Ecological Factors Driving Avian Influenza Virus Dynamics in Spanish Wetland Ecosystems
Visualitza/Obre
Autor/a
Pérez-Ramírez, Elisa
Acevedo, Pelayo
Gerrikagoitia, Xeider
Busquets, Núria
Díaz-Sánchez, Sandra
Álvarez, Vega
Barral, Marta
Höfle, Ursula
Data de publicació
2012-11-12ISSN
1932-6203
Resum
Studies exploring the ecological interactions between avian influenza viruses (AIV), natural hosts and the environment are
scarce. Most work has focused on viral survival and transmission under laboratory conditions and through mathematical
modelling. However, more integrated studies performed under field conditions are required to validate these results. In this
study, we combined information on bird community, environmental factors and viral epidemiology to assess the
contribution of biotic and abiotic factors in the occurrence of low pathogenic AIV in Spanish wetlands. For that purpose,
seven locations in five different wetlands were studied during two years (2007–2009), including seven sampling visits by
location. In each survey, fresh faeces (n = 4578) of wild birds and water samples were collected for viral detection. Also, the
vegetation structure, water physical properties of wetlands, climatic conditions and wild bird community composition were
determined. An overall AIV prevalence of 1.7%60.4 was detected in faecal samples with important fluctuations among
seasons and locations. Twenty-six AIV were isolated from the 78 RRT-PCR positive samples and eight different
haemagglutinines and five neuraminidases were identified, being the combination H3N8 the most frequent. Variation
partitioning procedures identified the combination of space and time variables as the most important pure factor –
independently to other factors – explaining the variation in AIV prevalence (36.8%), followed by meteorological factor
(21.5%) and wild bird community composition/vegetation structure (21.1%). These results contribute to the understanding
of AIV ecological drivers in Spanish ecosystems and provide useful guidelines for AIV risk assessment identifying potential
hotspots of AIV activity.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
619 - Veterinària
Pàgines
10
Publicat per
Public Library of Science
Publicat a
PLoS ONE
Citació
Pérez‐Ramírez, Elisa, Pelayo Acevedo, Alberto Allepuz, Xeider Gerrikagoitia, Anna Alba, Núria Busquets, Sandra Díaz-Sánchez, et al. 2012. “Ecological Factors Driving Avian Influenza Virus Dynamics in Spanish Wetland Ecosystems.” PloS One 7 (11): e46418. https://doi.org/10.1371/journal.pone.0046418.
Número de l'acord de la subvenció
INIA/Programa nacional de recursos y tecnologías agroalimentarias/FAU2006-00019-C03/ES/Epidemiología de la influenza aviar. Caracterización molecular. Estudio de la interrelación entre reservorios silvestre/
EC/FP7/246535/EU/Post-doctoral programme Beatriu de Pinos/BP
Programa
Sanitat Animal
Aquest element apareix en la col·lecció o col·leccions següent(s)
- ARTICLES CIENTÍFICS [2661]
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