macro-ecologia de dos linajes de rabia en chile (luis escobar)
TRANSCRIPT
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Macro-ecología de Dos Linajes de Rabia en Chile
Luis E. Escobar, A.Townsend Peterson, Myriam Favi,
Verónica Yung, Daniel J. Pons & Gonzalo Medina-Vogel
II Taller de Actualización de Rabia26 de Septiembre 2013
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Ecología de Rabia
Ecología: es el estudio científico de las interacciones que determinan la distribución y abundancia de organismos (Andrewartha, 1961)Ecología: es el estudio científico de las interacciones que determinan la distribución y abundancia de organismos (Andrewartha, 1961)
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“…lyssaviruses evolved in chiropters long before the emergence of carnivoran rabies…”
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“….similarity in the adaptive landscapes of recipient and donor host species… …could emerge faster and with higher probability.”
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“…absence of post-shift changes in RABV genes…”
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“ The greatest risk for rabid cats was associated with the first epizootic of raccoon rabies and the risk for rabies among cats was greatest when epizootics among raccoons were occurring.”
Epizootia en especie A puede causar brote en especie B.
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Ecología de Rabia = Distribución de Rabia:
Análisis Espacial
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Análisis basados en el sesgo de vigilancia.
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Análisis basados en el sesgo de vigilancia.
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Emerging Infectious Diseases • www.cdc.gov/eid • Vol. 19, No. 9, September 2013
Filogeografía?
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Rabia en Chilito
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~60,000 muestras1985-2011 Coordenadas para los
murciélagos positivos
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• Podemos caracterizar a gran escala los linajes de rabia en Chile?
• Hay a escala gruesa algún enlace geográfico y ecológico entre hospederos y virus?
• Hay diferencias en las firmas ecológicas entre virus y hospederos?
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Encuesta Veterinarios Vida Silvestre Chile
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BAM
Diagram
SOBERÓN, J. & PETERSON, A.T. (2005) Interpretation of Models of Fundamental Ecological Niches and Species´ Distributional Areas. Biodiversity Informatics, 2, 1-10.
Abiotic
BioticMovement
A ∩ B ∩M
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BAM
Diagram
SOBERÓN, J. & PETERSON, A.T. (2005) Interpretation of Models of Fundamental Ecological Niches and Species´ Distributional Areas. Biodiversity Informatics, 2, 1-10.
Abiotic
BioticMovement
A ∩ B ∩M
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Soberón J, Nakamura M. Niches and distributional areas: concepts, methods, and assumptions. Proc Natl Acad Sci USA. 2009;106:19644–50.
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Modelamiento
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“Grinnellian Ecological Niche”
Soil
Humid
ityTe
mp
erat
ure
Peterson A, (2011) Ecological niches and geographic distributions. Princeton: Princeton University.
Soil
Humid
ityTe
mp
erat
ure
Virus Murciélago
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Tadarida brasiliensis Lasiurus cinereus
ComúnRaro
Rabia AgV4 Rabia AgV6
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Sesgo de
muestreo
Vigilancia Pasiva
Densidad Positivos Muestras
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MAXENT
Background
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Comparación a detalle de la zona central
Variables Ambientales WorlClim
NDVI
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Resultados
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Nicho de Tadarida brasiliensis versus Nicho de Lasiurus cinereus
Nicho de Rabia AgV4 versus Nicho de Rabia AgV6
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Análisis de similitud
0 - 1
NO similar SI similar
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Es similar el uso de ambientes entre el
virus AgV4 y AgV6?
Distintos Similares
Rabia AgV4Rabia AgV6= Similares
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SimilitudTadarida brasiliensis Rabia AgV4
L. cinereus Rabia AgV6
Tadarida brasiliensisL. cinereus
Rabia AgV4Rabia AgV6
= Similares
= Similares
= Similares
= Similares
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Comunas sin envío de muestras de Tadarida
brasiliensis
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Conclusiones
• Se pueden generar modelos de nicho estadísticamente robustos para el sistema rabia-murciélago.
• Encontramos similitud de nichos entre hospederos y variantes virales.
• Los virus no necesariamente ocupan toda la distribución del hospedero.
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Rosely Gioia Martins Di Chiacchio; Fabíola Eloisa Setim Prioste; Ralph Eric Thijl Del Val Onoro Vanstreels; Eliana Reiko Matushima. 2013. Avaliação sorológica na população de capivaras (Hydrochoerus hydrochaeris) de vida livre presentes na região da Cantareira – zona norte de São Paulo - Sao Paulo, Brasil. WDA, São Paulo, Brasil
30% Anticuerpos Rabia
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Premio:Fuenzalida-Palacios
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