<?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>0188-4999</journal-id>
<journal-title><![CDATA[Revista internacional de contaminación ambiental]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Int. Contam. Ambient]]></abbrev-journal-title>
<issn>0188-4999</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-49992023000100138</article-id>
<article-id pub-id-type="doi">10.20937/rica.54635</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Primer registro de concentración de zinc y cobre en Sphyrna tiburo: bioindicador de la salud de la costa de Campeche, México]]></article-title>
<article-title xml:lang="en"><![CDATA[First record of copper and zinc concentrations in Sphyrna tiburo: bioindicator of Campeche, Mexico, coast health]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Esparza-May]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bergés-Tiznado]]></surname>
<given-names><![CDATA[Magdalena E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bojórquez-Sánchez]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Rojas]]></surname>
<given-names><![CDATA[Yassir E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Páez-Osuna]]></surname>
<given-names><![CDATA[Federico]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Ecología, Pesquerías y Oceanografía del Golfo de México  ]]></institution>
<addr-line><![CDATA[Campeche ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Politécnica de Sinaloa  ]]></institution>
<addr-line><![CDATA[ Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ciencias del Mar y Limnología ]]></institution>
<addr-line><![CDATA[Mazatlán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>39</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992023000100138&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992023000100138&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992023000100138&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se evaluó la concentración de zinc (Zn) y cobre (Cu) en 43 muestras de hígado y 77 de músculos del tiburón cabeza de pala (Sphyrna tiburo), como indicador del estado de salud de las costas de Campeche durante los años 2015, 2016 y 2019. Las comparaciones entre tejidos muestran consistentemente una menor concentración en el músculo (Zn = 19.8 ± 20.3 mg/kg; Cu = 0.67 ± 0.02 mg/kg) en comparación con el hígado (Zn = 31.0 ± 18.7 mg/kg; Cu = 3.56 ± 0.97 mg/kg). La concentración de Zn en el hígado fue influenciada por el sexo, ya que los niveles de Zn en el hígado de las hembras (34.8 ± 19.50 mg/kg) fue significativamente mayor que en el de los machos (24.5 ± 15.95 mg/kg). Se observó una disminución en la concentración de ambos metales a través de los años tanto en hígado (Zn 2015 = 32.5, 2016 = 31.8, 2019 = 14.7 y Cu 2015 = 3.36, 2016 = 3.89, 2019 = 3.18), como en músculo (Zn2015 = 15.0, 2016 =32.0, 2019 = 4.20 y Cu 2015 = 0.69, 2016 = 0.67, 2019 = 0.24). La concentración de Zn y Cu en músculo no sobrepasó los límites máximos permitidos por normas internacionales para consumo humano (Zn = 40 mg/kg, Cu = 10 mg/kg), por lo tanto, se puede concluir que S. tiburo como bioindicador de salud referente a estos dos oligoelementos, actualmente no representa un riesgo para la salud de los consumidores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Zinc (Zn) and copper (Cu) concentrations were evaluated in 43 samples of liver and 77 of the muscle of the bonnethead shark (Sphyrna tiburo) as an indicator of the health status of Campeche coasts in the years 2015, 2016, and 2019. Inter-tissue comparisons consistently show a lower concentration in muscle (Zn = 19.8 ± 20.3 mg/kg; Cu = 0.67 ± 0.02 mg/kg) compared to liver (Zn = 31.0 ± 18.7 mg/kg; Cu = 3.56 ± 0.97 mg/kg). Zn concentration in the liver was influenced by sex since levels in the liver of females (34.8 ± 19.50 mg/kg) were significantly higher than in males (24.5 ± 15.95 mg/kg). A decrease in the concentration of both metals was observed over the years both in the liver (Zn 2015 = 32.5, 2016 = 31.8, 2019 = 14.7 and Cu 2015 = 3.36, 2016 = 3.89, 2019 = 3.18) and in muscle (Zn 2015 = 15.0, 2016 = 32.0, 2019 = 4.20 and Cu 2015 = 0.69, 2016 = 0.67, 2019 = 0.24). The concentration of Zn and Cu in muscle did not exceed the maximum permissible limits by international standards for human consumption (Zn = 40 mg/kg, Cu = 10 mg/kg). Therefore, S. tiburo, as a bioindicator regarding these two trace elements, currently does not represent a health risk to consumers.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[tiburón]]></kwd>
<kwd lng="es"><![CDATA[oligoelementos]]></kwd>
<kwd lng="es"><![CDATA[Golfo de México]]></kwd>
<kwd lng="es"><![CDATA[metales]]></kwd>
<kwd lng="en"><![CDATA[shark]]></kwd>
<kwd lng="en"><![CDATA[trace elements]]></kwd>
<kwd lng="en"><![CDATA[Gulf of Mexico]]></kwd>
<kwd lng="en"><![CDATA[metals]]></kwd>
</kwd-group>
</article-meta>
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