Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatula
Field investigations in 14 wild watercress beds located in the French region of Limousin, a known endemic area for distomatosis, were performed for three years to determine the distance that cercariae of Fasciola hepatica can reach in water before their encystment on the host plant. Each bed was loc...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2020-01-01
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| Series: | Parasite |
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| Online Access: | https://www.parasite-journal.org/articles/parasite/full_html/2020/01/parasite190166/parasite190166.html |
| _version_ | 1797427453187063808 |
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| author | Rondelaud Daniel Vignoles Philippe Dreyfuss Gilles |
| author_facet | Rondelaud Daniel Vignoles Philippe Dreyfuss Gilles |
| author_sort | Rondelaud Daniel |
| collection | DOAJ |
| description | Field investigations in 14 wild watercress beds located in the French region of Limousin, a known endemic area for distomatosis, were performed for three years to determine the distance that cercariae of Fasciola hepatica can reach in water before their encystment on the host plant. Each bed was located on the course of an open drainage furrow, while snails (Galba truncatula) lived upstream around the emergence of a source. Five plant species were collected in early April and examined to find metacercariae. Most cysts were noted on Nasturtium officinale (188 on 48.7 kg of dripped plants), followed by Helosciadium nodiflorum (125 on 33.4 kg). On the other plant species, there were few larvae. Most cercariae encysted on the plants growing in the most upstream part of each bed, usually on the first 50 cm in length. When water in the beds was fast running, the distribution of metacercariae was more limited and their number was fewer than those in the beds fed by a slow flow of water. Cercariae were able to swim or were carried away by the current up to a mean of 5 m in slow-flow waters before encysting; this distance was only 4 m in faster waters. Plants growing on the most upstream section of a watercress bed located in a drainage furrow are the most used by cercariae for their encystment, when snails live around the emergence of a source. The speed of the water current affected the number and distribution of metacercariae in the bed. |
| first_indexed | 2024-03-09T08:44:16Z |
| format | Article |
| id | doaj.art-caebbd70ee924a56ae30fe90749acbe7 |
| institution | Directory Open Access Journal |
| issn | 1776-1042 |
| language | English |
| last_indexed | 2024-03-09T08:44:16Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Parasite |
| spelling | doaj.art-caebbd70ee924a56ae30fe90749acbe72023-12-02T15:47:29ZengEDP SciencesParasite1776-10422020-01-01271710.1051/parasite/2020013parasite190166Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatulaRondelaud Daniel0Vignoles Philippe1Dreyfuss Gilles2Laboratory of Parasitology, Faculty of PharmacyLaboratory of Parasitology, Faculty of PharmacyLaboratory of Parasitology, Faculty of PharmacyField investigations in 14 wild watercress beds located in the French region of Limousin, a known endemic area for distomatosis, were performed for three years to determine the distance that cercariae of Fasciola hepatica can reach in water before their encystment on the host plant. Each bed was located on the course of an open drainage furrow, while snails (Galba truncatula) lived upstream around the emergence of a source. Five plant species were collected in early April and examined to find metacercariae. Most cysts were noted on Nasturtium officinale (188 on 48.7 kg of dripped plants), followed by Helosciadium nodiflorum (125 on 33.4 kg). On the other plant species, there were few larvae. Most cercariae encysted on the plants growing in the most upstream part of each bed, usually on the first 50 cm in length. When water in the beds was fast running, the distribution of metacercariae was more limited and their number was fewer than those in the beds fed by a slow flow of water. Cercariae were able to swim or were carried away by the current up to a mean of 5 m in slow-flow waters before encysting; this distance was only 4 m in faster waters. Plants growing on the most upstream section of a watercress bed located in a drainage furrow are the most used by cercariae for their encystment, when snails live around the emergence of a source. The speed of the water current affected the number and distribution of metacercariae in the bed.https://www.parasite-journal.org/articles/parasite/full_html/2020/01/parasite190166/parasite190166.htmlfasciola hepaticalimousinmetacercarianasturtium officinalewatercress bed |
| spellingShingle | Rondelaud Daniel Vignoles Philippe Dreyfuss Gilles Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatula Parasite fasciola hepatica limousin metacercaria nasturtium officinale watercress bed |
| title | Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatula |
| title_full | Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatula |
| title_fullStr | Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatula |
| title_full_unstemmed | Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatula |
| title_short | Fasciola hepatica: the dispersal of cercariae shed by the snail Galba truncatula |
| title_sort | fasciola hepatica the dispersal of cercariae shed by the snail galba truncatula |
| topic | fasciola hepatica limousin metacercaria nasturtium officinale watercress bed |
| url | https://www.parasite-journal.org/articles/parasite/full_html/2020/01/parasite190166/parasite190166.html |
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