<?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>S1870-34532018000100282</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2018.1.1925</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Masa relativa de la camada en Phrynosoma orbiculare (Squamata: Phrynosomatidae) en el Parque Estatal Sierra Morelos, Toluca, Estado de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Relative clutch mass in Phrynosoma orbiculare (Squamata: Phrynosomatidae) in the Parque Estatal Sierra Morelos, Toluca, Estado de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suárez-Rodríguez]]></surname>
<given-names><![CDATA[Orlando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suárez-Varón]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chávez-Siles]]></surname>
<given-names><![CDATA[Fernanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Arriaga]]></surname>
<given-names><![CDATA[Fernanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andrade-Soto]]></surname>
<given-names><![CDATA[Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilar-Isaac]]></surname>
<given-names><![CDATA[Lizet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sherbrooke]]></surname>
<given-names><![CDATA[Wade C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Gallegos]]></surname>
<given-names><![CDATA[Oswaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México Facultad de Ciencias Laboratorio de Herpetología]]></institution>
<addr-line><![CDATA[Toluca Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,American Museum of Natural History Southwestern Research Station ]]></institution>
<addr-line><![CDATA[Portal Arizona]]></addr-line>
<country>USA</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>89</volume>
<numero>1</numero>
<fpage>282</fpage>
<lpage>289</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532018000100282&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532018000100282&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532018000100282&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El tamaño y masa relativa de la camada y las particularidades de las crías son características importantes de historia de vida. El presente estudio aporta información sobre el tamaño y masa relativa de la camada y características de las crías de Phrynosoma orbiculare en el Parque Estatal Sierra Morelos, Toluca, Estado de México (± 2,700 m snm). Las hembras gestantes tuvieron una LHC de 75.2 ± 2.3 mm (n = 14), con un tamaño de camada de 8.3 ± 0.6 crías y una masa relativa de la camada de 27.2 ± 1.5 g. Las hembras de mayor talla y peso tuvieron un mayor número de crías, una situación común en lagartijas de ambientes templados; sin embargo, las hembras más ligeras tuvieron una mayor masa relativa de la camada que hembras de mayor peso; ambos resultados han sido registrados en lagartijas, incluyendo especies del género Phrynosoma. Las crías tuvieron una LHC de 26.1 ± 0.1 mm y un peso de 1.1 ± 0.01 g (sin diferencia sexual) y existe una variación baja en ambas características; la proporción sexual fue 1:1.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Clutch size, relative clutch mass and traits of hatchlings are important life history traits. The present study provides information on clutch size, relative clutch mass and traits of hatchlings of a population of Phrynosoma orbiculare occurring in the Parque Estatal Sierra Morelos, Toluca, Estado de México (± 2,700 m asl). Gravid females (n = 14) having SVL of 75.2 ± 2.3 mm produced clutch sizes of 8.3 ± 0.6 hatchlings, and relative clutch masses of 27.2 ± 1.5 g. Females of greater size and weight had higher numbers of live-born offspring, a common situation in lizards of temperate habitats, whereas lighter weight females had higher relative clutch mass than heavier females; both results have been recorded in lizards, including species of Phrynosoma. Neonates had SVL of 26.1 ± 0.1 mm, and weights of 1.1 ± 0.01 g (without sexual difference), we found a very low variation in both traits; the sex ratio was 1:1.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Reproducción]]></kwd>
<kwd lng="es"><![CDATA[Tamaño de camada]]></kwd>
<kwd lng="es"><![CDATA[Características de historia de vida]]></kwd>
<kwd lng="es"><![CDATA[Proporción sexual]]></kwd>
<kwd lng="en"><![CDATA[Reproduction]]></kwd>
<kwd lng="en"><![CDATA[Clutch size]]></kwd>
<kwd lng="en"><![CDATA[Life history traits]]></kwd>
<kwd lng="en"><![CDATA[Sex ratio]]></kwd>
</kwd-group>
</article-meta>
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