<?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>0120-2952</journal-id>
<journal-title><![CDATA[Revista de la Facultad de Medicina Veterinaria y de Zootecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Med. Vet. Zoot.]]></abbrev-journal-title>
<issn>0120-2952</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Medicina Veterinaria y de Zootecnia Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-29522023000300006</article-id>
<article-id pub-id-type="doi">10.15446/rfmvz.v70n3.107133</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Ciclo estral de Alouatta palliata y Alouatta seniculus: una revisión]]></article-title>
<article-title xml:lang="en"><![CDATA[Alouatta palliata and Alouatta seniculus oestrus: a review]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Contreras-Ibarra]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-Escobar]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tovio-Luna]]></surname>
<given-names><![CDATA[N. I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sepúlveda-Heredia]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urian-Ávila]]></surname>
<given-names><![CDATA[M. P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Medicina Veterinaria y Zootecnia Departamento de Producción Animal y de Salud Animal]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>70</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-29522023000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-29522023000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-29522023000300006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El mono aullador rojo colombiano (A. seniculus) y mono aullador de manto (A. palliata) son representantes del género Alouatta en Colombia y, según análisis de la Unión Internacional para la Conservación de la Naturaleza (UICN), sus poblaciones tienden a decrecer por múltiples factores. Esto sugiere la necesidad de orientar acciones para su conservación, para ello se requiere conocimiento de sus dinámicas reproductivas como la identificación y caracterización del ciclo estral. Se examinaron documentos bajo los criterios Alouatta seniculus, Alouatta paliatta, Alouatta, ciclo estral y reproducción en Scielo, Google Scholar, PubMed, Web of Science, Wiley, Science Direct y SpringerLink. Se encontraron quince artículos, cuatro libros, cuatro tesis de maestría y una monografía; en estos estudios se abordaban aspectos sobre comportamientos sexuales, cambios en los genitales y medición de hormonas. Los estudios han establecido una duración promedio del ciclo para A. seniculus de 17 y de 29,5 ±1,5 días, lo que muestra un rango amplio en comparación con lo hallado para A. palliata, donde los estudios evidencian una duración de 16,3; 15,52 ±4,88 y 16,08 ±4,27 días. Se concluye que algunos aspectos comunes entre las especies son la estacionalidad de los nacimientos durante la época seca, la relevancia del rango social del macho en las solicitudes de cópula por parte de las hembras en estro y algunos comportamientos como el olfateo y el lamido de genitales durante la receptividad sexual. Asimismo, es necesario conducir estudios en las especies de Alouatta en Colombia que, además de abordar las dinámicas reproductivas, consideren la influencia de factores medioambientales y sociales sobre estas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Colombian red howler monkey (A. seniculus) and mantled howler monkey (A. palliata) are representatives of the genus Alouatta in Colombia and according to IUCN (for its name in Spanish) analysis their populations tend to decrease due to multiple factors. This suggests the need to guide actions for their conservation, which requires knowledge of their reproductive dynamics, such as the identification and characterization of the estrous cycle. Papers were examined under the criteria Alouatta seniculus, Alouatta paliatta, Alouatta, estrus cycle, and reproduction in Scielo, Google Scholar, PubMed, Web of Science, Wiley, Science Direct, and SpringerLink. 15 articles, 4 books, 4 master's theses and 1 monograph were found; these studies addressed aspects of sexual behaviors, changes in genitalia and hormone measurement. The studies have established an average cycle length for A. seniculus of 17 and 29.5 ±1.5 days, thus showing a wide range compared to what was found for A. palliata where the studies evidenced a cycle length of 16.3, 15.52 ±4.88 and 16.08 ±4.27 days. The conclusion is that some common aspects among the species are the seasonality of births during the dry season, the relevance of the male's social rank in copulation requests by females in estrus and some behaviors such as sniffing and genital licking during sexual receptivity. Likewise, it is necessary to conduct studies on Alouatta species in Colombia that not only address reproductive dynamics but also consider the influence of environmental and social factors on them.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[mono aullador]]></kwd>
<kwd lng="es"><![CDATA[reproducción]]></kwd>
<kwd lng="es"><![CDATA[Alouatta seniculus]]></kwd>
<kwd lng="es"><![CDATA[Alouatta palliata]]></kwd>
<kwd lng="es"><![CDATA[hormonas]]></kwd>
<kwd lng="en"><![CDATA[howler monkey]]></kwd>
<kwd lng="en"><![CDATA[reproduction]]></kwd>
<kwd lng="en"><![CDATA[Alouatta seniculus]]></kwd>
<kwd lng="en"><![CDATA[Alouattapalliata]]></kwd>
<kwd lng="en"><![CDATA[hormones]]></kwd>
</kwd-group>
</article-meta>
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