Distributional expansion of the Hispid Cotton Rat (Sigmodon hispidus) into Dawson County, Nebraska
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Abstract:
In the last century, the Hispid Cotton Rat (Sigmodon hispidus) has moved northward in central parts of the United States, reaching Nebraska in the late 1950s. Recent surveys demonstrate Hispid Cotton Rats inhabit counties across southern parts of Nebraska south of the Platte River. Herein, we report on captures of S. hispidus from a new county (Dawson County), its seasonal occurrence at our study site, and the first known record of the Hispid Cotton Rat north of channels of the Platte River. Our captures represent one of the northern-most records in Nebraska.Keywords:
Sigmodon hispidus
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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. flavescens associated 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.
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Journal Article Distributional Records for the Prairie Vole and the Hispid Cotton Rat in Colorado Get access Andrew B. Carey Andrew B. Carey Department of Zoology and Entomology, Colorado State University, Ft. Collins, Colorado 80523 Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 59, Issue 3, 21 August 1978, Page 624, https://doi.org/10.2307/1380243 Published: 21 August 1978 Article history Received: 28 October 1977 Accepted: 02 January 1978 Published: 21 August 1978
Vole
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Sigmodon hispidus
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Sigmodon hispidus
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Sigmodon hispidus
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Hispid hare (Caprolagu shispidus) is an endangered lagomorph which had a wide range of distribution in the past, but currently it is known to occur only from few isolated tall grass pockets of India and Nepal. We explored the population status, habitat utilization and existing threats of the Hispid hare at Shuklaphanta National Park (SNP) by the strip transect and quadrate sampling methods from November 2015 to May 2016 covering both winter and summer seasons. Four study sites of total 1.58ha were selected within SNPand strip transects were randomly laid to determine presence and absence of pellets of Hispid hare and their counts were used to estimate the population density. The Population density of Hispid hare was found to be 0.1820/ha in winter and 0.2268/ha in summer with the statistically significant preference to the tall grassland habitat. Twelve grass species were identified in the habitat of Hispid hare with dominancy of Saccharum spontaneum, Imperata cylindrica, Narenga porphyrocoma, and Saccharum munj. Among the grasses, Imperata cylindrica and Narenga porphyrocoma were the food species of higher preference for Hispid hare.
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E. LENDELL COCKRUM University of Kansas Museum of Natural History, Lawrence The hispid cotton rat, Sigmodon hispidus, Say and Ord, has expanded its range northward in Kansas during the past several years (Rinker, 1942; Hibbard, 1944). The aim of the present account is to summarize the information available, both published and unpublished, on the distribution, and expansion of the range of this sigmodont rodent in Kansas. Unless otherwise indicated, localities are in Kansas.
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Cotton rat
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