<?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>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982018000100001</article-id>
<article-id pub-id-type="doi">10.17129/botsci.1031</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Evaluation of the symmetric effect of antagonists in the floral morphs of the distylic shrub Bouvardia ternifolia: a field study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salinas-Esquivel]]></surname>
<given-names><![CDATA[Luis Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lara]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arizmendi]]></surname>
<given-names><![CDATA[María del Coro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Tlaxcala  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Estudios Superiores Iztacala ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2018</year>
</pub-date>
<volume>96</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>10</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982018000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982018000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982018000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background:  Heterostyly is a genetic polymorphism characterized by a system of sporophyte auto-incompatibility in which the plant populations show two (distyly) or three (tristyly) floral morphs. This reproductive system is known as a promoter of cross-pollination, assuming similar reproductive success between morphs.  Hypothesis:  For this assumption to take place, the pollinators must respond in a similar manner to attraction floral traits in both morphs, maintaining a symmetric flow of pollen. We hypothesize that floral damage by antagonists should correspond to similarities or differences in attractiveness among floral morphs.  Studied species:  We tested this hypothesis in the distylous shrub Bouvardia ternifolia (Rubiaceae).  Methods:  We evaluated the magnitude of the nectar theft, foliar herbivory, and seed predation by assessing individual plants of both floral morphs throughout their flowering period (June-July 2015) under natural conditions. At the end of the flowering season, we quantified fruit and seed production.  Results:  The intensity of the herbivore and nectar thieves in this distylous population is similar between morphs, as well as the size of their floral displays. The number of seeds and fruits produced was also similar between morphs.  Conclusions:  Our study showed that selection pressures imposed by antagonists were similar to both floral morphs in the studied population of Bouvardia ternifolia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes:  La heterostilia es un polimorfismo genético caracterizado por un sistema de autoincompatibilidad esporofítica, en donde las poblaciones de plantas presentan dos (diestilia) o tres (triestilia) morfos florales. Este sistema reproductivo es reconocido por promover la fecundación cruzada, y asume un éxito reproductivo similar entre morfos.  Hipótesis:  Para que este supuesto se cumpla los polinizadores deben responder de forma similar ante los rasgos florales de atracción para mantener un flujo simétrico de polen entre los morfos florales. Bajo este escenario, hipotetizamos que, si los morfos difieren o no en atracción, el daño por antagonistas debería corresponder a estas similitudes o diferencias entre morfos en atractividad.  Especie de estudio:  Pusimos a prueba esta predicción en el arbusto diestílico Bouvardia ternifolia (Rubiaceae).  Método:  A través del seguimiento de plantas individuales de ambos morfos florales a lo largo de su periodo de floración (junio-julio 2015) y bajo condiciones naturales, evaluamos la magnitud del robo de néctar, la herbivoría foliar, y la depredación de semillas. Al final de la temporada de floración, cuantificamos los frutos y semillas producidos. Asimismo, en estas plantas evaluamos la disponibilidad de flores abiertas a través del estudio para estimar diferencias en el tamaño del despliegue floral entre morfos.  Resultados:  Los resultados demostraron que la intensidad de los efectos de los antagonistas es semejante entre morfos, así como el tamaño de su despliegue floral. También el número de semillas y frutos producidos se mantuvo similar entre morfos.  Conclusiones:  Nuestro estudio demostró que las presiones de selección impuestas por antagonistas son similares en ambos morfos florales en la población estudiada de Bouvardia ternifolia.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Bouvardia ternifolia]]></kwd>
<kwd lng="en"><![CDATA[distyly]]></kwd>
<kwd lng="en"><![CDATA[floral larceny]]></kwd>
<kwd lng="en"><![CDATA[herbivory]]></kwd>
<kwd lng="en"><![CDATA[herkogamy]]></kwd>
<kwd lng="en"><![CDATA[plant-animal interaction]]></kwd>
<kwd lng="en"><![CDATA[seed predation]]></kwd>
<kwd lng="es"><![CDATA[Bouvardia ternifolia]]></kwd>
<kwd lng="es"><![CDATA[depredación de semillas]]></kwd>
<kwd lng="es"><![CDATA[diestilia]]></kwd>
<kwd lng="es"><![CDATA[herbivoría]]></kwd>
<kwd lng="es"><![CDATA[hercogamia]]></kwd>
<kwd lng="es"><![CDATA[interacción planta-animal]]></kwd>
<kwd lng="es"><![CDATA[robo de néctar]]></kwd>
</kwd-group>
</article-meta>
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