<?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>S2007-33642017000300263</article-id>
<article-id pub-id-type="doi">10.12933/therya-17-495</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Morphological description of the glans penis and baculum of Coendou quichua (Rodentia: Erethizontidae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Leon-Alvarado]]></surname>
<given-names><![CDATA[Omar Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Chaves]]></surname>
<given-names><![CDATA[Héctor E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Industrial de Santander Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[Bucaramanga ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Caldas Facultad de Ciencias Exactas y Naturales Departamento de Ciencias Biológicas]]></institution>
<addr-line><![CDATA[Manizales ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>3</numero>
<fpage>263</fpage>
<lpage>268</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-33642017000300263&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-33642017000300263&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-33642017000300263&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[External morphology of the glans and baculum are important characters for specific delimitation, especially for rodents (Simson et al. 1995). However, for Erethizontidae there are few descriptive works; in fact, for Neotropical porcupines of the genus Coendou there is just one brief contribution for an indeterminate species by Pocock in 1922. In this work, the morphology of the glans and baculum of Coendou quichua is described. The specimen was collected at the municipality of San Vicente de Chucurí, Santander, Colombia. The penis was dissected and fixed in formaldehyde for one day, and later preserved in ethanol. The baculum was extracted and cleared with potassium hydroxide to be visualized, photographed and measured. The glans and baculum were compared with the description of others porcupines (Erethizon dorsatum and Hystrix brachyura) available in literature, and three additional Neotropical caviomorph rodents (Cuniculuspaca, Dasyproctapunctata and Cavia tschudii). The glans length is almost twice the glans head width (Table 1) and comprises the third part of the total penis length. The penis presents a tenuous dark coloration on the head and small tegumentary protuberances formed by 3-4 small spines (Figure 1A). As in other hystricomorph rodents, the glans exhibits an invagination at its tip (sacculus urethralis) which has corrugated walls and presents two conspicuous spikes at the bottom (Figure 1C). Furthermore, the baculum is as large as the C. quichua glans, dorsally concave and ventrally convex (Figure 1B). Although the glans and baculum of C. quichua and E. dorsatum are similar, the latter presents larger glans (Table 1), and the sacculus urethralis lacks of corrugated walls and spiny protuberances. When comparing C. quichua and H. brachyura, the only difference is that the bottom of the sacculus urethralis, near to the spikes is smooth, without spiny protuberances. In contrast, the glans of three other Neotropical caviomorphs are remarkable different from C. quichua, where they present more complex and densely distributed tegumentary protuberances above the glans. Overall, the baculum is the most varying structure for all species, with marked differences in length and width (Table 1) and the shape of the ends. Although the family Erethizontidae is more closed related to the Cavioidea than to Hystricidae, the glans of individuals of the family Erethizontidae are more similar to the glans of the Hystricidae. In addition, for these species, both glans and baculum present important characters that might be used for taxonomic identification. However, the differences of both structures within Coendou are unknown, therefore it is necessary the description of the genitalia of additional species.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[La morfología externa del glande y báculo son caracteres importantes para la delimitación de especies, en especial para roedores (Simson et al. 1995). Sin embargo, para Erethizontidae existen pocos trabajos descriptivos; de hecho, para los puercoespines neotropicales del género Coendou solo hay una breve contribución publicada por Pocock en 1922. Aquí, se describe la morfología del glande y báculo de Coendou quichua. El espécimen se recolectó en el municipio de San Vicente de Chucurí, Santander, Colombia. El pene fue extraído y se fijó en formaldehido por un día, para después ser preservado en etanol. El báculo se extrajo del glande y se transparentó con hidróxido de potasio para ser visualizado, fotografiado y medido. El glande y báculo fueron comparados con la descripción de otros puercoespines (Erethizon dorsatum e Hystrix brachyura) disponibles en literatura y adicionalmente con tres roedores caviomorfos neotropicales (Cuniculus paca, Dasyprocta punctata y Cavia tschudii). La longitud del glande es cerca de dos veces el ancho de la cabeza del glande (Tabla 1) y comprende la tercera parte de la longitud total del pene. El pene presenta una coloración oscura tenue en la cabeza y protuberancias epiteliales pequeñas formadas por 3-4 espinas (Figure 1A). Al igual que el resto de roedores histricomorfos, el glande presenta una invaginación en la punta (sacculus urethralis) la cual tiene paredes corrugadas y presenta dos púas conspicuas en el fondo (Figure 1C). Por otro lado, el báculo es igual de largo al glande de C. quichua, cóncavo dorsalmente y convexo ventralmente (Figure 1B). Aunque los glandes y báculos de C. quichua y E. dorsatum son similares, el último presenta un glande más grande (Tabla 1) y el sacculus urethralis no tiene las paredes corrugadas y con protuberancias espinosas. Al comparar C. quichua y H. brachyura, la única diferencia es que en el fondo del sacculus urethralis, cerca de las púas, es liso y sin protuberancias espinosas. En contraste, los glandes de los otros tres caviomorfos neotropicales son bastante distintos del de C. quichua, donde los de ellos presentan protuberancias epiteliales más complejas y más densamente distribuidas sobre todo el glande. En general, el báculo es la estructura con mayor variación para todas las especies, con diferencias marcadas en el largo y ancho (Tabla 1) y la forma de cada uno de los extremos. A pesar de que la familia Erethizontidae está más relacionada con Cavioidea que con Hystricidae, el glande de los individuos de la familia Erethizontidae es más similar al glande de Hystricidae. Además, para estas especies, el glande y el báculo presentan importantes caracteres que podrían ser usados en taxonomía. Sin embargo, las diferencias dentro de Coendou son desconocidas, por lo cual es necesario la descripción de la genitalia de especies adicionales del género.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Baculum]]></kwd>
<kwd lng="en"><![CDATA[Erethizontidae]]></kwd>
<kwd lng="en"><![CDATA[glans morphology]]></kwd>
<kwd lng="en"><![CDATA[Quichua porcupine]]></kwd>
<kwd lng="en"><![CDATA[sacculus urethralis]]></kwd>
<kwd lng="es"><![CDATA[Baculum]]></kwd>
<kwd lng="es"><![CDATA[Erethizontidae]]></kwd>
<kwd lng="es"><![CDATA[glans morphology]]></kwd>
<kwd lng="es"><![CDATA[Quichua porcupine]]></kwd>
<kwd lng="es"><![CDATA[sacculus urethralis]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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