地下にできたオオスズメバチの巣をせん滅する

Key Takeaways

• Japanese giant hornets in autumn aggressively hunt other insects to provide protein for the next generation of queens and males, making them highly focused on food sources.
• Tracking hornets back to their nest is best achieved by attaching a lightweight, aerodynamic marker (a 'koyori') to a foraging hornet, which acts as a visual guide for human trackers.
• The 'koyori' attachment technique requires precise knotting to ensure the marker hangs vertically, preventing it from interfering with the hornet's flight or causing unnecessary stress.
• Hornets are remarkably docile while actively feeding or constructing meat balls, allowing researchers to handle them safely without triggering defensive stinging behavior.
• Using a 'bait station' with a specific design prevents hornets from getting stuck in honey, allowing them to feed, return to the nest, and create a repeatable flight path for tracking.
• Locating underground hornet nests in dense, sloped terrain is most effective when using a combination of aerial drone surveillance and ground-based human teams to spot returning marked hornets.
• Safety protocols for nest extraction include wearing specialized protective gear with spacers to prevent long stingers from reaching the skin, especially when working in hazardous, steep environments.