<?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>S1870-34532020000100623</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2020.91.3464</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[&#8220;Long time no see&#8221;: redescription of Orientatractis leiperi (Nematoda: Atractidae) parasite of Podocnemis unifilis (Testudines: Podocnemididae) from Pará State, Brazil]]></article-title>
<article-title xml:lang="es"><![CDATA[&#8220;Largo tiempo sin verte&#8221;: redescripción de Orientatractis leiperi (Nematoda: Atractidae) parásito de Podocnemis unifilis (Testudines: Podocnemididae) del estado de Pará, Brasil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jesus]]></surname>
<given-names><![CDATA[Ronald F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardoso]]></surname>
<given-names><![CDATA[Evelyn L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Willkens]]></surname>
<given-names><![CDATA[Yuri]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Furtado]]></surname>
<given-names><![CDATA[Adriano P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[Jeannie N. dos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Melo]]></surname>
<given-names><![CDATA[Francisco T. V.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal do Pará Instituto de Ciências Biológicas Laboratório de Biologia Celular e Helmintologia &#8220;Profa Dra Reinalda Marisa Lanfredi&#8221;]]></institution>
<addr-line><![CDATA[Belém Pará]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>91</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532020000100623&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532020000100623&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532020000100623&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract During a helminthological survey on freshwater turtles from the Brazilian Amazon, we collected fresh and well-preserved nematodes from the stomach of Podocnemis unifilis Troschel, 1848, that resembled Orientatractis leiperi. The morphology and morphometry of specimens described herein fits those from the original description. We also observed important morphological characters not reported previously or not properly described, and those are reported here for the first time: the structure of the excretory pore (surrounded by radial cuticle striations), structure and position of deirids, phasmids, oral papillae and the presence of a dorsolateral pair of papilla in caudal region. The present work provides a detailed redescription for O. leiperi, 50 years after its original description, adding a new host and locality for this species.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Durante el análisis helmintológico de tortugas de agua dulce en la Amazonía brasileña, fueron extraídos del estómago de Podocnemis unifilis Troschel, 1848, nemátodos que parecían pertenecer a la especie Orientatractis leiperi; estos ejemplares fueron utilizados para realizar la redescripción de esta especie mediante microscopía óptica y microscopía electrónica de barrido. La morfología y morfometría de los ejemplares analizados en este estudio se ajustaron a la descripción original. Importantes caracteres morfológicos que no fueron considerados previamente o que no fueron descritos adecuadamente, se detallan por primera vez en este trabajo: la estructura del poro excretor (rodeado de estrías radiales cuticulares), estructura y posición de las papilas cervicales, fasmidios y papilas orales, distribución y disposición de las papilas caudales en los machos y la presencia de un par de papilas dorsolaterales en la región caudal. Este trabajo presenta una redescripción detallada de O. leiperi, 50 años después de su descripción original, adicionando un nuevo hospedador y nueva localidad para la misma.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Turtle parasites]]></kwd>
<kwd lng="en"><![CDATA[Brazilian Amazon]]></kwd>
<kwd lng="en"><![CDATA[Atractidae]]></kwd>
<kwd lng="en"><![CDATA[Orientatractis leiperi]]></kwd>
<kwd lng="es"><![CDATA[Parásitos de tortugas]]></kwd>
<kwd lng="es"><![CDATA[Amazonía brasileña]]></kwd>
<kwd lng="es"><![CDATA[Atractidae]]></kwd>
<kwd lng="es"><![CDATA[Orientatractis leiperi]]></kwd>
</kwd-group>
</article-meta>
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