Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France
Field investigations on the habitats colonized by Galba truncatula or Omphiscola glabra were carried out on 162 farms of the Limousin region, Central France, to determine whether there is currently a decline in the number and size of snail populations. Seven types of snail habitats were considered h...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2016-01-01
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| Series: | Parasite |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1051/parasite/2016055 |
| _version_ | 1797642675398115328 |
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| author | Dreyfuss Gilles Vignoles Philippe Rondelaud Daniel |
| author_facet | Dreyfuss Gilles Vignoles Philippe Rondelaud Daniel |
| author_sort | Dreyfuss Gilles |
| collection | DOAJ |
| description | Field investigations on the habitats colonized by Galba truncatula or Omphiscola glabra were carried out on 162 farms of the Limousin region, Central France, to determine whether there is currently a decline in the number and size of snail populations. Seven types of snail habitats were considered here. Compared to the numbers of snail populations recorded from 1976 to 1992, the values noted from 2013 to 2016 were significantly lower, with a decline rate of 34% for G. truncatula and 23% for O. glabra. Variations in this decline rate with the type of snail habitat were also noted. The greatest decreases in the numbers of snail populations were noted for spring heads located in meadows and for road ditches, while the lowest were noted for open drainage furrows present in meadows. The distribution of these habitats according to their area did not show any significant change over time. In contrast, overwintering snails were significantly less numerous in 2013–2016 in five types of habitats for G. truncatula and in three types only for O. glabra. Several causes underlie this population decline. Among them, the current development of mechanical cleaning in open drainage systems and road ditches, that of subsurface drainage in meadows, and regular gyro-crushing of vegetation around temporary spring heads were the most important. |
| first_indexed | 2024-03-11T14:03:42Z |
| format | Article |
| id | doaj.art-d91ecb247fac4098b204af04c158969c |
| institution | Directory Open Access Journal |
| issn | 1776-1042 |
| language | English |
| last_indexed | 2024-03-11T14:03:42Z |
| publishDate | 2016-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Parasite |
| spelling | doaj.art-d91ecb247fac4098b204af04c158969c2023-11-02T03:24:15ZengEDP SciencesParasite1776-10422016-01-01234610.1051/parasite/2016055parasite160051Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central FranceDreyfuss GillesVignoles PhilippeRondelaud DanielField investigations on the habitats colonized by Galba truncatula or Omphiscola glabra were carried out on 162 farms of the Limousin region, Central France, to determine whether there is currently a decline in the number and size of snail populations. Seven types of snail habitats were considered here. Compared to the numbers of snail populations recorded from 1976 to 1992, the values noted from 2013 to 2016 were significantly lower, with a decline rate of 34% for G. truncatula and 23% for O. glabra. Variations in this decline rate with the type of snail habitat were also noted. The greatest decreases in the numbers of snail populations were noted for spring heads located in meadows and for road ditches, while the lowest were noted for open drainage furrows present in meadows. The distribution of these habitats according to their area did not show any significant change over time. In contrast, overwintering snails were significantly less numerous in 2013–2016 in five types of habitats for G. truncatula and in three types only for O. glabra. Several causes underlie this population decline. Among them, the current development of mechanical cleaning in open drainage systems and road ditches, that of subsurface drainage in meadows, and regular gyro-crushing of vegetation around temporary spring heads were the most important.http://dx.doi.org/10.1051/parasite/2016055Galba truncatulaOmphiscola glabraPopulation declineSnail densitySnail habitat |
| spellingShingle | Dreyfuss Gilles Vignoles Philippe Rondelaud Daniel Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France Parasite Galba truncatula Omphiscola glabra Population decline Snail density Snail habitat |
| title | Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France |
| title_full | Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France |
| title_fullStr | Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France |
| title_full_unstemmed | Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France |
| title_short | Current decline in the number and size of Galba truncatula and Omphiscola glabra populations, intermediate hosts of Fasciola hepatica, on the acidic soils of Central France |
| title_sort | current decline in the number and size of galba truncatula and omphiscola glabra populations intermediate hosts of fasciola hepatica on the acidic soils of central france |
| topic | Galba truncatula Omphiscola glabra Population decline Snail density Snail habitat |
| url | http://dx.doi.org/10.1051/parasite/2016055 |
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