The detection of snail host habitats in liver fluke infected farms by use of plant indicators

Rondelaud, D.; Hourdin, Philippe; Vignoles, Philippe; Dreyfuss, G.; Cabaret, Jacques

doi:10.1016/j.vetpar.2011.03.056

Cited by 50 publications

(65 citation statements)

References 18 publications

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“…These sites were subject to the same climatic conditions, with a wet temperate climate modulated by westerly oceanic winds. The mean annual rainfall noted during the 50 years preceding field investigations varied from 600 to 1000 mm, while the mean annual temperature was 10-11 xC (Dreyfuss et al, 2010;Rondelaud et al, 2011).…”

Section: Snail Habitatsmentioning

confidence: 99%

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Titi

Mekroud

Vignoles

et al. 2017

Ann. Limnol. - Int. J. Lim.

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-Transplantations of Omphiscola glabra from granite to marl, or vice versa, between farms known for cases of fasciolosis have shown differences in the maximum shell height of adult snails. To determine whether these differences were due to parasitism, soil geology, or a combination of both factors, four snail populations living on marl or granite were investigated over 12 months to specify the characteristics of egglaying in spring, and to follow the shell growth of both snail generations. In both types of habitats, the number of egg-masses per adult snail and their size significantly decreased during the 7 weeks of snail egg-laying. During this period, each adult snail on marl laid a mean of 6.4 masses and 93.3 eggs. On granite, the mean values were 5.7 masses and 69.1 eggs, respectively. Two annual generations, the first in spring and the other in autumn, were noted in these habitats. The maximum shell height of adults was different: a mean of 19.8 and 20.5 mm on marl compared with 17.2 and 18.2 mm on granite. Soil geology thus plays a role in the egg-laying and shell growth of O. glabra.

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Section: Snail Habitatsmentioning

confidence: 99%

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Titi

Mekroud

Vignoles

et al. 2017

Ann. Limnol. - Int. J. Lim.

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“…Voor de algengroei is zuurstofrijk water nodig waardoor het belangrijk is dat er af en toe water wordt ververst, het liefst met een regenbui (Charlier et al, 2014). Het slakje heeft een voorkeur voor een pH waarde van het water van hoger dan 5 (Rondelaud et al, 2011). Naast vocht en algen is de temperatuur ook een belangrijke factor voor de voortgang van de cyclus van de leverbot(slak).…”

Section: Figuur 2 Uitbreiding Van De Leverbotresistentie Voor Triclabunclassified

“…Daarnaast kan gekeken worden naar de aanwezigheid van indicator planten: planten die indicatief zijn voor de milieufactoren waarin het leverbotslakje goed kan gedijen. Deze indicatorplanten zijn: kropaar (Dactylis glomerata), veldrus (Juncus acutiflorus), pitrus (Juncus effusus), fioringras of wit struisgras (Agrostis stolonifera) en Mannagras (Glyceria fluitans) (Rondelaud et al, 2011). Echter, de aan-of afwezigheid van deze planten geeft geen zekerheid op het wel of niet aanwezig zijn van de leverbotslak.…”

Section: Biotoop En Indicatorplantenunclassified

Wat zijn de mogelijkheden om een leverbotinfectie van melkvee te voorkomen?

Neijenhuis

Verwer

Verkaik

2017

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. Wat zijn de mogelijkheden om een leverbotinfectie van melkvee te voorkomen? Wageningen Livestock Research, Louis Bolk Instituut, Rapport 1029.Samenvatting NL Infecties met leverbot zijn in toenemende mate een knelpunt in de diergezondheid van grazende (of vers gras gevoerde) herkauwers. Leverbotinfectie leidt tot ziekte met economische gevolgen en voor melkgevende dieren zijn geen anthelmintica vrij beschikbaar. In dit project is het leverbotinstrument ontwikkeld met als doel om veehouders inzicht en handelingsperspectief te geven ten aanzien van de leverbotsituatie op hun bedrijf. In dit rapport worden de resultaten van het leverbotinstrument weergegeven en van een drietal preventieve maatregelen die zijn uitgeprobeerd.Summary UK Liverfluke infections are increasingly a bottleneck in the animal health of grazing (or fresh grass fed) ruminants. Liverfluke leads to disease with economic consequences and for lactating animals no anthelmintics are freely available. This project has been working on the development of the liverfluke instrument with the aim of providing dairy farmers insight and action perspective regarding the liverfluke situation on their farm. This report presents the results of the liverfluke instrument and of three preventive measures that have been investigated.

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“…These habitats are small water bodies (SWB) and are defined as objects on a grazing pasture that contain temperate or permanent freshwater with a surface >0.5 m 2 . Five different SWB types were classified based on water presence and shape characteristics and literature review [13][14][15] (Figure 1). Per farm, 12 to 18 SWB were selected for monthly examination (April-November).…”

Section: Study Area and Small Water Bodiesmentioning

confidence: 99%

Longitudinal study on the temporal and micro-spatial distribution of Galba truncatula in four farms in Belgium as a base for small-scale risk mapping of Fasciola hepatica

Charlier

Soenen

Roeck

et al. 2014

Parasites & Vectors

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Background: The trematode parasite Fasciola hepatica causes important economic losses in ruminants worldwide. Current spatial distribution models do not provide sufficient detail to support farm-specific control strategies. A technology to reliably assess the spatial distribution of intermediate host snail habitats on farms would be a major step forward to this respect. The aim of this study was to conduct a longitudinal field survey in Flanders (Belgium) to (i) characterise suitable small water bodies (SWB) for Galba truncatula and (ii) describe the population dynamics of G. truncatula. Methods: Four F. hepatica-infected farms from two distinct agricultural regions were examined for the abundance of G. truncatula from the beginning (April 2012) until the end (November 2012) of the grazing season. Per farm, 12 to 18 SWB were selected for monthly examination, using a 10 m transect analysis. Observations on G. truncatula abundance were coupled with meteorological and (micro-)environmental factors and the within-herd prevalence of F. hepatica using simple comparison or negative binomial regression models. Results: A total of 54 examined SWB were classified as a pond, ditch, trench, furrow or moist area. G. truncatula abundance was significantly associated with SWB-type, region and total monthly precipitation, but not with monthly temperature. The clear differences in G. truncatula abundance between the 2 studied regions did not result in comparable differences in F. hepatica prevalence in the cattle. Exploration of the relationship of G. truncatula abundance with (micro)-environmental variables revealed a positive association with soil and water pH and the occurrence of Ranunculus sp. and a negative association with mowed pastures, water temperature and presence of reed-like plant species. Conclusions: Farm-level predictions of G. truncatula risk and subsequent risk for F. hepatica occurrence would require a rainfall, soil type (representing the agricultural region) and SWB layer in a geographic information system. While rainfall and soil type information is easily accessible, the recent advances in very high spatial resolution cameras carried on board of satellites, planes or drones should allow the delineation of SWBs in the future.

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The detection of snail host habitats in liver fluke infected farms by use of plant indicators

Cited by 50 publications

References 18 publications

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Wat zijn de mogelijkheden om een leverbotinfectie van melkvee te voorkomen?

Longitudinal study on the temporal and micro-spatial distribution of Galba truncatula in four farms in Belgium as a base for small-scale risk mapping of Fasciola hepatica

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