<?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>S0034-77442017000401381</article-id>
<article-id pub-id-type="doi">10.15517/rbt.v65i4.27239</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Ecología y reproducción de Opsanus beta (Actinopterygii: Batrachoididae) en la Laguna de Alvarado, Veracruz, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Ecology and reproduction of Opsanus beta (Actinopterygii: Batrachoididae) in the Alvarado Lagoon, Veracruz, Mexico.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[Jonathan Franco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santes González]]></surname>
<given-names><![CDATA[Alma G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abarca Arenas]]></surname>
<given-names><![CDATA[Luis G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bedia Sánchez]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrera Escorcia]]></surname>
<given-names><![CDATA[Héctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez Pérez]]></surname>
<given-names><![CDATA[José A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peláez Rodríguez]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Viveros Legorreta]]></surname>
<given-names><![CDATA[José L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,UNAM Laboratorio de Ecología Facultad de Estudios Superiores]]></institution>
<addr-line><![CDATA[Tlalnepantla Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Veracruzana Instituto de Investigaciones Biológicas ]]></institution>
<addr-line><![CDATA[Xalapa Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,UNAM Laboratorio de Zoología Facultad de Estudios Superiores]]></institution>
<addr-line><![CDATA[Tlalnepantla Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>65</volume>
<numero>4</numero>
<fpage>1381</fpage>
<lpage>1396</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0034-77442017000401381&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0034-77442017000401381&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0034-77442017000401381&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Opsanus beta es un habitante permanente del Sistema Lagunar de Alvarado, a pesar de participar en la transferencia energética entre los distintos componentes, no hay información sobre los aspectos ecológicos y reproductivos de esta especie. El presente trabajo se desarrolló, con la finalidad de evaluar aspectos de la biología como estacionalidad, alimentación, proporción de sexos, índice gonadosomático, hepatosomático y factor de condición para ambos sexos, así como la fecundidad y la relación peso-longitud, durante el período de abril 2008 a diciembre 2012. Se registraron los parámetros de temperatura ambiental y del agua, profundidad, salinidad, oxígeno disuelto y pH en cada uno de los seis sitios de recolecta que se ubicaron en el sistema. El análisis de los parámetros ambientales no mostró diferencias significativas entre los años del período de estudio, la salinidad registrada a lo largo del estudio correspondió a un ambiente oligohalino, el resto de los parámetros fisicoquímicos presentó variaciones que pueden explicarse por el patrón climático en el área. Se capturó un total de 519 organismos, 311 (59.9 %) machos y 208 (41.1 %) hembras, el comportamiento de la longitud patrón en los distintos meses muestra que en los machos, la longitud promedio es mayor que en las hembras. El espectro trófico se compone de 13 tipos alimenticios, destacan los crustáceos, moluscos y peces, adicionalmente se observó la práctica de canibalismo en los meses de marzo y abril. Los estadios de maduración gonádica más avanzados se registraron en los meses de noviembre a marzo para los machos, y de noviembre a febrero para las hembras. El IGS registró los valores más altos en los meses de noviembre a abril, el IHS y el FC presentaron un comportamiento inverso al IGS. La fecundidad de esta especie varía de 96 a 428 ovocitos por hembra. La relación peso-longitud por sexo y temporada presentó una mayor tasa de crecimiento (b) para los machos que para las hembras, y un crecimiento de tipo alométrico negativo. La información biológica y ecológica de O. beta en el SLA permite reconocer que esta especie es importante por el papel ecológico que juega en la estructura y dinámica de sus comunidades acuáticas y puede ser utilizada en la propuesta de manejo y aprovechamiento sustentable de este ecosistema.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Opsanus beta is a permanent species in the Alvarado Lagoon System (ALS), Veracruz, and eventhough it is not of economic importance, it might be actively involved in the energy transfer of the system. Currently, there is no information about the reproductive and ecological characteristics of this common fish, so this work aimed to evaluate those aspects, and to contribute with some ecological features. For this, a total of six sampling sites were selected and studied from April 2008 to December 2012. Per site, we determined fish seasonality, feeding, sex ratio, gonadosomatic index, hepatosomatic and condition factors for both sexes, as well as the fecundity and length-weight relationships. We also considered some environmental parameters such as temperature, water temperature, depth, salinity and pH. Our results on the environmental parameters analysis did not show significant differences for the study period; besides, salinity data confirmed an oligohaline environment, and the rest of the physico-chemical parameters, varied in accordance with the climatic pattern in the area. We captured a total of 519 fishes, 311 (59.9 %) males and 208 (41.1 %) females; the proportion of males resulted favorable against females throughout the study. The standard length found along the study period showed that the average was higher in males than in females. The trophic spectrum was composed of 13 food items, principally crustaceans, molluscs and fishes; in addition, cannibalism was observed over young individuals during March and April. The most advanced stages of gonadal maturation were recorded from November to March for males, and from November to February in females; generally, the Gonadosomatic index (IGS) recorded the highest values from November to April. The Hepatosomatic Index (IHS) and the Condition Factor (FC) presented an inverse relationship with the Gonadosomatic index (IGS). The fecundity of this species ranged from 96 to 428 oocytes per female. The weight-length relationship by sexes and seasons, showed a higher growth rate for males than for females, and an allometric growth type. The biological and ecological information of O. beta in ALS evidenced the importance of this species and its ecological role in the structure and dynamics of these aquatic communities. This species may be used as a model for future proposals dealing with the management and sustainable use of this ecosystem.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Opsanus beta]]></kwd>
<kwd lng="es"><![CDATA[índices reproductivos]]></kwd>
<kwd lng="es"><![CDATA[alimentación]]></kwd>
<kwd lng="es"><![CDATA[crecimiento]]></kwd>
<kwd lng="en"><![CDATA[Opsanus beta]]></kwd>
<kwd lng="en"><![CDATA[reproductive index]]></kwd>
<kwd lng="en"><![CDATA[food]]></kwd>
<kwd lng="en"><![CDATA[growth]]></kwd>
</kwd-group>
</article-meta>
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