<?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>S0188-88972018000100011</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Polyculture of crayfish (Procambarus acanthophorus) and Nile tilapia (Oreochromis niloticus) as a strategy for sustainable water use]]></article-title>
<article-title xml:lang="es"><![CDATA[Policultivo del acocil (Procambarus acanthophorus) y tilapia del Nilo (Oreochromis niloticus) como estrategia de uso sustentable del agua]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Vergara]]></surname>
<given-names><![CDATA[Martha P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Ordóñez]]></surname>
<given-names><![CDATA[Selene B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Rostro]]></surname>
<given-names><![CDATA[Carlos I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Legaspi]]></surname>
<given-names><![CDATA[I. Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Boca del Río División de Estudios de Posgrado e Investigación Laboratorio de Nutrición Acuícola]]></institution>
<addr-line><![CDATA[Veracruz ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<volume>28</volume>
<numero>1</numero>
<fpage>11</fpage>
<lpage>15</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-88972018000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-88972018000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-88972018000100011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background The crayfish Procambarus acanthophorus has a high potential for cultivation; however, it is necessary to evaluate its performance in polyculture with tilapia as a strategy for sustainable production in the rural sector where re sources are limited.  Goals Assess the effect of polyculture of the crayfish and tilapia by measuring survival and growth.  Methods Three methods of cultivation with three replicates were evaluated: T1) crayfish monoculture, T2) polyculture crayfish/tilapia and T3) tilapia monoculture. Nine high-density polyethylene tanks (3 m diameter x 1.2 m deep) were used during the trial. The tilapia were fed commercial feed, 32/5% protein / lipids, while the crayfish were given commercial shrimp feed with 35/7% protein / lipids. The productive efficiency of mono- and biculture was determined based on survival feeding efficiency and growth performance.  Results Contrary to what was expected, interspecific competition, space, food availability, and weight gain of crayfish were similar in all treatments, whereas survival was influenced by the treatment, particularly during polyculture, where it was observed that tilapia affected the survival of crayfish. Unlike crayfish, tilapia maintained similar growth and survival in all treatments.  Conclusions The results indicate that polyculture of crayfish/tilapia in a recirculation system is possible and promotes the use of the water column. However, it is necessary to consider the antagonistic effect between species.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes Los cangrejos de río Procambarus acanthophorus, tiene un alto potencial de cultivo; sin embargo, es necesario evaluar su desempeño en policultivo con tilapia como estrategia de producción sustentable para el sector rural, donde los recursos son limitados.  Objetivos Evaluar el efecto del policultivo del acocil y la tilapia en la supervivencia y el crecimiento.  Métodos Se evaluaron tres esquemas de cultivo con tres réplicas: T1) monocultivo de acocil, T2) policultivo acocil/; T3) monocultivo de tilapia. Nueve tanques de polietileno de alta densidad (3 m diámetro x 1.2 m profundidad) fueron usados durante el estudio. Las tilapias se alimentaron con alimento comercial con 32/5% proteína/lípidos, mientras que a los acociles se les dio alimento comercial de camarón con 35/7% proteína/lípidos. La eficiencia productiva en el mono- y bicultivo se determinó en base a la supervivencia, eficiencia alimenticia y crecimiento.  Resultados Contrario a lo esperado en relación con la competencia interespecífica, espacio y disponibilidad de alimento, fue similar el peso ganado de los acociles en todos los tratamientos, mientras que su supervivencia estuvo influenciada por los tratamientos, particularmente en el policultivo, en donde se observó que la tilapia afectó la supervivencia de los acociles. A diferencia de los acociles, las tilapias presentaron una supervivencia y crecimiento similar en todos los tratamientos.  Conclusiones Los resultados indican que es posible realizar el policultivo de acocil/tilapia en un sistema de recirculación, lo que promueve el aprovechamiento de la columna de agua, considerando sin embargo el efecto antagónico entre especies.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[antagonistic behavior]]></kwd>
<kwd lng="en"><![CDATA[crayfish]]></kwd>
<kwd lng="en"><![CDATA[polyculture]]></kwd>
<kwd lng="en"><![CDATA[sustainable aquaculture]]></kwd>
<kwd lng="es"><![CDATA[acocil]]></kwd>
<kwd lng="es"><![CDATA[acuacultura sustentable]]></kwd>
<kwd lng="es"><![CDATA[comportamiento antagónico policultivo]]></kwd>
</kwd-group>
</article-meta>
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