<?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>0188-8897</journal-id>
<journal-title><![CDATA[Hidrobiológica]]></journal-title>
<abbrev-journal-title><![CDATA[Hidrobiológica]]></abbrev-journal-title>
<issn>0188-8897</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Metropolitana, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-88972018000200163</article-id>
<article-id pub-id-type="doi">10.24275/uam/izt/dcbs/hidro/2018v28n2/bustamante</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Crecimiento y calidad espermática en trucha arcoíris Oncorhynchus mykiss (Teleostei: Salmonidae) durante la temporada reproductiva]]></article-title>
<article-title xml:lang="en"><![CDATA[Growth and sperm quality in rainbow trout Oncorhynchus mykiss (Teleostei: Salmonidae) during the reproductive season]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bustamante-González]]></surname>
<given-names><![CDATA[Jesús Dámaso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortés-García]]></surname>
<given-names><![CDATA[Araceli]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Gutiérrez]]></surname>
<given-names><![CDATA[Martha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento El Hombre y su Ambiente Laboratorio de Reproducción Genética y Sanidad Acuícola]]></institution>
<addr-line><![CDATA[Xochimilco Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<volume>28</volume>
<numero>2</numero>
<fpage>163</fpage>
<lpage>170</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-88972018000200163&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-88972018000200163&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-88972018000200163&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes: Oncorhynchus mykiss es una de las especies que más se cultiva en el mundo y que tiene alto valor económico, por tal motivo, optimizar su crecimiento y reproducción es fundamental para la acuacultura.  Objetivos: Evaluar el crecimiento y calidad espermática en trucha arcoíris durante la temporada reproductiva.  Métodos: La investigación se realizó en el centro acuícola El Zarco, Estado de México, con 32 machos sexualmente maduros de tres años. De julio a febrero se registraron mensualmente: longitud total, altura, grosor (cm), peso (g), ganancia de peso (GP), tasa de crecimiento absoluto (TCA) y tasa instantánea de crecimiento (TIC). Las muestras de semen se obtuvieron de agosto a febrero. Las variables para determinar la calidad espermática fueron: volumen, color, consistencia, concentración, pH y movilidad.  Resultados: En cuando a longitud y peso, la mayor TCA, GP y TIC se obtuvo de julio a agosto, mes previo al periodo reproductivo. De agosto a febrero la TCA fue de 1.13 cm; GP de 0.01 g y TIC de 0.0321 ± 0.0522 cm y 0.0932 ± 0.2223 g en promedio. En julio se registraron diferencias en longitud y peso (p &lt;0.05) en comparación con los meses del periodo reproductivo. El patrón de producción de semen se incrementó de agosto a octubre y decreció hasta febrero con diferencias significativas (p &lt;0.05). En general, se encontró semen de color blanco y consistencia lechosa. La mayor concentración espermática se presentó en septiembre (8.17 ± 2.06 x 109 ML-1) y disminuyó hasta febrero, con diferencias significativas (p &lt;0.05) entre los meses. El pH fue alcalino, con un promedio de 8.07 ± 0.31. La movilidad mostró un incremento de agosto a diciembre y un decremento de enero a febrero, con diferencias significativas (p &lt;0.05) entre los meses.  Conclusiones: Durante el periodo reproductivo la energía procedente del alimento se destina a asegurar la reproducción, por lo que el crecimiento se ralentiza y la calidad espermática varía entre los meses.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Oncorhynchus mykiss is a species that is widely cultivated in the world with high economic value. For this reason, it is essential to optimize its growth and reproduction for aquaculture.  Goals: Evaluate the growth and sperm quality of rainbow trout during the reproductive season.  Methods: We conducted research at the &#8220;El Zarco&#8221; Aquaculture Center in the state of Mexico, with 32 sexually mature three-year-old males. Once a month, we recorded total length, height, thickness (cm), and weight (g) during July-February, and calculated weight gain (WG), absolute growth rate (AGR), and instantaneous growth rate (IGR). Semen samples were obtained during (August-February). In order to evaluate the spermatic quality, we measured volume, color, consistency, concentration, pH, and mobility.  Results: The highest AGR, WG, and IGR in terms of length and weight were obtained from July-August, i.e., a month prior to the reproductive period; from August-February the AGR was 1.13 cm, WG was 0.01 g, and there was an average IGR of 0.0321 ± 0.0522 cm and 0.0932 ± 0.2223 g. Differences (p &lt;0.05) in length and weight were found between July and the months of the reproductive period. There was a pattern of semen production: It increased from August to October and then decreased until February, with significant differences (p &lt;0.05). Usually, white semen and milky consistency were found. The highest sperm concentration occurred in September (8.17 ± 2.06 x 109 mL-1) and decreased until February, with significant differences (p &lt;0.05) between months. The pH was alkaline with an average value of 8.07 ± 0.31. Mobility increased from August to December and decreased from January to February, with significant differences (p &lt;0.05) between months.  Conclusions: During the reproductive period, food energy is channeled to ensure reproduction, so that growth slows and sperm quality varies during the reproductive months.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[color]]></kwd>
<kwd lng="es"><![CDATA[concentración espermática]]></kwd>
<kwd lng="es"><![CDATA[consistencia]]></kwd>
<kwd lng="es"><![CDATA[movilidad]]></kwd>
<kwd lng="es"><![CDATA[peso]]></kwd>
<kwd lng="es"><![CDATA[pH]]></kwd>
<kwd lng="es"><![CDATA[producción de semen]]></kwd>
<kwd lng="es"><![CDATA[talla]]></kwd>
<kwd lng="es"><![CDATA[trucha arcoíris]]></kwd>
<kwd lng="en"><![CDATA[color]]></kwd>
<kwd lng="en"><![CDATA[consistency]]></kwd>
<kwd lng="en"><![CDATA[motility]]></kwd>
<kwd lng="en"><![CDATA[pH]]></kwd>
<kwd lng="en"><![CDATA[rainbow trout]]></kwd>
<kwd lng="en"><![CDATA[semen production]]></kwd>
<kwd lng="en"><![CDATA[size]]></kwd>
<kwd lng="en"><![CDATA[sperm concentration]]></kwd>
<kwd lng="en"><![CDATA[weight]]></kwd>
</kwd-group>
</article-meta>
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