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The condition of honey bee colonies (Apis mellifera) treated for Varroa destructor by different methods
The aim of this study was to examine how different methods of varroa treatment affect the condition of honey bee colonies. There were four groups of bee colonies formed, with 25 colonies per group: group I (MT): chemotherapy only; group II (IT): integrated varroa treatment; group III (NT): natural c...
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Published in: | Journal of apicultural research 2018-10, Vol.57 (5), p.674-681 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | The aim of this study was to examine how different methods of varroa treatment affect the condition of honey bee colonies. There were four groups of bee colonies formed, with 25 colonies per group: group I (MT): chemotherapy only; group II (IT): integrated varroa treatment; group III (NT): natural compounds treatment; and group IV (C): control group, without any varroa treatment. After the first year of assay, the autumn measurements revealed that the colonies in the control group had significantly more combs inhabited by bees than the colonies in the groups treated for varroa with chemotherapy. In the following year, the colonies in the control group weakened so much that eventually their average number of combs inhabited by bees for the third assay year was significantly lower than in the remaining groups (from 13.5 in the NT group to 14.8 in the IT group), with only 10.2 inhabited combs in the C group. The varroa treatment applied in the treated colonies did not reduce the winter debris weight in comparison to the non-treated ones. We did not observe any negative effect of the selected varroa treatment methods on the condition of bee colonies. Failing to apply varroa treatment results in the gradual and systematic decrease in the number of combs inhabited by bees and condition of bee colonies and consequently, in their death.
Estado de las colonias de abejas melíferas (Apis mellifera) tratadas por Varroa destructor con diferentes métodos
El objetivo de este estudio fue examinar cómo los diferentes métodos de tratamiento de la varroa afectan la condición de las colonias de abejas melíferas. Se formaron cuatro grupos de colonias de abejas, con 25 colonias por grupo: grupo I (MT) -sólo quimioterapia, grupo II (IT) -tratamiento integrado de la varroa, grupo III (NT) -tratamiento con compuestos naturales- y grupo IV (C) -grupo control, sin ningún tratamiento de la varroa. Después del primer año de ensayo, las mediciones de otoño han revelado que las colonias del grupo control tenían un número significativamente mayor de panales habitados por abejas que las colonias de los grupos tratados contra la varroa con quimioterapia. Durante el año siguiente, las colonias del grupo de control se debilitaron tanto que, finalmente, su número medio de panales habitados por abejas en el tercer año de ensayo fue significativamente menor que el número de panales habitados por abejas de las colonias del resto de los grupos (de 13,5 en el grupo NT a 14,8 en el grupo IT), con s |
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ISSN: | 0021-8839 2078-6913 |
DOI: | 10.1080/00218839.2018.1495440 |