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Title

Wildlife population monitoring as a key component of wildlife disease surveillance

AuthorsBoadella, Mariana ; Acevedo, Pelayo ; Escudero, Marco A.; Gortázar, Christian
Issue Date2012
Citation61st WDA/10th EWDA (2012)
AbstractWildlife disease monitoring consists in the systematic recording of epidemiological data, with no other specific purpose than detecting temporal trends. Ideally, disease data should integrate with data on host abundance and distribution but unfortunately, this information is often lacking or fragmentary. As a noteworthy exception to this role, we present the example of Aragon, a 47,719 km2 large region in Spain, where wildlife species were monitored for the last 20 years. Data on kilometric abundance indices were recorded in 63 localities with a total of 176,951 km covered. Hares showed a global decreasing trend. The 1998 hare abundance peak coincided with a peak of hare-linked human tularemia cases. The European wild rabbit recovered over the studied period after an historical decline due to myxomatosis and the more recent rabbit hemorrhagic disease in 1988-89. Canids such as stray dogs and foxes experienced a significant decline, possibly due to the combined effects of closing rubbish dumps and improved domestic ruminant carcass disposal after the BSE crisis. Contrary, Eurasian badgers (a suitable host for Mycobacterium bovis) increased significantly in abundance and distribution. Three ungulates showed variable time trends. This can affect animal health through effects on vector or host availability. In summary, the monitoring scheme allowed identifying short and longterm population trends that significantly improve our understanding of wildlife disease dynamics.
DescriptionResumen del trabajo presentado a la 61st Wildlife Disease Association and 10th Biennial European Wildlife Disease Association: "convergence in wildlife health", celebrada en Lyon (Francia) del 23 al 27 de julio de 2012.
URIhttp://hdl.handle.net/10261/146766
Appears in Collections:(IREC) Comunicaciones congresos
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