Invasive and toxic hammerhead worms make themselves at home in Ontario
Ontario is now home to an invasive and toxic worm species that can grow up to three feet long and can be dangerous to small animals and pets.
Numerous reports have been made that hammerhead worms, also known as the broadhead planarian, have been recently spotted in Newmarket, Hamilton, and the Kitchener area.
“They are here,” John Reynolds, a laboratory biologist and worm expert told CTV News Toronto on Friday. “People are surprised to see them because they’re just so unusual. People are not used to seeing them. They are a semi-tropical organism originally.”
The worms, originally from Southeast Asia, were likely brought into the province accidently through nursery stock material possibly from the U.S., Reynolds said. For years, the worms have been spotted across America and in Quebec.
“They don’t go very far on their own. They need to be transported,” Reynolds said. “They can spread quickly because if you cut them up, each piece becomes a new individual.”
The hammerhead worm, which gets its name due to the flat shape of its head, has a very dangerous neurotoxin called tetrodotoxin which is also found in pufferfish, Reynolds said. While the toxin can be lethal for small animals, it will only produce a rash for people.
“They are not seriously harmful to people,” he said. “They may make an awful rash and make your hands tingly for a bit. If you ingest one by mistake, it will just make you nauseous. It certainly won’t be fatal.”
The Kitchener-based worm expert advised people to not pick up the worms with their bare hands, and to always use gloves or a shovel to pick them up.
People have made reports and posted photos of the hammerhead worms they have found in Ontario on iNaturalist.ca, an invasive and native species reporting platform. The most recent reports are from the end of March but there are reports of the worms in the province dating back to 2019.
“These worms have been here, but in such low numbers that they were originally overlooked, but they just become more visible recently,” Reynolds said, adding that as the number of these worms increase, the more sightings and more awareness there will be.
Emily Posteraro from the Invasive Species Centre told CTV News Toronto on Friday that she encourages people to report any sightings of the worms or any invasive species to the centre or on iNaturalist.ca. In some cases, she added, it would be important to report an invasive species to the Canadian Food Inspection Agency.
“Ideally get the precise location information, an address,” she said. “And get some photos because that’s really the only way the detection can be verified.”
Ontario’s Ministry of Natural Resources and Forestry told CTV News Toronto that they are encouraging people to report sightings via the Early Detection and Distribution Mapping System, which is an online tracking system.
CTVNews.ca Top Stories
Community mourns victims of fatal boat crash near Kingston, Ont.
The three people killed in last weekend's tragic collision between a speedboat and a fishing boat north of Kingston are being remembered Friday.
A woman took her dog to a shelter to be euthanized. A year later, the dog is up for adoption again
Exhausted and short on options after consulting two veterinary clinics, Kristie Pereira made the gut-wrenching decision last year to take her desperately ill puppy to a Maryland shelter to be euthanized.
Humboldt Broncos crash victims and families react to decision to deport truck driver
The family of one of the victims of the Humboldt Broncos bus crash in 2018 says they are 'thankful' for a decision by a Calgary immigration board to deport the driver of the truck involved.
'God forgives but we don’t': Loud outburst from stabbing victim’s family during sentencing hearing
An emotional outburst in a London, Ont. courtroom Friday disrupted the sentencing hearing of a woman who pleaded guilty for her part in the death of 29-year-old Mohammed Abdallah.
American Airlines drops law firm that said a 9-year-old girl should have seen camera on toilet seat
American Airlines has replaced the law firm that told a judge a nine-year-old girl was negligent in not noticing there was a camera phone taped to the seat in an airplane lavatory.
Luciano Benetton says he's stepping down as chairman of family-run brand as losses top US$100 million
Luciano Benetton, a co-founder of the apparel brand, announced he was stepping down as chairman in an interview published on Saturday with Milan daily Corriere della Sera. He blamed current management for losses of 100 million euros (US$108.5 million) that he discovered last year.
Toddler dies after being struck by recycling truck in Barrie, Ont. neighbourhood
A toddler has died after being struck by a recycling truck in a Barrie, Ont. neighbourhood on Thursday afternoon.
1 dead, 3 in hospital after flying wheel crashes into bus windshield on QEW
A man is dead, and three others are in hospital after a flying wheel crashed into a coach bus on the QEW in St. Catharines.
How to keep insects out of your house, according to an entomologist and other experts
Now that temperatures have warmed up even more this spring, you may be anxious at the thought of bugs invading your home or you may already be battling the pests. Here are expert tips on how to keep them away.