<?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>0185-3880</journal-id>
<journal-title><![CDATA[Ciencias marinas]]></journal-title>
<abbrev-journal-title><![CDATA[Cienc. mar]]></abbrev-journal-title>
<issn>0185-3880</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-38802023000100121</article-id>
<article-id pub-id-type="doi">10.7773/cm.y2023.3303</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Contrasting the reproductive potential of Narcine entemedor and Rhinoptera steindachneri: 2 viviparous batoid species with different reproductive strategies]]></article-title>
<article-title xml:lang="es"><![CDATA[Contrastando el potencial reproductivo de Narcine entemedor y Rhinoptera steindachneri: 2 especies de batoideos vivíparas con diferentes estrategias reproductivas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Burgos-Vázquez]]></surname>
<given-names><![CDATA[María Itzigueri]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Escalona]]></surname>
<given-names><![CDATA[Víctor Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Camacho]]></surname>
<given-names><![CDATA[Claudia Janetl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peña]]></surname>
<given-names><![CDATA[Renato]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ceballos-Vázquez]]></surname>
<given-names><![CDATA[Bertha Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mejía-Falla]]></surname>
<given-names><![CDATA[Paola Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional Centro Interdisciplinario de Ciencias Marinas ]]></institution>
<addr-line><![CDATA[La Paz Baja California Sur]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Baja Marine Science Project AC  ]]></institution>
<addr-line><![CDATA[Ensenada Baja California]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Squalus Foundation  ]]></institution>
<addr-line><![CDATA[Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Wildlife Conservation Society-WCS Colombia  ]]></institution>
<addr-line><![CDATA[Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>49</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-38802023000100121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-38802023000100121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-38802023000100121&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Narcine entemedorandRhinoptera steindachneriare 2 viviparous batoid species of commercial importance on the Pacific coast of Mexico. However, no adequate management plan has been set forth for either of them to ensure sustainable use. The aims of this study were to assess the reproductive potential and the potential rate of population increase (r&#697;) of both species, as well as contrasting their reproductive strategies, to infer how susceptible they are to fishing exploitation. Comparatively, among batoids,N. entemedorfemales have an early age at maturity, relatively high fecundity, and an intermediate lifespan, whileR. steindachnerifemales have an early age at maturity, low fecundity, and a relatively short lifespan. According to our estimates, however, both species have relatively high reproductive potential, whichN. entemedorexhibits by investing energy in maximizing fecundity andR. steindachneriby increasing the embryo&#8217;s body mass. Therefore,N. entemedorhas better capacity to recover from relatively high overfishing (r&#697; = 0.48) in comparison withR. steindachneri(r&#697; = -0.18). The methodology used in this study proved to be a good option to assess the risk of overfishing in species for which there is limited data.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Narcine entemedoryRhinoptera steindachnerison 2 especies de batoideos vivíparas de importancia comercial en la costa mexicana del Pacífico. Sin embargo, ninguna de las 2 cuenta con planes de manejo adecuados para asegurar su uso sustentable. Los objetivos de este estudio fueron evaluar el potencial reproductivo y la tasa potencial de aumento poblacional (r&#697;) de ambas especies, así como contrastar sus estrategias reproductivas para inferir qué tan susceptibles son a la explotación pesquera. Comparativamente, entre los batoideos, las hembras deN. entemedortienen edad de madurez temprana, fecundidad relativamente alta y longevidad intermedia, mientras que las hembras deR. steindachneritienen edad de madurez temprana, fecundidad baja y longevidad relativamente corta. Sin embargo, de acuerdo con las estimaciones de este estudio, ambas especies tienen un potencial reproductivo relativamente alto,N. entemedora través de la inversión de energía para maximizar la fecundidad yR. steindachneria través del incremento de la masa corporal embrionaria. Por lo tanto,N. entemedortiene mejor capacidad para recuperarse de una sobrepesca relativamente alta (r&#697; = 0.48) en comparación conR. steindachneri(r&#697; = -0.18). La metodología utilizada en este estudio demostró ser una buena opción para evaluar el riesgo de sobrepesca en especies para las cuales los datos son limitados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[batoids]]></kwd>
<kwd lng="en"><![CDATA[Torpediniformes]]></kwd>
<kwd lng="en"><![CDATA[Myliobatiformes]]></kwd>
<kwd lng="en"><![CDATA[reproduction]]></kwd>
<kwd lng="en"><![CDATA[fishing pressure]]></kwd>
<kwd lng="es"><![CDATA[batoideos]]></kwd>
<kwd lng="es"><![CDATA[Torpediniformes]]></kwd>
<kwd lng="es"><![CDATA[Myliobatiformes]]></kwd>
<kwd lng="es"><![CDATA[reproducción]]></kwd>
<kwd lng="es"><![CDATA[presión pesquera]]></kwd>
</kwd-group>
</article-meta>
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