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Heatwaves Slash Bee Fertility, Threatening Crops
1 Jul
Summary
- Extreme heatwaves significantly reduce bee fertility.
- Male bee sperm activity dropped by 50% after heat exposure.
- Reduced bee populations impact pollination of crucial food crops.
Recent laboratory simulations of a UK heatwave revealed a significant detrimental impact on solitary red mason bees. Researchers observed that male bees exposed to extreme heat for three days experienced a 50% reduction in sperm activity compared to a control group. Female bees in the heatwave group showed a 15% decrease in the size and number of developing eggs.
These findings, published in the Journal of Thermal Biology, indicate that a single heatwave event could lead to a substantial decrease in bee populations in the following year. Given that over 90% of UK bee species are solitary, this decline has serious consequences for the pollination of vital food crops such as apples and oilseed rape, potentially affecting agricultural yields.
