Journal
VECTOR-BORNE AND ZOONOTIC DISEASES
Volume 11, Issue 3, Pages 315-324Publisher
MARY ANN LIEBERT, INC
DOI: 10.1089/vbz.2009.0242
Keywords
Diversity; Habitat modification; Hantavirus; Oligoryzomys longicaudatus; Temporal fluctuations
Funding
- Centro de Ecologia Aplicada del Neuquen, Montana Tech University
- National Institutes of Health [P20RR16455-05]
- U.S. Centers for Disease Control and Prevention (Atlanta, GA) [US3/CCU813599, 282]
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Modifications of natural habitat in peridomestic rural areas could affect original rodent community composition, diversity, and evenness. In zoonoses such as hantavirus pulmonary syndrome, the presence of a diverse community can dilute the impact of the principal reservoir, reducing risk to humans. The goal of this study was to examine rodent community composition, abundance of Andes virus (ANDV) host (Oligoryzomys longicaudatus), ANDV prevalence, and temporal variability associated with rural peridomestic settings in Patagonia, Argentina. We trapped rodents in peridomestic settings and nearby sylvan areas for 2 years. The numerically dominant species differed between peridomestic and sylvan settings. O. longicaudatus was the most abundant species in peridomestic settings (>50% of individuals). Diversity and evenness in peridomestic settings fluctuated temporally, with an abrupt decline in evenness coinciding with peaks in ANDV prevalence. The probability of finding an ANDV-positive mouse in peridomestic settings was 2.44 times greater than in sylvan habitats. Changes in rodent communities in peridomestic settings may increase the probability for human exposure to ANDV because those settings promote the presence of O. longicaudatus with high ANDV antibody prevalence. High O. longicaudatus relative abundance in an unstable community associated with peridomestic settings may favor intraspecific contact, leading to a higher probability of virus transmission.
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