Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa
Despite considerable effort for surveillance of wild birds for avian influenza viruses (AIVs), empirical investigations of ecological drivers of AIV prevalence in wild birds are still scarce. Here we used a continental-scale dataset, collected in tropical wetlands of 15 African countries, to test the relative roles of a range of ecological factors on patterns of AIV prevalence in wildfowl. Seasonal and geographical variations in prevalence were positively related to the local density of the wildfowl community and to the wintering period of Eurasian migratory birds in Africa. The predominant influence of wildfowl density with no influence of climatic conditions suggests, in contrast to temperate regions, a predominant role for inter-individual transmission rather than transmission via long-lived virus persisting in the environment. Higher prevalences were found in Anas species than in non-Anas species even when we account for differences in their foraging behaviour (primarily dabbling or not) or their geographical origin (Eurasian or Afro-tropical), suggesting the existence of intrinsic differences between wildfowl taxonomic groups in receptivity to infection. Birds were found infected as often in oropharyngeal as in cloacal samples, but rarely for both types of sample concurrently, indicating that both respiratory and digestive tracts may be important for AIV replication. Keywords: influenza A virus; pathogen transmission; disease ecology; wild birds; tropical; migration.
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Biblioteca del CIRAD Francia |
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L73 - Maladies des animaux L20 - Écologie animale Influenzavirus aviaire oiseau animal sauvage épidémiologie climat tropical facteur du milieu migration animale transmission des maladies vecteur de maladie Anas canard http://aims.fao.org/aos/agrovoc/c_9017 http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_24103 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_7973 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_8786 http://aims.fao.org/aos/agrovoc/c_2406 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_2723 L73 - Maladies des animaux L20 - Écologie animale Influenzavirus aviaire oiseau animal sauvage épidémiologie climat tropical facteur du milieu migration animale transmission des maladies vecteur de maladie Anas canard http://aims.fao.org/aos/agrovoc/c_9017 http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_24103 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_7973 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_8786 http://aims.fao.org/aos/agrovoc/c_2406 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_2723 |
spellingShingle |
L73 - Maladies des animaux L20 - Écologie animale Influenzavirus aviaire oiseau animal sauvage épidémiologie climat tropical facteur du milieu migration animale transmission des maladies vecteur de maladie Anas canard http://aims.fao.org/aos/agrovoc/c_9017 http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_24103 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_7973 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_8786 http://aims.fao.org/aos/agrovoc/c_2406 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_2723 L73 - Maladies des animaux L20 - Écologie animale Influenzavirus aviaire oiseau animal sauvage épidémiologie climat tropical facteur du milieu migration animale transmission des maladies vecteur de maladie Anas canard http://aims.fao.org/aos/agrovoc/c_9017 http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_24103 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_7973 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_8786 http://aims.fao.org/aos/agrovoc/c_2406 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_2723 Gaidet, Nicolas Caron, Alexandre Cappelle, Julien Cumming, Graeme S. Balança, Gilles Hammoumi, Saliha Cattoli, Giovanni Abolnik, Célia Servan de Almeida, Renata Gil, Patricia Fereidouni, Sasan R. Grosbois, Vladimir Tran, Annelise Mundava, Josephine Fofana, Bouba Ould El Mamy, Ahmed Bezeid Ndlovu, Mduduzi Mondain-Monval, J.Y. Triplet, Patrick Hagemeijer, Ward Karesh, William B. Newman, Scott Dodman, Tim Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa |
description |
Despite considerable effort for surveillance of wild birds for avian influenza viruses (AIVs), empirical investigations of ecological drivers of AIV prevalence in wild birds are still scarce. Here we used a continental-scale dataset, collected in tropical wetlands of 15 African countries, to test the relative roles of a range of ecological factors on patterns of AIV prevalence in wildfowl. Seasonal and geographical variations in prevalence were positively related to the local density of the wildfowl community and to the wintering period of Eurasian migratory birds in Africa. The predominant influence of wildfowl density with no influence of climatic conditions suggests, in contrast to temperate regions, a predominant role for inter-individual transmission rather than transmission via long-lived virus persisting in the environment. Higher prevalences were found in Anas species than in non-Anas species even when we account for differences in their foraging behaviour (primarily dabbling or not) or their geographical origin (Eurasian or Afro-tropical), suggesting the existence of intrinsic differences between wildfowl taxonomic groups in receptivity to infection. Birds were found infected as often in oropharyngeal as in cloacal samples, but rarely for both types of sample concurrently, indicating that both respiratory and digestive tracts may be important for AIV replication. Keywords: influenza A virus; pathogen transmission; disease ecology; wild birds; tropical; migration. |
format |
article |
topic_facet |
L73 - Maladies des animaux L20 - Écologie animale Influenzavirus aviaire oiseau animal sauvage épidémiologie climat tropical facteur du milieu migration animale transmission des maladies vecteur de maladie Anas canard http://aims.fao.org/aos/agrovoc/c_9017 http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_24103 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_7973 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_8786 http://aims.fao.org/aos/agrovoc/c_2406 http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_2723 |
author |
Gaidet, Nicolas Caron, Alexandre Cappelle, Julien Cumming, Graeme S. Balança, Gilles Hammoumi, Saliha Cattoli, Giovanni Abolnik, Célia Servan de Almeida, Renata Gil, Patricia Fereidouni, Sasan R. Grosbois, Vladimir Tran, Annelise Mundava, Josephine Fofana, Bouba Ould El Mamy, Ahmed Bezeid Ndlovu, Mduduzi Mondain-Monval, J.Y. Triplet, Patrick Hagemeijer, Ward Karesh, William B. Newman, Scott Dodman, Tim |
author_facet |
Gaidet, Nicolas Caron, Alexandre Cappelle, Julien Cumming, Graeme S. Balança, Gilles Hammoumi, Saliha Cattoli, Giovanni Abolnik, Célia Servan de Almeida, Renata Gil, Patricia Fereidouni, Sasan R. Grosbois, Vladimir Tran, Annelise Mundava, Josephine Fofana, Bouba Ould El Mamy, Ahmed Bezeid Ndlovu, Mduduzi Mondain-Monval, J.Y. Triplet, Patrick Hagemeijer, Ward Karesh, William B. Newman, Scott Dodman, Tim |
author_sort |
Gaidet, Nicolas |
title |
Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa |
title_short |
Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa |
title_full |
Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa |
title_fullStr |
Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa |
title_full_unstemmed |
Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa |
title_sort |
understanding the ecological drivers of avian influenza virus infection in wildfowl : a continental-scale study across africa |
url |
http://agritrop.cirad.fr/563531/ http://agritrop.cirad.fr/563531/1/document_563531.pdf |
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dig-cirad-fr-5635312024-01-28T20:13:34Z http://agritrop.cirad.fr/563531/ http://agritrop.cirad.fr/563531/ Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa. Gaidet Nicolas, Caron Alexandre, Cappelle Julien, Cumming Graeme S., Balança Gilles, Hammoumi Saliha, Cattoli Giovanni, Abolnik Célia, Servan de Almeida Renata, Gil Patricia, Fereidouni Sasan R., Grosbois Vladimir, Tran Annelise, Mundava Josephine, Fofana Bouba, Ould El Mamy Ahmed Bezeid, Ndlovu Mduduzi, Mondain-Monval J.Y., Triplet Patrick, Hagemeijer Ward, Karesh William B., Newman Scott, Dodman Tim. 2012. Proceedings - Royal Society. Biological Sciences, 279 (1731) : 1131-1141.https://doi.org/10.1098/rspb.2011.1417 <https://doi.org/10.1098/rspb.2011.1417> Understanding the ecological drivers of avian influenza virus infection in wildfowl : A continental-scale study across Africa Gaidet, Nicolas Caron, Alexandre Cappelle, Julien Cumming, Graeme S. Balança, Gilles Hammoumi, Saliha Cattoli, Giovanni Abolnik, Célia Servan de Almeida, Renata Gil, Patricia Fereidouni, Sasan R. Grosbois, Vladimir Tran, Annelise Mundava, Josephine Fofana, Bouba Ould El Mamy, Ahmed Bezeid Ndlovu, Mduduzi Mondain-Monval, J.Y. Triplet, Patrick Hagemeijer, Ward Karesh, William B. Newman, Scott Dodman, Tim eng 2012 Proceedings - Royal Society. Biological Sciences L73 - Maladies des animaux L20 - Écologie animale Influenzavirus aviaire oiseau animal sauvage épidémiologie climat tropical facteur du milieu migration animale transmission des maladies vecteur de maladie Anas canard http://aims.fao.org/aos/agrovoc/c_9017 http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_24103 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_7973 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_32926 http://aims.fao.org/aos/agrovoc/c_2329 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_8786 http://aims.fao.org/aos/agrovoc/c_2406 Afrique Eurasie http://aims.fao.org/aos/agrovoc/c_165 http://aims.fao.org/aos/agrovoc/c_2723 Despite considerable effort for surveillance of wild birds for avian influenza viruses (AIVs), empirical investigations of ecological drivers of AIV prevalence in wild birds are still scarce. Here we used a continental-scale dataset, collected in tropical wetlands of 15 African countries, to test the relative roles of a range of ecological factors on patterns of AIV prevalence in wildfowl. Seasonal and geographical variations in prevalence were positively related to the local density of the wildfowl community and to the wintering period of Eurasian migratory birds in Africa. The predominant influence of wildfowl density with no influence of climatic conditions suggests, in contrast to temperate regions, a predominant role for inter-individual transmission rather than transmission via long-lived virus persisting in the environment. Higher prevalences were found in Anas species than in non-Anas species even when we account for differences in their foraging behaviour (primarily dabbling or not) or their geographical origin (Eurasian or Afro-tropical), suggesting the existence of intrinsic differences between wildfowl taxonomic groups in receptivity to infection. Birds were found infected as often in oropharyngeal as in cloacal samples, but rarely for both types of sample concurrently, indicating that both respiratory and digestive tracts may be important for AIV replication. Keywords: influenza A virus; pathogen transmission; disease ecology; wild birds; tropical; migration. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/563531/1/document_563531.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1098/rspb.2011.1417 10.1098/rspb.2011.1417 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=214294 info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2011.1417 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1098/rspb.2011.1417 |