What's happened
Scientists have discovered that queen bumblebees can survive submerged underwater for up to a week during diapause, thanks to low metabolic rates and underwater gas exchange. This resilience could influence how pollinator populations cope with increasing spring floods, according to recent research.
What's behind the headline?
Resilience of bumblebees highlights their remarkable adaptability. The study shows that their low metabolic rate during diapause, combined with underwater gas exchange via a physical gill, enables survival in flooded conditions. This suggests that bumblebees may better withstand climate-induced flooding than previously thought. However, the long-term impacts remain uncertain, especially as climate change accelerates. The ability to survive floods could help maintain pollinator populations, but it also raises questions about how other species, less adaptable or with limited diets, will fare. This research underscores the importance of understanding insect physiology in predicting ecological responses to climate change, and it signals that some pollinators may be more resilient than expected, potentially influencing conservation strategies.
What the papers say
The Independent reports that the discovery was made by chance when ecologist Sabrina Rondeau noticed queen bees surviving in waterlogged containers, leading to experiments that confirmed their underwater survival. The New York Times emphasizes the insects' ability to breathe underwater through a physical gill, a rare trait among terrestrial insects. Both sources highlight the significance of the low metabolic rate during diapause and the potential implications for pollinator resilience amid increasing spring floods. While The Independent focuses on the scientific process and findings, The New York Times underscores the physiological mechanisms involved, providing a comprehensive view of this remarkable adaptation.
How we got here
The discovery stems from research into bumblebee diapause, a hibernation-like state during winter. Researchers recreated winter conditions in labs and observed queens submerged in water for extended periods. The study was prompted by observations of queens surviving waterlogged burrows after rain and snowmelt, challenging previous assumptions about their vulnerability to flooding.
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