An overview of a systems model of cassava pests in Africa
A systems model is described for cassava, Manihot esculenta Crantz, two of its introduced herbivores, the cassava green mite (CGM), Mononychellus tanajoa (Bondar), sensu lato, and the cassava mealybug (CM), Phenacoccus manihoti Mat.-Ferr., the introduced CM parasitoid, Epidinocarsis lopezi (DeSantis...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
1987
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/108741 |
| _version_ | 1855542419577110528 |
|---|---|
| author | Gutiérrez, A.P. Wermelinger, B. Schulthess, F. Baumgaertner, J.U. Yaninek, John S. Herren, H.R. Neuenschwander, Peter Löhr, Bernhard Hammond, W.N.O. Ellis, C.K. |
| author_browse | Baumgaertner, J.U. Ellis, C.K. Gutiérrez, A.P. Hammond, W.N.O. Herren, H.R. Löhr, Bernhard Neuenschwander, Peter Schulthess, F. Wermelinger, B. Yaninek, John S. |
| author_facet | Gutiérrez, A.P. Wermelinger, B. Schulthess, F. Baumgaertner, J.U. Yaninek, John S. Herren, H.R. Neuenschwander, Peter Löhr, Bernhard Hammond, W.N.O. Ellis, C.K. |
| author_sort | Gutiérrez, A.P. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A systems model is described for cassava, Manihot esculenta Crantz, two of its introduced herbivores, the cassava green mite (CGM), Mononychellus tanajoa (Bondar), sensu lato, and the cassava mealybug (CM), Phenacoccus manihoti Mat.-Ferr., the introduced CM parasitoid, Epidinocarsis lopezi (DeSantis) and coccinellid predator of the genus Hyperaspis. The systems model includes the effects of weather, soil nitrogen and water levels on the interactions of the system’s components.
The model simulates the distribution of developmental times of cohorts initated at the same time, as well as the number and biomass (energy) dynamics of all populations over time. Biomass acquisition and allocation at the population and organism subunit levels (e.g. leaves, fruit, ova) were also simulated. A common acquisition (i.e. functional response) submodel was used to estimate daily photosynthetic as well as nitrogen and water uptake rates in cassava, in addition to herbivory, parasitism and predation rates for the arthropod species.
This paper presents an overview of the systems model. Simulation results for the plant under pest free conditions were compared to field data. In addition, the model was used to estimate tuber yield losses due to CM and CGM feeding, and to examine the beneficial effects of introduced CM natural enemies as measured by reductions in tuber yield losses. |
| format | Journal Article |
| id | CGSpace108741 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1987 |
| publishDateRange | 1987 |
| publishDateSort | 1987 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1087412024-05-01T08:20:00Z An overview of a systems model of cassava pests in Africa Gutiérrez, A.P. Wermelinger, B. Schulthess, F. Baumgaertner, J.U. Yaninek, John S. Herren, H.R. Neuenschwander, Peter Löhr, Bernhard Hammond, W.N.O. Ellis, C.K. cassava phenacoccus manihoti mononychellus tanajoa epidinocarsis lopezi hyperaspis africa A systems model is described for cassava, Manihot esculenta Crantz, two of its introduced herbivores, the cassava green mite (CGM), Mononychellus tanajoa (Bondar), sensu lato, and the cassava mealybug (CM), Phenacoccus manihoti Mat.-Ferr., the introduced CM parasitoid, Epidinocarsis lopezi (DeSantis) and coccinellid predator of the genus Hyperaspis. The systems model includes the effects of weather, soil nitrogen and water levels on the interactions of the system’s components. The model simulates the distribution of developmental times of cohorts initated at the same time, as well as the number and biomass (energy) dynamics of all populations over time. Biomass acquisition and allocation at the population and organism subunit levels (e.g. leaves, fruit, ova) were also simulated. A common acquisition (i.e. functional response) submodel was used to estimate daily photosynthetic as well as nitrogen and water uptake rates in cassava, in addition to herbivory, parasitism and predation rates for the arthropod species. This paper presents an overview of the systems model. Simulation results for the plant under pest free conditions were compared to field data. In addition, the model was used to estimate tuber yield losses due to CM and CGM feeding, and to examine the beneficial effects of introduced CM natural enemies as measured by reductions in tuber yield losses. 1987-12 2020-07-13T12:57:47Z 2020-07-13T12:57:47Z Journal Article https://hdl.handle.net/10568/108741 en Limited Access Springer Gutierrez, A.P., Wermelinger, B., Schulthess, F., Baumgärtner, J.U., Yaninek, J.S., Herren, H.R., ... & Ellis, C.K. (1987). An overview of a systems model of cassava and cassava pests in Africa. International Journal of Tropical Insect Science, 8(4-6), 919-924. |
| spellingShingle | cassava phenacoccus manihoti mononychellus tanajoa epidinocarsis lopezi hyperaspis africa Gutiérrez, A.P. Wermelinger, B. Schulthess, F. Baumgaertner, J.U. Yaninek, John S. Herren, H.R. Neuenschwander, Peter Löhr, Bernhard Hammond, W.N.O. Ellis, C.K. An overview of a systems model of cassava pests in Africa |
| title | An overview of a systems model of cassava pests in Africa |
| title_full | An overview of a systems model of cassava pests in Africa |
| title_fullStr | An overview of a systems model of cassava pests in Africa |
| title_full_unstemmed | An overview of a systems model of cassava pests in Africa |
| title_short | An overview of a systems model of cassava pests in Africa |
| title_sort | overview of a systems model of cassava pests in africa |
| topic | cassava phenacoccus manihoti mononychellus tanajoa epidinocarsis lopezi hyperaspis africa |
| url | https://hdl.handle.net/10568/108741 |
| work_keys_str_mv | AT gutierrezap anoverviewofasystemsmodelofcassavapestsinafrica AT wermelingerb anoverviewofasystemsmodelofcassavapestsinafrica AT schulthessf anoverviewofasystemsmodelofcassavapestsinafrica AT baumgaertnerju anoverviewofasystemsmodelofcassavapestsinafrica AT yaninekjohns anoverviewofasystemsmodelofcassavapestsinafrica AT herrenhr anoverviewofasystemsmodelofcassavapestsinafrica AT neuenschwanderpeter anoverviewofasystemsmodelofcassavapestsinafrica AT lohrbernhard anoverviewofasystemsmodelofcassavapestsinafrica AT hammondwno anoverviewofasystemsmodelofcassavapestsinafrica AT ellisck anoverviewofasystemsmodelofcassavapestsinafrica AT gutierrezap overviewofasystemsmodelofcassavapestsinafrica AT wermelingerb overviewofasystemsmodelofcassavapestsinafrica AT schulthessf overviewofasystemsmodelofcassavapestsinafrica AT baumgaertnerju overviewofasystemsmodelofcassavapestsinafrica AT yaninekjohns overviewofasystemsmodelofcassavapestsinafrica AT herrenhr overviewofasystemsmodelofcassavapestsinafrica AT neuenschwanderpeter overviewofasystemsmodelofcassavapestsinafrica AT lohrbernhard overviewofasystemsmodelofcassavapestsinafrica AT hammondwno overviewofasystemsmodelofcassavapestsinafrica AT ellisck overviewofasystemsmodelofcassavapestsinafrica |