<?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>S0185-38802018000300155</article-id>
<article-id pub-id-type="doi">10.7773/cm.v44i3.2851</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Burrowing activity of the Neohelice granulata crab (Brachyura, Varunidae) in southwest Atlantic intertidal areas]]></article-title>
<article-title xml:lang="es"><![CDATA[Actividad cavadora del cangrejo Neohelice granulata (Brachyura, Varunidae) en sitios intermareales del atlántico sudoccidental]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Angeletti]]></surname>
<given-names><![CDATA[Sabrina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cervellini]]></surname>
<given-names><![CDATA[Patricia M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lescano]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional del Sur Instituto de Ciencias Biológicas y Biomédicas del Sur ]]></institution>
<addr-line><![CDATA[Bahía Blanca ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional del Sur Departamento de Geología ]]></institution>
<addr-line><![CDATA[ Bahía Blanca]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Comisión de Investigaciones Científicas de la Provincia de Buenos Aires  ]]></institution>
<addr-line><![CDATA[ La Plata]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>44</volume>
<numero>3</numero>
<fpage>155</fpage>
<lpage>167</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-38802018000300155&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-38802018000300155&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-38802018000300155&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The burrowing and semiterrestrial crab Neohelice granulata actively and constantly builds its burrows in the intertidal zone of the Bahía Blanca Estuary during low tide. Differences in structural morphology of N. granulata burrows and burrowing activities in contrasting microhabitats (saltmarsh and mudflat) were analyzed and related to several conditions, such as tide level, substrate type, sediment properties, and population density. In the mudflat the higher density of total burrows in autumn (172 burrows·m-2) was associated with molt timing, and the higher density of active burrows in summer (144 burrows·m-2) was associated with reproductive migration. Sediments from biogenic mounds (removed by crabs) showed higher water content and penetrability than surface sediments (control), suggesting that bioturbation increases the values of these parameters. Grain size distribution profiles and mineralogical composition did not vary between microhabitats or between seasons. Burrows were all tunnel-shaped and only those from the saltmarsh had chambers inside the tunnels, possibly used for reproductive purposes. Burrows from the saltmarsh had narrow entrances and deep tunnels, and burrows from the mudflat presented very narrow entrances and surface tunnels. Differences in burrow features and burrow activity of N. granulata between microhabitats were confirmed and associated with biotic and abiotic factors, indicating that this species has an adaptive burrowing behavior.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El cangrejo cavador y semiterrestre Neohelice granulata construye sus cuevas activamente y constantemente en la zona intermareal del estuario de Bahía Blanca durante la marea baja. Se analizaron diferencias en la morfología estructural de las cuevas y la actividad excavadora de N. granulata en microhábitats contrastantes (marisma y planicie de marea) y se relacionaron con diversas condiciones, como el nivel de las mareas, el tipo de sustrato, las propiedades del sedimento y la densidad poblacional. En la planicie de marea la mayor densidad de cuevas totales en el otoño (172 cuevas·m-2) se relacionó con el fenómeno de muda, y la mayor densidad de cuevas activas durante el verano (144 cuevas·m-2) se relacionó con la migración reproductiva. Los sedimentos de los montículos biogénicos (removidos por cangrejos) presentaron mayor contenido de agua y penetrabilidad que los sedimentos superficiales (control), lo cual sugiere que la bioturbación incrementa los valores de estos parámetros. La granulometría y mineralogía no variaron entre los microhábitats ni entre las estaciones. Todas las cuevas presentaron forma de túnel y sólo aquellas provenientes de la marisma presentaron cámaras dentro de los túneles, posiblemente usadas con propósitos reproductivos. Las cuevas de la marisma exhibieron entradas angostas y túneles profundos, y las de la planicie de marea presentaron entradas muy angostas y túneles superficiales. Se confirmaron diferencias en las características de las cuevas y en la actividad excavadora de N. granulata entre los distintos ambientes y se relacionaron con los factores bióticos y abióticos, lo cual indica que esta especie tiene un comportamiento excavador adaptativo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[bioturbation]]></kwd>
<kwd lng="en"><![CDATA[burrowing organisms]]></kwd>
<kwd lng="en"><![CDATA[brackish-water environment]]></kwd>
<kwd lng="en"><![CDATA[ecological zonation]]></kwd>
<kwd lng="en"><![CDATA[sediments]]></kwd>
<kwd lng="es"><![CDATA[bioturbación]]></kwd>
<kwd lng="es"><![CDATA[organismos excavadores]]></kwd>
<kwd lng="es"><![CDATA[ambientes salobres]]></kwd>
<kwd lng="es"><![CDATA[zonación ecológica]]></kwd>
<kwd lng="es"><![CDATA[sedimentos]]></kwd>
</kwd-group>
</article-meta>
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