<?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>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822022000200027</article-id>
<article-id pub-id-type="doi">10.18845/tm.v35i2.5466</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Presencia de microplásticos en especies marinas del Parque Nacional Marino las Baulas]]></article-title>
<article-title xml:lang="en"><![CDATA[Presence of microplastics in marine species of the Marine National Park las Baulas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Astorga-Pérez]]></surname>
<given-names><![CDATA[Angélica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ulate-Naranjo]]></surname>
<given-names><![CDATA[Karol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abarca-Guerrero]]></surname>
<given-names><![CDATA[Lilliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica Escuela de Química ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Escuela de Ciencia Biológicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>35</volume>
<numero>2</numero>
<fpage>27</fpage>
<lpage>38</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822022000200027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822022000200027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822022000200027&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La ingesta de microplásticos (MPs) en diversas especies marinas ha sido reportada en la literatura, sin embargo, el grado de contaminación en los sistemas y la biota asociada a estos es poco conocido. En este estudio se presentan los resultados de la presencia de microplásticos en siete especies de peces pelágicos y de una especie de crustáceo bentónico, todos de alto nivel trófico del Parque Nacional Marino Las Baulas. Mediante digestión química e inspección visual se extrajeron microplásticos del sistema digestivo de 56 individuos. Un total de 90 piezas fueron extraídas del 89% de los peces (93% fibras) con 3,75±1,70 (SD) microplástico/pez. Se determinó una cantidad significativamente menor en los crustáceos con un total de 58 piezas extraídas del 76% de los individuos analizados con 2,64±1,36 (CF) microplástico/jaiba. Se realiza una búsqueda de microplásticos en tejidos musculares mediante la técnica de histología y se encontraron lesiones en el tejido muscular de los peces, pero los resultados no fueron atribuibles a MP, por ende, no se ahondará en estos datos. Este artículo reporta la presencia de estos contaminantes en especies marinas de alto nivel trófico en la costa del Pacífico de Costa Rica, lo cual confirma la afectación por plásticos en la zona de estudio, reforzándose la necesidad de una gestión adecuada de los residuos sólidos generados por la población, tanto en la zona terrestre como en la zona marítima.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The ingestion of microplastics has been reported in various marine species, however, the degree of contamination in the systems and the biota associated with them is little known. This study presents the results of the presence of microplastics in seven species of pelagic fish and one species of benthic crustacean, all high trophic level from Las Baulas Marine National Park. By chemical digestion and visual inspection, microplastics were extracted from the digestive system of 56 individuals. A total of 90 pieces were extracted from 89% of the fish (93% fibers) with 3.75 ± 1.70 (SD) microplastic / fish. A significantly lower quantity was obtained in crustaceans with a total of 58 pieces extracted from 76% of the individuals analyzed with 2.64 ± 1.36 (CF) microplastic / crab. A search for microplastics in muscle tissues was carried out using the histology technique and lesions were found in the muscle tissue of the fish, but the results were not attributable to MP, therefore, these data will not be delved into. This article reports the presence of these pollutants in marine species with a high trophic level on the Pacific coast of Costa Rica, which confirms the impact by plastics in the study area, reinforcing the need for an integral solid waste management system.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Microplástico]]></kwd>
<kwd lng="es"><![CDATA[pelágico]]></kwd>
<kwd lng="es"><![CDATA[biota marina]]></kwd>
<kwd lng="es"><![CDATA[carnívoros]]></kwd>
<kwd lng="es"><![CDATA[digestión química]]></kwd>
<kwd lng="en"><![CDATA[Pelagic]]></kwd>
<kwd lng="en"><![CDATA[marine biota]]></kwd>
<kwd lng="en"><![CDATA[carnivorous]]></kwd>
<kwd lng="en"><![CDATA[chemical digestion]]></kwd>
</kwd-group>
</article-meta>
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