RELATIONSHIP OF ECOLOGICAL VARIABLES TO SIN NOMBRE VIRUS ANTIBODY SEROPREVALENCE IN POPULATIONS OF DEER MICE
2000
Abstract Because recent studies have not demonstrated a strong relationship between rodent density and Sin Nombre virus (SNV) seroprevalence, there is speculation that seroprevalence may be related to other factors, including habitat quality and food availability. We evaluated densities of deer mice (Peromyscus maniculatus), plant cover and biomass, and terrestrial arthropod biomass at 2 sites in the southwestern United States to identify factors that may affect the seroprevalence rate of SNV within a rodent population. Seroprevalence differed significantly between years. Although interaction of deer-mouse density, plant cover and biomass, and arthropod biomass was not a strong predictor of seroprevalence (R2 = 0.64, P = 0.04), we observed a significant contribution to a repeated-measures model by deer-mouse density (P = 0.02). Our data suggest that as rodent density increases, so does the seroprevalence rate within that population. Although not significantly correlated, we observed the lowest levels of a...
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