3 ms·

Bumblebees Are Hitting Back at Asian Hornets with New Combat Skills

32 points by mnming 3y ago

ggm 3y ago
If hornets eat nectar, does this not mean that they also function as pollinators? Also, wasps are horrid. Are Hornets better or worse? Since they're non-native this is still an invasive species, but it's not impossible they continue to perform roles which bees are now depended on, economically.
- derstander 3y ago
  > Also, wasps are horrid. Are Hornets better or worse? All hornets are wasps. But not every wasp is a hornet. https://en.wikipedia.org/wiki/Hornet https://en.wikipedia.org/wiki/Hornet
- erutuon 3y ago
  Drinking nectar doesn't necessarily mean pollinating, that is transferring pollen. The pollen has to stick to the insect's body and the insect has to visit another flower that is genetically compatible and the pollen has to get stuck to the stigma of that flower when the stigma is gooey and receptive. Some flowers can only be pollinated by insects of particular sizes or shapes because of the position of the pollen-producing (anthers) and pollen-accepting (stigma) structures, and some insects bypass pollen entirely by biting a hole in the base of a flower to drink the nectar, and some insects don't visit multiple flowers of the same species consistently enough to transfer pollen (honeybees for instance apparently) as efficiently as other insects (bumblebees). Most wasps (of which hornets are a subtype) are only interested in nectar, not pollen, and some flowers don't produce nectar so won't be visited by wasps. Most wasps have short tongues for their body size, so they can't access some flowers that bumblebees can (bumblebees have long tongues). Some bees (bumblebees or mining bees for instance, not honeybees) buzz their wings to extract pollen from particular flowers like blueberries and tomatoes, enabling them to be pollinated effectively, and wasps don't do that. So giant hornets can't do all pollinating that bees can do. However, in the upper Midwest the spotted bee balm (Monarda punctata) is pollinated by large wasps, so there might be other flowers in the area invaded by giant hornets that could be pollinated by them. Disclaimer: I'm an amateur, not a scientist with a degree.
  - erutuon 3y ago
    Whoops, the article is about the Asian hornet, not the giant hornet... but my comments still apply.
  - guenthert 3y ago
    I presume that's all true, but is that actually relevant? Aren't hornets much more rare than even bumblebees, not to speak of bees in general?
- pvaldes 3y ago
  > Are Hornets better or worse than wasps Asian hornets are much more efficient killing people. I think that this should count as worse. But the much more stoic European hornet has a special place in my little heart.
jncfhnb 3y ago
> scientists at University of Exeter witnessed 120 attacks that took the same course, with the bee triumphing each time. That’s shocking frankly. See also bees clumping around giant hornets and killing them by heat death.
andrewflnr 3y ago
"Hitting back" is a very generous interpretation of "don't get killed by the hornet (but don't kill the hornet either)". Not that I'm sad, it's great, but I think it was fair to hope for more based on the title. I also don't see evidence these are "new combat skills". Anyway, linked study with full text: https://www.nature.com/articles/s42003-023-05329-5 https://www.nature.com/articles/s42003-023-05329-5
shiroiuma 3y ago
We need to help the bees by providing them with advanced weaponry. In this case, the bees need a version of that device that was invented to burn the wings off mosquitoes using lasers targeted by a RasPi.

32 points by mnming 3y ago

ggm 3y ago

If hornets eat nectar, does this not mean that they also function as pollinators? Also, wasps are horrid. Are Hornets better or worse? Since they're non-native this is still an invasive species, but it's not impossible they continue to perform roles which bees are now depended on, economically.

derstander 3y ago
> Also, wasps are horrid. Are Hornets better or worse? All hornets are wasps. But not every wasp is a hornet. https://en.wikipedia.org/wiki/Hornet https://en.wikipedia.org/wiki/Hornet
erutuon 3y ago
Drinking nectar doesn't necessarily mean pollinating, that is transferring pollen. The pollen has to stick to the insect's body and the insect has to visit another flower that is genetically compatible and the pollen has to get stuck to the stigma of that flower when the stigma is gooey and receptive. Some flowers can only be pollinated by insects of particular sizes or shapes because of the position of the pollen-producing (anthers) and pollen-accepting (stigma) structures, and some insects bypass pollen entirely by biting a hole in the base of a flower to drink the nectar, and some insects don't visit multiple flowers of the same species consistently enough to transfer pollen (honeybees for instance apparently) as efficiently as other insects (bumblebees). Most wasps (of which hornets are a subtype) are only interested in nectar, not pollen, and some flowers don't produce nectar so won't be visited by wasps. Most wasps have short tongues for their body size, so they can't access some flowers that bumblebees can (bumblebees have long tongues). Some bees (bumblebees or mining bees for instance, not honeybees) buzz their wings to extract pollen from particular flowers like blueberries and tomatoes, enabling them to be pollinated effectively, and wasps don't do that. So giant hornets can't do all pollinating that bees can do. However, in the upper Midwest the spotted bee balm (Monarda punctata) is pollinated by large wasps, so there might be other flowers in the area invaded by giant hornets that could be pollinated by them. Disclaimer: I'm an amateur, not a scientist with a degree.
- erutuon 3y ago
  Whoops, the article is about the Asian hornet, not the giant hornet... but my comments still apply.
- guenthert 3y ago
  I presume that's all true, but is that actually relevant? Aren't hornets much more rare than even bumblebees, not to speak of bees in general?
pvaldes 3y ago
> Are Hornets better or worse than wasps Asian hornets are much more efficient killing people. I think that this should count as worse. But the much more stoic European hornet has a special place in my little heart.

jncfhnb 3y ago

> scientists at University of Exeter witnessed 120 attacks that took the same course, with the bee triumphing each time. That’s shocking frankly. See also bees clumping around giant hornets and killing them by heat death.

andrewflnr 3y ago

"Hitting back" is a very generous interpretation of "don't get killed by the hornet (but don't kill the hornet either)". Not that I'm sad, it's great, but I think it was fair to hope for more based on the title. I also don't see evidence these are "new combat skills". Anyway, linked study with full text: https://www.nature.com/articles/s42003-023-05329-5 https://www.nature.com/articles/s42003-023-05329-5

shiroiuma 3y ago

We need to help the bees by providing them with advanced weaponry. In this case, the bees need a version of that device that was invented to burn the wings off mosquitoes using lasers targeted by a RasPi.