INVESTIGADORES
PARDIÑAS ulises francisco J.
artículos
Título:
SPATIAL DISTRIBUTION MODEL OF A HANTAVIRUS
Autor/es:
CARBAJO, A.; PARDIÑAS, U.F.J.
Revista:
JOURNAL OF MAMMALOGY
Editorial:
American Society of Mammalogist - Allen Press
Referencias:
Lugar: Lawrence; Año: 2007 vol. 88 p. 1555 - 1558
ISSN:
0022-2372
Resumen:
A 1st step in understanding the ecology of rodents as reservoirs and their relation with the disease they transmit is
to determine their geographical distribution. This distribution can be modeled as a function of environmental
variables. We georeferenced an extensive database of records of the hantavirus reservoir Oligoryzomys
longicaudatus (Cricetidae: Sigmodontinae) in Argentina and used generalized linear models to model the
probability of the presence of this reservoir as a function of environmental variables. The variables used in the
multiple logistic regression were temperature, precipitation, evapotranspiration, altitude, tree cover, grass cover,
bare soil cover, and distance to rivers, to water bodies, and to roads; 2 phytogeographic classifications also were
included. Spatial autocorrelation was considered in the model by including a spatial dependence covariate. The
best model included temperature and precipitation as explanatory variables. External validation showed that the
model without the space covariate correctly classified 95% of the sites with the rodent and 70% of the sites
without it; the model including the spatial term correctly classified 100% of the sites with the rodent and 70% of
the sites without it. A secondary model included days with frost and percent cover by bare soil as explanatory
variables. O. longicaudatus was recorded in 97% of sites in the High AndeanSubantarctic regions, 65% of sites
in the MonteEspinalPatagonian regions, and 0% of sites in the Pampean region.Oligoryzomys
longicaudatus (Cricetidae: Sigmodontinae) in Argentina and used generalized linear models to model the
probability of the presence of this reservoir as a function of environmental variables. The variables used in the
multiple logistic regression were temperature, precipitation, evapotranspiration, altitude, tree cover, grass cover,
bare soil cover, and distance to rivers, to water bodies, and to roads; 2 phytogeographic classifications also were
included. Spatial autocorrelation was considered in the model by including a spatial dependence covariate. The
best model included temperature and precipitation as explanatory variables. External validation showed that the
model without the space covariate correctly classified 95% of the sites with the rodent and 70% of the sites
without it; the model including the spatial term correctly classified 100% of the sites with the rodent and 70% of
the sites without it. A secondary model included days with frost and percent cover by bare soil as explanatory
variables. O. longicaudatus was recorded in 97% of sites in the High AndeanSubantarctic regions, 65% of sites
in the MonteEspinalPatagonian regions, and 0% of sites in the Pampean region.(Cricetidae: Sigmodontinae) in Argentina and used generalized linear models to model the
probability of the presence of this reservoir as a function of environmental variables. The variables used in the
multiple logistic regression were temperature, precipitation, evapotranspiration, altitude, tree cover, grass cover,
bare soil cover, and distance to rivers, to water bodies, and to roads; 2 phytogeographic classifications also were
included. Spatial autocorrelation was considered in the model by including a spatial dependence covariate. The
best model included temperature and precipitation as explanatory variables. External validation showed that the
model without the space covariate correctly classified 95% of the sites with the rodent and 70% of the sites
without it; the model including the spatial term correctly classified 100% of the sites with the rodent and 70% of
the sites without it. A secondary model included days with frost and percent cover by bare soil as explanatory
variables. O. longicaudatus was recorded in 97% of sites in the High AndeanSubantarctic regions, 65% of sites
in the MonteEspinalPatagonian regions, and 0% of sites in the Pampean region.O. longicaudatus was recorded in 97% of sites in the High AndeanSubantarctic regions, 65% of sites
in the MonteEspinalPatagonian regions, and 0% of sites in the Pampean region.