<?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>0122-9761</journal-id>
<journal-title><![CDATA[Boletín de Investigaciones Marinas y Costeras - INVEMAR]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Invest. Mar. Cost.]]></abbrev-journal-title>
<issn>0122-9761</issn>
<publisher>
<publisher-name><![CDATA[INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS "JOSE BENITO VIVES DE ANDRÉIS" (INVEMAR)    INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS -JOSE BENITO VIVES DE ANDRÉIS- (INVEMAR)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-97612020000100027</article-id>
<article-id pub-id-type="doi">10.25268/bimc.invemar.2020.49.1.772</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Presence of Poecilia mexicana Steindachner in a temporary hyperhaline estuary of the Gulf of Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Presencia de Poecilia mexicana Steindachner en un estuario hiperhalino temporal del golfo de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chávez-López]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[0000-0002-6105-4294]]></surname>
<given-names><![CDATA[Arturo Rocha-Ramírez ID]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[0000-0002-7545-2269]]></surname>
<given-names><![CDATA[Ángel Morán-Silva ID]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[Tlalnepantla Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>49</volume>
<numero>1</numero>
<fpage>27</fpage>
<lpage>38</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-97612020000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-97612020000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-97612020000100027&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In this contribution, Poecilia mexicana is recorded for the first time in a blind estuary study under hyperhalin conditions in the Gulf of Mexico and various ecological characteristics of the species are analyzed. 170 specimens in total (128 females and 42 males), were collected in May 2013 in the Laguna El Llano estuary, Veracruz, Mexico, which presented warm waters (31.4 °C), well-oxygenated (9.45 mg/L), transparent, and hyperhaline (average 73 UPS). Females were collected in a size range of 4.28-59.21 mm in standard length and 0.04-5.48 g by weight; males were collected in a size range of 15.73-51.41 mm LP and 0.091-2.97 g by weight. Largest size range was 10-29 mm standard length. The females presented a negative allometric growth; the males presented an isometric growth. Hyperhalinity of the water did not seem to affect the reproduction process of P. mexicana, since mature females were found with oocytes, eggs, and embryos, some of them presenting superfetation. Fertility was recorded between 12-179 oocytes/female, 8-162 eggs/female and 29-72 embryos/ female. Condition factor was positively correlated with the standard length and weight. This species can be classified as a detritivorous consumer that supplements its diet with minimal proportions of diatoms.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En esta contribución se registra por primera vez a Poecilia mexicana en un estuario ciego bajo condiciones de hiperhalinidad en el golfo de México y se analizan diversas características ecológicas de la especie. Los especímenes, 170 en total (128 hembras y 42 machos), se recolectaron en mayo de 2013 en el estuario Laguna El Llano, Veracruz, México, el cual presentó aguas cálidas (31,4°C), bien oxigenadas (9,45 mg/L), transparentes, e hiperhalinas (promedio 73 UPS). Las hembras se recolectaron en un intervalo de tallas de 4,28-59,21 mm de longitud patrón y de 0,04-5,48 g en peso; los machos se colectaron en un intervalo de tallas de 15,7351,41 mm LP y de 0,091-2,97 g en peso. El intervalo de talla más numeroso fue de 10-29 mm de longitud patrón. Las hembras presentaron un crecimiento alométrico negativo; los machos presentaron un crecimiento isométrico. La hiperhalinidad del agua no pareció afectar el proceso de reproducción de P. mexicana, pues se encontraron hembras maduras con ovocitos, huevos y embriones, algunas de ellas con superfetación. La fecundidad se registró entre 12-179 ovocitos/hembra, 8-162 huevos/hembra y 29-72 embriones/hembra. El factor de condición se correlacionó positivamente con la longitud patrón y el peso. Esta especie se puede clasificar como un consumidor detritívoro que complementa su dieta con proporciones mínimas de diatomeas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Laguna El Llano]]></kwd>
<kwd lng="en"><![CDATA[Poeciliidae]]></kwd>
<kwd lng="en"><![CDATA[Shortfin Molly]]></kwd>
<kwd lng="en"><![CDATA[Veracruz]]></kwd>
<kwd lng="es"><![CDATA[Laguna El Llano]]></kwd>
<kwd lng="es"><![CDATA[Poeciliidae]]></kwd>
<kwd lng="es"><![CDATA[Topote del Atlántico]]></kwd>
<kwd lng="es"><![CDATA[Veracruz]]></kwd>
</kwd-group>
</article-meta>
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