<?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>0120-548X</journal-id>
<journal-title><![CDATA[Acta Biológica Colombiana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta biol.Colomb.]]></abbrev-journal-title>
<issn>0120-548X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-548X2021000100005</article-id>
<article-id pub-id-type="doi">10.15446/abc.v26n1.78618</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[TOXICIDAD DE TRES INSECTICIDAS ORGANOFOSFORADOS EN EMBRIONES DE ANUROS A DIFERENTES TEMPERATURAS]]></article-title>
<article-title xml:lang="en"><![CDATA[Toxicity of three organophosphate insecticides in anuran embryos at different temperatures]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[HENAO MUÑOZ]]></surname>
<given-names><![CDATA[Liliana Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[TRIANA VELASQUEZ]]></surname>
<given-names><![CDATA[Teófila María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[GALINDO MARTINEZ]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[BERNAL BAUTISTA]]></surname>
<given-names><![CDATA[Manuel Hernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Tolima Departamento de Biología Grupo de Herpetología, Eco-Fisiología y Etología]]></institution>
<addr-line><![CDATA[Altos de Santa Helena Ibagué]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>26</volume>
<numero>1</numero>
<fpage>5</fpage>
<lpage>11</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-548X2021000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-548X2021000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-548X2021000100005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los efectos de diferentes agroquímicos y de la temperatura han sido temas recurrentes en la investigación en anuros; sin embargo, estas variables se han abordado de manera independiente sin considerar que pueden ejercer una presión simultánea sobre las especies. Por esta razón, este trabajo tiene como objetivo determinar la toxicidad (a través de la Concentración Letal Media -CL50) de los insecticidas organofosforados clorpirifos, diazinón y monocrotofos, bajo tres regímenes térmicos (23, 28 y 33 ± 1 °C) sobre embriones de tres especies de anuros. De acuerdo a los valores de CL50, el insecticida clorpirifos fue el más tóxico, seguido del diazinón y del monocrotofos. Por su parte, de manera general se encontró un incremento de la toxicidad de los insecticidas organofosforados a la temperatura más alta de experimentación (33 °C). Además, el efecto de la temperatura se hizo más notorio para los organismos expuestos al clorpirifos, el insecticida más letal. Estos resultados sugieren un efecto negativo para la fauna acuática de anuros debido al actual uso desmesurado de este tipo de agroquímicos y a su interacción con la temperatura ambiental.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In anurans, the effects of different agrochemicals and temperature have been recurrent topics in research; however, these variables are addressed independently without considering that they can exert a simultaneous pressure on the species. For this reason, this work aims to determine the toxicity (through the Medium Lethal Concentration -LC50) of the organophosphate insecticides: chlorpyrifos, diazinon and monocrotophos, under three thermal regimes (23, 28 and 33 ± 1 °C) on embryos ofthree species of anurans. According to the LC50 values, the chlorpyrifos insecticide was the most toxic, followed by diazinon and monocrotophos. On the other hand, an increase in the toxicity of the organophosphate insecticides studied was generally found at the highest experimental temperature (33 °C). In addition, the effect of temperature became more noticeable for the organisms exposed to chlorpyrifos, the most lethal insecticide. These results suggest a negative effect for the aquatic fauna of anurans due to the current excessive use of this type of agrochemicals and their interaction with environmental temperature.]]></p></abstract>
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<kwd lng="en"><![CDATA[mortality]]></kwd>
<kwd lng="en"><![CDATA[pesticides]]></kwd>
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