Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa
Cashew, Anacardium occidentale L. is an important export crop in Benin, but incurs serious damage from the cashew wood borer Apate terebrans Pallas. In spite of its economic importance, the population dynamics of this beetle have never been studied, thus precluding any science-based development and...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Entomological Society of Southern Africa
2017
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| Acceso en línea: | https://hdl.handle.net/10568/80782 |
| _version_ | 1855525418486988800 |
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| author | Agboton, C. Onzo, A. Korie, S. Tamo, Manuele Vidal, S. |
| author_browse | Agboton, C. Korie, S. Onzo, A. Tamo, Manuele Vidal, S. |
| author_facet | Agboton, C. Onzo, A. Korie, S. Tamo, Manuele Vidal, S. |
| author_sort | Agboton, C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cashew, Anacardium occidentale L. is an important export crop in Benin, but incurs serious damage from the cashew wood borer Apate terebrans Pallas. In spite of its economic importance, the population dynamics of this beetle have never been studied, thus precluding any science-based development and implementation of control strategies. The spatial and temporal abundance pattern of A. terebrans was therefore monitored in 17 mature cashew orchards distributed across three agro-ecological zones in Benin. In each orchard, 30 cashew trees were chosen at random and inspected monthly for two consecutive years. As this insect feeds inside branches and trunks by boring holes, direct observations of adults inside the tree are not possible. Therefore infestations of trees were estimated by the occurrence and number of fresh entry holes. Over the two-year observation period, infestations in the cashew trees by A. terebrans started in September, peaked in January–February and sharply declined thereafter, reaching zero by July–August. Whereas the infestation rates were statistically similar between sampling years or among agro-ecological zones, they differed significantly among sampling months. Aggregation indices calculated using Taylor's power law indicated that A. terebrans has an aggregated spatial distribution. Values of the Spatial Analysis by Distance IndicEs (SADIE) index indicated that the spatial pattern of the infestation in a given year does not depend on the pattern observed in the previous years, suggesting that A. terebrans generally prefers to infest new trees. Implications of our findings for the development, implementation and monitoring of effective control strategies against A. terebrans are discussed. |
| format | Journal Article |
| id | CGSpace80782 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Entomological Society of Southern Africa |
| publisherStr | Entomological Society of Southern Africa |
| record_format | dspace |
| spelling | CGSpace807822025-01-27T15:00:52Z Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa Agboton, C. Onzo, A. Korie, S. Tamo, Manuele Vidal, S. cashew anacardium occidentale cashew wood borer abundance pattern entry holes aggregation index Cashew, Anacardium occidentale L. is an important export crop in Benin, but incurs serious damage from the cashew wood borer Apate terebrans Pallas. In spite of its economic importance, the population dynamics of this beetle have never been studied, thus precluding any science-based development and implementation of control strategies. The spatial and temporal abundance pattern of A. terebrans was therefore monitored in 17 mature cashew orchards distributed across three agro-ecological zones in Benin. In each orchard, 30 cashew trees were chosen at random and inspected monthly for two consecutive years. As this insect feeds inside branches and trunks by boring holes, direct observations of adults inside the tree are not possible. Therefore infestations of trees were estimated by the occurrence and number of fresh entry holes. Over the two-year observation period, infestations in the cashew trees by A. terebrans started in September, peaked in January–February and sharply declined thereafter, reaching zero by July–August. Whereas the infestation rates were statistically similar between sampling years or among agro-ecological zones, they differed significantly among sampling months. Aggregation indices calculated using Taylor's power law indicated that A. terebrans has an aggregated spatial distribution. Values of the Spatial Analysis by Distance IndicEs (SADIE) index indicated that the spatial pattern of the infestation in a given year does not depend on the pattern observed in the previous years, suggesting that A. terebrans generally prefers to infest new trees. Implications of our findings for the development, implementation and monitoring of effective control strategies against A. terebrans are discussed. 2017-03-01 2017-04-24T09:46:46Z 2017-04-24T09:46:46Z Journal Article https://hdl.handle.net/10568/80782 en Limited Access Entomological Society of Southern Africa Agboton, C., Onzo, A., Korie, S., Tamò, M. & Vidal, S. (2017). Spatial and temporal infestation rates of Apate terebrans (Coleoptera: Bostrichidae) in cashew Orchards in Benin, West Africa. African Entomology, 25(1), 24-36. |
| spellingShingle | cashew anacardium occidentale cashew wood borer abundance pattern entry holes aggregation index Agboton, C. Onzo, A. Korie, S. Tamo, Manuele Vidal, S. Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa |
| title | Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa |
| title_full | Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa |
| title_fullStr | Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa |
| title_full_unstemmed | Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa |
| title_short | Spatial and temporal infestation rates of Apate terebrans (Coleoptera: bostrichidae) in cashew orchards in Benin, west Africa |
| title_sort | spatial and temporal infestation rates of apate terebrans coleoptera bostrichidae in cashew orchards in benin west africa |
| topic | cashew anacardium occidentale cashew wood borer abundance pattern entry holes aggregation index |
| url | https://hdl.handle.net/10568/80782 |
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