<?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>S1870-34532018000300631</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2018.3.2397</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[On two species of Ichthyouris (Nematoda: Pharyngodonidae) parasites of Mesonauta festivus (Pisces: Cichlidae) in the Brazilian Amazon region]]></article-title>
<article-title xml:lang="es"><![CDATA[Sobre dos especies de Ichthyouris (Nematoda: Pharyngodonidae) parásitas de Mesonauta festivus (Pisces: Cichlidae) en la Amazonía brasileña]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cárdenas]]></surname>
<given-names><![CDATA[Melissa Q.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernandes]]></surname>
<given-names><![CDATA[Berenice M. M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Malta]]></surname>
<given-names><![CDATA[José Celso O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Porto]]></surname>
<given-names><![CDATA[Daniel B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morais]]></surname>
<given-names><![CDATA[Aprígio M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Oswaldo Cruz Laboratório de Helmintos Parasitos de Peixes ]]></institution>
<addr-line><![CDATA[Rio de Janeiro RJ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,INPA Laboratório de Parasitologia e Patologia de Peixes ]]></institution>
<addr-line><![CDATA[ AM]]></addr-line>
<country>Brazil</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>3</numero>
<fpage>631</fpage>
<lpage>636</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532018000300631&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532018000300631&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532018000300631&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Two species of nematodes belonging to the genus Ichthyouris Inglis, 1962 (I. ro and I. bursata), were collected from the cichlid fish Mesonauta festivus in the central Brazilian Amazon region. Both species are reported in this locality for the first time. I. bursata is reported in a new host, M. festivus, and this is the first report of I. ro parasitizing its type host in Brazil. We provide a more detailed description for I. ro, including morphological aspects that were not mentioned in the original description.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se recolectaron 2 especies de nemátodos pertenecientes al género Ichthyouris Inglis, 1962, I. ro e I. bursata, del pez cíclido Mesonauta festivus en el centro de la Amazonía brasileña. Ambas especies se reportan por primera vez en esta localidad. I. bursata se registra en un nuevo hospedero, M. festivus, y éste es el primer informe de I. ro parasitando a su hospedero tipo en Brasil. Se da una descripción detallada de I. ro, incluyendo aspectos morfológicos que no fueron mencionados en la descripción original.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Biodiversity]]></kwd>
<kwd lng="en"><![CDATA[Nematodes]]></kwd>
<kwd lng="en"><![CDATA[Fish]]></kwd>
<kwd lng="en"><![CDATA[Amazonas State]]></kwd>
<kwd lng="en"><![CDATA[Brazil]]></kwd>
<kwd lng="es"><![CDATA[Biodiversidad]]></kwd>
<kwd lng="es"><![CDATA[Nemátodos]]></kwd>
<kwd lng="es"><![CDATA[Peces]]></kwd>
<kwd lng="es"><![CDATA[Estado Amazonas]]></kwd>
<kwd lng="es"><![CDATA[Brasil]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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