<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282019000300601</article-id>
<article-id pub-id-type="doi">10.19136/era.a6n18.2179</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de la salinidad sobre la frecuencia ventilatoria branquial de Dormitator latifrons (Richardson, 1984)]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of salinity on the gill ventilation frequency of Dormitator latifrons (Richardson, 1984)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zapata]]></surname>
<given-names><![CDATA[Ana Antonia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega-Villasante]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chong-Carrillo]]></surname>
<given-names><![CDATA[Olimpia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Ceballos]]></surname>
<given-names><![CDATA[Manuel Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Badillo-Zapata]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Guadalajara Centro Universitario de la Costa Departamento de Ciencias Biológicas]]></institution>
<addr-line><![CDATA[Puerto Vallarta Jalisco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Consejo Nacional de Ciencia y Tecnología  ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>6</volume>
<numero>18</numero>
<fpage>601</fpage>
<lpage>607</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282019000300601&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282019000300601&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282019000300601&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Dormitator latifrons habita en un amplio intervalo de salinidades producto de su ciclo migratorio y reproductivo. El objetivo del trabajo fue evaluar el tiempo de respuesta fisiológica y la sobrevivencia al cambio salino en condiciones de laboratorio. Se registró la frecuencia ventilatoria branquial (FVB) basal de organismos a 33 ups (AS) y en agua dulce 0.3 ups (AD). Se contabilizó la frecuencia ventilatoria branquial de organismos que fueron transferidos AD-AS e inversamente AS-AD (15, 25, y 33 ups), por triplicado, durante 1 minuto, 1,4, 24 y 48 h. Se encontraron diferencias estadísticas (p &lt; 0.05) en los peces transferidos de AD-AS y AS-AD al primer minuto con respecto a FVB basal. En todos los tratamientos los organismos recuperaron la FVB una hora después de ser expuestos a la modificación salina. Se tuvo un 100% de sobrevivencia en todos los tratamientos, D. latifrons tiene rápida respuesta fisiológica a cambios bruscos de salinidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Dormitator latifrons inhabits a wide range of salinities as a result of its migratory and reproductive cycle. The objective of the study was to evaluate the physiological response time and survival to saline change under laboratory conditions. The basal gill ventilation frequency (GVF) of organisms was recorded at 33 ups (SW) and in freshwater at 0.3 ups (FW). The gill ventilation frequency of organisms that were transferred from FW-SW and inversely from SW-FW (15, 25, and 33 ups) was counted, in triplicate, for 1 minute and 1, 4, 24 and 48 h. Statistical differences (p &lt; 0.05) were found in fish transferred from FW-SW and SW-FW at the first minute with respect to basal GVF. In all treatments the organisms recovered their GVF one hour after being exposed to saline modification. There was 100% survival in all treatments. D. latifrons has a rapid physiological response to sudden changes in salinity.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Adaptación]]></kwd>
<kwd lng="es"><![CDATA[condiciones ambientales]]></kwd>
<kwd lng="es"><![CDATA[estrés]]></kwd>
<kwd lng="es"><![CDATA[Pez nativo]]></kwd>
<kwd lng="en"><![CDATA[Adaptation]]></kwd>
<kwd lng="en"><![CDATA[environmental conditions]]></kwd>
<kwd lng="en"><![CDATA[stress]]></kwd>
<kwd lng="en"><![CDATA[native fish]]></kwd>
</kwd-group>
</article-meta>
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