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    Distribution and ecology of squirrels (Rodentia: Sciuridae) in Paraguay, with first country records of Sciurus ignitus

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    Issue Date
    2015-03
    Author
    Timm, Robert M.
    Cartes, José L.
    Mirtha, Ruiz-Díaz
    Zárate, Rodrigo
    Pine, Ronald H.
    Publisher
    Southwestern Association of Naturalists
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    We document for the first time that Sciurus ignitus, a medium-sized agouti-patterned squirrel with white venter, occurs in Paraguay, being found in the northern Chaco–Pantanal region of the country, where the borders of Paraguay, Bolivia, and Brazil come together. Sciurus urucumus, the only species of squirrel previously known with certainty to range into Paraguay, occurs in the Chiquitano Forest of the northeastern Paraguayan Chaco. We provide details of the Paraguayan habitats for the known specimens of both species. At present, we know of no localities where the two species co-occur. We critically evaluate some of the morphological characters used previously to characterize S. ignitus. Interviews with local hunters, including Aché indigenous ones, coupled with an earlier, published account by A. de W. Bertoni (1939), indicate that the squirrel Sciurus aestuans also occurs in eastern Paraguay’s Departamento Alto Paraná, although no specimens are now available from the country. RESUMEN—Documentamos por primera vez que Sciurus ignitus, una ardilla de tamaño mediano con pelo de patrón agutí y con el vientre blanco, ocurre en Paraguay, en la región Chaco–Pantanal del norte del país, donde se unen las fronteras de Paraguay, Bolivia y Brasil. Sciurus urucumus, la única especie de ardilla cuyo rango se conocía previamente con certeza de incluir Paraguay, se encuentra en el Bosque Chiquitano del noreste del Chaco paraguayo. Proveemos detalles sobre los hábitats paraguayos de los especímenes de ambas especies. En el presente, no conocemos de ninguna localidad donde las dos especies concurren. Evaluamos críticamente algunas características morfológicas usadas previamente para caracterizar S. ignitus. Entrevistas con cazadores locales, incluyendo indígenas Aché, en conjunto con un reporte publicado anteriormente por A. de W. Bertoni (1939), indican que la ardilla S. aestuans también ocurre en el este de Paraguay, en el Departamento Alto Paraná, aunque ningún espécimen se conoce aún del país.
    URI
    http://hdl.handle.net/1808/19158
    Collections
    • Ecology and Evolutionary Biology Scholarly Works [1376]
    Citation
    Timm, R. M. J. L. Cartes, M. Ruiz-Díaz, R. Zárate, and R. H. Pine. 2015. Distribution and ecology of squirrels (Rodentia: Sciuridae) in Paraguay, with first country records for Sciurus ignitus. Southwestern Naturalist 60(1):121-127.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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