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    Spatial patterns of Fasciola hepatica and Calicophoron daubneyi infections in ruminants in Ireland and modelling of C. daubneyi infection

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    Author
    Naranjo-Lucena, Amalia
    Munita, Maria P
    Martinez-Ibeas, Ana M
    McGrath, Guy
    Murray, Gerard
    Casey, Micheal
    Good, Barbara
    Sayers, Riona cc
    Mulcahy, Grace
    Zintl, Annetta
    Keyword
    Calicophoron daubneyi
    Fasciola hepatica
    co-infection
    Kernel density
    Machine Learning
    Risk factors
    Risk mapping
    Prediction
    Date
    2018-09-29
    
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    URI
    http://hdl.handle.net/11019/1602
    Citation
    Naranjo-Lucena A, Munita Corbalán MP, Martínez-Ibeas AM, McGrath G, Murray G, Casey M, Good B, Sayers R, Mulcahy G, Zintl A. Spatial patterns of Fasciola hepatica and Calicophoron daubneyi infections in ruminants in Ireland and modelling of C. daubneyi infection. Parasites & Vectors 2018;11(1):531; doi 10.1186/s13071-018-3114-z
    Abstract
    Background Fasciola hepatica has always represented a threat to Irish livestock because the Irish climate is highly suitable for the main local intermediate host of the parasite, the snail Galba truncatula. The recent clinical emergence of infections due to Calicophoron daubneyi has raised the question of whether the two parasites, which share a niche during part of their life-cycles, interact in some way. Here, we used geographical information systems (GIS) to analyse the distribution of both parasites in cattle and sheep. We also developed the first predictive model of paramphistomosis in Ireland. Results Our results indicated that, in cattle, liver fluke infection is less common than rumen fluke infection and does not exhibit the same seasonal fluctuations. Overall, we found that cattle had a higher likelihood of being infected with rumen fluke than sheep (OR = 3.134, P < 0.01). In addition, infection with one parasite increased the odds of infection with the other in both host species. Rumen fluke in cattle showed the highest spatial density of infection. Environmental variables such as soil drainage, land cover and habitat appeared to be the most important risk factors for C. daubneyi infection, followed by rainfall and vegetation. Overall the risk of infection with this parasite was predicted to be higher in the west of the country. Conclusions This study shows differences between the infection rates and spatial patterns of bovine and ovine infections with F. hepatica and C. daubneyi in Ireland. Whether the reasons for this are due to susceptibility, exposure and/or management factors is yet to be determined. Furthermore, the rumen fluke model indicates distinct risk factors and predicted distribution to those of F. hepatica, suggesting potential biological differences between both parasite species.
    Funder
    European Union; Department of Agriculture, Food and the Marine, Ireland
    Grant Number
    635408); 13/S/405
    ae974a485f413a2113503eed53cd6c53
    https://doi.org/10.1186/s13071-018-3114-z
    Scopus Count
    Collections
    Teagasc publications in Biomed Central
    Animal & Bioscience

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