<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282020000300114</article-id>
<article-id pub-id-type="doi">10.19136/era.a7n3.2609</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Respuesta de Canthon indigaceus chevrolati Harold a las heces de bovinos tratados con lactonas macrocíclicas]]></article-title>
<article-title xml:lang="en"><![CDATA[Response of Canthon indigaceus chevrolati Harold to the feces of cattle treated with macrocyclic lactones]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Vivas]]></surname>
<given-names><![CDATA[Roger Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Basto-Estrella]]></surname>
<given-names><![CDATA[Gertrudis del S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Novelo]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arcila-Fuentes]]></surname>
<given-names><![CDATA[William]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ojeda-Chi]]></surname>
<given-names><![CDATA[Melina Maribel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trinidad-Martínez]]></surname>
<given-names><![CDATA[Iris]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Wong]]></surname>
<given-names><![CDATA[Jazmín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Yucatán Facultad de Medicina Veterinaria y Zootecnia ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Yucatán Centro de Investigaciones Regionales &#8220;Dr. Hideyo Noguchi&#8221; ]]></institution>
<addr-line><![CDATA[Mérida Yucatán]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>7</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282020000300114&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282020000300114&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282020000300114&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN. Las lactonas macrocíclicas (LM) son fármacos antiparasitarios de uso rutinario en la ganadería bovina tropical. Después de su administración, estos fármacos son eliminados en las heces del animal tratado, causando un efecto tóxico sobre la fauna coprófila que provee servicios ecosistémicos como el reciclaje del excremento para facilitar el retorno de nutrientes al suelo del pastizal. Se realizaron bioensayos para determinar el efecto letal y subletal de heces de bovinos tratados con ivermectina (IVM-1% en dosis de 0.2 mg kg-1 p.v. e IVM-3.15% en dosis de 0.63 mg kg-1 p.v.) y moxidectina (MOX-1% en dosis de 0.2 mg kg-1 p.v. y MOX-10% en dosis de 1.0 mg kg-1 p.v.) sobre el escarabajo estercolero Canthon indigaceus chevrolati, una especie que habita los sistemas ganaderos del trópico. El excremento de los animales tratados se recuperó a los -1, 5 y 14 días postratamiento, para ser expuesto a parejas de C. i. chevrolati en el laboratorio y determinar su efecto sobre las variables: número de bolas nido construidas, número de imagos emergidos, número de días a la emergencia de imagos, gramos de excremento consumido y proporción de escarabajos emergidos en cada uno de los diferentes tratamientos evaluados. No se encontraron efectos letales ni subletales en los diferentes bioensayos realizados. Los resultados sugieren que esta especie de escarabajo estercolero presenta algún tipo de tolerancia (natural o inducida) a la IVM y a la MOX.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT. Macrocyclic lactones (ML) are antiparasitic drugs routinely used in tropical cattle farming. After its administration the drug is eliminated in the animal&#8217;s feces, causing a toxic effect on the beneficial fauna that provides ecosystem services, including the recycling of excrement to facilitate the return of nutrients to the grassland soil. Bioassays were carried out to determine the lethal and sublethal effect of feces from cattle treated with ivermectin (IVM-1% on a dose of 0.2 mg kg-1 l.w. and IVM-3.15% on a dose of 0.63 mg kg-1 l.w.) and moxidectin (MOX-1% on a dose of 0.2 mg kg-1 l.w. and MOX-10% on a dose of 1.0 mg kg-1 l.w.) on the dung beetle Canthon indigaceus chevrolati, an inhabitant species of tropical cattle systems. The feces of the treated animals were recovered at -1, 5, and 14 days post-treatment to be exposed to couples of C. i. chevrolati in the laboratory and determine its effect on the variables: number of nest balls built, number of imagoes that emerged, number of days to the emergence of imagoes, total grams of excrement consumed, and the proportion of emerged beetles in each of the different treatments evaluated. No lethal or sublethal effects were found in the different bioessays carried out. The results of this study suggest for the first time that this beetle is showing some type of tolerance (natural or induced) to IVM and MOX.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Antiparasitarios]]></kwd>
<kwd lng="es"><![CDATA[ganadería]]></kwd>
<kwd lng="es"><![CDATA[ivermectina]]></kwd>
<kwd lng="es"><![CDATA[moxidectina]]></kwd>
<kwd lng="es"><![CDATA[Scarabaeidae]]></kwd>
<kwd lng="en"><![CDATA[Antiparasitic]]></kwd>
<kwd lng="en"><![CDATA[cattle]]></kwd>
<kwd lng="en"><![CDATA[ivermectin]]></kwd>
<kwd lng="en"><![CDATA[moxidectin]]></kwd>
<kwd lng="en"><![CDATA[Scarabaeidae]]></kwd>
</kwd-group>
</article-meta>
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