Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa
There is an increasing awareness that vegetation diversity can affect herbi-vore and natural enemy abundance and that plants can play a major rolein directly manipulating natural enemy abundance for protection againstherbivore attacks. Using data from cassava fields, we aimed at (i) testingthe capac...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Wiley
2014
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| Online Access: | https://hdl.handle.net/10568/75908 |
| _version_ | 1855523204530962432 |
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| author | Onzo, A. Hanna, R. Toko, M. |
| author_browse | Hanna, R. Onzo, A. Toko, M. |
| author_facet | Onzo, A. Hanna, R. Toko, M. |
| author_sort | Onzo, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | There is an increasing awareness that vegetation diversity can affect herbi-vore and natural enemy abundance and that plants can play a major rolein directly manipulating natural enemy abundance for protection againstherbivore attacks. Using data from cassava fields, we aimed at (i) testingthe capacity of the predatory miteTyphlodromalus aripoto control the her-bivorous miteMononychellus tanajoain a chemical exclusion trial; and (ii)testing, based on the differential preference byT. aripofor cassava culti-vars, how combinations of two morphologically different cassava cultivarswith differential suitability to the predator can improve its populationdensities on the non-favourable cultivar, thereby reducingM. tanajoaden-sities with subsequent increases in cassava yield. The study was conductedin a cassava field in Benin, West Africa. The experiments confirmed thatT. aripoeffectively suppressesM. tanajoapopulations on both cultivarsand showed, in the no-predator-exclusion experiments, that cultivar com-binations have significant effects onM. tanajoaandT. aripodensities.Indeed,T. aripoload on the non-preferred cultivar was lowest in subplotswhere the proportion ofT. aripo-preferred cultivar was also low, while,and as expected,M. tanajoaload on the non-preferred cultivar showeddecreasing trends with increasingT. aripodensities. The possible mecha-nisms by which cultivar mixing could increase predator load on the non-favourable cultivar were discussed. Our data showed that appropriatecultivar combinations effectively compensate for morphologically relateddifferences in natural enemy abundance on a normally predator-deficientcultivar, resulting in lower pest densities on the non-favourable cultivar.In practical terms, this strategy could, in part, enhance adoption of culti-vars that do not support sufficient levels of natural enemies for pest con-trol. |
| format | Journal Article |
| id | CGSpace75908 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace759082024-05-01T08:16:54Z Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa Onzo, A. Hanna, R. Toko, M. manihot esculenta phytoseiidae tetranychidae biological control cassava mononychellus tanajoa There is an increasing awareness that vegetation diversity can affect herbi-vore and natural enemy abundance and that plants can play a major rolein directly manipulating natural enemy abundance for protection againstherbivore attacks. Using data from cassava fields, we aimed at (i) testingthe capacity of the predatory miteTyphlodromalus aripoto control the her-bivorous miteMononychellus tanajoain a chemical exclusion trial; and (ii)testing, based on the differential preference byT. aripofor cassava culti-vars, how combinations of two morphologically different cassava cultivarswith differential suitability to the predator can improve its populationdensities on the non-favourable cultivar, thereby reducingM. tanajoaden-sities with subsequent increases in cassava yield. The study was conductedin a cassava field in Benin, West Africa. The experiments confirmed thatT. aripoeffectively suppressesM. tanajoapopulations on both cultivarsand showed, in the no-predator-exclusion experiments, that cultivar com-binations have significant effects onM. tanajoaandT. aripodensities.Indeed,T. aripoload on the non-preferred cultivar was lowest in subplotswhere the proportion ofT. aripo-preferred cultivar was also low, while,and as expected,M. tanajoaload on the non-preferred cultivar showeddecreasing trends with increasingT. aripodensities. The possible mecha-nisms by which cultivar mixing could increase predator load on the non-favourable cultivar were discussed. Our data showed that appropriatecultivar combinations effectively compensate for morphologically relateddifferences in natural enemy abundance on a normally predator-deficientcultivar, resulting in lower pest densities on the non-favourable cultivar.In practical terms, this strategy could, in part, enhance adoption of culti-vars that do not support sufficient levels of natural enemies for pest con-trol. 2014-05 2016-07-04T08:15:21Z 2016-07-04T08:15:21Z Journal Article https://hdl.handle.net/10568/75908 en Limited Access Wiley Onzo, A., Hanna, R. & Toko, M. (2014). Mix‐planting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa. Journal of Applied Entomology, 138(4), 297-306. |
| spellingShingle | manihot esculenta phytoseiidae tetranychidae biological control cassava mononychellus tanajoa Onzo, A. Hanna, R. Toko, M. Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa |
| title | Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa |
| title_full | Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa |
| title_fullStr | Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa |
| title_full_unstemmed | Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa |
| title_short | Mixplanting pubescent and glabrous cassava affects abundance of Typhlodromalus aripo and its prey mite Mononychellus tanajoa |
| title_sort | mixplanting pubescent and glabrous cassava affects abundance of typhlodromalus aripo and its prey mite mononychellus tanajoa |
| topic | manihot esculenta phytoseiidae tetranychidae biological control cassava mononychellus tanajoa |
| url | https://hdl.handle.net/10568/75908 |
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