The Battle Against Hornets: A New Zealand Innovation Steps Up
In a thrilling development, a scientific breakthrough from the South Island is now leading the charge against a deadly invader in Auckland. But here's where it gets controversial: this innovative insecticide bait, known as Vespex, has a unique twist that could change the game.
Vespex, developed by Nelson-based entomologist Richard Toft, is a specially formulated protein bait that honey bees wisely avoid. It's been a game-changer for controlling common and German wasps, but now it's being trialed against the yellow-legged hornet, a formidable invader on Auckland's North Shore. With around 51 confirmed queen hornets and 61 nests already identified, timing is critical.
The bait, which took Toft over two decades to perfect, has already earned international acclaim. In 2015, Toft's work was recognized with a WWF Conservation Innovation Award, highlighting the significant impact this bait can have on protecting native forests, insects, and birdlife from invasive wasps.
But here's the intriguing part: Vespex is being deployed at a specific stage of the breeding cycle, and this is the part most people miss. At this stage, wasps and hornets shift their diet to more protein-based food sources, making Vespex an attractive and deadly option. Scott Sinclair from Biosecurity NZ explains, "The bait gets ingested by a whole lot of hornets or wasps in the nest, leading to a significant die-off."
And this is where the controversy lies: while Vespex has proven effective against common and German wasps, its success against hornets is still being determined. Some studies in France suggest hornets might find it appealing, but Biosecurity NZ is still analyzing data to pinpoint the best deployment time.
"The protein-based baits will be more effective against hornets later in the season," Sinclair says. "We're trying to determine the exact timing based on our dissections of hornet nests. The likely window is in the coming weeks."
Vespex is now manufactured and sold by Nelson-based company Merchento, with Toft as its director. It's been extensively used by the Department of Conservation for wasp control, and now it's time to see if it can tackle the hornet invasion.
So, will Vespex be the hero we need to eradicate the hornet threat? Only time will tell, but one thing's for sure: this innovative bait is a powerful tool in our arsenal against invasive species. What do you think? Is this a promising strategy, or are there potential pitfalls we should consider? Let's discuss in the comments!
