Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role?
To study the influence of thiamethoxam exposure on colony strength and pathogen prevalence, an apiary (5 colonies) was placed in front of a plot sown with winter oilseed rape (wOSR), just before the flowering phase. Before sowing, the seeds were treated with an equivalent application of 18 g thiamet...
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MDPI AG
2022-04-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/13/4/371 |
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| author | Elena Alonso-Prados Amelia Virginia González-Porto Carlos García-Villarubia José Antonio López-Pérez Silvia Valverde José Bernal Raquel Martín-Hernández Mariano Higes |
| author_facet | Elena Alonso-Prados Amelia Virginia González-Porto Carlos García-Villarubia José Antonio López-Pérez Silvia Valverde José Bernal Raquel Martín-Hernández Mariano Higes |
| author_sort | Elena Alonso-Prados |
| collection | DOAJ |
| description | To study the influence of thiamethoxam exposure on colony strength and pathogen prevalence, an apiary (5 colonies) was placed in front of a plot sown with winter oilseed rape (wOSR), just before the flowering phase. Before sowing, the seeds were treated with an equivalent application of 18 g thiamethoxam/ha. For comparison, a second apiary (5 colonies) was located in front of a separate 750 m plot sown with untreated wOSR. Dead foragers at the entrance of hives were assessed every 2–3 days throughout the exposure period, while the colony strength (number of combs covered with adult honey bees and brood) and pathogens were monitored each month until the following spring. Foraging on the wOSR crop was confirmed by melissopalynology determination of the corbicular pollen collected periodically, while the chemical analysis showed that exposure to thiamethoxam was mainly through nectar. There was an increase in the accumulation of dead bees in the apiary exposed to thiamethoxam relating with the control, which was coped with an increment of bee brood surface and adult bee population. However, we did not find statistically significant differences between apiaries (α = 0.05) in terms of the evolution of pathogens. We discuss these results under hormesis perspective. |
| first_indexed | 2024-03-09T13:31:01Z |
| format | Article |
| id | doaj.art-45f1da97c51f48ab83f43c7de5fae7f2 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-09T13:31:01Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-45f1da97c51f48ab83f43c7de5fae7f22023-11-30T21:18:08ZengMDPI AGInsects2075-44502022-04-0113437110.3390/insects13040371Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role?Elena Alonso-Prados0Amelia Virginia González-Porto1Carlos García-Villarubia2José Antonio López-Pérez3Silvia Valverde4José Bernal5Raquel Martín-Hernández6Mariano Higes7Unidad de Productos Fitosanitarios, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA, CSIC), 28040 Madrid, SpainLaboratorio de Mieles y Productos de las Colmenas, Centro de Investigación Apícola y Agroambiental (CIAPA), Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal (IRIAF), Consejería de Agricultura de la Junta de Comunidades de Castilla-La Mancha, 19180 Marchamalo, SpainExperimentación e Investigación Hortícola Centro de Investigación Apícola y Agroambiental, Centro de Investigación Apícola y Agroambiental (CIAPA), Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal (IRIAF), Consejería de Agricultura de la Junta de Comunidades de Castilla-La Mancha, 19180 Marchamalo, SpainExperimentación e Investigación Hortícola Centro de Investigación Apícola y Agroambiental, Centro de Investigación Apícola y Agroambiental (CIAPA), Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal (IRIAF), Consejería de Agricultura de la Junta de Comunidades de Castilla-La Mancha, 19180 Marchamalo, SpainInstituto Universitario CINQUIMA, Analytical Chemistry Group, Universidad de Valladolid, 47011 Valladolid, SpainInstituto Universitario CINQUIMA, Analytical Chemistry Group, Universidad de Valladolid, 47011 Valladolid, SpainInstituto de Recursos Humanos para la Ciencia y la Tecnología (INCRECYT–ESF/EC-FSE), Fundación Parque Científico y Tecnológico de Castilla–La Mancha, 02006 Albacete, SpainLaboratorio de Patología Apícola, Centro de Investigación Apícola y Agroambiental (CIAPA), Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal (IRIAF), Consejería de Agricultura de la Junta de Comunidades de Castilla-La Mancha, 19180 Marchamalo, SpainTo study the influence of thiamethoxam exposure on colony strength and pathogen prevalence, an apiary (5 colonies) was placed in front of a plot sown with winter oilseed rape (wOSR), just before the flowering phase. Before sowing, the seeds were treated with an equivalent application of 18 g thiamethoxam/ha. For comparison, a second apiary (5 colonies) was located in front of a separate 750 m plot sown with untreated wOSR. Dead foragers at the entrance of hives were assessed every 2–3 days throughout the exposure period, while the colony strength (number of combs covered with adult honey bees and brood) and pathogens were monitored each month until the following spring. Foraging on the wOSR crop was confirmed by melissopalynology determination of the corbicular pollen collected periodically, while the chemical analysis showed that exposure to thiamethoxam was mainly through nectar. There was an increase in the accumulation of dead bees in the apiary exposed to thiamethoxam relating with the control, which was coped with an increment of bee brood surface and adult bee population. However, we did not find statistically significant differences between apiaries (α = 0.05) in terms of the evolution of pathogens. We discuss these results under hormesis perspective.https://www.mdpi.com/2075-4450/13/4/371honey beesSpainthiamethoxam<i>Nosema ceranae</i>hormesis<i>Brassica napus</i> |
| spellingShingle | Elena Alonso-Prados Amelia Virginia González-Porto Carlos García-Villarubia José Antonio López-Pérez Silvia Valverde José Bernal Raquel Martín-Hernández Mariano Higes Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role? Insects honey bees Spain thiamethoxam <i>Nosema ceranae</i> hormesis <i>Brassica napus</i> |
| title | Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role? |
| title_full | Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role? |
| title_fullStr | Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role? |
| title_full_unstemmed | Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role? |
| title_short | Effects of Thiamethoxam-Dressed Oilseed Rape Seeds and <i>Nosema ceranae</i> on Colonies of <i>Apis mellifera iberiensis</i>, L. under Field Conditions of Central Spain. Is Hormesis Playing a Role? |
| title_sort | effects of thiamethoxam dressed oilseed rape seeds and i nosema ceranae i on colonies of i apis mellifera iberiensis i l under field conditions of central spain is hormesis playing a role |
| topic | honey bees Spain thiamethoxam <i>Nosema ceranae</i> hormesis <i>Brassica napus</i> |
| url | https://www.mdpi.com/2075-4450/13/4/371 |
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