<?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>1659-4266</journal-id>
<journal-title><![CDATA[Cuadernos de Investigación UNED]]></journal-title>
<abbrev-journal-title><![CDATA[Cuadernos de Investigación UNED]]></abbrev-journal-title>
<issn>1659-4266</issn>
<publisher>
<publisher-name><![CDATA[Universidad Estatal a Distancia de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-42662022000200181</article-id>
<article-id pub-id-type="doi">10.22458/urj.v14i2.4352</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The Amazon sailfin catfish Pterygoplichthys disjunctivus x pardalis (Siluriformes: Loricariidae) in Panamá]]></article-title>
<article-title xml:lang="es"><![CDATA[El pez gato amazónico Pterygoplichthys disjunctivus x pardalis (Siluriformes: Loricariidae) en Panamá]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Gutiérrez]]></surname>
<given-names><![CDATA[Rigoberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Smithsonian Tropical Research Institute Naos Marine Laboratories STRI Neotropical Fish Collection]]></institution>
<addr-line><![CDATA[ Panama]]></addr-line>
<country>Panama</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>14</volume>
<numero>2</numero>
<fpage>181</fpage>
<lpage>184</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-42662022000200181&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-42662022000200181&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-42662022000200181&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Introduction: Despite having a rich and diverse native freshwater fish fauna, exotic species have been introduced to Panama since the 20th century. Objective: To report its presence in the fresh waters of Panama of a newly recorded exotic fish. Methods: Specimens were caught with gillnet in Gatun lake, on September 30, 2017. Results: Three specimens with average standard length and weight of 233mm and 307g, respectively, were identified as Pterygoplichthys disjunctivus x pardalis. This armored catfish, native to the Amazon basin, is breeding in Gatun and may threaten local species. Conclusion: The exotic fish Pterygoplichthys disjunctivus x pardalis has a reproductive population in Gatun Lake, Panama.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción: A pesar de tener Panamá una rica y diversa fauna nativa de peces de agua dulce, se han introducido especies exóticas desde el siglo XX. Objetivo: Reportar la presencia en un lago panameño de un pez exótico no registrado. Métodos: Los ejemplares fueron capturados con red de enmalle en el lago Gatún, el 30 de septiembre de 2017. Resultados: Tres ejemplares con longitud y peso estándar promedio de 233 mm y 307 g, respectivamente, fueron identificados como Pterygoplichthys disjunctivus x pardalis. Este bagre acorazado, originario de la cuenca del Amazonas, se está reproduciendo en Gatún y podría amenazar especies locales. Conclusión: El pez exótico Pterygoplichthys disjunctivus x pardalis tiene una población reproductiva en el lago Gatún, Panamá.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[First record]]></kwd>
<kwd lng="en"><![CDATA[exotic fish]]></kwd>
<kwd lng="en"><![CDATA[amazon catfish]]></kwd>
<kwd lng="en"><![CDATA[Gatun Lake]]></kwd>
<kwd lng="en"><![CDATA[Panama.]]></kwd>
<kwd lng="es"><![CDATA[Primer registro]]></kwd>
<kwd lng="es"><![CDATA[pez exótico]]></kwd>
<kwd lng="es"><![CDATA[pez amazónico]]></kwd>
<kwd lng="es"><![CDATA[Lago Gatún]]></kwd>
<kwd lng="es"><![CDATA[Panamá.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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