<?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>S0188-88972015000200239</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Riqueza de moluscos acuáticos en las Cuencas Hidrológicas Río Grijalva-Villahermosa y Río Tonalá, Lagunas del Carmen-Machona en Tabasco, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Freshwater mollusk species richness in the Río Grijalva-Villahermosa and Río Tonalá, Lagunas del Carmen-Machona Watersheds from Tabasco, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mellado Hernández]]></surname>
<given-names><![CDATA[Sujeidy Vianey]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rangel Ruíz]]></surname>
<given-names><![CDATA[Luis José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gamboa Aguilar]]></surname>
<given-names><![CDATA[Jaquelina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arévalo de la Cruz]]></surname>
<given-names><![CDATA[Juan Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montiel Moreno]]></surname>
<given-names><![CDATA[Joel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Morales]]></surname>
<given-names><![CDATA[Miguelina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias García]]></surname>
<given-names><![CDATA[Silvia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Padrón López]]></surname>
<given-names><![CDATA[Rosa Martha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pacheco Figueroa]]></surname>
<given-names><![CDATA[Coral Jazvel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gama Campillo]]></surname>
<given-names><![CDATA[Lilia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,UJAT División Académica de Ciencias Biológicas Laboratorio de Malacología]]></institution>
<addr-line><![CDATA[Villahermosa Tabasco]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2015</year>
</pub-date>
<volume>25</volume>
<numero>2</numero>
<fpage>239</fpage>
<lpage>247</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-88972015000200239&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-88972015000200239&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-88972015000200239&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En dos Cuencas del estado de Tabasco, se determinó la riqueza de moluscos acuáticos, los muestreos se realizaron en 23 localidades durante dos temporadas, lluvias (septiembre y octubre 2008) y estiaje (abril y mayo 2009). Los organismos fueron recolectados sobre las raíces de Rhizophora mangle (mangle rojo) y adheridas a Eichhornia crassipes (lirio acuático). Se recolectaron, un total de 23 especies 13 gasterópodos y tres bivalvos asociados a lirio acuático y cinco gasterópodos y cuatro bivalvos en raíces de mangle. La mayor riqueza específica se presentó en la Cuenca Hidrológica Río Grijalva-Villahermosa con 21 especies y dentro de ella la Subcuenca Río Carrizal con 20 especies. El 52.17%, de las especies recolectadas fueron dulceacuícolas y recolectadas sobre lirio acuático; el 30.44% salobres y recolectadas en raíces de mangle; el 17.39% eurihalinas y recolectadas en ambos tipos de vegetación. En cuanto a la estimación de la riqueza, se observó una diferencia de una a cinco especies entre la riqueza específica observada y la estimada por SChao2. De las 23 especies registradas ninguna se encuentra listada en la NOM-059-SEMARNAT-2010. Las especies dulceacuícolas más abundantes en las dos cuencas fueron Pyrgophorus coronatus, Mexinauta impluviata, Littoridinops tenuipes, Mayabina polita y Pomacea flagellata; y las salobres Mytilopsis leucophaeata, Brachidontes exustus, Littorina angulifera, Neritina virginea y Musculium transversum. La mayor riqueza y abundancia de moluscos asociados tanto a E. crassipes como a R. mangle se presentaron durante la temporada de lluvias.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The richness of aquatic snails was determined, on two basin of the state of Tabasco, samples were taken at 23 locations during two seasons, the rainy season (September and October 2008) and the dry season (April and May 2009). The organisms were collected from the roots of Rhizophora mangle (red mangrove) and those adhered to Eichhornia crassipes (water hyacinth). Thirteen gastropods and three bivalves associated with water hyacinth as well as four gastropods and four bivalves from mangrove roots were collected. The CH Grijalva River-Villahermosa present he highest species richness 21 and 20 species were within the Subc. Carrizal River 52.17% of the species were from freshwater and collected on water lily; 30.44% were collected were brackish and collected on mangrove roots; 17.39% on euryhaline and harvested on both vegetation types. As for the estimation of richness, a difference of one to five species was observed between then species richness estimated and that estimated with SChao2. Of the 23 species recorded in this study none are listed in the NOM-059-SEMARNAT-2010. The most abundant freshwater species on the two basins were Pyrgophorus coronatus, Mexinauta impluviata, Littoridinops tenuipes, Mayabina polita and Pomacea flagellata; and brackish Mytilopsis leucophaeata, Brachidontes exustus, Littorina angulifera, Neritina virginea and Musculium transversum. The greatest richness and abundance of molluscs associated with both E. crassipes as R. mangle were present during the rainy season.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Abundancia]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="es"><![CDATA[moluscos]]></kwd>
<kwd lng="es"><![CDATA[riqueza]]></kwd>
<kwd lng="en"><![CDATA[Abundance]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="en"><![CDATA[mollusks]]></kwd>
<kwd lng="en"><![CDATA[richness]]></kwd>
</kwd-group>
</article-meta>
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