Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats
Lymnaea natalensis is the only snail intermediate host of Fasciola gigantica, the causative agent of fascioliasis, in Nigeria. The species also serves as intermediate host for many other African trematode species of medical and veterinary importance, and it is found throughout the country. However,...
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| Format: | Article |
| Language: | English |
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AOSIS
2023-05-01
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| Series: | Onderstepoort Journal of Veterinary Research |
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| Online Access: | https://ojvr.org/index.php/ojvr/article/view/2023 |
| _version_ | 1797814109733912576 |
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| author | Opeyemi G. Oso Joseph O. Sunday Alexander B. Odaibo |
| author_facet | Opeyemi G. Oso Joseph O. Sunday Alexander B. Odaibo |
| author_sort | Opeyemi G. Oso |
| collection | DOAJ |
| description | Lymnaea natalensis is the only snail intermediate host of Fasciola gigantica, the causative agent of fascioliasis, in Nigeria. The species also serves as intermediate host for many other African trematode species of medical and veterinary importance, and it is found throughout the country. However, there is no detailed information on the factors that influence its distribution and seasonal abundance in the tropical aquatic habitats in Nigeria. This study used the geographic information system and remotely sensed data to develop models for predicting the distribution of L. natalensis in South-Western Nigeria. Both land surface temperature (LST) and normalised difference vegetation index (NDVI) were extracted from Landsat satellite imagery; other variables (slope and elevation) were extracted from a digital elevation model (DEM) while rainfall data were retrieved from the European Meteorology Research Programme (EMRP). These environmental variables were integrated into a geographic information system (GIS) to predict suitable habitats of L. natalensis using exploratory regression. A total of 1410 L. natalensis snails were collected vis-à-vis 22 sampling sites. Built-up areas recorded more L. natalensis compared with farmlands. There was no significant difference in the abundance of snails with season (p 0.05). The regression models showed that rainfall, NDVI, and slope were predictors of L. natalensis distribution. The habitats suitable for L. natalensis were central areas, while areas to the north and south were not suitable for L. natalensis.
Contribution: The predictive risk models of L. natalensis in the study will be useful in mapping other areas where the snail sampling could not be conducted. |
| first_indexed | 2024-03-13T08:01:40Z |
| format | Article |
| id | doaj.art-ed1e94d8253749249289f4cd03d39822 |
| institution | Directory Open Access Journal |
| issn | 0030-2465 2219-0635 |
| language | English |
| last_indexed | 2024-03-13T08:01:40Z |
| publishDate | 2023-05-01 |
| publisher | AOSIS |
| record_format | Article |
| series | Onderstepoort Journal of Veterinary Research |
| spelling | doaj.art-ed1e94d8253749249289f4cd03d398222023-06-01T14:13:26ZengAOSISOnderstepoort Journal of Veterinary Research0030-24652219-06352023-05-01901e1e1310.4102/ojvr.v90i1.2023695Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitatsOpeyemi G. Oso0Joseph O. Sunday1Alexander B. Odaibo2Department of Zoology, Faculty of Science, University of Ibadan, IbadanParasitology Unit, Department of Zoology, Kwara State University, Malete, Kwara StateDepartment of Zoology, Faculty of Science, University of Ibadan, IbadanLymnaea natalensis is the only snail intermediate host of Fasciola gigantica, the causative agent of fascioliasis, in Nigeria. The species also serves as intermediate host for many other African trematode species of medical and veterinary importance, and it is found throughout the country. However, there is no detailed information on the factors that influence its distribution and seasonal abundance in the tropical aquatic habitats in Nigeria. This study used the geographic information system and remotely sensed data to develop models for predicting the distribution of L. natalensis in South-Western Nigeria. Both land surface temperature (LST) and normalised difference vegetation index (NDVI) were extracted from Landsat satellite imagery; other variables (slope and elevation) were extracted from a digital elevation model (DEM) while rainfall data were retrieved from the European Meteorology Research Programme (EMRP). These environmental variables were integrated into a geographic information system (GIS) to predict suitable habitats of L. natalensis using exploratory regression. A total of 1410 L. natalensis snails were collected vis-à-vis 22 sampling sites. Built-up areas recorded more L. natalensis compared with farmlands. There was no significant difference in the abundance of snails with season (p 0.05). The regression models showed that rainfall, NDVI, and slope were predictors of L. natalensis distribution. The habitats suitable for L. natalensis were central areas, while areas to the north and south were not suitable for L. natalensis. Contribution: The predictive risk models of L. natalensis in the study will be useful in mapping other areas where the snail sampling could not be conducted.https://ojvr.org/index.php/ojvr/article/view/2023geographic information system (gis/rs)modellingrisk maplymnaea natalensis (l. natalensis)rain forest |
| spellingShingle | Opeyemi G. Oso Joseph O. Sunday Alexander B. Odaibo Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats Onderstepoort Journal of Veterinary Research geographic information system (gis/rs) modelling risk map lymnaea natalensis (l. natalensis) rain forest |
| title | Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats |
| title_full | Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats |
| title_fullStr | Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats |
| title_full_unstemmed | Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats |
| title_short | Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats |
| title_sort | temporal modelling of lymnaea natalensis krauss 1848 in tropical aquatic habitats |
| topic | geographic information system (gis/rs) modelling risk map lymnaea natalensis (l. natalensis) rain forest |
| url | https://ojvr.org/index.php/ojvr/article/view/2023 |
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