<?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>2730-5066</journal-id>
<journal-title><![CDATA[Agrociencia Uruguay]]></journal-title>
<abbrev-journal-title><![CDATA[Agrocienc. Urug.]]></abbrev-journal-title>
<issn>2730-5066</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Agronomía - Instituto de Nacional de Investigación Agropecuaria]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2730-50662021000101308</article-id>
<article-id pub-id-type="doi">10.31285/agro.25.410</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Honeydew honey production in honey bees colonies affected by the River disease in Uruguay]]></article-title>
<article-title xml:lang="es"><![CDATA[Producción de mielatos en colonias de abejas afectadas por el mal del río en Uruguay]]></article-title>
<article-title xml:lang="pt"><![CDATA[Produção de melada em colônias de abelhas afetadas pelo Mal del Río no Uruguai]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nogueira]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juri]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Invernizzi]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la República Facultad de Veterinaria Departamento de Producción Animal]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de la República Facultad de Ciencias Sección Etología]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>25</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_arttext&amp;pid=S2730-50662021000101308&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_abstract&amp;pid=S2730-50662021000101308&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.edu.uy/scielo.php?script=sci_pdf&amp;pid=S2730-50662021000101308&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: In Uruguay, the excretions of the flatidae Epormenis cestri when located in sarandí colorado trees (Sebastiania schottiana) are the cause of the massive death of young honeybee larvae, a phenomenon that beekeepers call River disease. A strong income of honeydew is frequently observed in these affected colonies despite the continuous loss of bees due to lack of replacement. The aim of this study was to determine a handling of the colonies that allows obtaining honeydew honey. Forty-eight colonies were transported to an apiary affected by River disease and were divided into 5 groups according to the following treatments: Group 1: regular honeydew harvest, adding of brood and sugar syrup supply (N=10); Group 2: regular honeydew harvest and sugar syrup supply (N=10); Group 3: regular honeydew harvest and adding of brood (N=10); Group 4: regular honeydew harvest (N=10); Group 5: only one harvest of honeydew once the study had finished (N=8). The colonies from groups 1 and 3 produced the biggest amount of honeydew honey, averaging 32.0 and 28.6kg, respectively. The physicochemical analysis of honeydew honey showed characteristics of this product such as high electrical conductivity (0.98-1.14 mS/cm), diastase activity (&gt;50%) and color (71-83 mm Pfund). This study provides the basis of a colony handling that allows beekeepers to obtain important harvests of a honeydew honey not yet known in the international market.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En Uruguay, las excreciones de los flátidos Epormenis cestri, cuando se localizan en árboles de sarandí colorado (Sebastiania schottiana), causan mortalidad masiva de larvas jóvenes de abejas melíferas, fenómeno que los apicultores denominan «mal del río». Frecuentemente se observa una fuerte entrada de mielatos en las colonias afectadas a pesar del despoblamiento de abejas generado por la falta de reemplazo. El objetivo de este estudio fue determinar un manejo de las colonias que permita obtener mielatos. Se transportaron 48 colonias a un colmenar afectado por el mal del río y se dividieron en 5 grupos de acuerdo con el tratamiento: Grupo 1: cosecha regular de mielatos, adición de cría y suministro de jarabe de azúcar (N = 10); Grupo 2: cosecha regular de mielatos y suministro de jarabe de azúcar (N = 10); Grupo 3: cosecha regular de mielatos y adición de cría (N = 10); Grupo 4: cosecha regular de mielatos (N = 10); Grupo 5: solo una cosecha de mielatos una vez finalizadas las secreciones de E. cestri (N = 8). Las colonias de los grupos 1 y 3 produjeron la mayor cantidad de mielatos, con un promedio de 32,0 y 28,6 kg, respectivamente. El análisis fisicoquímico de los mielatos mostró características de este producto, como alta conductividad eléctrica (0.98-1.14 mS / cm), actividad diastasa (&gt; 50%) y color (71-83 mm Pfund). Este estudio proporciona la base de un manejo de las colonias que permite a los apicultores obtener cosechas importantes de un mielato aún no conocido en el mercado internacional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo: No Uruguai, as secreções dos flatídeos Epormenis cestri, quando estão localizados em árvores de Sarandí Colorado (Sebastiania schottiana), causam a mortalidade massiva de larvas jovens de abelhas melíferas, fenômeno que os apicultores denominam de Mal do Río. Freqüentementeé observado um forte influxo de melada nas colônias afetadas, apesar do despovoamento de abelhas gerado pela falta de reposição. O objetivo deste estudo foi determinar um manejo das colônias que permita a obtenção de melada. 48 colônias foram transportadas para um apiário afetado por Mal do Río e foram divididas em cinco grupos de acordo com o tratamento: Grupo 1: colheita regular de melada, adição de cria e fornecimento de xarope de açúcar (N = 10); Grupo 2: colheita regular de melada e fornecimento de xarope de açúcar (N = 10); Grupo 3: colheita regular de melada e adição de cria (N = 10); Grupo 4: colheita regular de melada (N = 10); Grupo 5: apenas uma colheita de melada após o final das secreçãoes de E. cestri (N = 8). As colônias dos grupos 1 e 3 produziram a maior quantidade de melada, com média de 32,0 e 28,6 kg, respectivamente. A análise físico-química das meladas mostrou características deste produto como alta condutividade elétrica (0,98-1,14 mS / cm), atividade de diastase (&gt; 50%) e cor (71-83 mm Pfund). Este estudo fornece a base para o manejo de colônias que permite aos apicultores obter colheitas significativas de uma melada ainda não conhecida no mercado internacional.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Apis mellifera]]></kwd>
<kwd lng="en"><![CDATA[disease]]></kwd>
<kwd lng="en"><![CDATA[honeydew honey]]></kwd>
<kwd lng="en"><![CDATA[larvae mortality]]></kwd>
<kwd lng="es"><![CDATA[Apis mellifera]]></kwd>
<kwd lng="es"><![CDATA[enfermedad]]></kwd>
<kwd lng="es"><![CDATA[mielato]]></kwd>
<kwd lng="es"><![CDATA[mortalidad larvaria]]></kwd>
<kwd lng="pt"><![CDATA[Apis melífera]]></kwd>
<kwd lng="pt"><![CDATA[doença]]></kwd>
<kwd lng="pt"><![CDATA[melada]]></kwd>
<kwd lng="pt"><![CDATA[mortalidade larvária]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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