Showing posts sorted by relevance for query HORNET. Sort by date Show all posts
Showing posts sorted by relevance for query HORNET. Sort by date Show all posts

Tuesday, May 05, 2020

IT CAME FROM CANADA

'Murder Hornets,’ with sting that can kill, land in US

4 of 6
In this Dec. 30, 2019, photo provided by the Washington State Department of Agriculture, a dead Asian giant hornet is photographed in a lab in Olympia, Wash. The world's largest hornet, a 2-inch long killer with an appetite for honey bees, has been found in Washington state and entomologists are making plans to wipe it out. Dubbed the "Murder Hornet" by some, the Asian giant hornet has a sting that could be fatal to some humans. It is just now starting to emerge from hibernation. (Quinlyn Baine/Washington State Department of Agriculture via AP)

SPOKANE, Wash. (AP) — The world’s largest hornet, a 2-inch killer dubbed the “Murder Hornet” with an appetite for honey bees, has been found in Washington state, where entomologists were making plans to wipe it out.

The giant Asian insect, with a sting that could be fatal to some people, is just now starting to emerge from winter hibernation.

“They’re like something out of a monster cartoon with this huge yellow-orange face,” said Susan Cobey, a bee breeder at Washington State University.

“It’s a shockingly large hornet,” said Todd Murray, a WSU Extension entomologist and invasive species specialist. “It’s a health hazard, and more importantly, a significant predator of honey bees.”

The hornet was sighted for the first time in the U.S. last December, when the state Department of Agriculture verified two reports near Blaine, Washington, close to the Canadian border. It also received two probable, but unconfirmed reports from sites in Custer, Washington, south of Blaine.



In this Dec. 30, 2019, photo provided by the Washington State Department of Agriculture, the stinger of a dead Asian giant hornet is photographed in a lab in Olympia, Wash. The world's largest hornet, a 2-inch long killer with an appetite for honey bees, has been found in Washington state and entomologists are making plans to wipe it out. Dubbed the "Murder Hornet" by some, the Asian giant hornet has a sting that could be fatal to some humans. It is just now starting to emerge from hibernation. (Karla Salp/Washington State Department of Agriculture via AP)


The hornet can sting through most beekeeper suits, deliver nearly seven times the amount of venom as a honey bee, and sting multiple times, the department said, adding that it ordered special reinforced suits from China.

The university said it isn’t known how or where the hornets arrived in North America. It normally lives in the forests and low mountains of eastern and southeast Asia and feeds on large insects, including wasps and bees. It was dubbed the “Murder Hornet” in Japan, where it is known to kill people.

The hornet’s life cycle begins in April, when queens emerge from hibernation, feed on plant sap and fruit, and look for underground dens to build their nests. Hornets are most destructive in the late summer and early fall. Like a marauding army, they attack honey bee hives, killing adult bees and devouring larvae and pupae, WSU said.

BFH!

In this April 23, 2020, photo provided by the Washington State Department of Agriculture, dead Asian giant hornets sit on a researcher's field notebook in Blaine, Wash. The world's largest hornet, a 2-inch long killer with an appetite for honey bees, has been found in Washington state and entomologists are making plans to wipe it out. Dubbed the "Murder Hornet" by some, the Asian giant hornet has a sting that could be fatal to some humans. It is just now starting to emerge from hibernation. (Karla Salp/Washington State Department of Agriculture via AP)

Their stings are big and painful, with a potent neurotoxin. Multiple stings can kill humans, even if they are not allergic, the university said.

Farmers depend on honey bees to pollinate many important northwest crops such as apples, blueberries and cherries. With the threat from giant hornets, “beekeepers may be reluctant to bring their hives here,” said Island County Extension scientist Tim Lawrence.

An invasive species can dramatically change growing conditions, Murray said, adding that now is the time to deal with the predators.


In this April 23, 2020, photo provided by the Washington State Department of Agriculture, a researcher holds a dead Asian giant hornet in Blaine, Wash. The world's largest hornet, a 2-inch long killer with an appetite for honey bees, has been found in Washington state and entomologists are making plans to wipe it out. Dubbed the "Murder Hornet" by some, the Asian giant hornet has a sting that could be fatal to some humans. It is just now starting to emerge from hibernation. (Karla Salp/Washington State Department of Agriculture via AP)

“We need to teach people how to recognize and identify this hornet while populations are small, so that we can eradicate it while we still have a chance,″ Murray said.

The state Department of Agriculture will begin trapping queens this spring, with a focus on Whatcom, Skagit, San Juan, and Island counties.


Hunting the hornets is no job for ordinary people.

“Don’t try to take them out yourself if you see them,” Looney said. “If you get into them, run away, then call us!″


In this April 23, 2020, photo provided by the Washington State Department of Agriculture, Chris Looney, a Washington State entomologist, places a trap used to search for the Asian giant hornet in Blaine, Wash. The world's largest hornet, a 2-inch long killer with an appetite for honey bees, has been found in Washington state and entomologists are making plans to wipe it out. Dubbed the "Murder Hornet" by some, the Asian giant hornet has a sting that could be fatal to some humans. It is just now starting to emerge from hibernation. (Karla Salp/Washington State Department of Agriculture via AP)


Invasive Asian giant hornet discovered in Washington state


Invasive Asian giant hornets, a honeybee-killing wasp with a dangerous sting, have been discovered in Washington. Photo courtesy of the Washington State Department of Agriculture

DENVER, May 2 (UPI) -- Washington agriculture authorities are asking residents to be on the lookout for an invasive giant wasp with an "excruciating" sting that attacks honeybee colonies, leaving thousands of bees without heads.

"The Asian giant hornet been called the most venomous, intimidating insect in the world, and it even scares away other hornets," said Timothy Lawrence, director of the Island County extension office at Washington State University.

Asian giant hornets originating in South Korea were first reported last fall near Vancouver Island in British Columbia. Then, residents in Blaine, Wash., near the Canadian border, used an invasive species app to report wasps that were confirmed to be Asian giant hornets from Japan, the state agriculture department said.



An infestation of the new giant wasps could be devastating for beekeepers who bring their hives to the state to pollinate Northwest Pacific crops like cherries, blueberries and apples.

"Commercial beekeepers have 300 to 400 hives in the area. They may not want to go to certain counties if this infestation takes hold," Lawrence said.

In Europe, the invasive yellow-legged Asian hornets, which also kill honeybees and other pollinators, has caused millions of dollars' worth of damage to crops in France and elsewhere after they gained a foothold.

The Asian giant hornets, also called "yak-killer hornets," measure about 2 inches long and have an orangeish-yellow face with large black eyes.


"They're like something out of a monster cartoon," Susan Cobey, a bee breeder with WSU's Department of Entomology, said in a statement.

The Asian giant hornet's sting is described as excruciating, and they can sting repeatedly. Their quarter-inch stinger can penetrate beekeeping protective clothing, a state agriculture department warning said.

The wasps are dangerous if their underground nests are disturbed, or if a food source is threatened. Their venom, seven-times stronger than that of honeybees, can cause anaphylactic shock, but also can be lethal to people who are not allergic if victims are stung repeatedly.



"They give a warning before they sting. They snap their mandibles and make a clicking sound," Lawrence said. "But if you stick around to notice that, you're probably already in a world of hurt."

The wasps might have hitched a ride to the Pacific Coast in a container ship, but also could have been imported intentionally as an ingredient for a folk recipe for wasp venom in alcohol, made popular by Internet bodybuilders, entomologists think.

The life cycle of the Asian giant hornet begins when a queen emerges from hibernation in April and feeds on plant sap and fruit, looking for a spot to build an underground nest, according to state fact sheets. By summer, queens have created a colony of worker wasps that spread out to seek food.

RELATED Invasive Asian hornet could cost Europe millions in damages

At the end of the summer, the hornets enter a "high-protein demand" phase when they attack honeybee colonies, killing off the adults to feast on the immature brood of pupa and larva, scientists say.

The hornets will leave piles of dead bees, most of them headless, outside their beehive. A few dozen hornets can kill an entire colony of 30,000 bees in a few hours.

Scientists will be hunting for queens this spring, wearing special reinforced suits from China, said Rian Wojahn, eradication coordinator for the pest program at the Washington State Department of Agriculture.

"The suits are made out of thick foam material with everything -- boots, gloves, hat -- attached," Wojahn said.

Trappers have set out bait bottles, filled with orange juice and rice wine, in coordination with state beekeeper clubs.

The trappers will use heat cameras to find underground nests, Wojahn said. Wasps will be sedated with carbon dioxide fire extinguishers, and pest workers will dig out the nests.

Local entomologists worry about native bees and other pollinators that also might be threatened if the Asian giant hornet gets established, said Todd
differences between bees, wasps & hornets. good to know! | Bee ...
RIGHT CLICK TO ENLARGE


The major difference between wasp and hornets is size and colour. ... Hornets (right) are larger. Wasps have black and yellow rings, while hornets have black and white rings. Bees are beneficial to humans because they pollinate plants, whereas wasps and hornets help out by eating other insects
If you are on this page, you most likely have found a swarm of ...
RIGHT CLICK TO ENLARGE
RIGHT CLICK TO ENLARGE
https://kottke.org/18/08/a-comprehensive-guide-to-yellow-stripey-things


In Japan, the ‘Murder Hornet’ Is Both a Lethal Threat and a Tasty Treat

© Ted S. Warren/Associated Press Asian giant hornets from Japan in a display case at the Washington State Department of Agriculture.

TOKYO — Long before the Asian giant hornet began terrorizing the honeybees of Washington State, the ferocious insects posed a sometimes lethal threat to hikers and farmers in the mountains of rural Japan.

But in the central Chubu region, these insects — sometimes called “murder hornets” — are known for more than their aggression and excruciating sting. They are seen as a pleasant snack and an invigorating ingredient in drinks.

The giant hornet, along with other varieties of wasps, has traditionally been considered a delicacy in this rugged part of the country. The grubs are often preserved in jars, pan-fried or steamed with rice to make a savory dish called hebo-gohan. The adults, which can be two inches long, are fried on skewers, stinger and all, until the carapace becomes light and crunchy. They leave a warming, tingling sensation when eaten.

The hornets can also give liquor an extra kick. Live specimens are drowned in shochu, a clear distilled beverage. In their death throes, the insects release their venom into the liquid, and it is stored until it turns a dark shade of amber.

The real thrill, however, is not in the eating or drinking of the giant hornet, but in the hunt.

Setting out in the early summer months, intrepid hunters track the insects to their huge nests, which can house as many as a thousand hornets and their larvae, in the boles of rotting trees or underground. They lure a hornet with a streamer attached to a piece of fish, and when it grabs the morsel and takes off, the hunting party goes on a steeplechase through the woods. Upon finding the nest, the hunters stun the insects with smoke, then use chain saws and shovels to extract it.

In other cases, the nests are rooted out by professional exterminators. Torao Suzuki, 75, said he removed 40 to 50 nests a year, getting stung as many as 30 times each season. “It hurts, it swells and it turns red, but that’s about it,” he said about the stings. “I guess I’m immune.”

He does not eat the bugs himself. “Even when I tell people, they’re going to sting you, they still eat them. They say it makes them potent,” he said.

Mr. Suzuki said he also sold the nests, which are popular trophies throughout the region. Lacquered brown hives, sometimes cut open to expose their complex lattice work, adorn vestibules and reception rooms in homes, schools and public offices.

Historians say the insects, which range throughout Asia but are found most commonly in Japan, were once valued along with other wasps as a cheap source of protein in poverty-stricken rural areas.

The cuisine is celebrated each November in Gifu Prefecture at a festival, known as the Kushihara Hebo Matsuri, where prizes are handed out for the largest nests, and gourmands bid for the privilege of taking one home with them.

Even at this insect jubilee, the danger posed by the giant hornet, which has killed dozens of people in Japan in recent years, is evident. A flyer for the 2018 event warned participants to be on the lookout for hornets on the loose near the fairgrounds, advising attendees to “please take ample care to avoid being stung.” Organizers, it added, “bear absolutely no responsibility” for the consequences of ignoring the warnings.

The admonitions go well beyond this single event. Every spring, government offices across the country issue advisories about the bugs, known in Japan as “giant sparrow hornets” because of their size. People venturing into the wild have learned to avoid hair spray and perfume, which can attract the frightening pests.

So it may be no surprise that the practice of hunting and eating the insects, as with many traditions in aging rural Japan, is less common than it used to be.

The Oomachi Wasp Appreciation Society in Nagano once achieved some measure of national fame for making rice crackers with the insects baked in. Production has since stopped, as the group’s members have died or become too old to make the snacks, said Sachiko Murayama, 70, who is on the board of a local business cooperative.

In Japanese cities, however, there has been a small resurgence in interest in eating bugs. Some young people are attracted to the novelty, and to the idea that insects are an environmentally friendly source of protein.

In Tokyo, the giant hornet is on the menu at more than 30 restaurants.

Shota Toguchida, who owns a Chinese restaurant in the city, said he sold shots of homemade hornet liquor for 2,000 yen, or about $19, mostly to middle-aged men.

He keeps a few bottles on the bar. “It looks surprising, but tastes great,” he said.

In the United States, where the first Asian giant hornets were spotted last fall in northwestern Washington State and scientists are urgently trying to hunt them down, no one is thinking about the insects’ culinary potential. The focus is solely on eradicating them before they can spread and wipe out bee populations.

Takatoshi Ueno, an entomologist at Kyushu University, said he was mystified by the hornet’s appearance on the American West Coast.

“It’s impossible for them to fly over from Asia,” he said, adding that they most likely came over in a shipping container. Even that, though, would be extraordinarily unlikely, he said, given their extreme aggression, which would have almost certainly drawn the attention of a ship’s crew.

They might not have come from Japan, Dr. Ueno said; they could have arrived from another country in the region. But regardless of how they arrived in Washington State, he added, it is critical that they be dealt with before they have a chance to establish themselves.

“When dealing with invasive species, whether a virus or an insect, it’s the same,” he said. “Moving quickly to completely destroy them is the best. Ultimately, it’s the cheapest and least damaging.”

For any adventurous eaters in the Pacific Northwest who might be tempted to track down and sample the species, Dr. Ueno strongly warns against it. Encounters with the insect are not for the faint of heart, he said.

“Americans have probably never seen such a large hornet,” he said, adding that “some of them might faint dead away.”

Hisako Ueno and Makiko Inoue contributed reporting.

Friday, May 08, 2020

Bug experts dismiss worry about US ‘murder hornets’ as hype

yesterday

1 of 17
FILE - In this April 23, 2020, photo provided by the Washington State Department of Agriculture, a researcher holds a dead Asian giant hornet in Blaine, Wash. FILE - This Dec. 30, 2019 photo provided by the Washington State Department of Agriculture shows a dead Asian giant hornet in a lab in Olympia, Wash. It is the world's largest hornet, a 2-inch long killer with an appetite for honey bees. Dubbed the "Murder Hornet" by some, the insect has a sting that could be fatal to some humans. (Karla Salp/Washington State Department of Agriculture via AP)Insect experts say people should calm down about the big bug with the nickname “murder hornet” — unless you are a beekeeper or a honeybee.
The Asian giant hornets found in Washington state that grabbed headlines this week aren’t big killers of humans, although it does happen on rare occasions. But the world’s largest hornets do decapitate entire hives of honeybees, and that crucial food pollinator is already in big trouble.
Numerous bug experts told The Associated Press that what they call hornet “hype” reminds them of the 1970s public scare when Africanized honeybees, nicknamed “killer bees,” started moving north from South America. While these more aggressive bees did make it up to Texas and the Southwest, they didn’t live up to the horror-movie moniker. However, they also do kill people in rare situations.
This time it’s hornets with the homicidal nickname, which bug experts want to ditch.
“They are not ‘murder hornets.’ They are just hornets,” said Washington Agriculture Department entomologist Chris Looney, who is working on the state’s search for these large hornets.
The facts are, experts said, two dead hornets were found in Washington last December, a lone Canadian live nest was found and wiped out last September and no live hornets have yet been seen this year.
Looney has a message for Americans: These hornets are not coming to get you. “The number of people who are stung and have to seek medical attention is incredibly small,” he said in an interview.
While its nickname exaggerates the human health threat, experts said this hornet is especially big — two inches long — so it does carry more and stronger toxin.
“It’s a really nasty sting for humans,” said University of Georgia bee expert Keith Delaplane. “It’s like the Africanized bee ... A dozen (stings) you are OK; 100 not so much.”
University of Illinois entomologist May Berenbaum said of the worry: “People are afraid of the wrong thing. The scariest insect out there are mosquitoes. People don’t think twice about them. If anyone’s a murder insect, it would be a mosquito.”
Mosquitoes are responsible for millions of yearly deaths worldwide from malaria, dengue fever and other diseases, according to the World Health Organization. Asian giant hornets at most kill a few dozen people a year and some experts said it’s probably far less.
Hornet, wasp and bee stings kill on average 62 people a year in the United States, according to the Centers for Disease Control and Prevention.
In Japan, Korea and China, “people have co-existed with this hornet for thousands of years,” said Doug Yanega, senior scientist at the University of California Riverside Entomology Research Museum.
Yet bug experts across the country are getting worried calls from people who wrongly think they saw the Asian hornet.
“This is 99% media hype and frankly I’m getting tired of it,” said University of Delaware entomologist Doug Tallamy. “Murder hornet? Please.”
Retired University of Montana bee expert Jerry Bromenshenk said in an email, “One nest, one individual hornet, hopefully, does not make an invasion. ... Do we want this hornet — surely not. But the media hype is turbo charged.”
For bees and the people who rely on them for a living this could be yet another massive problem, but it is not one yet.
The number of U.S. honeybees has been dropping for years, with the winter of 2018-19 one of the worst on record. That’s because of problems such as mites, diseases, pesticides and loss of food.
The new hornets would be different. If they get into a hive, they tear the heads off worker bees and the hive pretty much dies. Asian honeybees have defenses — they start buzzing, raising the temperature and cook the invading hornet to death — but honeybees in America don’t.
The worry for beekeeping in Washington is based on a worst-case scenario that officials have to take seriously, Looney said.
Yet even for bees, the invasive hornets are far down on the list of real threats, not as big a worry as the parasitic “zombie fly” because more of those have been seen in several states, Berenbaum said.
For people, the hornets are scary because the world is already frightened by coronavirus and our innate fight-or-flight mechanisms are activated, putting people on edge, said risk expert David Ropeik, author of “How Risky Is It, Really?”
“This year is unbelievable in a horrible, horrible way. Why shouldn’t there be murder hornets?” Berenbaum said.

___
Follow Seth Borenstein on Twitter: @borenbears
___
The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.

Wednesday, October 14, 2020

Washington state again fails to live-track murder hornet
By SALLY HO
October 12, 2020


In this Oct. 7, 2020, photo provided by the Washington State Department of Agriculture, a live Asian giant hornet is affixed with a tracking device before being released near Blaine, Wash. Washington state officials say they were again unsuccessful at live-tracking an Asian giant hornet while trying to find and destroy a nest of the so-called murder hornets. The Washington State Department of Agriculture said Monday, Oct. 12, 2020, that an entomologist used dental floss to tie a tracking device on a female hornet, only to lose signs of her when she went into the forest. (Karla Salp/Washington State Department of Agriculture via AP)


SEATTLE (AP) — Washington state officials said Monday they were again unsuccessful at live-tracking a “murder” hornet while trying to find and destroy a nest of the giant insects.

The Washington State Department of Agriculture said an entomologist used dental floss to tie a tracking device on a female hornet, only to lose signs of her when she went into a forest.

The hornet was captured on Oct. 5 and kept alive with strawberry jam, which she seemed to enjoy, said Sven Spichiger, a department entomologist.

Scientists then tied a tracking device onto her body and released her two days later onto an apple tree. They lost track of her after she went through some blackberry bushes, though officials believe the tracker was still attached at the time of its last signal.

“This one was a lot feistier,” Spichiger said.

A total of 18 hornets have been found in the state since they were first seen last year near the U.S.-Canadian border, the agriculture department said.

Officials earlier in the month reported trying to glue a radio tag to another live hornet so they could follow it back to its nest, but the glue did not dry fast enough. The radio tag fell off and the hornet ultimately could not fly.

In this Oct. 7, 2020, photo provided by the Washington State Department of Agriculture, a live Asian giant hornet with a tracking device affixed to it sits on an apple in a tree where it was placed, near Blaine, Wash. Washington state officials say they were again unsuccessful at live-tracking an Asian giant hornet while trying to find and destroy a nest of the so-called murder hornets. The Washington State Department of Agriculture said Monday, Oct. 12, 2020, that an entomologist used dental floss to tie a tracking device on a female hornet, only to lose signs of her when she went into the forest. (Karla Salp/Washington State Department of Agriculture via AP)


The Asian giant hornet — the world’s largest at 2 inches (5 centimeters) — can decimate entire hives of honeybees and deliver painful stings to humans. Farmers in the northwestern U.S. depend on those honey bees to pollinate many crops, including raspberries and blueberries.

Despite their nickname, the hornets kill at most a few dozen people a year in Asia, and experts say it is probably far less. Hornets, wasps and bees typically found in the United States kill an average of 62 people a year, the Centers for Disease Control and Prevention has said.

The real threat from the ”murder” hornets is their devastating attacks on honeybee hives, and the time of year when they attack those hives is nearing, Spichiger said. He called it the “slaughter phase.”


Thursday, October 29, 2020

Two ‘murder hornet’ queens captured in Washington state sting

By Josh K. Elliott Global News
Posted October 29, 2020 


WATCH: Washington State authorities captured two Asian giant hornet queens, known as "murder hornets," on Wednesday, four days after officials eradicated the first nest found in Blaine, just south of the Canadian border, on Oct. 24 
https://globalnews.ca/news/7429274/murder-hornet-queen-nest/

God save the queens — for research purposes.

Wildlife officials in Washington have captured two so-called “murder hornet” queens, following a major operation to wipe out the invasive species’ first known nest in the United States.

You might even call the operation a “sting,” as it took a bit of subterfuge to finally capture the Asian giant hornet queens. Entomologists trapped three hornet drones last week, then tagged them with radio trackers and followed them back to their nest.

The nest was located inside a tree in Blaine, Wash., just south of the border with British Columbia.

State wildlife officials wrapped the tree in plastic and vacuumed up the colony on Oct. 24, then toppled the tree on Wednesday to dig the queen out of hiding.
1:25 Scientists remove 98 murder hornets from Washington state nest near B.C. border
https://globalnews.ca/news/7429274/murder-hornet-queen-nest/

Entomologists actually found two queens inside the nest, the Washington State Department of Agriculture says. The queens were either two “virgins” preparing to strike out and found their own colonies, or one virgin and one old queen who may have spawned the nest.

Officials shared video of the captured queens on Wednesday. The video shows the two black-and-yellow, thumb-sized behemoths crawling around inside separate glass vials.

Two captive Asian giant hornet queens are shown in Washington state on Oct. 28, 2020. Washington State Department of Agriculture

Entomologists captured 13 live hornets in addition to the queens. They also killed 85 more by sucking them up with high-tech vacuums.

Asian giant hornets are native to China and Japan but they started spreading into North America last year, sparking fear that they might decimate vulnerable honey bee hives in the U.S. and Canada. The first ones were spotted near Nanaimo, B.C., in August 2019.

The insects were nicknamed “murder hornets” earlier this year, and that name is well-deserved. A handful of the armoured hornets can wipe out an entire honeybee colony in an afternoon, slaughtering the bees one by one while shrugging off hundreds of stings. The hornets then capture the honeybees’ young and bring them back to the nest for food.

READ MORE: Asian giant hornet is death on wings for bees in North America

Murder hornets are relatively huge when compared to the bees they prey upon. Each one measures four to five centimetres (1.5 to 2 inches) long, and has a toxic stinger that can cause excruciating pain for humans. One victim described the sting as a “red-hot thumbtack” earlier this year.

Their heads are completely yellow with two big, black eyes. Their bodies are black and their abdomens are striped black and yellow.

This handout chart shows the Asian giant hornet compared to other North American insects. Washington State Department of Agriculture

The hornets do not pose a major threat to humans, despite their threatening nickname. They are unlikely to sting unless they feel the nest is threatened; dozens of people die in Asia each year after stumbling upon a nest without protection

Washington entomologists wore state-of-the-art suits to deal with the hornets this week. Their puffy white outfits looked like a cross between a spacesuit and a hazmat suit, and were designed to protect them from swarms of stinging murder hornets.

Entomologists hold a canister containing dozens of Asian giant hornets after eradicating a nest in Washington state on Oct. 24, 2020. Washington State Department of Agriculture

Wildlife officials are hailing the operation as a good first step in the fight against the Asian giant hornet.

Officials in the U.S. and Canada have been setting traps for the hornets along the West Coast since last year.
1:27 Why arrival of ‘Murder hornet’ in North America could cause danger for bees, concerns for humans https://globalnews.ca/news/7429274/murder-hornet-queen-nest/

The first confirmed nest in Canada was wiped out last fall on Vancouver Island.

Anyone who sees one of the Asian giant hornets in B.C. is urged to immediately contact the Invasive Species Council of B.C. at 1-888-933-3722, or submit information through its website.

Wednesday, October 07, 2020

Search underway for murder hornets nest in Washington state (Update)

by Nicholas K. Geranios
In this May 7, 2020, file photo, Washington State Department of Agriculture entomologist Chris Looney displays a dead Asian giant hornet, a sample brought in from Japan for research in Blaine, Wash. Washington state agriculture workers have trapped their first Asian giant hornet. The hornet was found July 14 in a bottle trap set north of Seattle near the Canadian border, and state entomologists confirmed its identity Wednesday, July 29, 2020. (AP Photo/Elaine Thompson, Pool, File)

Agricultural officials in Washington state said Friday they are trying to find and destroy a nest of Asian giant hornets—also known as murder hornets—amid concerns they could kill honey bees crucial for pollinating raspberry and blueberry crops.


Evidence of six of the hornets were found over the last week near the town of Blaine in Whatcom County, the Washington state Department of Agriculture told reporters.

The number of hornets found—nearly double the previous number discovered in the state—would indicate a nest has been established in the area, the agency said. One of the hornets was trapped alive, a first for the agency, spokeswoman Karla Salp said.

"We believe we are dealing with a nest,'' said Sven-Erik Spichiger, a department entomologist. "We hope to locate the nest in a couple of weeks and eradicate it."

The Asian giant hornet—the world's largest at 2 inches (5 centimeters)—can decimate entire hives of honeybees and deliver painful stings to humans. Farmers in the northwestern U.S. depend on those honey bees to pollinate many crops.

The invasive insect found in China, Japan, Thailand, South Korea, Vietnam and other Asian countries was first documented in Washington state late last year. Officials have said it's not known how it arrived. Washington and the Canadian province of British Columbia are the only places the hornets have been found in North America.
In this Sept. 30, 2020, photo provided by the Washington State Department of Agriculture, a researcher holds a live Asian giant hornet with a tracking device affixed to it near Blaine, Wash. Agricultural officials in Washington state said Friday they are trying to find and destroy a nest of Asian giant hornets believed to be near the small town amid concerns the hornets could kill honey bees crucial for pollinating raspberry and blueberry crops. (Karla Salp/Washington State Department of Agriculture via AP)

There have been reports from Asia of the hornets stinging people so often they have died.

Despite their name, the hornets kill at most a few dozen people a year in Asia, and experts say it is probably far less. Hornets, wasps and bees typically found in the United States kill an average of 62 people a year, the Centers for Disease Control and Prevention has said.

The real threat from the hornets is their devastating attacks on honeybee hives, and the time of year when they attack those hives is nearing, Spichiger said. He called it the "slaughter phase."

A state scientist managed to trap one live Asian giant hornet near Blaine in recent days and officials tried to glue a radio tag to it so they could follow the hornet back to its nest, Spichiger said.

But the glue did not dry fast enough, the radio tag fell off and the hornet ultimately could not fly, Spichiger said. Scientists hope to capture another live hornet and try again.

In this Sept. 30, 2020, photo provided by the Washington State Department of Agriculture, a researcher holds a live Asian giant hornet with a tracking device affixed to it near Blaine, Wash. Agricultural officials in Washington state said Friday, Oct. 2, 2020 they are trying to find and destroy a nest of Asian giant hornets believed to be near the small town amid concerns the hornets could kill honey bees crucial for pollinating raspberry and blueberry crops. (Karla Salp/Washington State Department of Agriculture via AP)
In this Sept. 30, 2020, photo provided by the Washington State Department of Agriculture, a researcher works to attach a tracking device to a live Asian giant hornet near Blaine, Wash. Agricultural officials in Washington state said Friday, Oct 2, 2020 they are trying to find and destroy a nest of Asian giant hornets believed to be near the small town amid concerns the hornets could kill honey bees crucial for pollinating raspberry and blueberry crops. (Karla Salp/Washington State Department of Agriculture via AP)
In this Sept. 30, 2020, photo provided by the Washington State Department of Agriculture, a live Asian giant hornet flutters but is unable to fly away as a tracking device placed by a researcher dangles behind near Blaine, Wash. Agricultural officials in Washington state said Friday, Oct. 2, 2020 they are trying to find and destroy a nest of Asian giant hornets believed to be near the small town amid concerns the hornets could kill honey bees crucial for pollinating raspberry and blueberry crops. (Karla Salp/Washington State Department of Agriculture via AP)
In this Sept. 30, 2020, photo provided by the Washington State Department of Agriculture, a researcher holds a live Asian giant hornet with a tracking device affixed to it near Blaine, Wash. Agricultural officials in Washington state said Friday, Oct. 2, 2020 they are trying to find and destroy a nest of Asian giant hornets believed to be near the small town amid concerns the hornets could kill honey bees crucial for pollinating raspberry and blueberry crops. (Karla Salp/Washington State Department of Agriculture via AP)
In this Sept. 30, 2020, photo provided by the Washington State Department of Agriculture, a researcher works to attach a tracking device to a live Asian giant hornet near Blaine, Wash. Agricultural officials in Washington state said Friday, Oct 2, 2020 they are trying to find and destroy a nest of Asian giant hornets believed to be near the small town amid concerns the hornets could kill honey bees crucial for pollinating raspberry and blueberry crops. (Karla Salp/Washington State Department of Agriculture via AP)


People living in the Blaine area have been reporting sightings of the hornets to agricultural officials.

There is also evidence that the giant hornets are also attacking native wasps and hornets, Spichiger said.

Fifteen of the hornets have been found since they were first seen in the state in 2019, the agriculture department said.


Explore further Another Asian giant hornet found in northwestern Washington

© 2020 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed without permission.

Wednesday, August 16, 2023

Invasive yellow-legged hornet spotted in continental U.S. for first time

Simrin Singh
Updated Wed, August 16, 2023

A new invasive species has been spotted in the U.S. for the first time. A living yellow-legged hornet, also known as an Asian hornet, was detected in Georgia, which state officials say could cause damage to its agricultural industry if left uncontrolled.

The Georgia Department of Agriculture said Tuesday the discovery has the potential to threaten honey production and native pollinators.

Earlier this month, a Georgian beekeeper discovered and reported the insect to the state. The yellow-legged hornet's identity was then confirmed by the U.S. Department of Agriculture's Animal and Plant Health Inspection Service.

An Asian hornet (Vespa velutina) flies on Sept. 14, 2019, in Loue, France. / Credit: JEAN-FRANCOIS MONIER/AFP via Getty Images

"Georgians play an important role helping GDA identify unwanted, non-native pests, and I want to thank the beekeeper who reported his sighting to us," said Georgia Agriculture Commissioner Tyler Harper in a statement. "Our experienced team of professionals will continue to assess the situation and are working directly with USDA APHIS and UGA to trap, track, and eradicate the yellow-legged hornet in Georgia. "

The next step for officials will be to set up traps to find out if there are more of these pests in the area. If they are able to find a colony, it will be destroyed, Georgia agriculture officials said. The hornet that has already been identified will be DNA tested so that scientists can determine whether the insect originated from Europe of Asia.

The yellow-legged hornet, which is identified as a social wasp species, is native to tropical and subtropical areas of Southeast Asia, and is also established in much of Europe, parts of the Middle East, and parts of Asia where it is not native.

The insect builds egg-shaped nests, often in trees, and can host up to 6,000 worker hornets.

The press release emphasized how important public reports of the insect will be in its eradication efforts. The GDA encourages people to take photos of any insects they believe to be yellow-legged hornets and file a report here. However, it is important to exercise caution around the hornets as they can be dangerous, the department said.

In 2019, a relative of the yellow-legged hornet — the "murder hornet," or Asian giant hornet — caused alarm after being found in Washington state. The invasive insects, which are now called northern giant hornets, were feared also because of their ability to rapidly kill domestic honeybee and hornet species. Washington state eradicated a giant nest of nearly 1,500 murder hornets in 2021.

Wednesday, February 05, 2020


The specimen of Vespa velutina collected in Hamburg, dorsal view. Credit: Mr. Martin Husemann
In early September 2019, an Asian hornet (Vespa velutina nigrithorax) was collected alive in Hamburg, Germany, representing the northernmost find of the species so far in Europe and indicating its further spread to the north. The paper by the research group from Hamburg, which also serves to update the occurrence of the dangerous invader, was published in the open access journal Evolutionary Systematics.
Known to prey on many insects, including honey bees and other beneficiary , the Asian , which had already invaded parts of Southern and Central Europe, is a potential threat to apiculture and even to ecosystems.
The first specimen was captured in south-western France in 2005 and started to spread quickly. Over the next years, it invaded large parts of France and regions of Spain, Portugal, Belgium, Italy, the Netherlands, Great Britain and south-western parts of Germany. The invasion speed for France has been estimated at around 78 km/year, but in reality, the species spread might be occurring much faster due to anthropogenic factors.
It's not yet clear if the collected Asian hornet belonged to an already settled population or it's rather the first record of a new invasion. Nevertheless, considering the fast invasion speed of the species and its relatively high climatic tolerance, it's quite possible that it had reached Hamburg on natural routes and now reproduces there.
Even though other models suggest that the Hamburg area is not suitable for the species today, the new find might be a sign that the Asian hornet has begun spreading at a speed above that previously known and even in climatically less favourable regions.
  • Faster than a speeding bullet: Asian hornet invasion spreads to Northern Germany
    The specimen of Vespa velutina collected in Hamburg, frontal view. Credit: Mr. Martin Husemann
  • Faster than a speeding bullet: Asian hornet invasion spreads to Northern Germany
    The specimen of Vespa velutina collected in Hamburg, lateral view. Credit: Mr. Martin Husemann
  • Faster than a speeding bullet: Asian hornet invasion spreads to Northern Germany
    The specimen of Vespa velutina collected in Hamburg, frontal view. Credit: Mr. Martin Husemann
  • Faster than a speeding bullet: Asian hornet invasion spreads to Northern Germany
    The specimen of Vespa velutina collected in Hamburg, lateral view. Credit: Mr. Martin Husemann
"Therefore, the current find needs to be taken seriously, no matter if it is only a single specimen or a member of an established population", shares the lead researcher Martin Husemann from Centrum für Naturkunde, University of Hamburg.
Invasive species are one of the great challenges in the modern world. Their occurrence can be considered as one of the key important ecological and evolutionary drivers.
Asian hornet to colonize UK within two decades without action

More information: Martin Husemann et al, The northernmost record of the Asian hornet Vespa velutina nigrithorax (Hymenoptera, Vespidae), Evolutionary Systematics (2020). DOI: 10.3897/evolsyst.4.4735


Friday, April 21, 2023

Newly sequenced hornet genomes could help explain invasion success

Peer-Reviewed Publication

UNIVERSITY COLLEGE LONDON

The genomes of two hornet species, the European hornet and the Asian hornet (or yellow-legged hornet) have been sequenced for the first time by a team led by UCL (University College London) scientists.

By comparing these decoded genomes with that of the giant northern hornet, which has recently been sequenced by another team, the researchers have revealed clues suggesting why hornets have been so successful as invasive species across the globe.

Hornets are the largest of the social wasps; they play important ecological roles as top predators of other insects. In their native regions, they are natural pest controllers, helping regulate the populations of insects such as flies, beetles, caterpillars and other types of wasps. These services are critical for healthy, functional ecosystems, as well as for agriculture.

But hornets also tend to be very successful as invasive species. They can become established in areas they are not native to and cause potentially huge ecological and economic damage by hunting important pollinators, such as honeybees, wild bees and hoverflies.

To better understand how these species have so successfully expanded their ranges, the international team of scientists investigated the genomes of three types of hornets.

A genome sequence is the set of instructions – a genetic code – that makes a species. Comparing the genomes of different species can give insights into their biology – their behaviour, evolution, and how they interact with the environment.

The researchers have newly sequenced the genomes of the native European hornet, Vespa crabro – an important top predator, which is protected in parts of Europe – and the invasive yellow-legged Asian hornet Vespa velutina, which has become established through much of Europe over the last 20 years threatening native ecosystems, and has occasionally been sighted in the UK. They compared these with the genome of the giant northern hornet, Vespa mandarinia – a species known for its role as pest controller, pollinator and food provider in its native Asian range, but is a recent arrival in North America, where it may threaten native fauna.

By analysing differences between the three related species, the researchers were able to identify genes that have been rapidly evolving since the species differentiated themselves from other wasps and from one another, and found some noteworthy genes that are rapidly evolving, particularly relating to communication and olfaction (smell).

The study’s first author, Dr Emeline Favreau (UCL Centre for Biodiversity & Environment), said: “We were excited to find evidence of rapid genome evolution in these hornet genomes, compared to other social insects. Lots of genes have been duplicated or mutated; these included genes that are likely to be involved in communication and in sensing the environment.”

Genome evolution allows organisms to adapt to their environment and make the most of their surroundings by developing new behaviours and physiology.

Co-author Dr Alessandro Cini, who began the work at UCL before moving to the University of Pisa, said: “These findings are exciting, as they may help explain why hornets have been so successful in establishing new populations in non-native regions.

“Hornets are carried to different parts of the world accidentally by humans. All that is needed is a small number of mated queens to be transported, hidden in cargo perhaps. The genomes suggest that hornets have lots of genes involved in detecting and responding to chemical cues – these may make them especially good at adapting to hunt different types of prey in non-native regions.”

Senior author Professor Seirian Sumner (UCL Centre for Biodiversity & Environment) said: “These hornet genomes are just the beginning. The genomes of more than 3,000 insect species have now been sequenced by efforts around the world, but wasps are under-represented among these.

“Genomes tell us about aspects of the ecology and evolution that other methods cannot. Evolution has equipped these insects with an incredible genetic toolbox with which to exploit their environment and hunt their prey.”

Armed with these new genomes, the scientists hope to help improve the management of hornet populations, both for their ecosystem services as pest controllers in native zones, and as ecological threats in regions where they are invasive.

The study involved researchers in the UK, Italy, Spain, Israel, France, New Zealand, and Austria, and was primarily funded by the Natural Environment Research Council.