Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance
Populations of Mononychellus tanajoa (Bondar) increased on new leaf growth of cassava, Manihot esculenta Crantz, during the early dry season, averaging 20–200 active mites per leaf depending on plant age, leaf age, and cultivar. Mite populations declined later in the dry season, when severe defoliat...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
1989
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/175857 |
| _version_ | 1855536911477637120 |
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| author | Yaninek, J. Herren, H.R. Gutierrez, A.P. |
| author_browse | Gutierrez, A.P. Herren, H.R. Yaninek, J. |
| author_facet | Yaninek, J. Herren, H.R. Gutierrez, A.P. |
| author_sort | Yaninek, J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Populations of Mononychellus tanajoa (Bondar) increased on new leaf growth of cassava, Manihot esculenta Crantz, during the early dry season, averaging 20–200 active mites per leaf depending on plant age, leaf age, and cultivar. Mite populations declined later in the dry season, when severe defoliation and reduced leaf production followed prolonged drought. Early rains resulted in a flush of new foliage that supported an increase in mite numbers, but rainfall drove mite populations to less than one individual per leaf several months into the wet season. Throughout the growing season, mite age structure was relatively constant within, but varied between, strata of the canopy. Differences between strata were related to the age of the foliage. These results suggest that the availability of new foliage and the presence of rainfall are the primary factors limiting M. tanajoa populations in Africa. |
| format | Journal Article |
| id | CGSpace175857 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1989 |
| publishDateRange | 1989 |
| publishDateSort | 1989 |
| record_format | dspace |
| spelling | CGSpace1758572025-12-08T10:11:39Z Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance Yaninek, J. Herren, H.R. Gutierrez, A.P. arachnida mononychellus tanajoa, phenology cassava Populations of Mononychellus tanajoa (Bondar) increased on new leaf growth of cassava, Manihot esculenta Crantz, during the early dry season, averaging 20–200 active mites per leaf depending on plant age, leaf age, and cultivar. Mite populations declined later in the dry season, when severe defoliation and reduced leaf production followed prolonged drought. Early rains resulted in a flush of new foliage that supported an increase in mite numbers, but rainfall drove mite populations to less than one individual per leaf several months into the wet season. Throughout the growing season, mite age structure was relatively constant within, but varied between, strata of the canopy. Differences between strata were related to the age of the foliage. These results suggest that the availability of new foliage and the presence of rainfall are the primary factors limiting M. tanajoa populations in Africa. 1989-08-01 2025-07-29T12:43:30Z 2025-07-29T12:43:30Z Journal Article https://hdl.handle.net/10568/175857 en Limited Access application/pdf Yaninek, J.S., Herren, H.R., & Gutierrez, A.P. (1989). Dynamics of Mononychellus tanajoa (Acari: Tetranychidae) in Africa: seasonal factors affecting phenology and abundance. Environmental entomology, 18(4), 625-632. |
| spellingShingle | arachnida mononychellus tanajoa, phenology cassava Yaninek, J. Herren, H.R. Gutierrez, A.P. Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance |
| title | Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance |
| title_full | Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance |
| title_fullStr | Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance |
| title_full_unstemmed | Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance |
| title_short | Dynamics of mononychellus tanajoa (acari: tetranychidae) in africa: seasonal factors affecting phenology and abundance |
| title_sort | dynamics of mononychellus tanajoa acari tetranychidae in africa seasonal factors affecting phenology and abundance |
| topic | arachnida mononychellus tanajoa, phenology cassava |
| url | https://hdl.handle.net/10568/175857 |
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