<?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>2007-3364</journal-id>
<journal-title><![CDATA[Therya]]></journal-title>
<abbrev-journal-title><![CDATA[Therya]]></abbrev-journal-title>
<issn>2007-3364</issn>
<publisher>
<publisher-name><![CDATA[Asociación Mexicana de Mastozoología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-33642019000300235</article-id>
<article-id pub-id-type="doi">10.12933/therya-19-884</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Differences in metal content in liver of Heteromyids from deposits with and without previous mining operations]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez-Rodríguez]]></surname>
<given-names><![CDATA[Lía]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez-Castañeda]]></surname>
<given-names><![CDATA[Sergio Ticul]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigaciones Biológicas del Noroeste  ]]></institution>
<addr-line><![CDATA[La Paz Baja California Sur]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>10</volume>
<numero>3</numero>
<fpage>235</fpage>
<lpage>242</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-33642019000300235&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-33642019000300235&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-33642019000300235&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Some rodents of the family Heteromyidae can survive without drinking water, as they obtain it from food. All these species have in common that they eat seeds and fruits. The content of trace metals in food varies depending on the local geology and anthropogenic activities. Baja California Sur has mineral deposits that have been exploited; thus, the metals released may be incorporated into seeds and fruits that are consumed by Heteromyidae. Therefore, metal content in the liver is expected to reflect the presence of mining in soil where these rodents thrive. Individuals from different species of Heteromyidae were collected at sites with mineral deposits; these were divided into two groups: rodents captured in sites with a history of mining operations (Santa Rosalia, San Juan de la Costa, and El Triunfo), and rodents captured in areas with no mining activities (El Vizcaíno, Punta Abreojos, Magdalena Island, and Santiago). The liver of these rodents was excised and its manganese, copper, cadmium, lead, zinc, nickel, and iron contents were determined using atomic absorption spectrophotometry. Manganese was the element that showed the highest significant differences between species, followed by zinc and copper. Iron and cadmium showed the lowest differences. Nickel and lead showed no differences. Chaetodipus arenarius showed significant differences between sites in copper and lead content; C. spinatus did not show significant differences for manganese, copper, nickel, and iron, but it did for cadmium and lead content. Differential accumulation of metals occurs across species. These results indicate that the same species could be used for comparative purposes in pollution monitoring. The comparison of different heteromid species, despite their sharing similar feeding habits and belonging to the same family, can lead to misinterpretation due to the variability of the results. This is probably due to the requirements and tolerances regarding essential elements, such as manganese and zinc, to or tolerance to non-essential elements such as cadmium and lead, which may vary across species.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Algunas especies de roedores de la familia Heteromyidae pueden sobrevivir sin tomar agua debido a que la obtienen del alimento que consumen. Todas las especies de esta familia, tienen en común que se alimentan de semillas y frutos. El contenido de metales en el alimento puede variar dependiendo de la geología y las actividades antropogénicas que se desarrollen en el yacimiento donde habiten. En Baja California Sur se encuentran yacimientos de minerales que han sido explotados a través de la minería. Los metales liberados se pueden incorporar en las semillas y frutos de los que se alimentan los Heteromyidae. Por lo tanto, es de esperar que el contenido de metales en el hígado de los roedores refleje la presencia de minería en el habitat en que viven. Ejemplares de diferentes especies de Heteromyidae fueron colectados en sitios con yacimientos de minerales los cuales se dividieron en dos grupos. Con antecedentes de actividad minera (Santa Rosalía, San Juan de la Costa y El Triunfo) y sin actividad minera (El Vizcaíno, Punta Abreojos, Isla Magdalena y Santiago). Los hígados de los roedores fueron extraídos y analizados en su contenido de manganeso, cobre, cadmio, plomo, zinc, níquel y hierro por espectrofotometría de absorción atómica. El manganeso fue el elemento que presentó mayor cantidad de diferencias significativas entre especies, seguido por el zinc y el cobre y en menor medida de el hierro y el cadmio. El níquel y el plomo no presentaron diferencias. Chaetodipus arenarius presentó diferencias significativas entre yacimientos en su contenido de cobre y plomo, mientras que C. spinatus no presentó diferencias significativas de manganeso, cobre, níquel y hierro, pero si en cadmio y plomo. Se observa acumulación diferencial de metales entre especies. Los resultados indican que una misma especie debe ser utilizada para fines comparativos en monitoreos de contaminación. Comparar distintas especies, aunque todos sean heterómidos y tengan alimentaciones similares, puede causar interpretaciones erróneas. Esto se debe a que los requerimientos y tolerancias de elementos esenciales para la vida, como son manganeso y zinc, o la tolerancia hacia elementos no esenciales como cadmio y plomo, pueden variar entre especies.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[bioaccumulation]]></kwd>
<kwd lng="en"><![CDATA[bioindicators]]></kwd>
<kwd lng="en"><![CDATA[chemical pollution]]></kwd>
<kwd lng="en"><![CDATA[rodents]]></kwd>
<kwd lng="en"><![CDATA[arid soils]]></kwd>
</kwd-group>
</article-meta>
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