<?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>0065-1737</journal-id>
<journal-title><![CDATA[Acta zoológica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Zool. Mex]]></abbrev-journal-title>
<issn>0065-1737</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0065-17372021000100114</article-id>
<article-id pub-id-type="doi">10.21829/azm.2021.3712319</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Social correlates of variation in urinary oxytocin concentrations of mantled howler monkeys Alouatta palliata (Gray, 1849) (Primates: Atelidae): A preliminary assessment]]></article-title>
<article-title xml:lang="es"><![CDATA[Correlatos sociales de la variación en las concentraciones de oxitocina urinaria de monos aulladores de manto Alouatta palliata (Gray, 1849) (Primates: Atelidae): Una evaluación preliminar]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Espinoza]]></surname>
<given-names><![CDATA[Diana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[D. Dias]]></surname>
<given-names><![CDATA[Pedro Américo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coyohua-Fuentes]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Canales-Espinosa]]></surname>
<given-names><![CDATA[Domingo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rangel-Negrín]]></surname>
<given-names><![CDATA[Ariadna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Veracruzana Instituto de Neuroetología ]]></institution>
<addr-line><![CDATA[Xalapa Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>37</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0065-17372021000100114&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0065-17372021000100114&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0065-17372021000100114&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT There is growing evidence that non-human primate sociality is linked to proximate neuroendocrine mechanisms. Arginine vasopressin, endorphins, and oxytocin may be involved in such mechanisms. Here, we perform a preliminary analysis of the social correlates of variation in urinary oxytocin concentrations in mantled howler monkeys (Alouatta palliata). From January to December 2017, we studied 13 adult mantled howler monkeys belonging to two groups. We recorded the occurrence of social interactions (547.5 observation hours); assessed proximity among group members (2,194 instantaneous recordings); and collected 172 urine samples. Urine samples were assayed (ELISA) for oxytocin concentrations, which were corrected for specific gravity, resulting in 54 analyzed samples. Hormone concentrations increased by approximately 62% when individuals were involved in affiliative interactions. With respect to when no affiliative interactions occurred, urinary oxytocin concentrations were higher when dyads with a low-quality social relationship affiliated. These results agree with previous contentions that this hormone is linked to participation in affiliative interactions. Convergence between these and results from other taxa supports the hypothesis that the biological mechanisms that allow for primate sociality are shared among species.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Existe una creciente evidencia de que la sociabilidad en primates no humanos está relacionada con mecanismos neuroendocrinos. La arginina vasopresina, las endorfinas y la oxitocina pueden estar involucradas en tales mecanismos. Aquí, realizamos un análisis preliminar de los correlatos sociales de la variación en las concentraciones de oxitocina urinaria en monos aulladores de manto (Alouatta palliata). De enero a diciembre de 2017, estudiamos 13 monos aulladores de manto adultos pertenecientes a dos grupos. Registramos la ocurrencia de interacciones sociales (547.5 horas de observación); evaluamos la proximidad entre los miembros del grupo (2.194 registros instantáneos); y recolectamos 172 muestras de orina. Analizamos las muestras de orina (ELISA) para determinar las concentraciones de oxitocina, las cuales corregimos por la gravedad específica, lo que resultó en 54 muestras analizadas. Con respecto a cuando no ocurrieron interacciones afiliativas, las concentraciones de oxitocina aumentaron aproximadamente un 62% cuando los individuos participaron en interacciones afiliativas, y las concentraciones de oxitocina fueron mayores cuando díadas con una relación social de baja calidad se afiliaron. Estos resultados convergen con propuestas previas de que la oxitocina está vinculada a la participación en interacciones afiliativas. La convergencia entre estos resultados y los reportados para otros taxa apoya la hipótesis de que los mecanismos biológicos que permiten la sociabilidad de los primates se comparten entre las especies.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[affiliation]]></kwd>
<kwd lng="en"><![CDATA[Alouatta]]></kwd>
<kwd lng="en"><![CDATA[neuroendocrine mechanisms]]></kwd>
<kwd lng="en"><![CDATA[platyrrhines]]></kwd>
<kwd lng="en"><![CDATA[sociality]]></kwd>
<kwd lng="es"><![CDATA[afiliación]]></kwd>
<kwd lng="es"><![CDATA[Alouatta]]></kwd>
<kwd lng="es"><![CDATA[mecanismos neuroendocrinos]]></kwd>
<kwd lng="es"><![CDATA[platirrinos]]></kwd>
<kwd lng="es"><![CDATA[sociabilidad]]></kwd>
</kwd-group>
</article-meta>
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