INVESTIGADORES
DIAZ Luis Adrian
congresos y reuniones científicas
Título:
URBANIZATION INCREASE THE POPULATION ABUNDANCE OF EARED DOVE (ZENAIDA AURICULATA), AMPLIFYING HOST OF ST. LOUIS ENCEPHALITIS VIRUS (SLEV, FLAVIVIRUS)
Autor/es:
G. PERALTA; G. ALBRIEU-LLINÁS; M. BERANEK; S. PELUC; A. DIAZ
Lugar:
New Orleans
Reunión:
Congreso; 67th Anual Meeting American Society of Tropical Medicine and Hygiene; 2018
Institución organizadora:
American Society of Tropical Medicine and Hygiene
Resumen:
Human-ecosystem interactions have changed in the last 10.000 yearsproducing a greater environmental invasion and changes in the useof land cover for the exploitation of natural resources. Among theimmediate environmental effects we can refer to global climate change,habitat alteration, changes in the assembly of species and their humaninterchange that promote the emergence of zoonotic diseases. InArgentina, SLEV emerged as a human pathogen since 2005 when ahuman encephalitis outbreak occurred in Córdoba city. Eared Dove(Zenaida auriculata) and Culex quinquefasciatus mosquito are the mainhost and vector species, respectively. The main goal of this study was toevaluate the effect of urbanization over the abundance and production ofnests of Eared Dove. Using Landsat 8 satellite images of high-resolution,indexes related to urban landscape (i.e. indicators of built surface,vegetation and productivity, bodies of water, complexity and dominanceof landscape elements) were obtained. Córdoba city area was classifiedinto three levels of urbanization (high, medium and low). Abundance ofEared Dove and number of nests were recorded in fixed-width transectsin 30 randomized sites in the city (10 for each urbanization level). Thedistribution of the abundance was analyzed by a Generalized Linear Model(GLM) with negative binomial distribution of errors, log link function.The statistical significance (α= 0.05) of the terms was determinedthrough ANOVA. Built surface was the only tested variable that explainedsignificantly the abundance of Eared Dove. On the other hand, the variablenests of Eared Dove was significantly explained by built surface, highvegetation and distance between low grasses. Our study reveals a positiveeffect of urbanization over the abundance of Eared Dove. Eared Doverepresents the second most abundant bird species and produces 15 timesmore SLEV infectious mosquitoes than other bird species. The expansionand colonization of urban areas by Eared Dove can be one of the factorscausing the emergence of SLEV in Argentina.