How Ordinary Pets Are Helping Sniff Out a Crop-Killing Invasive Pest

If you’ve ever taken your dog for a walk and watched them pause to sniff a tree for what feels like an eternity, you might’ve thought they were just being nosy. But what if that dog could actually be helping to save local crops, vineyards, and entire ecosystems?

That’s exactly what’s happening in a groundbreaking trial led by researchers at Virginia Tech. In the fight against the spotted lanternfly, an invasive insect wreaking havoc on crops across the eastern United States, dogs are proving to be an unexpected but powerful weapon.

The spotted lanternfly, originally from Asia, was first spotted in Pennsylvania in 2014. Since then, it’s spread rapidly across 18 states, threatening everything from grapevines and apple orchards to hardwood trees. What makes them particularly difficult to control is how and where they lay their eggs, on tree trunks, stone, vehicles, and other hard surfaces. These egg masses, often mistaken for dirt or lichen, are notoriously tough to spot with the human eye.

“Finding them is like searching for a needle in a haystack,” says Mizuho Nita, a plant pathologist at Virginia Tech and co-author of the field study.

But here’s where dogs come in. With a sense of smell tens of thousands of times sharper than ours, they’re capable of detecting the lanternfly’s egg masses, even when they’re tucked away in the tiniest crevices of bark or under stones.

Until now, most detection work has relied on professionally trained conservation dogs. The problem? They’re expensive and in short supply.

Sally Dickinson, who recently earned her Ph.D. from Virginia Tech’s College of Agriculture and Life Sciences, had a bold idea, why not train ordinary pet dogs to do the job?

With that, a citizen science project was born.

A total of 182 dog-owner teams from across the U.S. signed up to participate. They were provided with safe, non-hatching lanternfly egg masses to use for training. Under the guidance of local trainers, owners taught their dogs how to recognize the scent, much like playing a scent-based scavenger hunt.

After months of practice, dogs were tested in two settings. First, an indoor controlled environment where they had to identify the correct box containing the egg mass among others. Then, a real-world outdoor test, much closer to the type of search a dog might do in a park or backyard.

The results were impressive: dogs correctly identified the egg masses 82% of the time indoors, and 61% outdoors. And of those that passed both tests, 92% could identify live egg masses with barely any extra training.

The implications are huge. Vineyards, orchards, and farms across the eastern U.S. have been struggling to contain the damage caused by lanternflies. With each female laying up to 50 eggs at a time, early detection is critical.

“These teams demonstrated that citizen scientists and their dogs can play a meaningful role in protecting agriculture and the environment from invasive species,” Dickinson said.

So next time your dog stops to sniff a tree, maybe let them linger. They could be doing more than just checking the local “pee-mail”, they might just be saving your local farmer’s harvest.

 

News Source @GoodNewsNetwork