<?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>S1870-34532019000101216</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2019.90.2790</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Coscinodiscus y Coscinodiscopsis (Bacillariophyceae) del Parque Nacional Sistema Arrecifal Veracruzano, golfo de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Coscinodiscus and Coscinodiscopsis (Bacillariophyceae) from National Park Sistema Arrecifal Veracruzano, Gulf of Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-Pulido]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aké-Castillo]]></surname>
<given-names><![CDATA[José Antolín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación Científica y Educación Superior de Ensenada  ]]></institution>
<addr-line><![CDATA[Ensenada Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Veracruzana Instituto de Ciencias Marinas y Pesquerías ]]></institution>
<addr-line><![CDATA[Boca del Río Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>90</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532019000101216&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532019000101216&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532019000101216&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Coscinodiscus Ehrenberg, 1839 constituye uno de los géneros más comunes de las diatomeas centrales. La identificación de las especies se basa en las dimensiones y características de la frústula: arreglo y densidad areolar, posición de las macrorimopórtulas, y presencia de microrimopórtulas sobre la valva además del anillo marginal. Para observar estas características, es necesario el estudio detallado de las valvas requiriendo hacer limpieza de las frústulas. En el Parque Nacional Sistema Arrecifal Veracruzano (PNSAV) existe el registro de 5 especies del género. El propósito de este trabajo fue estudiar a las especies de Coscinodiscus hipotetizando que una observación detallada de las frústulas elevaría la diversidad. En microscopía fotónica se estudiaron muestras fitoplanctónicas de 1 año de muestreo mensual abarcando el polígono del PNSAV. Se determinaron 8 especies del género: Coscinodiscus asteromphalus Ehrenberg, 1844, C. centralis Ehrenberg, 1844, C. concinnus Smith, 1856, C. gigas Ehrenberg, 1841, C. granii Gough, 1905, C. perforatus Ehrenberg, 1844, C. radiatus Ehrenberg, 1840 y C. wailesii Gran et Angst, 1931. Se identificó otra especie recientemente transferida: Coscinodiscopsis jonesiana (Greville) Sar et Sunesen, 2008. La riqueza de especies de Coscinodiscus en el PNSAV es media comparada con otras regiones de mares mexicanos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Coscinodiscus Ehrenberg, 1839 is one of the most common genus of centric diatoms. Species identification is based on dimension and characteristic of the frustule: arrangement and density of areolae, position of macrorimoportulae and the occurrence of microrimoportulae over the valve besides of the marginal ring. To observe all these characters is necessary to carry out detail studies of the valves by cleaning of frustules. In the National Park Sistema Arrecifal Veracruzano (NPSAV), there are 5 species recorded. The aim of this work was to study the species diversity of Coscinodiscus hypothesizing a detailed observation of frustules would raise the diversity. Using photonic microscopy, we studied phytoplankton samples belonging to one-year monthly-collected samples in the polygon of NPSAV. Eight species of the genus were identified: Coscinodiscus asteromphalus Ehrenberg, 1844, C. centralis Ehrenberg, 1844, C. concinnus Smith, 1856, C. gigas Ehrenberg, 1841, C. granii Gough, 1905, C. perforatus Ehrenberg, 1844, C. radiatus Ehrenberg, 1840, and C. wailesii Gran et Angst, 1931. Additionally, we identified other related species recently transferred from the genus: Coscinodiscopsis jonesiana (Greville) Sar et Sunesen, 2008. The species richness of Coscinodiscus in NPSAV is medium compared to other regions of Mexican seas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Diatomeas]]></kwd>
<kwd lng="es"><![CDATA[Frústula]]></kwd>
<kwd lng="es"><![CDATA[Macrorimopórtula]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="es"><![CDATA[Morfología]]></kwd>
<kwd lng="es"><![CDATA[Rimopórtula]]></kwd>
<kwd lng="en"><![CDATA[Diatoms]]></kwd>
<kwd lng="en"><![CDATA[Frustule]]></kwd>
<kwd lng="en"><![CDATA[Macrorimoportulae]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="en"><![CDATA[Morphology]]></kwd>
<kwd lng="en"><![CDATA[Rimoportulae]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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