Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa
The weevil Neohydronomus affinis Hustache (Coleoptera : Curculionidae) of Neotropical origin was imported into Benin in 1993 and released in 1995 for the biological control of water lettuce Pistia stratiotes L. (Araceae). After the release of N. affinis in water bodies linked to the Mono River syste...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2003
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/107624 |
| _version_ | 1855525682604408832 |
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| author | Ajuonu, O. Neuenschwander, Peter |
| author_browse | Ajuonu, O. Neuenschwander, Peter |
| author_facet | Ajuonu, O. Neuenschwander, Peter |
| author_sort | Ajuonu, O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The weevil Neohydronomus affinis Hustache (Coleoptera : Curculionidae) of Neotropical origin was imported into Benin in 1993 and released in 1995 for the biological control of water lettuce Pistia stratiotes L. (Araceae). After the release of N. affinis in water bodies linked to the Mono River system, southwestern Benin, larval mines characteristic of immature stages were observed in all seasons in the first year and the weevil was considered established. Two years later, it had spread 90 km from the release site to the Ouémé River, and by 2000 to Savalou, which is 250 km to the northwest. It also established in the north, in the watershed of the Niger River. At the two sites monitored, total plant biomass and weed cover fluctuated with seasonal factors but declined about ten-fold, which indicated successful biological control of water lettuce by the weevil. |
| format | Journal Article |
| id | CGSpace107624 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2003 |
| publishDateRange | 2003 |
| publishDateSort | 2003 |
| record_format | dspace |
| spelling | CGSpace1076242024-01-17T12:58:34Z Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa Ajuonu, O. Neuenschwander, Peter weevils water lettuce The weevil Neohydronomus affinis Hustache (Coleoptera : Curculionidae) of Neotropical origin was imported into Benin in 1993 and released in 1995 for the biological control of water lettuce Pistia stratiotes L. (Araceae). After the release of N. affinis in water bodies linked to the Mono River system, southwestern Benin, larval mines characteristic of immature stages were observed in all seasons in the first year and the weevil was considered established. Two years later, it had spread 90 km from the release site to the Ouémé River, and by 2000 to Savalou, which is 250 km to the northwest. It also established in the north, in the watershed of the Niger River. At the two sites monitored, total plant biomass and weed cover fluctuated with seasonal factors but declined about ten-fold, which indicated successful biological control of water lettuce by the weevil. 2003-09 2020-03-12T10:06:22Z 2020-03-12T10:06:22Z Journal Article https://hdl.handle.net/10568/107624 en Limited Access Ajuonu, O. & Neuenschwander, P. (2003). Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Bénin, West Africa. African Entomology, 11, 205-212. |
| spellingShingle | weevils water lettuce Ajuonu, O. Neuenschwander, Peter Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa |
| title | Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa |
| title_full | Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa |
| title_fullStr | Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa |
| title_full_unstemmed | Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa |
| title_short | Release, establishment, spread, and impact of the weevil Neohydronomus affinis (Coleoptera: Curculionidae) on water lettuce (Pistia stratiotes) in Benin, West Africa |
| title_sort | release establishment spread and impact of the weevil neohydronomus affinis coleoptera curculionidae on water lettuce pistia stratiotes in benin west africa |
| topic | weevils water lettuce |
| url | https://hdl.handle.net/10568/107624 |
| work_keys_str_mv | AT ajuonuo releaseestablishmentspreadandimpactoftheweevilneohydronomusaffiniscoleopteracurculionidaeonwaterlettucepistiastratiotesinbeninwestafrica AT neuenschwanderpeter releaseestablishmentspreadandimpactoftheweevilneohydronomusaffiniscoleopteracurculionidaeonwaterlettucepistiastratiotesinbeninwestafrica |