Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta)
The geminiviruses of cassava mosaic virus (CMGs) (Geminiviridae, Begomovirus) and their whitefly vector, Bemisia tabaci, produce the major losses in root yield of cassava crops in Asia and Africa. Recent evidence suggests that B. tabaci represents a complex of morphologically indistinguishable popul...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Español |
| Publicado: |
2008
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| Acceso en línea: | https://hdl.handle.net/10568/44272 |
| _version_ | 1855540856282415104 |
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| author | Carabalí Muñoz, A. Montoya Lerma, J. Bellotti, Anthony C. |
| author_browse | Bellotti, Anthony C. Carabalí Muñoz, A. Montoya Lerma, J. |
| author_facet | Carabalí Muñoz, A. Montoya Lerma, J. Bellotti, Anthony C. |
| author_sort | Carabalí Muñoz, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The geminiviruses of cassava mosaic virus (CMGs) (Geminiviridae, Begomovirus) and their whitefly vector, Bemisia tabaci, produce the major losses in root yield of cassava crops in Asia and Africa. Recent evidence suggests that B. tabaci represents a complex of morphologically indistinguishable populations with numerous biotypes. In the Americas, although cassava seems not to be a suitable host for the polyphagous biotype B, it has being postulated that the absence of CMGs and the mechanical damage are related with incapability of this biotype to colonize efficiently this crop. However, previous studies have demonstrated that their adaptation to cassava, via alternate hosts, is a risk that must always be kept in mind. The main objective of this study was to evaluate the development and reproduction of B. tabaci biotype B feeding on three genotypes of M. esculenta (MEcu72, CG489-34 and CMC-40). Bioassays, carried out under controlled conditions (25±2°C, 70±5RH; 12:12 LD), were used to evaluate longevity, fecundity, reproduction and demographic parameters through life tables. Although mean values for longevity were similar in MEcu72, CG489-34 and CMC-40 (6.3, 5.07, and 3.9 days, respectively) CMC-40 showed the lowest oviposition rate (0.49 eggs/female/ 2days) compared with MEcu72 (0.89) and CG489-34 (0.86). With a very low survival rate (0.03), MEcu72 was the only genotype where the biotype B was able to complete its development from egg to adult, requiring 55.1 days. Results are discussed in terms of evaluating the potential adaptation of B. tabaci on commercial cassava genotypes. |
| format | Journal Article |
| id | CGSpace44272 |
| institution | CGIAR Consortium |
| language | Español |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| record_format | dspace |
| spelling | CGSpace442722025-05-28T14:52:21Z Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta) Development and reproduction of Bemisia tabaci "B" (Hemiptera: Aleyrodidae) on cassava (Manihot esculenta) genotypes Carabalí Muñoz, A. Montoya Lerma, J. Bellotti, Anthony C. manihot esculenta genotypes bemisia tabaci tolerance to pests genotipos tolerancia a las plagas The geminiviruses of cassava mosaic virus (CMGs) (Geminiviridae, Begomovirus) and their whitefly vector, Bemisia tabaci, produce the major losses in root yield of cassava crops in Asia and Africa. Recent evidence suggests that B. tabaci represents a complex of morphologically indistinguishable populations with numerous biotypes. In the Americas, although cassava seems not to be a suitable host for the polyphagous biotype B, it has being postulated that the absence of CMGs and the mechanical damage are related with incapability of this biotype to colonize efficiently this crop. However, previous studies have demonstrated that their adaptation to cassava, via alternate hosts, is a risk that must always be kept in mind. The main objective of this study was to evaluate the development and reproduction of B. tabaci biotype B feeding on three genotypes of M. esculenta (MEcu72, CG489-34 and CMC-40). Bioassays, carried out under controlled conditions (25±2°C, 70±5RH; 12:12 LD), were used to evaluate longevity, fecundity, reproduction and demographic parameters through life tables. Although mean values for longevity were similar in MEcu72, CG489-34 and CMC-40 (6.3, 5.07, and 3.9 days, respectively) CMC-40 showed the lowest oviposition rate (0.49 eggs/female/ 2days) compared with MEcu72 (0.89) and CG489-34 (0.86). With a very low survival rate (0.03), MEcu72 was the only genotype where the biotype B was able to complete its development from egg to adult, requiring 55.1 days. Results are discussed in terms of evaluating the potential adaptation of B. tabaci on commercial cassava genotypes. Los geminivirus del mosaico de la yuca (CMGs) (Geminiviridae, Begomovirus) y su vector la mosca blanca, Bemisia tabaci, ocasionan las mayores pérdidas en el rendimiento de raíces a cultivos de yuca en África y Asia. Evidencias recientes sugieren que B. tabaci representa un complejo de poblaciones indistinguibles morfológicamente con numerosos biotipos. En las Américas, aunque la yuca parece no ser un hospedero conveniente para el polífago biotipo B, se ha postulado que la ausencia de CMGs y daño mecánico están relacionados con la inhabilidad de este biotipo para colonizar eficientemente este cultivo. No obstante, resultados previos han demostrado que su adaptación a yuca, vía hospederos alternos, es un riesgo que debe tenerse siempre en mente. Este estudio tuvo como objetivo principal evaluar el desarrollo y la reproducción del biotipo B de B. tabaci al alimentarse sobre tres genotipos de M. esculenta (MEcu72, CG489-34 y CMC-40). A través de bioensayos bajo condiciones controladas (25 ± 2°C, 70 ± 5 HR. 12L:12O) se evaluó longevidad, fecundidad, supervivencia y parámetros demográficos, mediante tablas de vida. Aunque las longevidades medias para MEcu72, CG489-34 y CMC-40 fueron similares (6,3, 5,07 y 3,9 días, respectivamente), CMC-40 presentó la tasa de oviposición más baja (0,49 huevos/hembra/2días) comparada con MEcu72 (0,89) y CG489-34 (0,86). Con una tasa de supervivencia muy baja (0,03) MEcu72 fue el único genotipo donde el biotipo B completó su desarrollo de huevo a adulto, necesitando 55,1 días. Los resultados son discutidos evaluando el potencial de adaptación de B. tabaci en Sur América sobre genotipos comerciales de yuca. 2008 2014-10-02T08:33:31Z 2014-10-02T08:33:31Z Journal Article https://hdl.handle.net/10568/44272 es Open Access |
| spellingShingle | manihot esculenta genotypes bemisia tabaci tolerance to pests genotipos tolerancia a las plagas Carabalí Muñoz, A. Montoya Lerma, J. Bellotti, Anthony C. Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta) |
| title | Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta) |
| title_full | Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta) |
| title_fullStr | Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta) |
| title_full_unstemmed | Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta) |
| title_short | Desarrollo y reproducción de Bemisia tabaci "B" (Hemiptera: Aleyrodidae) sobre genotipos de yuca (Manihot esculenta) |
| title_sort | desarrollo y reproduccion de bemisia tabaci b hemiptera aleyrodidae sobre genotipos de yuca manihot esculenta |
| topic | manihot esculenta genotypes bemisia tabaci tolerance to pests genotipos tolerancia a las plagas |
| url | https://hdl.handle.net/10568/44272 |
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