Range expansion of Oligoryzomys longicaudatus (Rodentia, Sigmodontinae) in Patagonian Chile, and first record of Hantavirus in the region

Belmar-Lucero, Sebastian; Godoy, Paula; Ferrés, Marcela; Víal, Pablo A.; Palma, R. Eduardo

doi:10.4067/s0716-078x2009000200008

Cited by 32 publications

(52 citation statements)

References 25 publications

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“…However, we suggest that the latter proposition should be revised. Oligoryzomys longicaudatus has a broad distribution in Chile, south of the Atacama Desert (about 27°S) downwards to the Patagonia including Tierra del Fuego (Chile and Argentina), and the Navarino Island (about 55°S; [86]. Besides the structuring found in O. longicaudatus , some mixing of populations is also true as shown in GENELAND analysis, that could be due to ecological (i.e., high vagility reported for this species), and historical effects (dispersal from potential refuge areas in southern Chile and Argentina) [87].…”

Section: Discussionmentioning

confidence: 99%

Glaciation Effects on the Phylogeographic Structure of Oligoryzomys longicaudatus (Rodentia: Sigmodontinae) in the Southern Andes

et al. 2012

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The long-tailed pygmy rice rat Oligoryzomys longicaudatus (Sigmodontinae), the major reservoir of Hantavirus in Chile and Patagonian Argentina, is widely distributed in the Mediterranean, Temperate and Patagonian Forests of Chile, as well as in adjacent areas in southern Argentina. We used molecular data to evaluate the effects of the last glacial event on the phylogeographic structure of this species. We examined if historical Pleistocene events had affected genetic variation and spatial distribution of this species along its distributional range. We sampled 223 individuals representing 47 localities along the species range, and sequenced the hypervariable domain I of the mtDNA control region. Aligned sequences were analyzed using haplotype network, Bayesian population structure and demographic analyses. Analysis of population structure and the haplotype network inferred three genetic clusters along the distribution of O. longicaudatus that mostly agreed with the three major ecogeographic regions in Chile: Mediterranean, Temperate Forests and Patagonian Forests. Bayesian Skyline Plots showed constant population sizes through time in all three clusters followed by an increase after and during the Last Glacial Maximum (LGM; between 26,000–13,000 years ago). Neutrality tests and the “g” parameter also suggest that populations of O. longicaudatus experienced demographic expansion across the species entire range. Past climate shifts have influenced population structure and lineage variation of O. longicaudatus. This species remained in refugia areas during Pleistocene times in southern Temperate Forests (and adjacent areas in Patagonia). From these refugia, O. longicaudatus experienced demographic expansions into Patagonian Forests and central Mediterranean Chile using glacial retreats.

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Section: Discussionmentioning

confidence: 99%

Glaciation Effects on the Phylogeographic Structure of Oligoryzomys longicaudatus (Rodentia: Sigmodontinae) in the Southern Andes

et al. 2012

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“…This may be related to the higher flexibility of MaxEnt algorithm in allowing for nonlinear relationships between response and predictor variables (Phillips et al 2006). Interestingly, this model also accurately predicted colilargos known distribution in Chile (Palma et al 2005;Belmar-Lucero et al 2009), even though we did not include any records for that country.…”

Section: Discussionmentioning

confidence: 60%

“…Infected O. longicaudatus have been captured along the Andes range in Neuquén, Río Negro, and Chubut provinces in Argentina but there are no records of ANDV eastwards (Cantoni et al 2001;Piudo et al 2005). In the Chilean side, infected O. longicaudatus have been captured all over its range along the Andes (Belmar-Lucero et al 2009). The distribution of this reservoir species indicate the maximum potential extent of HPS and in Argentine Patagonia, transmission zones matched the areas with the highest probability of colilargos presence.…”

Section: Discussionmentioning

confidence: 97%

“…We consider that the predictive map generated with MaxEnt algorithm was the best representation of O. longicaudatus distribution for a number of reasons: (a) it predicted the range expansion of this species as far as 55°S that was confirmed by Belmar-Lucero et al (2009) through genetic studies; (b) it correctly predicted very low or null occurrence probabilities northwards 32°S, while logistic model predicted some very high probability patches in this area, (c) it predicted moderate occurrence probabilities in areas where training points density was low, but the colilargo is known to occur (such as the Atlantic coast and central plateaus), whereas logistic model yielded low presence probability for those areas, and (d) it predicted O. longicaudatus presence in western Santa Cruz province whereas the southernmost predicted presence of the logistic model was southern Chubut province. The better performance of MaxEnt over the logistic model was evident in both threshold-dependent and -independent measures and in the resulting predictive map.…”

Section: Discussionmentioning

confidence: 99%

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Modeling Potential Distribution of Oligoryzomys longicaudatus, the Andes Virus (Genus: Hantavirus) Reservoir, in Argentina

et al. 2011

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We constructed a model to predict the potential distribution of Oligoryzomys longicaudatus, the reservoir of Andes virus (Genus: Hantavirus), in Argentina. We developed an extensive database of occurrence records from published studies and our own surveys and compared two methods to model the probability of O. longicaudatus presence; logistic regression and MaxEnt algorithm. The environmental variables used were tree, grass and bare soil cover from MODIS imagery and, altitude and 19 bioclimatic variables from WorldClim database. The models performances were evaluated and compared both by threshold dependent and independent measures. The best models included tree and grass cover, mean diurnal temperature range, and precipitation of the warmest and coldest seasons. The potential distribution maps for O. longicaudatus predicted the highest occurrence probabilities along the Andes range, from 32°S and narrowing southwards. They also predicted high probabilities for the south-central area of Argentina, reaching the Atlantic coast. The Hantavirus Pulmonary Syndrome cases coincided with mean occurrence probabilities of 95 and 77% for logistic and MaxEnt models, respectively. HPS transmission zones in Argentine Patagonia matched the areas with the highest probability of presence. Therefore, colilargos presence probability may provide an approximate risk of transmission and act as an early tool to guide control and prevention plans.

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“…A pesar de nuestros resultados, O. longicaudatus es considerada una especie de alta vagilidad, con áreas de acción extensas que pueden alcanzar los 4800 m 2 (Murúa et al 1986;Belmar-Lucero et al 2009;Andreo 2012). Estudios realizados en Chile también describen mayores áreas de acción relativas para esta especie (Agüero and Simonetti 1988;Muñoz-Pedreros et al 1990 La influencia de la dispersión de animales reservorio ha demostrado ser más importante en la transmisión de enfermedades cuando la destrucción, modificación o alteración del ambiente original conlleva un alto porcentaje de pérdida de ambiente original y una baja correlación con el ambiente adyacente (Su et al 2009;Su 2011).…”

Section: D��unclassified

Movimientos de roedores intra- e inter-ambiente y riesgo de exposición al Hantavirus "Andes" en Patagonia norte, Argentina

Monteverde¹,

Hodara

2017

Ecol. Austral

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RESUMEN.Se estudiaron algunos aspectos de la ecología espacial de tres especies de roedores sigmodontinos (Oligoryzomys longicaudatus, Abrothrix olivacea y Abrothrix hirta) en el Paraje El Contra del Parque Nacional Lanín (Provincia de Neuquén, Argentina). Los resultados se analizaron en el marco del riesgo de exposición humana al Hantavirus "Andes", agente causal del Síndrome Pulmonar por Hantavirus. El trabajo se realizó en dos tipos de ambiente: silvestre y doméstico. Los roedores fueron capturados mensualmente con la metodología de captura-marcado-recaptura. De esta manera se estimaron y compararon los movimientos dentro y entre ambos ambientes y los tamaños de áreas de acción. Oligoryzomys longicaudatus, principal reservorio del Hantavirus "Andes" en Patagonia, presentó el mayor número de capturas en ambos ambientes y más de lo esperado por azar dentro de los ambientes domésticos. Además, mostró las áreas de acción con menor tamaño promedio y movimientos intra-ambiente estadísticamente significativos. Los ambientes domésticos rurales resultaron ser potencialmente los más riesgosos en términos de exposición y transmisión de Hantavirus a humanos. Como resultado de las capturas y movimientos dispersivos de O. longicaudatus, se discuten otras contribuciones de este trabajo a la salud humana.[Palabras clave: dispersión, ambientes domésticos y silvestres, Oligoryzomys longicaudatus, Parque Nacional Lanín, sigmodontinae, uso de hábitat, zoonosis]ABSTRACT. Intra-and inter-environment movements of rodents and risk of exposure to "Andes" Hantavirus in northern Patagonia, Argentina. Some aspects of the spatial ecology of three species of sigmodontine rodents (Oligoryzomys longicaudatus, Abrothrix olivacea and Abrothrix hirta) were studied in the Paraje El Contra, Lanín National Park (Province of Neuquén, Argentina), and the results were then analyzed in relation to the risk of human exposure to "Andes" Hantavirus, causative agent of Hantavirus Pulmonary Syndrome. The work was conducted in two environment types (sylvan and domestic), where mice were monthly captured using capture-mark-recapture methodology. Thus, movements within and between environments and home ranges sizes were estimated and compared. Oligoryzomys longicaudatus, principal reservoir of "Andes" Hantavirus in Patagonia, showed the largest number of captures in both environments and more captures than those expected by random within domestic environments. Moreover, it showed the lowest average home range sizes, and statistically significant intra environment movements. Rural domestic environments resulted to be the riskiest in terms of exposure and transmission of Hantavirus to humans. Other contributions of this work to human health are discussed as a result of captures and dispersal movements of O. longicaudatus.

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Range expansion of Oligoryzomys longicaudatus (Rodentia, Sigmodontinae) in Patagonian Chile, and first record of Hantavirus in the region

Cited by 32 publications

References 25 publications

Glaciation Effects on the Phylogeographic Structure of Oligoryzomys longicaudatus (Rodentia: Sigmodontinae) in the Southern Andes

Glaciation Effects on the Phylogeographic Structure of Oligoryzomys longicaudatus (Rodentia: Sigmodontinae) in the Southern Andes

Modeling Potential Distribution of Oligoryzomys longicaudatus, the Andes Virus (Genus: Hantavirus) Reservoir, in Argentina

Movimientos de roedores intra- e inter-ambiente y riesgo de exposición al Hantavirus "Andes" en Patagonia norte, Argentina

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