<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2007-3364</journal-id>
<journal-title><![CDATA[Therya]]></journal-title>
<abbrev-journal-title><![CDATA[Therya]]></abbrev-journal-title>
<issn>2007-3364</issn>
<publisher>
<publisher-name><![CDATA[Asociación Mexicana de Mastozoología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-33642018000300251</article-id>
<article-id pub-id-type="doi">10.12933/therya-18-634</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Morphology and stomach content of the Goldman´s diminutive woodrat Nelsonia goldmani (Cricetidae: Neotominae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León-Tapia]]></surname>
<given-names><![CDATA[M. Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zaragoza-Quintana]]></surname>
<given-names><![CDATA[Elisa Paulina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peralta-Juárez]]></surname>
<given-names><![CDATA[Claudia Marisol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cervantes]]></surname>
<given-names><![CDATA[Fernando A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Ecología A.C.  ]]></institution>
<addr-line><![CDATA[Xalapa Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Veracruzana  ]]></institution>
<addr-line><![CDATA[Xalapa Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Biología Departamento de Zoología]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>3</numero>
<fpage>251</fpage>
<lpage>254</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-33642018000300251&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-33642018000300251&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-33642018000300251&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Goldman´s diminutive woodrat (Nelsonia goldmani) is an endemic rodent that inhabits the temperate and humid environments of the central highlands of Mexico. This species is considered uncommon because of the scarce and dispersed information about specimens collected across the Faja Volcanica Transmexicana. Therefore, it is crucial to generate new information about the basic biology of N. goldmani, which so much is unknown thus far. We present the morphological description of the stomach and its content from one specimen of N. goldmani. We performed a longitudinal bisection and washing of stomach from one adult male collected at the Natural Park &#8220;Las Peñas&#8221; in the municipality of Jilotepec, Estado de México, Mexico. The macroscopic structures of the stomach were described by observation in a stereoscopic microscope. The stomach content was mounted on sliders and its components were identified and photographed with an optical microscope. According to the gastric glandular epithelium distribution, N. goldmani have a bilocular-discoglandular stomach with a characteristic fornix ventricularis slightly elongated horizontally. The stomach content was composed by several plant items: epidermal tissues of steam and leaves of angiosperms, pollen of gymnosperms, spores of ferns, fungi and animal tissue like mouth appendages and legs of insects. The stomach morphology was similar to the N. neotomodon and the peromyscine Neotomodon alstoni described previously, but the flattened and elongated fornix ventricularis found in N. goldmani was distinctive. Nonetheless, this structure can vary between individuals and mainly depends of the amount of food before dissection. The plant material found in the stomach was similar to that reported in other rodents that inhabit in similar environments to the highlands of central Mexico, such as Peromyscus aztecus, P. difficilis and Reithrodontomys fulvescens.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La rata enana michoacana (Nelsonia goldmani) es un roedor endémico que habita en los ambientes templados y húmedos de la zona montañosa del centro de México. Esta especie es considerada como poco común debido a la escasa información disponible para los especímenes colectados en la Faja Volcánica Transmexicana. Por lo tanto, es indispensable generar información nueva de la biología básica de N. goldmani mucha de la cual se desconoce hasta el momento. Presentamos la descripción morfológica del estómago y su contenido en un ejemplar de N. goldmani. Se realizó un corte longitudinal y un lavado del estómago de un macho adulto colectado en el Parque Natural &#8220;Las Peñas&#8221; en el Municipio de Jilotepec, Estado de México, México. Se describieron las estructuras macroscópicas del estómago por observación en un microscopio estereoscópico. El contenido estomacal fue montado en laminillas y sus componentes fueron identificados y fotografiados en un microscopio óptico. Según la distribución del epitelio glandular gástrico, N. goldmani tienen un estómago bilocular-discoglandular con un característico fórnix ventricularis ligeramente alargado horizontalmente. El contenido estomacal estuvo compuesto por varios elementos vegetales: tejido epidérmico de tallos y hojas de angiospermas, polen de gimnospermas, esporas de helechos, hongos y tejido animal de aparatos bucales y patas de insectos. La morfología estomacal fue similar a la de N. neotomodon y el peromyscino Neotomodon alstoni descritos previamente, pero el fórnix ventricularis aplanado y alargado encontrado en N. goldmani fue distintivo. Sin embargo, esta estructura puede variar entre individuos y depende principalmente de la cantidad de alimento antes de la bisección. El material vegetal estomacal encontrado fue similar al reportado en otros roedores que habitan en ambientes similares a las zonas altas del centro de México como Peromyscus aztecus, P. difficilis y Reithrodontomys fulvescens.]]></p></abstract>
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<kwd lng="en"><![CDATA[rare species]]></kwd>
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