Microhabitat Characteristics of Akodon Montensis, a Reservoir for Hantavirus, and Hantaviral Seroprevalence in an Atlantic Forest Site in Eastern Paraguay


Klowden, Marc J.


Hantaviruses may cause serious disease when transmitted to humans by their rodent hosts. Since their emergence in the Americas in 1993, there have been extensive efforts to understand the role of environmental factors on the presence of these viruses in their host rodent populations. HPS outbreaks have been linked to precipitation, but climatic factors alone have not been sufficient to predict the spatial-temporal dynamics of the environment-reservoir-virus system. Using a series of mark-recapture sampling sites located at the Mbaracayú Biosphere Reserve, an Atlantic Forest site in eastern Paraguay, we investigated the hypothesis that microhabitat might also influence the prevalence of Jaborá hantavirus within populations of its reservoir species, Akodon montensis. Seven trapping sessions were conducted during 2005-2006 at four sites chosen to capture variable microhabitat conditions within the study site. Analysis of microhabitat preferences showed that A. montensis preferred areas with little forest overstory and denser vegetation cover on and near the ground. Moreover, there was a significant difference in the microhabitat occupied by antibody-positive vs. antibody-negative rodents, indicating that microhabitats with greater overstory cover may promote transmission and maintenance of hantavirus in A. montensis.


Mathematics and Statistics

Keywords and Phrases

Hantavirus; Akoden montensis; microhabitat; Atlantic forest; Paraguay

International Standard Serial Number (ISSN)


Document Type

Article - Journal

Document Version


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© 2009 Wiley-Blackwell, All rights reserved.

Publication Date

01 Jan 2009