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Journal of Wildlife Diseases, 42(4), 2006, pp. 819-824
© Wildlife Disease Association  2006
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SHORT COMMUNICATION

Changes in Sin Nombre Virus Antibody Prevalence in Deer Mice Across Seasons: The Interaction Between Habitat, Sex, and Infection in Deer Mice

Jessica M. C. Pearce-Duvet1,3, Stephen C. St. Jeor2, John D. Boone2 and M. Denise Dearing1

1 Biology Department, University of Utah, 257 South 1400 East, Salt Lake City, UT 84112;
2 Department of Microbiology, School of Medicine/320, University of Nevada, Reno, NV 89557
3 Corresponding author (email: pearce{at}biology.utah.edu)

ABSTRACT:   We examined the impact of season and habitat on Sin Nombre virus (SNV) seroprevalence in deer mice (Peromyscus maniculatus) in Utah’s Great Basin Desert from May 2002 through summer 2003. Low mouse captures in 2002 limited analysis for that year. In two seasons during 2003, mouse density and sagebrush cover were positively linked (spring: r = 0.8, P = 0.01; summer: r = 0.8, P = 0.04). In the spring, seroprevalence was negatively correlated with density (r = –0.9, P< 0.01); male and female antibody prevalence did not differ; and scarring was unrelated to antibody status. In the summer, density and antibody prevalence were unrelated; male seroprevalence was higher ({chi}2 = 3.6, P = 0.05); and seropositive mice had more scars (t = 2.5, P = 0.02). We speculate nesting behavior could maintain SNV over the winter, whereas summer territoriality could be responsible for transmission.
  Key words:  Deer mouse, frequency-dependent transmission, habitat quality, Peromyscus maniculatus, seasonality, Sin Nombre virus.






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