<?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>S2007-90282016000300421</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Frecuencia de morfotipos africanizados y europeos de Apis mellifera en Ensenada y Mexicali, Baja California]]></article-title>
<article-title xml:lang="en"><![CDATA[Frequency of morphotypes africanized and european of Apis mellifera in Ensenada and Mexicali, Baja California]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alaniz-Gutiérrez]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Salado]]></surname>
<given-names><![CDATA[Nicolás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ail-Catzim]]></surname>
<given-names><![CDATA[Carlos Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velazco-López]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Guerrero Unidad Académica de Medicina Veterinaria y Zootecnia No. 2 ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Baja California Instituto de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Mexicali Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>3</volume>
<numero>9</numero>
<fpage>421</fpage>
<lpage>426</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282016000300421&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282016000300421&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282016000300421&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se comparó la frecuencia de morfotipos africanizados y europeos de abejas melíferas en dos municipios de Baja California. Se estudiaron 47 colonias en Mexicali y 34 en Ensenada, además de 11 enjambres silvestres migratorios capturados en Mexicali y cuatro en Ensenada. Se seleccionaron 10 abejas de cada colonia y enjambre, se midió la longitud del ala delantera y del fémur de la pata trasera derecha de cada abeja para discriminar morfotipos europeos y africanizados mediante la técnica morfométrica FABIS. Los resultados indican que en Mexicali 91.49 % de las colonias de abejas presentan morfotipos africanizados, mientras que en Ensenada es de 67.65 %. Esta diferencia en la proporción de africanización puede estar relacionada con las condiciones climáticas, geográficas y prácticas de manejo. Se recomienda sustituir las abejas reinas cada año, usando materiales genéticos seleccionados de origen europeo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The frequency of Africanized and European honey bee morphotypes were compared in two municipalities of Baja California, Mexico. 47 and 34 colonies of Mexicali and Ensenada were studied respectively, including 11 swarms captured in Mexicali and four in Ensenada. Ten bees from each colony and swarm were selected, forewing length and the femur of the right hind paw of each bee was measured. FABIS morphometric techniques were used to discriminate between European and Africanized morphotypes. The results indicated that in Mexicali 91.49 % of the colonies of bees presented Africanized morphotypes, while in Ensenada 67.65 % of the bee colonies had Africanized morphotypes. This difference in the proportion of africanization could be related to climatic and geographic conditions as well as management practices. It is recommended to replace the queens bees annually, using genetic material selected for a European origin.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Abeja africanizada]]></kwd>
<kwd lng="es"><![CDATA[apicultura]]></kwd>
<kwd lng="es"><![CDATA[apiario]]></kwd>
<kwd lng="es"><![CDATA[FABIS]]></kwd>
<kwd lng="es"><![CDATA[morfométrico]]></kwd>
<kwd lng="en"><![CDATA[Africanized honey bee]]></kwd>
<kwd lng="en"><![CDATA[apiary]]></kwd>
<kwd lng="en"><![CDATA[beekeeping]]></kwd>
<kwd lng="en"><![CDATA[FABIS]]></kwd>
<kwd lng="en"><![CDATA[morphometrics]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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