<?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>0034-7744</journal-id>
<journal-title><![CDATA[Revista de Biología Tropical]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. biol. trop]]></abbrev-journal-title>
<issn>0034-7744</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-77442015000500307</article-id>
<article-id pub-id-type="doi">10.15517/rbt.v63i1.23110</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Abundancia, reproducción y tallas del tiburón martillo Sphyrna lewini (Carcharhiniformes: Sphyrnidae) en la pesca artesanal de Golfo Dulce, Pacífico de Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[Abundance, reproduction and length of scalloped hammerhead shark Sphyrna lewini (Carcharhiniformes: Sphyrnidae) in the artisanal fishery in Golfo Dulce, Pacific of Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zanella]]></surname>
<given-names><![CDATA[Ilena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Garro]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Asociación Conservacionista Misión Tiburón  ]]></institution>
<addr-line><![CDATA[Playas del Coco Guanacaste]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2015</year>
</pub-date>
<volume>63</volume>
<fpage>307</fpage>
<lpage>317</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0034-77442015000500307&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0034-77442015000500307&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0034-77442015000500307&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En Golfo Dulce, Costa Rica, se han reportado capturas incidentales de S. lewini por pescadores artesanales. Debido a esto, este estudio tiene como objetivo caracterizar las capturas del tiburón martillo en Golfo Dulce, y recomendar pautas de manejo. Entre mayo 2010 y mayo 2011 se recopiló información biológica-pesquera de tiburones capturados durante faenas artesanales en Golfo Dulce. Se estimó la captura por unidad de esfuerzo a lo largo del año. Se analizaron un total de 315 tiburones, todos juveniles, con una longitud total media de 74.3±17.4cm. Las longitudes totales y la abundancia relativa tuvieron tendencias opuestas: en julio-agosto cuando las longitudes totales medias fueron menores, las capturas por unidad de esfuerzo fueron mayores. Debido a esto, se recomienda implementar vedas temporales durante el periodo de nacimiento de las crías de tiburón martillo (junio-agosto) en sitios donde se reportaron las mayores capturas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Incidental catch of S. lewini by artisanal fishermen in Golfo Dulce, Costa Rica, suggest that this could be one of the coastal locations used by the species. This study aims to characterize the scalloped hammerhead shark population in Golfo Dulce, in order to best guide management actions for the conservation and sustainable use of the species. Fisheries-dependent biological data (size-TL, sex, reproductive status) were gathered for S. lewini between May 2010 and May 2011 in the communities of Puerto Jimenez and Pavones, Golfo Dulce during artisanal fishing trips. Catch per unit effort (CPUE) throughout the year was also estimated from catch data. We sampled a total of 315 sharks. Mean total length was estimated at 74.3±17.4cm. Both pups and juveniles were reported, which presented a male: female ratio of 1:1.2 (p&gt;0.05). Total length and relative abundance of S. lewini had opposite tendencies, with the smallest TL (64cm) recorded during July-August, when CPUE was highest. (0.0075). Temporary closures from June to August are therefore recommended at areas of highest reported catch (Pique Fijo, Los Bajos y La Ciénaga), in order to protect newly born S. lewini, and promote the sustainability of the species in the ETPS Closures should be complemented with a long-term study that can further clarify whether Golfo Dulce is a nursery area for S. lewini. Rev. Biol. Trop. 63 (Suppl. 1): 307-317. Epub 2015 April 01.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Tiburón martillo]]></kwd>
<kwd lng="es"><![CDATA[Sphyrna lewini]]></kwd>
<kwd lng="es"><![CDATA[área de crianza]]></kwd>
<kwd lng="es"><![CDATA[pesca artesanal]]></kwd>
<kwd lng="es"><![CDATA[Golfo Dulce]]></kwd>
<kwd lng="en"><![CDATA[Scalloped hammerhead shark]]></kwd>
<kwd lng="en"><![CDATA[Sphyrna lewini]]></kwd>
<kwd lng="en"><![CDATA[nursery area]]></kwd>
<kwd lng="en"><![CDATA[artisanal fishery]]></kwd>
<kwd lng="en"><![CDATA[Gofo Dulce]]></kwd>
</kwd-group>
</article-meta>
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