Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus)

Mostrar todas las versiones(2)

Abstract:  Anthropogenic changes alter the structure and functionality of natural systems, impacting on their biodiversity. In Argentina, the Pampean Region is almost completely transformed into an agricultural mosaic, with impoverished biological communities dominated by a few well ad...

Descripción completa

Detalles Bibliográficos
Autores principales: Mansilla , A P, Grande , J M, Diaz , A
Formato: Artículo revista
Publicado: Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología 2021
Materias:
St. Louis encephalitis virus
West Nile virus
Arbovirus
agroecosystems
hosts
virus St. Louis encephalitis
virus West Nile
agroecosistemas
hospedadores
.
Acceso en línea:https://revistas.unc.edu.ar/index.php/med/article/view/35034
Aporte de:
Revista de la Facultad de Ciencias Médicas de Córdoba de Universidad Nacional de Córdoba
id I10-R327-article-35034
record_format ojs
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-327
container_title_str Revista de la Facultad de Ciencias Médicas de Córdoba
format Artículo revista
topic St. Louis encephalitis virus
West Nile virus
Arbovirus
agroecosystems
hosts
virus St. Louis encephalitis
virus West Nile
Arbovirus
agroecosistemas
hospedadores
.
spellingShingle St. Louis encephalitis virus
West Nile virus
Arbovirus
agroecosystems
hosts
virus St. Louis encephalitis
virus West Nile
Arbovirus
agroecosistemas
hospedadores
.
Mansilla , A P
Grande , J M
Diaz , A
Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus)
topic_facet St. Louis encephalitis virus
West Nile virus
Arbovirus
agroecosystems
hosts
virus St. Louis encephalitis
virus West Nile
Arbovirus
agroecosistemas
hospedadores
.
author Mansilla , A P
Grande , J M
Diaz , A
author_facet Mansilla , A P
Grande , J M
Diaz , A
author_sort Mansilla , A P
title Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus)
title_short Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus)
title_full Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus)
title_fullStr Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus)
title_full_unstemmed Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus)
title_sort agricultural area increases the infection risk of free ranging birds to st. louis encephalitis and west nile viruses (flavivirus)
description Abstract:  Anthropogenic changes alter the structure and functionality of natural systems, impacting on their biodiversity. In Argentina, the Pampean Region is almost completely transformed into an agricultural mosaic, with impoverished biological communities dominated by a few well adapted species, which could promote the activity of arboviruses such as St. Louis encephalitis (SLEV) and West Nile (WNV). The aim of this work was to determine the exposure to SLEV and WNV of free ranging birds present in agroecosystems of La Pampa province and to evaluate the environmental and biological factors potentially associated. Birds were collected and bled in 12 sampling sites located in agroecosystems during the late summer and early autumn in 2017, 2018 and 2019. Antibodies against both viruses were detected using the Viral Neutralization Technique. The association between infection risk and environmental and biological factors was analyzed through Generalized Linear Mixed Models (GLMM), considering the sampling year as a random factor. Model selection was carried out through the Akaike Information Criterion (AIC). Overall, we found neutralizing antibodies against to SLEV in 60 out of 1019 samples (5,8%), while the WNV seroprevalence was 2,1% (21/1019). The best model that explained the variation of infection risk to SLEV in an avian host included agricultural area (wi = 0.44) with a positive effect. For WNV, the best model included the variables agricultural area + distance to the nearest body of water (wi = 0.36), having the first variable a positive and the second a negative effect. The area covered by trees had a strong negative association with the agricultural area. Our results suggest that agricultural areas increase the infection risk for an avian host by SLE and WN viruses, while tree cover would decrease the infection risk, probably through the dilution effect of host and vector communities.
publisher Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología
publishDate 2021
url https://revistas.unc.edu.ar/index.php/med/article/view/35034
work_keys_str_mv AT mansillaap agriculturalareaincreasestheinfectionriskoffreerangingbirdstostlouisencephalitisandwestnilevirusesflavivirus
AT grandejm agriculturalareaincreasestheinfectionriskoffreerangingbirdstostlouisencephalitisandwestnilevirusesflavivirus
AT diaza agriculturalareaincreasestheinfectionriskoffreerangingbirdstostlouisencephalitisandwestnilevirusesflavivirus
AT mansillaap riesgodeinfecciondehospedadoresaviaresporlosvirusstlouisencephalitisywestnileenagroecosistemasdelapampa
AT grandejm riesgodeinfecciondehospedadoresaviaresporlosvirusstlouisencephalitisywestnileenagroecosistemasdelapampa
AT diaza riesgodeinfecciondehospedadoresaviaresporlosvirusstlouisencephalitisywestnileenagroecosistemasdelapampa
AT mansillaap a
AT grandejm a
AT diaza a
first_indexed 2024-09-03T21:03:01Z
last_indexed 2024-09-03T21:03:01Z
_version_ 1809210284664946688
spelling I10-R327-article-350342024-04-15T16:19:09Z Agricultural area increases the infection risk of free ranging birds to St. Louis encephalitis and West Nile viruses (Flavivirus) Riesgo de infección de hospedadores aviares por los virus St. Louis encephalitis y West Nile en agroecosistemas de La Pampa A Mansilla , A P Grande , J M Diaz , A St. Louis encephalitis virus West Nile virus Arbovirus agroecosystems hosts virus St. Louis encephalitis virus West Nile Arbovirus agroecosistemas hospedadores . Abstract:  Anthropogenic changes alter the structure and functionality of natural systems, impacting on their biodiversity. In Argentina, the Pampean Region is almost completely transformed into an agricultural mosaic, with impoverished biological communities dominated by a few well adapted species, which could promote the activity of arboviruses such as St. Louis encephalitis (SLEV) and West Nile (WNV). The aim of this work was to determine the exposure to SLEV and WNV of free ranging birds present in agroecosystems of La Pampa province and to evaluate the environmental and biological factors potentially associated. Birds were collected and bled in 12 sampling sites located in agroecosystems during the late summer and early autumn in 2017, 2018 and 2019. Antibodies against both viruses were detected using the Viral Neutralization Technique. The association between infection risk and environmental and biological factors was analyzed through Generalized Linear Mixed Models (GLMM), considering the sampling year as a random factor. Model selection was carried out through the Akaike Information Criterion (AIC). Overall, we found neutralizing antibodies against to SLEV in 60 out of 1019 samples (5,8%), while the WNV seroprevalence was 2,1% (21/1019). The best model that explained the variation of infection risk to SLEV in an avian host included agricultural area (wi = 0.44) with a positive effect. For WNV, the best model included the variables agricultural area + distance to the nearest body of water (wi = 0.36), having the first variable a positive and the second a negative effect. The area covered by trees had a strong negative association with the agricultural area. Our results suggest that agricultural areas increase the infection risk for an avian host by SLE and WN viruses, while tree cover would decrease the infection risk, probably through the dilution effect of host and vector communities. Resumen:  Los cambios antrópicos alteran la estructura y funcionamiento de los sistemas naturales, impactando consecuentemente sobre la biodiversidad del lugar. En nuestro país, la Región Pampeana se encuentra casi completamente transformada en un mosaico agrícola, con comunidades biológicas empobrecidas y dominadas por unas pocas especies altamente adaptables, las cuales podrían promover la actividad de arbovirus como St. Louis encephalitis (SLE) y West Nile (WN). El objetivo de este trabajo fue determinar la exposición a los virus SLE y WN de diversas especies de aves silvestres presentes en los agroecosistemas de la provincia de La Pampa y evaluar los factores ambientales y biológicos potencialmente asociados. Realizamos capturas de aves en 12 agroecosistemas durante el verano tardío y principios del otoño entre los años 2017 y 2019. Se realizó la detección de anticuerpos contra ambos virus mediante la Técnica de Neutralización Viral. La asociación entre los factores ambientales y biológicos y el riesgo de infección para un hospedador aviar fue analizada a través de Modelos Lineales Generalizados Mixtos (GLMM), contemplando el año de muestreo como factor aleatorio. La comparación y selección de modelos se realizó a través del Criterio de Información de Akaike (AIC). Se capturaron un total de 1019 individuos, determinando una seroprevalencia general para el virus SLE del 5,8% (60/1019) y para el virus WN del 2,1% (21/1019). El modelo que mejor explicó la variación en el riesgo de infección para un hospedador aviar por el virus SLE fue el que contuvo la variable área agrícola (wi=0,44), influyendo de manera positiva. Para el virus WN, el mejor modelo fue el que contuvo la variable área agrícola + distancia al cuerpo de agua más cercano (wi=0,36), influyendo esta última variable de manera negativa. La cobertura arbórea también tuvo una fuerte asociación pero en un sentido negativo y complementario con el área agrícola. Nuestros resultados sugieren que las áreas agrícolas pueden incrementar el riesgo de infección de las aves silvestres por los virus SLE y WN mientras que la cobertura arbórea disminuiría el riesgo de infección probablemente a través del efecto de dilución de las comunidades de hospedadores y vectores. . Universidad Nacional Córdoba. Facultad de Ciencias Médicas. Secretaria de Ciencia y Tecnología 2021-10-12 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion texto texto texto https://revistas.unc.edu.ar/index.php/med/article/view/35034 Revista de la Facultad de Ciencias Médicas de Córdoba.; Vol. 78 No. Suplemento (2021): Suplemento JIC XXII Revista de la Facultad de Ciencias Médicas de Córdoba; Vol. 78 Núm. Suplemento (2021): Suplemento JIC XXII Revista da Faculdade de Ciências Médicas de Córdoba; v. 78 n. Suplemento (2021): Suplemento JIC XXII 1853-0605 0014-6722 http://creativecommons.org/licenses/by-nc/4.0

Ejemplares similares