic | bemisia tabaci biological control african cassava mosaic virus encarsia sophia eretmocerus mundus population dynamics aphelinid parasitoids |
| url | https://hdl.handle.net/10568/91414 |
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