<?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>0366-5232</journal-id>
<journal-title><![CDATA[Caldasia]]></journal-title>
<abbrev-journal-title><![CDATA[Caldasia]]></abbrev-journal-title>
<issn>0366-5232</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ciencias Naturales, Facultad de Ciencias-Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0366-52322022000100178</article-id>
<article-id pub-id-type="doi">10.15446/caldasia.v44n1.87376</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diet of Acanthochelysspixii and Hydromedusa tectifera (Chelidae) in the southern Brazil]]></article-title>
<article-title xml:lang="en"><![CDATA[Dieta de Acanthochelys spixii e Hydromedusa tectifera (Chelidae) en el sur del Brasil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chaviel]]></surname>
<given-names><![CDATA[Bruna Medeiros]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mascarenhas]]></surname>
<given-names><![CDATA[Carolina Silveira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Corrêa]]></surname>
<given-names><![CDATA[Fabiano]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silveira]]></surname>
<given-names><![CDATA[Emily Costa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coimbra]]></surname>
<given-names><![CDATA[Marco Antônio Afonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muller]]></surname>
<given-names><![CDATA[Gertrud]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal de Pelotas Departamento de Microbiologia e Parasitologia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade do Estado de Mato Grosso  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Triagem de Animais Silvestres (NURFS/CETAS/UFPEL)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>44</volume>
<numero>1</numero>
<fpage>178</fpage>
<lpage>183</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0366-52322022000100178&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0366-52322022000100178&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0366-52322022000100178&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La dieta de las tortugas de agua dulce Acanthochelys spixii y Hydromedusa tectifera es poco conocida en el extremo sur del Brasil. En este contexto se examinó el tracto digestivo de 21 individuos de A. spixii y 20 de H. tectifera provenientes de cuatro municipios del estado de Rio Grande do Sul, Brasil. Los ítems consumidos fueron identificados al nivel taxonómico más bajo posible, cuantificados y conservados en etanol de 70 °GL. Se obtuvieron las variables frecuencia de ocurrencia (F %) y el volumen porcentual (V %) de cada categoría de presa y se calculó el índice de importancia alimentaria (IAi %). Se analizó la amplitud del nicho trófico y la estrategia de alimentación de ambas especies. Las dietas se compararon usando la prueba de Mann-Whitney (P &lt; 0,05). Ambas especies presentaron una estrategia de alimentación generalista, consumiendo principalmente insectos Hemiptera, Odonata, Coleoptera y Diptera. No hubo diferencias significativas en el volumen de ítems consumidos por ambas especies (Mann-Whitney, z = -0,387, P = 0,69). En relación con la amplitud de nicho trófico observamos valores bajos para ambas especies, 0,41 en A. spixii y 0,39 en H. tectifera, lo que sugiere una dieta más restringida con uniformidad en el consumo de alimentos, sin embargo, resaltamos que una dieta más restringida no sugiere una especialización trófica, ya que la disponibilidad de los elementos alimenticios tiene variación en el tiempo y el espacio. El estudio aportó información sobre la dieta de las especies de la región, generando datos que pueden utilizarse en programas de conservación de las especies y sus hábitats.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Data about the diet of the freshwater turtles Acanthochelys spixii and Hydromedusa tectifera from southern Brazil populations remain little known. In this context, the digestive tract of 21 A. spixii and 20 of H. tectifera individuals from four municipalities in the state of Rio Grande do Sul, Brazil, were examined. The food items were identified at the lowest possible taxonomic level, quantified, and conserved in ethanol 70°GL. The frequency of occurrence (F %) and volume percentage (V %) were estimated, as well as the food importance index (IAi %). The range of the trophic niche and the feeding strategy of both species were analyzed. The diet of A. spixii and H. tectifera was compared through the Mann-Whitney test (P &lt; 0.05). Both species presented a generalist food strategy, consuming mainly insects, represented by Hemiptera, Odonata, Coleoptera, and Diptera. There was no significant difference in the volume of items consumed by both species (Mann-Whitney test, z =-0.387, P = 0.69). Concerning the trophic niche range, we observed low values for both species, it was of 0.41 for A. spixii and 0.39 for H. tectifera suggesting a more restricted diet with uniformity in food consumption, however, we highlight that a more restricted diet does not suggest a trophic specialization, because the availability of food items have variation in time and space. The study contributed information on the diet of species in the region, generating data that can be used in programs for the conservation of species and their habitats.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Freshwater turtles]]></kwd>
<kwd lng="en"><![CDATA[food strategy]]></kwd>
<kwd lng="en"><![CDATA[trophic niche]]></kwd>
<kwd lng="en"><![CDATA[Black Spiny-necked Turtle]]></kwd>
<kwd lng="en"><![CDATA[South American Snake-necked Turtle]]></kwd>
<kwd lng="es"><![CDATA[Tortugas de agua dulce]]></kwd>
<kwd lng="es"><![CDATA[estrategia alimentaria]]></kwd>
<kwd lng="es"><![CDATA[nicho trófico]]></kwd>
<kwd lng="es"><![CDATA[tortuga negra de cuello espinoso]]></kwd>
<kwd lng="es"><![CDATA[tortuga de cuello de serpiente sudamericana]]></kwd>
</kwd-group>
</article-meta>
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