Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco
Bulinus truncatus, the intermediate host of Schistosoma haematobium, is widely distributed in modern irrigation schemes in Morocco. These schemes have intermittent irrigation and canals dry out in between irrigation periods. The snail species is therefore associated with the 'siphon boxes' connectin...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Informa UK Limited
2009
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/40622 |
| _version_ | 1855524537648545792 |
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| author | Laamrani, Hammou Madsen, H. Boelee, Eline |
| author_browse | Boelee, Eline Laamrani, Hammou Madsen, H. |
| author_facet | Laamrani, Hammou Madsen, H. Boelee, Eline |
| author_sort | Laamrani, Hammou |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Bulinus truncatus, the intermediate host of Schistosoma haematobium, is widely distributed in modern irrigation schemes in Morocco. These schemes have intermittent irrigation and canals dry out in between irrigation periods. The snail species is therefore associated with the 'siphon boxes' connecting canal segments, as these contain water that stagnates between irrigation cycles. The micro-distribution of snails in siphon boxes, was studied before and after one irrigation period, to identify factors that could be manipulated in order to control this snail species. Density of B. truncatus, Ancylus fluviatilis, Lymnaea peregra and Melanopsis praemorsa varied significantly with water depth before and after irrigation. The pulmonate snail species had the highest densities at depths ranging between 20 and 80 cm. After an irrigation period of 10 to 12 hours B. truncatus, A. fluviatilis and L. peregra were relatively more abundant at the bottom of the siphon boxes than in the upper sections. Aggregation at the corners of the boxes could be among the factors that enable snail species to avoid the detrimental effect of turbulent water flow during irrigation. The relevance of changes in density and micro-distribution following an irrigation cycle in the control of B. truncatus is discussed. |
| format | Journal Article |
| id | CGSpace40622 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace406222025-06-17T08:23:41Z Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco Laamrani, Hammou Madsen, H. Boelee, Eline schistosomiasis disease vectors snails lymnaea habitats environmental control environmental management irrigation schemes statistical methods Bulinus truncatus, the intermediate host of Schistosoma haematobium, is widely distributed in modern irrigation schemes in Morocco. These schemes have intermittent irrigation and canals dry out in between irrigation periods. The snail species is therefore associated with the 'siphon boxes' connecting canal segments, as these contain water that stagnates between irrigation cycles. The micro-distribution of snails in siphon boxes, was studied before and after one irrigation period, to identify factors that could be manipulated in order to control this snail species. Density of B. truncatus, Ancylus fluviatilis, Lymnaea peregra and Melanopsis praemorsa varied significantly with water depth before and after irrigation. The pulmonate snail species had the highest densities at depths ranging between 20 and 80 cm. After an irrigation period of 10 to 12 hours B. truncatus, A. fluviatilis and L. peregra were relatively more abundant at the bottom of the siphon boxes than in the upper sections. Aggregation at the corners of the boxes could be among the factors that enable snail species to avoid the detrimental effect of turbulent water flow during irrigation. The relevance of changes in density and micro-distribution following an irrigation cycle in the control of B. truncatus is discussed. 2009-05 2014-06-13T14:48:03Z 2014-06-13T14:48:03Z Journal Article https://hdl.handle.net/10568/40622 en Limited Access Informa UK Limited Laamrani, H.; Madsen, H.; Boelee, Eline. 2009. Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco. African Journal of Aquatic Science, 34(1):27-33. doi: https://doi.org/10.2989/AJAS.2009.34.1.3.728 |
| spellingShingle | schistosomiasis disease vectors snails lymnaea habitats environmental control environmental management irrigation schemes statistical methods Laamrani, Hammou Madsen, H. Boelee, Eline Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco |
| title | Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco |
| title_full | Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco |
| title_fullStr | Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco |
| title_full_unstemmed | Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco |
| title_short | Micro-distribution of freshwater snails before and after water flow events in hydraulic structures in Tessaout Amont Irrigation System, Morocco |
| title_sort | micro distribution of freshwater snails before and after water flow events in hydraulic structures in tessaout amont irrigation system morocco |
| topic | schistosomiasis disease vectors snails lymnaea habitats environmental control environmental management irrigation schemes statistical methods |
| url | https://hdl.handle.net/10568/40622 |
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