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标题：Current status of the plains pocket mouse (Perognathus flavescens) in eastern Nebraska
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作者：Geluso, Keith ; Wright, Greg D.
期刊名称：Western North American Naturalist
印刷版ISSN：1527-0904
出版年度：2012
卷号：72
期号：4
页码：11
出版社：Brigham Young University
摘要：Distribution of the plains pocket mouse (Perognathus flavescens) overlaps tallgrass prairies in northeastern parts of the species’ range in the central United States. Distribution and abundance of the plains pocket mouse appears negatively impacted by agricultural practices during the last century due to the scarcity of records throughout the region. In eastern Nebraska, few plains pocket mice have been captured and no published account exists in recent decades. We investigated the current status of P. f. perniger, the eastern subspecies in Nebraska, because of a paucity of information regarding this subspecies’ natural history and suspected extirpation from the state. We captured 56 P. f. perniger in 13 counties in northeastern and east-central Nebraska in 2008, including 10 counties lacking prior records. We also obtained data on its presence in extreme eastern Nebraska (Douglas and Lancaster counties) via a literature review and query for specimens in museums. Some individuals without darker-colored guard hairs represented the eastern limits of the western subspecies P. f. flavescensassociated with the easternmost extent of the Sandhill Region of the state or other isolated sandy habitats. Across eastern Nebraska, many sites with captures of plains pocket mice appear to represent strongholds associated with isolated areas of friable, sandy soils. To date, presence of the species has not been detected in southeastern parts of the state. Conservation of habitats with sandy soils, along with implementation or continuance of disturbance regimes (i.e., grazing), will benefit this species and a number of other sand-adapted species in eastern Nebraska.La distribución del ratón de bolsillo de las llanuras (Perognathus flavescens) coincide con la de las praderas de pastizales altos en partes del noreste de su rango en el centro de los Estados Unidos. Su distribución y abundancia parece estar afectada de forma negativa por las prácticas agrícolas realizadas durante el último siglo, debido a la escasez de registros en toda la región. En el este de Nebraska, pocos ratones de bolsillo de las llanuras han sido capturados y no existe ningún registro publicado en décadas recientes. Investigamos el estado actual de P. f. perniger, la subespecie del este de Nebraska, debido a la escasez de información sobre su historia natural y su supuesta extirpación del estado. Capturamos 56 P. f. perniger en 13 condados en el noreste y centro-este de Nebraska en 2008, incluidos 10 condados que carecían de registros anteriores. También obtuvimos datos sobre su presencia en el extremo este de