Increased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornis
Abstract Solitary wild bees play a key role as pollinators of wild plants and crops, but they are increasingly at risk from anthropogenic global change, such as climate warming. However, how warmer temperature during overwintering affects reproductive success of those bees remains largely unknown. I...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-86729-x |
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| author | Sarah Müller Jana Collatz Henning Richter Robert Zboray Matthias Albrecht |
| author_facet | Sarah Müller Jana Collatz Henning Richter Robert Zboray Matthias Albrecht |
| author_sort | Sarah Müller |
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| description | Abstract Solitary wild bees play a key role as pollinators of wild plants and crops, but they are increasingly at risk from anthropogenic global change, such as climate warming. However, how warmer temperature during overwintering affects reproductive success of those bees remains largely unknown. In a semi-field experiment we assessed individual life-long reproductive success of 144 females of the solitary bee species Osmia bicornis that had been wintered at three different temperatures. Overwintering mortality of bees was on average 32% higher at winter temperatures of 8 °C compared to 4.5 °C–0 °C, at which almost all bees successfully emerged. After wintering at 4.5 °C and 8 °C females produced less offspring than after overwintering at 0 °C (26% or 36% less offspring, respectively). Although longevity and daily offspring production rate were not significantly affected, nesting duration of females wintered at 0 °C tended to be longer (+ 2.5 days) than that of bees wintered at 4.5 °C, which likely contributed to the higher offspring production at colder overwintering temperatures. Mortality and sex ratio of offspring was not significantly affected. While future studies should also consider climatic variation during winter, these findings indicate that increasing mean overwintering temperatures could threaten O. bicornis and potentially other solitary bee populations. |
| format | Article |
| id | doaj-art-da046710dd7946ac82ed5ff3f4d70c17 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-da046710dd7946ac82ed5ff3f4d70c172025-01-26T12:27:10ZengNature PortfolioScientific Reports2045-23222025-01-0115111210.1038/s41598-025-86729-xIncreased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornisSarah Müller0Jana Collatz1Henning Richter2Robert Zboray3Matthias Albrecht4 Agroecology and Environment, Agroscope Agroecology and Environment, AgroscopeDiagnostic Imaging Research Unit (DIRU), Vetsuisse Faculty, University of ZurichSwiss Federal Laboratories for Materials Science and Technology Agroecology and Environment, AgroscopeAbstract Solitary wild bees play a key role as pollinators of wild plants and crops, but they are increasingly at risk from anthropogenic global change, such as climate warming. However, how warmer temperature during overwintering affects reproductive success of those bees remains largely unknown. In a semi-field experiment we assessed individual life-long reproductive success of 144 females of the solitary bee species Osmia bicornis that had been wintered at three different temperatures. Overwintering mortality of bees was on average 32% higher at winter temperatures of 8 °C compared to 4.5 °C–0 °C, at which almost all bees successfully emerged. After wintering at 4.5 °C and 8 °C females produced less offspring than after overwintering at 0 °C (26% or 36% less offspring, respectively). Although longevity and daily offspring production rate were not significantly affected, nesting duration of females wintered at 0 °C tended to be longer (+ 2.5 days) than that of bees wintered at 4.5 °C, which likely contributed to the higher offspring production at colder overwintering temperatures. Mortality and sex ratio of offspring was not significantly affected. While future studies should also consider climatic variation during winter, these findings indicate that increasing mean overwintering temperatures could threaten O. bicornis and potentially other solitary bee populations.https://doi.org/10.1038/s41598-025-86729-xClimate changeFitnessGlobal changeReproductive successSurvivalWild bee pollinator populations |
| spellingShingle | Sarah Müller Jana Collatz Henning Richter Robert Zboray Matthias Albrecht Increased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornis Scientific Reports Climate change Fitness Global change Reproductive success Survival Wild bee pollinator populations |
| title | Increased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornis |
| title_full | Increased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornis |
| title_fullStr | Increased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornis |
| title_full_unstemmed | Increased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornis |
| title_short | Increased overwintering temperature reduces reproductive success of the solitary bee species Osmia bicornis |
| title_sort | increased overwintering temperature reduces reproductive success of the solitary bee species osmia bicornis |
| topic | Climate change Fitness Global change Reproductive success Survival Wild bee pollinator populations |
| url | https://doi.org/10.1038/s41598-025-86729-x |
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