logo
Meet the murder hornet's Canadian cousin

Meet the murder hornet's Canadian cousin

Yahoo3 days ago
'Murder hornets' have been making a buzz in the media for years for their immense size and deadly behaviour. Also called the northern giant hornet (formerly the Asian giant hornet), these terrifying insects were first detected in Canada in 2019, near Nanaimo, B.C.
This invasive species poses a huge threat to Canada's ecosystems, as they are known to quickly destroy entire bee colonies, which are essential in maintaining healthy ecosystems.
RELATED:
Each summer, people across Canada will report murder hornet sightings. However, experts are quick to clarify that the sightings people commonly report are actually European hornets—a species that was introduced to North America over 160 years ago and has become part of Canada's natural ecosystem. While they were introduced, this does not make them invasive as they have naturally integrated with the environment and are not harmful.
Both insect species belong to the family Vespa, but there are some big differences between the two.
Murder hornets, formally called northern giant hornets, are invasive to Canada and pose a major risk to native bee colonies and our ecosystems. (Yasunori Koide/Wikimedia Commons) CC-BY-SA 4.0
European hornets versus murder hornets
European hornets are found in Eastern Canada and can look scarily similar to the murder hornet. They are much larger than the yellowjackets that we are used to seeing each summer but are actually a lot smaller than murder hornets. They have a similar striped pattern on their abdomens to murder hornets, but the key difference is that their abdomens are yellow, whereas the murder hornets are more yellow-orange.
SEE ALSO:
Unlike murder hornets, European hornets don't pose a threat to other native insect species and ecosystems. While they do sometimes eat bees, they don't destroy entire colonies and can actually provide bees protection from other predatory insects, such as wax moths.
European hornets can be found in Canada and are often mistaken for the murder hornet (northern giant hornet). (Dr. Guido Bohne/iNaturalist) CC-BY-SA 4.0
European hornets also create paper nests similar to those made by paper wasps and yellowjackets. Conversely, murder hornets build their nests underground around tree roots.
Like any other stinging insect, the European hornet can get aggressive when you invade its territory or grab at it, but they otherwise try to avoid interacting with people. They do have a soft spot for sweet fruits, though, and you may see more of them buzz around you in the late summer and early fall as their natural food sources begin to dwindle.
Despite their scary appearance, European hornets are important for our ecosystems, providing natural pest control and pollination services.
If you believe you have spotted a murder hornet in Canada and are able to take a photo as proof, you can report it to the Invasive Species Centre.
Thumbnail image credit to Judy Gallagher/iNaturalist CC-BY-SA 4.0
Orange background

Try Our AI Features

Explore what Daily8 AI can do for you:

Comments

No comments yet...

Related Articles

First-Ever Look at Exploding Molecules Reveals Their Quantum Secrets
First-Ever Look at Exploding Molecules Reveals Their Quantum Secrets

Gizmodo

time2 days ago

  • Gizmodo

First-Ever Look at Exploding Molecules Reveals Their Quantum Secrets

In the quantum world, molecules are always on the move. And for the first time ever, scientists have directly captured these tiny quantum dances in action—and they did so by blowing them up real good. Even at absolute zero, individual particles constantly vibrate without a fixed position, a phenomenon referred to as zero-point motion. In a paper published August 7 in Science, researchers at European XFEL harnessed this behavior for the 2-iodopyridine molecule, which consists of 11 atoms. By blasting the molecule with powerful, short bursts of X-ray pulses, the team created a 'microscopic big bang' that allowed them to track, reconstruct, and therefore visualize the molecule's quantum fluctuations. 'We were able to see that the atoms don't just vibrate individually, but that they vibrate in a coupled manner, following fixed patterns,' study senior author Till Jahnke said in a statement. Jahnke, a physicist at the Institute for Nuclear Physics at Goethe University Frankfurt in Germany, added that iodopyridine 'features a whole repertoire of 27 different vibrational modes,' a fascinating quantum behavior that cannot be explained classically. The team used a technique called Coulomb Explosion Imaging, which zaps molecules with X-rays to knock out swathes of electrons from the target molecule. This makes the molecule positively charged overall, causing the atom parts to repel each other and eventually fly apart. A special instrument quickly recorded the shape and motion of each fragment from the explosion, which lasted less than a femtosecond (a quadrillionth of a second). Based on the records, the researchers modeled the explosion to 'visualize' the motion of the molecule, confirming that it aligned with the correlated zero-point motion they were hoping to observe. Other than bringing us a tangible representation of the quantum world, the new results represent the 'fingerprints' of the atoms' quantum behavior. Using this technique to study similar phenomena for other molecules could open entirely new avenues for physicists to investigate individual molecules with unprecedented precision, the researchers state. 'In the future, this technique could be used to study even larger molecules, and time-resolved movies of their internal motions are now possible,' said Michael Meyer, study co-author and a scientist at the Hamburg Centre for Ultrafast Imaging in Germany, in an XFEL statement. 'Our goal is to go beyond the dance of atoms and observe in addition the dance of electrons—a choreography that is significantly faster and also influenced by atomic motion,' said Jahnke. 'With our apparatus, we can gradually create real short films of molecular processes—something that was once unimaginable.'

Meet the murder hornet's Canadian cousin
Meet the murder hornet's Canadian cousin

Yahoo

time3 days ago

  • Yahoo

Meet the murder hornet's Canadian cousin

'Murder hornets' have been making a buzz in the media for years for their immense size and deadly behaviour. Also called the northern giant hornet (formerly the Asian giant hornet), these terrifying insects were first detected in Canada in 2019, near Nanaimo, B.C. This invasive species poses a huge threat to Canada's ecosystems, as they are known to quickly destroy entire bee colonies, which are essential in maintaining healthy ecosystems. RELATED: Each summer, people across Canada will report murder hornet sightings. However, experts are quick to clarify that the sightings people commonly report are actually European hornets—a species that was introduced to North America over 160 years ago and has become part of Canada's natural ecosystem. While they were introduced, this does not make them invasive as they have naturally integrated with the environment and are not harmful. Both insect species belong to the family Vespa, but there are some big differences between the two. Murder hornets, formally called northern giant hornets, are invasive to Canada and pose a major risk to native bee colonies and our ecosystems. (Yasunori Koide/Wikimedia Commons) CC-BY-SA 4.0 European hornets versus murder hornets European hornets are found in Eastern Canada and can look scarily similar to the murder hornet. They are much larger than the yellowjackets that we are used to seeing each summer but are actually a lot smaller than murder hornets. They have a similar striped pattern on their abdomens to murder hornets, but the key difference is that their abdomens are yellow, whereas the murder hornets are more yellow-orange. SEE ALSO: Unlike murder hornets, European hornets don't pose a threat to other native insect species and ecosystems. While they do sometimes eat bees, they don't destroy entire colonies and can actually provide bees protection from other predatory insects, such as wax moths. European hornets can be found in Canada and are often mistaken for the murder hornet (northern giant hornet). (Dr. Guido Bohne/iNaturalist) CC-BY-SA 4.0 European hornets also create paper nests similar to those made by paper wasps and yellowjackets. Conversely, murder hornets build their nests underground around tree roots. Like any other stinging insect, the European hornet can get aggressive when you invade its territory or grab at it, but they otherwise try to avoid interacting with people. They do have a soft spot for sweet fruits, though, and you may see more of them buzz around you in the late summer and early fall as their natural food sources begin to dwindle. Despite their scary appearance, European hornets are important for our ecosystems, providing natural pest control and pollination services. If you believe you have spotted a murder hornet in Canada and are able to take a photo as proof, you can report it to the Invasive Species Centre. Thumbnail image credit to Judy Gallagher/iNaturalist CC-BY-SA 4.0

These tarantulas may have evolved huge genitalia to fend off bloodthirsty females
These tarantulas may have evolved huge genitalia to fend off bloodthirsty females

National Geographic

time3 days ago

  • National Geographic

These tarantulas may have evolved huge genitalia to fend off bloodthirsty females

Researchers have uncovered a new tarantula genus called Satyrex where males may have evolved longer sex organs to avoid getting eaten by fierce females. A female from the species Satyrex ferox is pictured above. Photograph By Premysl Fabianek When scientists discover a new species, they usually name it after the creature's most notable characteristic. So why did a group of scientists recently name a newly discovered genus of tarantulas after satyrs, the famously well-endowed half-goat men from Greek mythology? Like a satyr, the new species have massive members that dwarf those of all other tarantulas, scientists explain in a study published last month in the journal ZooKeys. Females in this genus are extremely aggressive, so scientists speculate that their males evolved ginormous genitals to keep a safer distance during mating. 'New species are found quite regularly, but finding large-sized spiders with such bold behavior and such unique features, that doesn't happen every day,' says Alireza Zamani, an arachnologist at the University of Turku in Finland and co-author of the new find. 'There's a lot that we don't know about our planet.' Female tarantulas (Satyrex somalicus pictured) are known to eat males after sex. Photograph By Premysl Fabianek Chowing down on their mates may give females (Satyrex arabicus pictured) an energy boost to raise a clutch of eggs. Photograph By Mohssin Fageeh Last year, Zamani was poring over old records of tarantula sightings when he noticed something strange. The scientific record, the citizen science platform iNaturalist, and even social media sites were all teeming with reports of tarantulas with massive sex organs in the Arabian Peninsula and the Horn of Africa. Tarantulas, like all spiders, don't have penises; they have palps. Located near the spider's mouth, palps are leg-like appendages that are used for everything from mating to feeding. Males have structures on their palps known as palpal bulbs. The bulbs look like boxing gloves and function like syringes. When it's time to mate, males deposit sperm onto one of their webs and then transfer it to their papal bulbs. Once they have a female in their grasp, they will insert one of their palps into the female's genital opening and deposit their sperm. While palp size varies species to species, the palps that Zamani was seeing were unlike any he had seen before. He contacted researchers in Africa and the Middle East, and eventually got his hands on eight preserved specimens, their impressive palps intact, as well as photos and videos of them in the wild. By studying their structure and DNA, Zamani and his colleagues were able to determine that these tarantulas not only belonged to four new species but also comprised an entirely new genus. They dubbed this new genus Satyrex, which is a combination of Satyr and the Latin word rēx, meaning the spiders in this genus live underground and are 'highly defensive and highly aggressive,' Zamani says. The most aggressive of the bunch is Satyrex ferox. This spider, which is the largest in the genus, has palps that can reach a whopping five centimeters (nearly two inches), making them nearly as long as its longest legs. Their name comes from the Latin word for "fierce." According to Zamani, this spider will assume a defensive posture at the slightest disturbance, raising its front legs and rubbing them together to make a hissing sound. The tarantula tango The researchers speculate that male members of Satyrex may have evolved their huge palps to avoid getting attacked and eaten by females during sex. For many tarantulas, mating is a deadly duel. During such bouts, males strive to inseminate and escape, while females fight to make a meal of their would-be suitors. (See a rare video of tarantula mating.) In nearly all tarantulas, including the new Satyrex species, males have evolved hooks on their front legs that they use to lock the female's fangs in place during mating to stop her from biting them. While these little hooks work for most tarantulas, Zamani suspects they alone are unlikely to protect members of Satyrex from their feisty females. Having huge palps may help male Satyrex spiders maintain a safe(ish) distance from females during mating, he says. 'I think it's a fascinating hypothesis that is very testable,' says Chrissie Painting, a behavioral ecologist who studies mating systems at the University of Waikato in New Zealand. Painting, who was not involved with the study, says these spiders may be in the midst of an evolutionary arms race, with females evolving to become more aggressive in order to snag a snack that can sustain them in motherhood and males evolving better means of mating with them without getting eaten. While more research is needed to confirm this, Painting says, sexual cannibalism is a strong driver of evolution. In other spider species with sexual cannibalism, Painting points out, males have evolved the ability to transfer sperm extremely quickly to reduce their chances of getting eaten while getting it on. (Meet the tarantula named after Johnny Cash.) Having longer leg-like genitals may help male Satyrex tarantulas (Satyrex arabicus shown) keep a safe distance from feisty females during sex. Photograph By Mohssin Fageeh A broader web of spider diversity Zamani and his colleagues were surprised that the spiders they described in this study had gone undiscovered for so long. But our planet is home to over 1,000 species of tarantulas, and many have yet to be found. 'The reality is that the vast majority of Earth's biodiversity remains undocumented,' he says. When it comes to the range of weird spiders yet to be discovered, these tarantulas may just be the tip.

DOWNLOAD THE APP

Get Started Now: Download the App

Ready to dive into a world of global content with local flavor? Download Daily8 app today from your preferred app store and start exploring.
app-storeplay-store