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Cumming, Graeme S.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; graeme.cumming@uct.ac.za; Hockey, Philip A. R.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; phil.hockey@uct.ac.za; Bruinzeel, Leo W.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; lbruinze@adu.uct.ac.za; Du Plessis, Morne A.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; mornedup@vodamail.co.za. |
Global analyses of the potential for avian influenza transmission by wild birds have ignored key characteristics of the southern African avifauna. Although southern Africa hosts a variety of migratory, Holarctic-breeding wading birds and shorebirds, the documented prevalence of avian influenza in these species is low. The primary natural carriers of influenza viruses in the northern hemisphere are the anatids, i.e., ducks. In contrast to Palearctic-breeding species, most southern African anatids do not undertake predictable annual migrations and do not follow migratory flyways. Here we present a simple, spatially explicit risk analysis for avian influenza transmission by wild ducks in southern Africa. We developed a risk value for each of 16 southern... |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Anatidae; Avian influenza; Botswana; Ducks; Influenza; Landscape ecology; Namibia; Pathogen; South Africa; Virus; Waterfowl; Zimbabwe.. |
Ano: 2008 |
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Fernandes,Berenice M. M.; Menezes,Rodrigo C.; Tortelly,Rogério; Noronha,Dely; Pinto,Roberto M.. |
The digenetic trematode Psilochasmus oxyurus (Creplin, 1835) Lühe, 1909, although with a large geographical distribution, is referred in geese (Anser anser Linnaeus, 1758) for the first time in South America, on the basis of specimens parasitizing Brazilian domestic geese, with a prevalence of 20%. Brief morphometric data on the parasites are included. Clinical signs, gross and microscopic lesions were not observed in the birds. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatidae; Anseriformes; Birds; Brazil; Digeneans; Psilostomidae. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000200037 |
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