Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda
Damage by banana weevil, Cosmopolites sordidus (Germar), contributed to the decline and disappearance of highland cooking-bananas (Musa spp., type AAA-EA) from the central region of Uganda. Commercial growers in the southwest use chemical insecticides for the control of the weevil although resistanc...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
1999
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/96043 |
| _version_ | 1855528213075197952 |
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| author | Gold, C. Bagabe, M.I. Ssendege, R. |
| author_browse | Bagabe, M.I. Gold, C. Ssendege, R. |
| author_facet | Gold, C. Bagabe, M.I. Ssendege, R. |
| author_sort | Gold, C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Damage by banana weevil, Cosmopolites sordidus (Germar), contributed to the decline and disappearance of highland cooking-bananas (Musa spp., type AAA-EA) from the central region of Uganda. Commercial growers in the southwest use chemical insecticides for the control of the weevil although resistance to dieldrin was suspected as the cause of weevil outbreaks in the mid-1980s. Carborfuran, which replaced dieldrin, has also been reported by some farmers to be ineffective against banana weevil. In this study, banana weevils from three farms in the Masaka District, Uganda, were screened for possible resistance to carbofuran and dieldrin. Test populations of banana weevils were not resistant to carbofuran: LD5o values were 3.3-4.5 times higher for males and 1.3-1.7 times higher for females than those for a reference population assumed to be susceptible. This is within the range of normal variability among field populations. Slopes of probit regression lines were steeper for test populations than those of the reference population, while LD99 values were similar among all populations. Two of the test populations had LD5o values for dieldrin twice that of the reference population, while the third had an LD5o value similar to that of the reference group. |
| format | Journal Article |
| id | CGSpace96043 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1999 |
| publishDateRange | 1999 |
| publishDateSort | 1999 |
| record_format | dspace |
| spelling | CGSpace960432023-06-12T15:17:24Z Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda Gold, C. Bagabe, M.I. Ssendege, R. bananas carbofuran cosmopolites sordidus insecticide resistance dieldrin Damage by banana weevil, Cosmopolites sordidus (Germar), contributed to the decline and disappearance of highland cooking-bananas (Musa spp., type AAA-EA) from the central region of Uganda. Commercial growers in the southwest use chemical insecticides for the control of the weevil although resistance to dieldrin was suspected as the cause of weevil outbreaks in the mid-1980s. Carborfuran, which replaced dieldrin, has also been reported by some farmers to be ineffective against banana weevil. In this study, banana weevils from three farms in the Masaka District, Uganda, were screened for possible resistance to carbofuran and dieldrin. Test populations of banana weevils were not resistant to carbofuran: LD5o values were 3.3-4.5 times higher for males and 1.3-1.7 times higher for females than those for a reference population assumed to be susceptible. This is within the range of normal variability among field populations. Slopes of probit regression lines were steeper for test populations than those of the reference population, while LD99 values were similar among all populations. Two of the test populations had LD5o values for dieldrin twice that of the reference population, while the third had an LD5o value similar to that of the reference group. 1999 2018-07-05T06:30:31Z 2018-07-05T06:30:31Z Journal Article https://hdl.handle.net/10568/96043 en Limited Access Gold, R., Bagabe, M. I. & Ssendege, R. (1999). Banana weevil, Cosmopolites sordidus (Germar)(Coleoptera: Curculionidae): tests for suspected resistance to carbofuran and dieldrin in the Masaka District, Uganda. African Entomology, 7(2), 189-196. |
| spellingShingle | bananas carbofuran cosmopolites sordidus insecticide resistance dieldrin Gold, C. Bagabe, M.I. Ssendege, R. Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda |
| title | Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda |
| title_full | Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda |
| title_fullStr | Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda |
| title_full_unstemmed | Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda |
| title_short | Banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) tests for suspected resistance to carbofuran and dieldrin in Masaka District, Uganda |
| title_sort | banana weevil cosmopolites sordidus germar coleoptera curculionidae tests for suspected resistance to carbofuran and dieldrin in masaka district uganda |
| topic | bananas carbofuran cosmopolites sordidus insecticide resistance dieldrin |
| url | https://hdl.handle.net/10568/96043 |
| work_keys_str_mv | AT goldc bananaweevilcosmopolitessordidusgermarcoleopteracurculionidaetestsforsuspectedresistancetocarbofurananddieldrininmasakadistrictuganda AT bagabemi bananaweevilcosmopolitessordidusgermarcoleopteracurculionidaetestsforsuspectedresistancetocarbofurananddieldrininmasakadistrictuganda AT ssendeger bananaweevilcosmopolitessordidusgermarcoleopteracurculionidaetestsforsuspectedresistancetocarbofurananddieldrininmasakadistrictuganda |