Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life History
Wild bees are important pollinators of wild plants and agricultural crops and they are threatened by several environmental stressors including emerging pathogens. Honey bees have been suggested as a potential source of pathogen spillover. One prevalent pathogen that has recently emerged as a honey b...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-10-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/10/11/380 |
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| author | Kathrin Bramke Uta Müller Dino P. McMahon Jens Rolff |
| author_facet | Kathrin Bramke Uta Müller Dino P. McMahon Jens Rolff |
| author_sort | Kathrin Bramke |
| collection | DOAJ |
| description | Wild bees are important pollinators of wild plants and agricultural crops and they are threatened by several environmental stressors including emerging pathogens. Honey bees have been suggested as a potential source of pathogen spillover. One prevalent pathogen that has recently emerged as a honey bee disease is the microsporidian <i>Nosema ceranae</i>. While the impacts of<i> N. ceranae </i>in honey bees are well documented, virtually nothing is known about its effects in solitary wild bees. The solitary mason bee <i>Osmia bicornis</i> is a common pollinator in orchards and amenable to commercial management. Here, we experimentally exposed larvae of <i>O. bicornis</i> to food contaminated with <i>N. ceranae</i> and document spore presence during larval development. We measured mortality, growth parameters, and timing of pupation in a semi-field experiment. Hatched individuals were assessed for physiological state including fat body mass, wing muscle mass, and body size. We recorded higher mortality in the viable-spore-exposed group but could only detect a low number of spores among the individuals of this treatment. Viable-spore-treated individuals with higher head capsule width had a delayed pupation start. No impact on the physiological status could be detected in hatched imagines. Although we did not find overt evidence of <i>O. bicornis</i> infection, our findings indicate that exposure of larvae to viable <i>N. ceranae</i> spores could affect bee development. |
| first_indexed | 2024-12-17T13:27:17Z |
| format | Article |
| id | doaj.art-c57b3db1d4c4477ca240659e83047f77 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-12-17T13:27:17Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-c57b3db1d4c4477ca240659e83047f772022-12-21T21:46:42ZengMDPI AGInsects2075-44502019-10-01101138010.3390/insects10110380insects10110380Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life HistoryKathrin Bramke0Uta Müller1Dino P. McMahon2Jens Rolff3Institut für Biologie, Universität Berlin, 14195 Berlin, GermanyInstitut für Biologie, Universität Berlin, 14195 Berlin, GermanyInstitut für Biologie, Universität Berlin, 14195 Berlin, GermanyInstitut für Biologie, Universität Berlin, 14195 Berlin, GermanyWild bees are important pollinators of wild plants and agricultural crops and they are threatened by several environmental stressors including emerging pathogens. Honey bees have been suggested as a potential source of pathogen spillover. One prevalent pathogen that has recently emerged as a honey bee disease is the microsporidian <i>Nosema ceranae</i>. While the impacts of<i> N. ceranae </i>in honey bees are well documented, virtually nothing is known about its effects in solitary wild bees. The solitary mason bee <i>Osmia bicornis</i> is a common pollinator in orchards and amenable to commercial management. Here, we experimentally exposed larvae of <i>O. bicornis</i> to food contaminated with <i>N. ceranae</i> and document spore presence during larval development. We measured mortality, growth parameters, and timing of pupation in a semi-field experiment. Hatched individuals were assessed for physiological state including fat body mass, wing muscle mass, and body size. We recorded higher mortality in the viable-spore-exposed group but could only detect a low number of spores among the individuals of this treatment. Viable-spore-treated individuals with higher head capsule width had a delayed pupation start. No impact on the physiological status could be detected in hatched imagines. Although we did not find overt evidence of <i>O. bicornis</i> infection, our findings indicate that exposure of larvae to viable <i>N. ceranae</i> spores could affect bee development.https://www.mdpi.com/2075-4450/10/11/380wild bees<i>nosema ceranae</i><i>osmia bicornis</i>pathogen transmissionsolitary beesbee healthbee diseases |
| spellingShingle | Kathrin Bramke Uta Müller Dino P. McMahon Jens Rolff Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life History Insects wild bees <i>nosema ceranae</i> <i>osmia bicornis</i> pathogen transmission solitary bees bee health bee diseases |
| title | Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life History |
| title_full | Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life History |
| title_fullStr | Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life History |
| title_full_unstemmed | Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life History |
| title_short | Exposure of Larvae of the Solitary Bee <i>Osmia bicornis</i> to the Honey Bee Pathogen <i>Nosema ceranae</i> Affects Life History |
| title_sort | exposure of larvae of the solitary bee i osmia bicornis i to the honey bee pathogen i nosema ceranae i affects life history |
| topic | wild bees <i>nosema ceranae</i> <i>osmia bicornis</i> pathogen transmission solitary bees bee health bee diseases |
| url | https://www.mdpi.com/2075-4450/10/11/380 |
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