Revised Disease Risk Analysis for the Conservation Translocation of the Eurasian Beaver (Castor fiber) to England [NECR540]

摘要: In a disease risk analysis (DRA) on the conservation translocation of free-living beavers from either Norway or Great Britain, or those housed in either fenced enclosures or zoological collections in Great Britain, to England, 96 hazards (89 infectious and seven non-infectious) were evaluated and 26 received detailed analysis. This DRA was an expanded and updated version of one published in 2020 (Donald, Common, and Sainsbury 2021) and analysed an additional 28 hazards, of which four required detailed evaluation. The revision included a new translocation pathway in which beavers held in fenced enclosures, and other captive collections, in Great Britain might be released, in addition to the two pathways previously investigated. This included beavers held in naturalistic, fenced enclosures as well as those held in private and zoological collections. Contact between these beavers and with exotic mammalian species was considered in the risk analysis.Of the 26 hazards assessed in detail, 17 were of high or medium risk of precipitating disease in beavers or sympatric mammals, including people: Echinococcus multilocularis; Leptospira spp.; Yersinia spp.; Toxoplasma gondii (as both a carrier and population hazard); Taenia spp.; persecution; captivity; road traffic collisions; Eimeria spp.;