Habitat utilization of two muroid species in relation to population outbreaks in southern temperate forests of Chile

González, Luz Angélica Muñoz; Murúa, Roberto; Jofre, C

doi:10.4067/s0716-078x2000000300012

Cited by 28 publications

(22 citation statements)

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“…We recorded annual and interannual differences in population density both in forest and brush habitats, which is consistent with other published studies in Argentina (Guthmann et al, 1997;Calderó n et al, 1999;Cantoni et al, 2001;Piudo et al, 2005) and Chile (Murú a et al, 1996;Murú a and Briones, 2005). Similarly, O. longicaudatus is most commonly found in brush and forest habitats, also consonant with other published reports (Pearson and Pearson, 1982;Pearson, 1983;Kelt et al, 1994;Monjeau et al, 1998;González et al, 2000;Pardiñas et al, 2000;Cantoni et al, 2001;Pearson, 2002;Lozada et al, 2000;Pardiñas et al, 2003;Piudo et al, 2005;Mills et al, 2007) about strong habitat selectivity of this species by brush and forest habitats. Considering that environmental variables can affect the population abundance of O. longicaudatus, it is valid to suppose that the observed abundance differences among habitat types and seasons could be associated with those environmental differences.…”

Section: Discussionsupporting

confidence: 93%

“…This rodent species has been captured in disturbed habitats (cultivated field borders and peridomestic settings), as well as in primary pastures, brushes, and forest areas in Argentina (Pearson, 1983(Pearson, , 2002Monjeau et al, 1998;Pardiñas et al, 2000Pardiñas et al, , 2003Piudo et al, 2005). Host population and pathogen prevalence may vary on local scales (Mills, 1999) and studies on O. longicaudatus habitat use in Chile indicate a substantial difference among habitat types (Murú a and González, 1982;González et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Temporal and Spatial Host Abundance and Prevalence of Andes Hantavirus in Southern Argentina

et al. 2010

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Andes virus (AND) is a hantavirus hosted by the sigmodontine rodent Oligoryzomys longicaudatus in southern Argentina, where it is responsible for most cases of hantavirus pulmonary syndrome (HPS). Our study provides data about the spatial variation in abundance of the rodent host of AND hantavirus. We report results of a longitudinal study performed in a locality of the Andean region of Chubut Province. From November 2003 (spring) to July 2006 (winter), O. longicaudatus was the most common species captured (63%) and it showed significant differences in abundance among habitats and seasons. Most antibody-positive rodents were O. longicaudatus (9.2%), followed by A. longipilis (3.6%) and A. olivaceus (1.5%). The highest number of antibody-positive animals was observed for males that belonged to the heaviest mass classes. Antibody-positive O. longicaudatus were more abundant in brush habitats. We found low richness of rodents and abundance of O. longicaudatus in areas affected by anthropogenic activity. The infection seems to be regionally persistent, but the risk to humans in a landscape would be localized. To develop accurate models for predicting HPS outbreaks, further research is needed to characterize rodent movement patterns across the landscape.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Temporal and Spatial Host Abundance and Prevalence of Andes Hantavirus in Southern Argentina

et al. 2010

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“…In Neuquén, O. longicaudatus is found in peridomestic settings in all ecoregions except for the high Andean steppe (Piudo et al 2005). O. longicaudatus is highly mobile (Kelt et al 1994, Murua et al 1996, with home ranges that are, in many cases, twice the size of those of sympatric species such as A. olivaceus (González et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Rodent Community Structure and Andes Virus Infection in Sylvan and Peridomestic Habitats in Northwestern Patagonia, Argentina

Piudo¹,

Monteverde²,

Walker

et al. 2011

Vector-Borne and Zoonotic Diseases

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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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“…En este contexto de las zoonosis, durante las dos últimas décadas ha sobresalido la especie Oligoryzomys longicaudatus (Bennett 1832) perteneciente a la familia Cricetidae, por ser el transmisor y reservorio de Hantavirus en Chile (Medina et al, 2009). Este roedor silvestre se distribuye desde la III a la XII región (Mann 1978), en donde debido a su gran vagilidad habita diversos ambientes que posean una fuente de agua cercana (Figueroa et al 2001), y le entreguen la protección necesaria contra sus depredadores (Murúa y González 1982;González et al 2000).…”

Section: Introductionunclassified

“…Estos cambios favorecen el desarrollo de especies vegetales como Chusquea spp, que ha pasado a ser un componente importante del nuevo paisaje, en sectores donde el bosque ha sido intervenido para la extracción de madera (González et al 2000). Además Chusquea esta especie influye sobre el tamaño que puede alcanzar la población de Oligoryzomys longicaudatus (Meserva et al 1999).…”

Section: Introductionunclassified

Nuevo desafío en Salud Pública: Presencia de reservorios de Hanta, Oligoryzomys longicaudatus y Rattus spp., en aéreas de borde en praderas del sur de Chile.

Murúa

Barrera²

2015

Sust. Agric. Food Env. Res.

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Habitat utilization of two muroid species in relation to population outbreaks in southern temperate forests of Chile

Cited by 28 publications

References 0 publications

Temporal and Spatial Host Abundance and Prevalence of Andes Hantavirus in Southern Argentina

Temporal and Spatial Host Abundance and Prevalence of Andes Hantavirus in Southern Argentina

Rodent Community Structure and Andes Virus Infection in Sylvan and Peridomestic Habitats in Northwestern Patagonia, Argentina

Nuevo desafío en Salud Pública: Presencia de reservorios de Hanta, Oligoryzomys longicaudatus y Rattus spp., en aéreas de borde en praderas del sur de Chile.

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