<?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>S1870-34532023000100305</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2023.94.4265</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Concentración de oligoelementos metálicos (cobre y zinc) en músculo e hígado del cazón picudo del Atlántico (Rhizoprionodon terraenovae), capturado en el litoral de Campeche, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Concentration of trace elements (Copper and Zinc) in muscle and liver of the Atlantic sharpnose shark (Rhizoprionodon terraenovae), captured off the coast of Campeche, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baños-Baños]]></surname>
<given-names><![CDATA[Joana J.]]></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[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[Páez-Osuna]]></surname>
<given-names><![CDATA[Federico]]></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-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Campeche Facultad de Ciencias Químico Biológicas ]]></institution>
<addr-line><![CDATA[Campeche Campeche]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Politécnica de Sinaloa Unidad Académica de Ingeniería en Tecnología Ambiental ]]></institution>
<addr-line><![CDATA[Mazatlán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ciencias del Mar y Limnología Unidad Académica Mazatlán]]></institution>
<addr-line><![CDATA[Mazatlán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Campeche Instituto de Ecología, Pesquerías y Oceanografía del Golfo de México ]]></institution>
<addr-line><![CDATA[Campeche Campeche]]></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>94</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532023000100305&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532023000100305&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532023000100305&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo del estudio fue analizar las concentraciones de zinc y cobre en músculo (n = 14) e hígado (n = 72) de Rhizoprionodon terraenovae, especie de tiburón de mayor captura y consumo en el litoral de Campeche, México. De acuerdo con la longitud total (LT), los organismos analizados fueron adultos (LT = 89.8 ± 13.7 cm), quienes presentaron las mayores concentraciones (mg/kg de peso húmedo) de oligoelementos en hígado: zinc (16.23 ± 8.45) &gt; cobre (2.32 ± 0.84); mientras que en músculo: zinc (6.48 ± 2.89) &gt; cobre (0.39 ± 0.14). No se encontraron diferencias significativas en las concentraciones de oligoelementos por tejido entre sexos, ni una correlación significativa con la LT de los organismos. Ambos metales se correlacionaron positivamente en cada tejido. Se registró una biodisminución de 0.22 mg/kg en cobre y 9.58 mg/kg en zinc en el hígado del año 2015 al 2019, probablemente por incremento de metalotioneínas. Las concentraciones de ambos oligoelementos en músculo estuvieron por debajo de los límites máximos establecidos por normas internacionales. En conclusión, los niveles de zinc y cobre, actualmente, no implican riesgos para la salud de R. terraenovae (hígado), ni para la de la sociedad en caso de consumo (músculo).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The aim of this study was to analyze the concentrations of zinc and copper in the muscle (n = 14) and liver (n = 72) of Rhizoprionodon terraenovae, a shark species with the highest capture and consumption rate in the coast of Campeche, México. According to the total length (TL), the organisms analyzed were adults (TL= 89.8 ± 13.7 cm). The highest concentrations (mg/kg of wet weight) of trace elements were in liver: zinc (16.23 ± 8.45) &gt; copper (2.32 ± 0.84); while in muscle: zinc (6.48 ± 2.89) &gt; copper (0.39 ± 0.14). No significant differences were found in concentrations of trace elements by tissue between sexes, nor a significant correlation with the TL of the organisms. Both metals were positively correlated in each tissue. A biodiminution of 0.22 mg/kg in copper and 9.58 mg/kg in zinc was registered in the liver from 2015 to 2019, probably due to an increase of metallothioneins. The concentrations of both trace elements in muscle were below the maximum limits established by International Standards. In conclusion, the levels of zinc and copper currently do not imply risks for the health of R. terraenovae (liver), nor its consumption (muscle) for society.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Golfo de México]]></kwd>
<kwd lng="es"><![CDATA[Contaminación marina]]></kwd>
<kwd lng="es"><![CDATA[Biodisminución]]></kwd>
<kwd lng="es"><![CDATA[Bioacumulación]]></kwd>
<kwd lng="es"><![CDATA[Elasmobranquios]]></kwd>
<kwd lng="en"><![CDATA[Gulf of Mexico]]></kwd>
<kwd lng="en"><![CDATA[Marine pollution]]></kwd>
<kwd lng="en"><![CDATA[Biodiminution]]></kwd>
<kwd lng="en"><![CDATA[Bioaccumulation]]></kwd>
<kwd lng="en"><![CDATA[Elasmobranchs]]></kwd>
</kwd-group>
</article-meta>
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