<?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>S0065-17372016000200158</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de la calidad espermática epididimal en hipopótamos Hippopotamus amphibius (Artiodactyla: Hippopotamidae) ubicados en el Magdalena Medio, Colombia]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of epididymal spermatic quality of hippopotamus Hippopotamus amphibius (Artiodactyla: Hippopotamidae) located in the Colombian Middle Magdalena]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Restrepo Betancur]]></surname>
<given-names><![CDATA[Giovanni]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Varela Giraldo]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Usuga Suarez]]></surname>
<given-names><![CDATA[Alexandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[ Medellín]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Politécnico Colombiano Jaime Isaza Cadavid Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad CES Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[Medellín Antioquia]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>158</fpage>
<lpage>167</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0065-17372016000200158&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0065-17372016000200158&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0065-17372016000200158&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El hipopótamo común (Hippopotamus amphibius) es un mamífero del orden Artiodactyla, que habita en África, con una población decreciente a nivel global. Con fines de conservación genética, se han realizado procesos de biotecnología reproductiva, entre los que se reporta, la recuperación de espermatozoides por métodos como la electroeyaculación y la extracción desde epidídimos. Este mamífero es considerado una especie invasora exótica y fue introducido en Colombia en 1985; actualmente se reproduce de forma descontrolada en la región del Magdalena Medio. Como medida de control poblacional, se ha realizado la esterilización quirúrgica de algunos ejemplares. El objetivo de este estudio fue evaluar diferentes parámetros espermáticos e histológicos, relacionados con la calidad seminal epididimal de hipopótamos comunes ubicados en el Magdalena Medio, Colombia. Dos hipopótamos fueron orquiectomizados quirúrgicamente y los espermatozoides fueron recuperados por los métodos combinados de lavado retrógrado e inyección de medio. Se realizó la evaluación de la movilidad (sistema SCA(r)), la vitalidad espermática y la morfología espermática (prueba supravital), el potencial de membrana mitocondrial (JC-1), la integridad acrosómica (FITC-PNA), y la integridad estructural (SYBR14/IP) y funcional (prueba HOS) de la membrana plasmática. Asimismo, se realizó un análisis histológico de testículos y epidídimos. A excepción de la movilidad progresiva, la integridad funcional de membrana y la morfología espermática, se hallaron resultados muy similares para los parámetros de calidad seminal de ambos individuos. Las anormalidades espermáticas predominantes fueron gota citoplasmática y cola enrollada. El análisis histológico evidenció un proceso activo de espermatogénesis. Se concluye que la extracción epididimal de espermatozoides, posterior a la orquiectomía de hipopótamos comunes ubicados en un hábitat no nativo, permite obtener muestras espermáticas de buena calidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Common hippopotamus (Hippopotamus amphibius) is a mammal of the Artiodactyla order, living in Africa, with a declining population globally. With genetic conservation purposes, there have been processes of reproductive biotechnology, among which it is reported, recovery of sperm by methods as electroejaculation and extraction from the epididymis. This mammal is considered an exotic and invasive species was introduced in Colombia 1985; currently it reproduces out of control in the Middle Magdalena region. As a means of population control, it has performed the surgical sterilization of some specimens. The aim of this study was to evaluate different sperm and histological parameters related with epididymal semen quality of common hippopotamus located in the Colombian Middle Magdalena. Two hippopotamus were surgically orchiectomized and sperm were recovered by the combined methods of retrograde washing and medium injection. It was evaluated the sperm motility (SCA(r) system), the sperm vitality and morphology (supravital test), the mitochondrial membrane potential (JC-1), the acrosomal integrity (FITC-PNA), and the structural (SYBR14 / IP) and functional (HOS test) plasmatic membrane integrity. Also histological analysis of testis and epididymis were performed. Except for progressive motility, functional membrane integrity and sperm morphology, very similar results for semen quality parameters for both individuals were found. The predominant sperm abnormalities were cytoplasmic droplet and coiled tail. Histological analysis showed an active spermatogenesis process. We conclude that, after orchiectomy in common hippopotamus located in a non-native habitat, epididymal sperm extraction allows to obtain good quality sperm samples.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Colombia]]></kwd>
<kwd lng="es"><![CDATA[cinética espermática]]></kwd>
<kwd lng="es"><![CDATA[histología]]></kwd>
<kwd lng="en"><![CDATA[Colombia]]></kwd>
<kwd lng="en"><![CDATA[sperm kinetics]]></kwd>
<kwd lng="en"><![CDATA[histology]]></kwd>
</kwd-group>
</article-meta>
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