<?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>S2007-33642017000300277</article-id>
<article-id pub-id-type="doi">10.12933/therya-17-493</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[One black bear (Ursus americanus) connects the great sierras: Genetic evidence]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camargo-Aguilera]]></surname>
<given-names><![CDATA[Maria Gabriela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lara-Díaz]]></surname>
<given-names><![CDATA[Nalleli E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coronel-Arellano]]></surname>
<given-names><![CDATA[Helí]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-González]]></surname>
<given-names><![CDATA[Carlos A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Querétaro Facultad de Ciencias Naturales ]]></institution>
<addr-line><![CDATA[ Querétaro]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>3</numero>
<fpage>277</fpage>
<lpage>282</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-33642017000300277&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-33642017000300277&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-33642017000300277&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The black bear has inhabited North America for three million years. Two clades diverged during this period: coastal and continental; the continental clade includes two subclasses (western and eastern). The contact between both is a recent event. Because there is a high genetic differentiation between subclasses, the genetic flow of populations between Sierra Madre Oriental and Sierra Madre Occidental is considered as restricted to nonexistent; also, desert environments and human settlements act as a barrier. There are no recent records of black bears in Durango, so the capture of an individual from there presents the opportunity to test whether there is a possible connection between the populations of Sierra Madre Occidental and Sierra Madre Oriental. Our objective was to determine the geographic origin of this individual and validate whether there is a likely connection between populations from both mountain ranges. A black bear specimen was captured in Felipe Carrillo Puerto, municipality of Guadalupe Victoria, Durango. This specimen was sedated. Tissue samples from ear, hair and excrement were collected; samples of mtDNA were extracted and amplified, and two 418-bp sequences were obtained. The haplotype was characterized by a neutrality test of the control region. To determine the origin of the specimen, GenBank was searched for matches with haplotypes previously described and geographically characterized. Six 418-bp sequences were successfully amplified. The neutrality test yielded a single haplotype, with a 99.32 % agreement with haplotype C. Haplotype C has been previously described for the Trans-Pecos region in Texas; accordingly, this haplotype belongs to the eastern subclade. The origin of the black bear specimen captured was Sierra Madre Oriental, based on the presence of haplotype C. This bear traveled at least 250 km to reach the municipality of Guadalupe Victoria. This displacement event indicates that connectivity between black bear populations from both Sierras Madres has been maintained. This distance is similar to displacements previously reported in fragmented environments where a suitable habitat is surrounded by arid zones. However, this displacement took place between two large mountain ranges, rather than within a single mountain range. Genetic diversity, frequency of displacement events between the Sierras, time and distance between displacements, dispersal routes and presence of patches of suitable habitat, are all factors that should be evaluated in order to understand the current dispersal and genetic-flow patterns between the subspecies of bears in Mexico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[El oso negro ha estado presente en Norteamérica desde hace tres millones de años; durante este periodo divergieron dos clados: el costero y el continental. Dentro del clado continental existen dos subclados (occidental y oriental), y el contacto entre ambos se considera un evento reciente. Debido a la alta diferenciación genética entre subclados, se considera que el flujo genético de las poblaciones entre la Sierra Madre Oriental y Occidental es de restringido a inexistente; además, ambientes áridos y los poblados humanos actúan como una barrera. En el estado de Durango no se cuentan con registros recientes de osos negros por lo que la captura de un individuo representa la oportunidad para probar si existe una conexión entre las poblaciones de la Sierra Madre Occidental y la Sierra Madre Oriental. Nuestro objetivo fue determinar el origen geográfico de este individuo y validar si existe una probable conexión entre poblaciones de ambas serranías. Se capturó un individuo de oso negro en el poblado Felipe Carrillo Puerto, municipio de Guadalupe Victoria, en Durango. El individuo fue químicamente inmovilizado y se tomaron muestras de tejido de la oreja, pelo y excremento. Se llevó a cabo la extracción de ADN mitocondrial (ADNmt) y se amplificó. Se obtuvieron dos secuencias de 418 pares de bases. Se caracterizó su haplotipo mediante un análisis de neutralidad de la región control. Para asociar la procedencia del individuo, se hizo una búsqueda en GenBank para determinar coincidencias con haplotipos previamente descritos y caracterizados geográficamente. Se amplificaron con éxito seis secuencias de 418 pb. El análisis de neutralidad arrojó un solo haplotipo, con una concordancia del 99.32 % para el haplotipo C. El haplotipo C fue descrito para la región de Trans-Pecos en Texas, EUA; además, pertenece al subclado oriental. De este modo, la procedencia del oso negro capturado fue asociada a la Sierra Madre Oriental, México. El oso capturado, por el haplotipo encontrado, pertenece a la Sierra Madre Oriental, por lo que se desplazó al menos 250 km para llegar al Municipio de Guadalupe Victoria, Durango. Este evento de dispersión indica que la conectividad entre ambas Sierras Madres para los osos negros se mantiene. Esta distancia es similar a dispersiones previamente reportadas en ambientes fragmentados donde el hábitat adecuado está rodeado por zonas áridas. Sin embargo, este desplazamiento fue entre dos grandes sierras, y no sobre el mismo sistema montañoso. La diversidad genética, la frecuencia de eventos de dispersión entre las Sierras, el tiempo y distancia entre desplazamientos, las rutas de dispersión y la presencia de parches de hábitat adecuado, son factores a evaluar para entender los patrones de dispersión actual y el flujo genético entre las subespecies de osos presentes en México.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Connectivity]]></kwd>
<kwd lng="en"><![CDATA[control region]]></kwd>
<kwd lng="en"><![CDATA[dispersal]]></kwd>
<kwd lng="en"><![CDATA[Durango]]></kwd>
<kwd lng="en"><![CDATA[haplotype C]]></kwd>
<kwd lng="en"><![CDATA[mitochondrial DNA]]></kwd>
<kwd lng="en"><![CDATA[Ursus americanus]]></kwd>
<kwd lng="es"><![CDATA[Connectivity]]></kwd>
<kwd lng="es"><![CDATA[control region]]></kwd>
<kwd lng="es"><![CDATA[dispersal]]></kwd>
<kwd lng="es"><![CDATA[Durango]]></kwd>
<kwd lng="es"><![CDATA[haplotype C]]></kwd>
<kwd lng="es"><![CDATA[mitochondrial DNA]]></kwd>
<kwd lng="es"><![CDATA[Ursus americanus]]></kwd>
</kwd-group>
</article-meta>
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