<?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>0188-8897</journal-id>
<journal-title><![CDATA[Hidrobiológica]]></journal-title>
<abbrev-journal-title><![CDATA[Hidrobiológica]]></abbrev-journal-title>
<issn>0188-8897</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Metropolitana, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-88972017000300429</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[First record of Placozoa from the Gulf of Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Primer registro de Placozoa para el Golfo de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega Tecuatl]]></surname>
<given-names><![CDATA[Tania Shazel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arreola Alemón]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuervo González]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Veracruzana Facultad de Ciencias Biológico y Agropecuarias Laboratorio de Evolución y Embriología]]></institution>
<addr-line><![CDATA[Veracruz ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Psiquiatría, &#8220;Ramón de la Fuente&#8221; Departamento de Psiquiatría Genética ]]></institution>
<addr-line><![CDATA[CDMX ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>27</volume>
<numero>3</numero>
<fpage>429</fpage>
<lpage>432</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-88972017000300429&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-88972017000300429&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-88972017000300429&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Placozoa is a phylum with only one species:Trichoplax adhaerens (F. E. Schulze, 1883); recent genetic studies suggest, however,that several haplotypes inhabit tropical and subtropical waters around the world. Placozoans have been found usually close to littoral zones where mangrove forests occur.  Goals: To provide the second record of this species from the coasts of Mexico and describe a new filament structure observed in the upper epithelium.  Methods: Photographic images were taken of Placozoans found in glass slides introdu ced in marine aquariums. Some specimens were collected and stained with Mito Tracker, DAPI and Lyso Tracker fluorescent dyes according to the manufacturer instructions.  Results: Puerto Morelos in the Mexican Caribbean Sea and Florida in the Atlantic coast are the closest places to the Gulf of Mexico were Placozoans have been recorded. We report here the first record of Trichoplax adhaerens in the Gulf of Mexico. The organisms were found in sea water aquariums built with materials, water, and invertebrates obtained from the Tuxpan reef (21.016667 N, 97.186389 W), an emerged platform that belongs to the Lobos-Tuxpan Reef System.  Conclusions: This finding is the first record of Trichoplax for the coasts of the western Gulf of Mexico and includes the description of a filament structure in the upper epithelium not reported before.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Placozoa es un phylum con solo una especie:Trichoplax adhaerens (F. E. Schulze, 1883); sin embargo, estudios genéticos recientes sugieren que varios haplotipos habitan en aguas tropicales y subtropicales alrededor del mundo. Generalmente los Placozoarios han sido encontrados cerca de zonas litorales donde hay bosques de manglar.  Objetivos. Proporcionar el segundo registro de esta especie para las costas de México y describir una nueva estructura filamentosa observada en el epitelio superior.  Métodos: Se tomaron imágenes fotográficas de Placozoarios hallados en laminillas de vidrio introducidas en acuarios marinos. Algunos especímenes fueron colectados y teñidos con los colorantes fluorescentes mitotracker, DAPI y lysotracker siguiendo las instrucciones de los fabricantes.  Resultados: Puerto Morelos en el mar Caribe mexicano y la costa atlántica de Florida, son los lugares más cercanos al Golfo de México donde los Placozoarios han sido registrados. Aquí reportamos por primera vez a Trichoplax adhaerens en el Golfo de México. Los organismos fueron encontrados en acuarios marinos construidos con materiales, agua e invertebrados obtenidos del arrecife Tuxpan (21.016667 N, 97.186389 O), una plataforma emergente que pertenece al sistema arrecifal Lobos-Tuxpan.  Conclusiones: Este hallazgo representa el primer registro de Trichoplax para las cos tas del Oeste del Golfo de México, e incluye la descripción de una es tructura filamentosa en el epitelio superior no reportada antes.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Gulf of Mexico]]></kwd>
<kwd lng="en"><![CDATA[Placozoa]]></kwd>
<kwd lng="en"><![CDATA[Trichoplax adhaerens]]></kwd>
<kwd lng="es"><![CDATA[Golfo de México]]></kwd>
<kwd lng="es"><![CDATA[Placozoa]]></kwd>
<kwd lng="es"><![CDATA[Trichoplax adhaerens]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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