<?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>1870-3453</journal-id>
<journal-title><![CDATA[Revista mexicana de biodiversidad]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Biodiv.]]></abbrev-journal-title>
<issn>1870-3453</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-34532016000100140</article-id>
<article-id pub-id-type="doi">10.1016/j.rmb.2016.01.011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Ecología trófica de la lagartija Xenosaurus mendozai (Squamata: Xenosauridae) en el estado de Querétaro, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Trophic ecology of the knob-scaled lizard Xenosaurus mendozai (Squamata: Xenosauridae) from Querétaro, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zamora-Abrego]]></surname>
<given-names><![CDATA[Joan Gastón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega-León]]></surname>
<given-names><![CDATA[Ángela María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[Medellín Antioquia]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad de Córdoba Departamento de Biología ]]></institution>
<addr-line><![CDATA[Montería Córdoba]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2016</year>
</pub-date>
<volume>87</volume>
<numero>1</numero>
<fpage>140</fpage>
<lpage>149</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532016000100140&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532016000100140&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532016000100140&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se determinó la ecología trófica de la lagartija Xenosaurus mendozai en Querétaro, México, identificando la importancia relativa de las presas consumidas y evaluando las diferencias intersexuales en la composición de la dieta, a lo largo de un año. Para ello, se calculó su valor de importancia (IX), se evaluó el nivel de especialización mediante el índice de Levins, así como el solapamiento mediante el índice de Pianka. Los análisis del contenido del tracto digestivo indican que son insectívoras y su dieta se basa principalmente en 12 órdenes, de los cuales las larvas de lepidópteros, los coleópteros y los ortópteros representan más del 60% de su dieta; por lo que la tendencia de esta población es hacia la especialización (BA = 0.015), con un alto índice de solapamiento entre machos y hembras (OMH = 0.946). En términos generales, la conformación de la dieta de esta especie es similar a lo registrado en otras especies del género, lo que puede estar determinado por el uso del microhábitat. Sin embargo, se requiere de estudio de disponibilidad de presas para describir con mayor precisión las preferencias alimentarias, así como para realizar pruebas experimentales que permitan determinar si existe preferencia por algún tipo particular de presas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The feeding ecology of the knob-scaled lizard Xenosaurus mendozai from Querétaro, México, was studied in order to identify the relative importance of prey consumed, by evaluating the intersexual differences in the composition of their diet, throughout a year. Therefore, we calculated the importance value (IX) of each item, the trophic breadth by the standardized index of Levins&#8217;, and the dietary niche overlap using the Pianka's index. Our results indicate that these lizards are insectivorous and their diet is mainly based in at least 12 orders, of which Lepidoptera larvae, Coleoptera and Orthoptera represent over 60% of their diets; so the tendency of this population is towards specialization (BA=0.015), with a high overlap index between males and females (OMF=0.946). In general the diet of this species is similar to those reported in other species of the genus, which can be strongly influenced by microhabitat use. However, additional studies of prey availability are necessary to accurately describe food preferences, and experimental tests to determe whether there is a preference for a particular type of prey.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Dieta]]></kwd>
<kwd lng="es"><![CDATA[Artrópodos]]></kwd>
<kwd lng="es"><![CDATA[Importancia relativa]]></kwd>
<kwd lng="es"><![CDATA[Índices de amplitud y solapamiento del nicho]]></kwd>
<kwd lng="en"><![CDATA[Diet]]></kwd>
<kwd lng="en"><![CDATA[Arthropods]]></kwd>
<kwd lng="en"><![CDATA[Relative importance]]></kwd>
<kwd lng="en"><![CDATA[Niche breadth and overlap indices]]></kwd>
</kwd-group>
</article-meta>
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