This podcast explores the arrival and impact of Asian hornets in the UK, focusing on their threat to bee populations. It discusses the government's response to the invasion, the importance of tackling invasive species, and strategies for coping with environmental changes in Europe.
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Quick takeaways
Yellow-legged hornets pose a significant threat to honey bees and native insects in Europe, preying on bees and disrupting their foraging activity, while also targeting native insects and able to build nests in urban areas.
Efforts are being made to track and manage yellow-legged hornets in Guernsey, Jersey, and the UK through bait stations and visual tracking, with the UK government taking proactive measures; eradicating these invasive hornets entirely may be challenging.
Deep dives
The Threat of Yellow-Legged Hornets to Honey Bees and Native Insects
The podcast highlights the danger posed by yellow-legged hornets, an invasive species from Southeast Asia, to honey bees and native insects in Europe. These hornets target honey bee hives, preying on bees and disrupting their foraging activity, which can lead to starvation for the hive. They also feed on native insects and have the ability to build nests in urban and suburban areas. The spread of the yellow-legged hornets is facilitated by global trade, and they have already established a presence in France and Spain. Efforts are underway to track and locate their nests in order to control their population.
Tracking and Managing Yellow-Legged Hornets
The podcast discusses the efforts made in Guernsey, Jersey, and the mainland UK to track and manage yellow-legged hornets. Through bait stations and visual tracking, beekeepers and volunteers work to locate the nests of these hornets and destroy them. The UK government has also taken proactive measures, including risk assessments and public awareness campaigns. The hope is to slow the spread and limit the damage caused by these invasive hornets, although eradicating them entirely may be challenging.
Dealing with Invasive Species and Climate Change
The podcast explores the broader issue of invasive species and their impact on ecosystems worldwide. With increasing globalization and climate change, the spread of invasive species has become a significant threat. Managing their spread early on is more effective and economical than dealing with established populations. However, there are debates about accepting some level of change in ecosystems and the need for public engagement in determining acceptable levels of change. Understanding and studying these species is essential for effective management.
Asian hornets have been spotted in the UK in record numbers this year, sparking concern about what their presence could mean for our native insects, and in particular bee populations. Madeleine Finlay speaks to ecologist Prof Juliet Osborne about why this species of hornet is so voracious, how European beekeepers have been impacted by their arrival, and how scientists and the government are attempting to prevent them from becoming established here. Help support our independent journalism at theguardian.com/sciencepod
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