<?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>1870-7459</journal-id>
<journal-title><![CDATA[Huitzil]]></journal-title>
<abbrev-journal-title><![CDATA[Huitzil]]></abbrev-journal-title>
<issn>1870-7459</issn>
<publisher>
<publisher-name><![CDATA[Sociedad para el Estudio y Conservación de las Aves en México, A.C. (CIPAMEX)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-74592018000100079</article-id>
<article-id pub-id-type="doi">10.28947/hrmo.2018.19.1.309</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Prevalencia parasitaria en el gorrión altiplanero (Spizella wortheni): especie endémica de México y en peligro de extinción]]></article-title>
<article-title xml:lang="en"><![CDATA[Parasite prevalence in Worthen&#8217;s Sparrow (Spizella wortheni): Mexican endemic and endangered species]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Canales-del-Castillo]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Rangel]]></surname>
<given-names><![CDATA[Cecilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruvalcaba-Ortega]]></surname>
<given-names><![CDATA[Irene]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Rojas]]></surname>
<given-names><![CDATA[José I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán-Velasco]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[San Nicolás de los Garza Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<volume>19</volume>
<numero>1</numero>
<fpage>79</fpage>
<lpage>84</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-74592018000100079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-74592018000100079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-74592018000100079&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El gorrión altiplanero o de Worthen (Spizella wortheni) es endémico del altiplano mexicano y debido a su limitada distribución y tamaño poblacional es considerada una especie en peligro de extinción a nivel nacional e internacional. De manera general, las especies en peligro han estado expuestas, al menos históricamente, a una fuerte reducción en su tamaño poblacional y su diversidad genética, factores que en su conjunto aumentan el riesgo y susceptibilidad a infecciones. Por lo tanto, con el propósito de determinar dicha propensión en esta especie, analizamos la prevalencia de parásitos intestinales a partir de muestras fecales en 11 individuos, así como hemoparásitos, hematocrito y cuantificación diferencial de leucocitos a partir una muestra sanguínea. Los resultados mostraron que el 91% de los individuos presentaron por lo menos un taxón de parásitos intestinales, siendo el género Cryptosporidium (64%) el de mayor prevalencia, seguido por Eimeria (55%) y Ascaridia (9%). Sin embargo, los valores medios de oocistos/huevo por gramo de heces fecales indicaron una baja infección parasitaria. Además, no se observaron parásitos sanguíneos y el conteo de células blancas fue similar a lo previamente reportado para otras especies de la familia Emberizidae y Passerellidae.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Worthen&#8217;s sparrow is an endemic bird of the Mexican Plateau that due to its limited distribution and population size is considered to be endangered, both nationally and globally. In general, species at risk have been, at least historically, under population size and genetic diversity reductions, which are factors that can act together to increase infections risk and susceptibility. Therefore, with the purpose to determine such propensity in this species, we analyzed the intestinal parasitic infection through fecal samples from 11 individuals, and hemoparasites, hematocrit and differential leukocyte quantification from one sample. Results indicated that 91% of the samples had one parasite taxon, with genus Cryptosporidium showing the highest prevalence (64%), followed by Eimeria (55%), and Ascaridia (9%). However, mean values of oocysts/eggs per gram indicated a low parasitic infection. We found no blood parasites, and the white blood cell counts were among reference values for other sparrow species.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Gorrión altiplanero]]></kwd>
<kwd lng="es"><![CDATA[Spizella wortheni]]></kwd>
<kwd lng="es"><![CDATA[peligro de extinción]]></kwd>
<kwd lng="es"><![CDATA[parásitos fecales]]></kwd>
<kwd lng="es"><![CDATA[hemoparásitos]]></kwd>
<kwd lng="es"><![CDATA[conteo diferencial de leucocitos]]></kwd>
<kwd lng="en"><![CDATA[Worthen&#8217;s sparrow]]></kwd>
<kwd lng="en"><![CDATA[Spizella wortheni]]></kwd>
<kwd lng="en"><![CDATA[endangered species]]></kwd>
<kwd lng="en"><![CDATA[fecal parasites]]></kwd>
<kwd lng="en"><![CDATA[hemoparasites]]></kwd>
<kwd lng="en"><![CDATA[differential leucocyte count]]></kwd>
</kwd-group>
</article-meta>
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