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Plants Can Turn Caterpillars Into Cannibals To Avoid Getting Eaten (nationalgeographic.com.au)

An anonymous reader quotes a report from National Geographic: A new study published in the Nature Ecology and Evolution journal found that when some plants are under attack from hungry herbivores, they emit defenses that make themselves incredibly foul-tasting to caterpillars, which spurs the caterpillars to eat each other. "Plants can defend themselves so much that they food-stress the herbivore, and then the herbivores determine that rather than have plants on their menu, they should have caterpillars at the top of their menu," said John Orrock, the author of the study and a researcher in the Department of Zoology at the University of Wisconsin, Madison. Orrock and his research team sprayed tomato plants with methyl jasmonate -- a substance plants produce in response to environmental stresses -- to trigger the plants' defense mechanisms. This chemical allowed the plant to change its chemistry, which made it less appetizing to the beet armyworm caterpillars that were placed on a treated plant. This phenomenon has been documented in a variety of plants, and research has suggested that plants can sense when surrounding plants are under attack, which can spur the production of methyl jasmonate in entire communities of plants.

56 comments

  1. Cool trick! by Anonymous Coward · · Score: 4, Interesting

    That's the same the rich do with the poor: convince them that they are, somehow richer than others, thus turning them against each other (instead of eating the -- far more nutritional! rich).

    Humans are idiots (myself included, mind you).

    1. Re:Cool trick! by Kokuyo · · Score: 1

      Well, more accurately, humans are still animals with all that entails.

    2. Re:Cool trick! by jellomizer · · Score: 5, Insightful

      No the flood TV and Radio channels that shows how the other guy is so bad.
      For example. If a small group is against something that a lot of people like, they will twist it to make it seem like a much larger group in which this small group is a subset of.

      So all conservatives are racist. And all liberals are atheists. All the rich and powerful are republicans. All the whining protesters are Democrats.

      It creates an us vs them mantality, exaggerating the difference between people, where the difference isn't so great.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    3. Re:Cool trick! by Anonymous Coward · · Score: 0

      > humans are still animals

      Ya, sure, but animals with iPhones and SUVs and Facebook and Twitter, and that makes us particularly disgusting animals.

    4. Re:Cool trick! by Anonymous Coward · · Score: 0

      Well, more accurately, humans are still animals with all that entails.

      Well, strictly speaking they are omnivores, while the summary was about herbivores.

    5. Re:Cool trick! by Anonymous Coward · · Score: 0

      Don't worry, I'm sure researchers are fervently working to see how they can turn this into an effective defense against the Putin's puppet regime and the Wall Street cronies he's filling the swamp with.

      Fuck, at this point anything helps.

    6. Re:Cool trick! by parkinglot777 · · Score: 2

      No the flood TV and Radio channels that shows how the other guy is so bad.

      Not really nowadays. There is a better medium than just TV and radio -- Internet. Social network can accelerate anything much faster and has better impact on people especially younger generations. However, media, such as TV, radio, and Internet are simply tools and should not be blamed on. So could you please stop blaming media as a whole but rather point out specific person/group when anything like this happen? Simply making a generalization is misleading and actually make things worse.

    7. Re:Cool trick! by Oswald+McWeany · · Score: 2

      Well, more accurately, humans are still animals with all that entails.

      I'd be a cannibal if humans came bite sized and covered in chocolate.

      --
      "That's the way to do it" - Punch
    8. Re:Cool trick! by Anonymous Coward · · Score: 0

      Your last sentence I can agree with.

    9. Re:Cool trick! by DNS-and-BIND · · Score: 2, Insightful

      Conservatives who voted for Trump are either 100% behind his bigotry, or they are 100% okay with it; there is no effective difference between the two. Apathy is just as dangerous as active hatred.

      Yes, actually, if Hillary had said something so blatantly abusive, had run on a platform of racism, sexism, Islamaphobia, classism, ableism, and basically further disenfranchisement for anyone who isn't a white Christian straight cisgender male - yes, I'd feel exactly the same way about her and anyone who voted for her (and probably be looking for a bridge to jump off, if both of our candidates were so uniformly awful). Because it doesn't matter who does it, it's equally as crappy. It's not about championing a particular issue, it's about not championing the administration who literally wants to institute policies that will kill people.

      It hit me so hard because no matter how much I gave dire warnings to the people who handwaved Trump's chances away, I never truly expected him to win. I never, ever, in my heart of hearts, believed that so many people in my country believed in his racist, sexist, ableist, vile rhetoric.

      The US is much more racist and backward than we ever thought.

      --
      Shutting down free speech with violence isn't fighting fascism. It IS fascism!
    10. Re:Cool trick! by DontBeAMoran · · Score: 1

      That explains the furry fandom.

      --
      #DeleteFacebook
    11. Re:Cool trick! by Anonymous Coward · · Score: 0

      It hit me so hard because no matter how much I gave dire warnings to the people who handwaved Trump's chances away, I never truly expected him to win. I never, ever, in my heart of hearts, believed that so many people in my country believed in his racist, sexist, ableist, vile rhetoric.

      Was there any point during the last few months, after it was shown that your predicted future didn't materialize, that you asked yourself the question: If I got this so wrong, is it possible that I'm wrong on other aspects of my assessment of the current political situation?

      I, for one, am 100% okay with president Trump's "bigotry", because he isn't a bigot. At least, not any more of a bigot than the next person.

    12. Re:Cool trick! by mysidia · · Score: 1

      That's the same the rich do with the poor: convince them that they are, somehow richer than others

      Well, if you are in the US, then you are rich, because basically anyone in the US can get the 3 basic needs met (Water, Food, and Shelter), and almost everyone can access conveniences and comforts such as Telephone-based communications, Automotive vehicular transportation, Running-water based Showers and Toilets, Comfortable beds, and some form of Entertainment. Most of the poor are separated by physical barriers such as the high seas, or international boundaries, at the very least.

    13. Re:Cool trick! by jellomizer · · Score: 2

      Many of the votes for Trump, were more votes against Clinton. They are not 100% okay with the bigotry, but that problem seems like less of an issue then the issues they saw in Clinton.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    14. Re:Cool trick! by Anonymous Coward · · Score: 0

      Or came from people that live somewhere where they effectively don't have a voice anyway. Neither campaign so much as set foot in my state past the primary, because the electoral outcome was a forgone conclusion to begin with.

    15. Re: Cool trick! by Anonymous Coward · · Score: 0

      Look, I've found slashdot's resident vorarephile! Do you ever have fantasies about putting a mini BeauHD inside of you and just letting him hang out for a while?

    16. Re:Cool trick! by HornWumpus · · Score: 1

      That was the perfect chance to actually vote FOR SOMEONE.

      I choose Vermin, but Libertarian was also a viable choice. Even the green Candidate, dumb ass that she is, was a better choice, given the totality of the situation.

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    17. Re:Cool trick! by Anonymous Coward · · Score: 0

      Backward? Compared to what? Have you been to anywhere else in the world that isn't the west? Good luck trying to wrap your head around how 'non-racist' everyone is (they are incredibly racist). But hey, whatever, believe whatever you want.

    18. Re:Cool trick! by slick7 · · Score: 1

      Television and not so smartphones turn people into hive-mindless ants. Turn the damn shit off, and go outside and play.

      --
      The mind conceives, the body achieves, the spirit manifests.
    19. Re:Cool trick! by n329619 · · Score: 1

      humans came bite sized

      In that case, your mouth would have to match your human body, because that's how you'll get a bit sized human. Kind of like Pac-man.

  2. Vegans by Anonymous Coward · · Score: 0

    Does this explain why vegans are pro-choice?

  3. Damn by Anonymous Coward · · Score: 0

    I thought it said cannabis.

    1. Re:Damn by skids · · Score: 1

      I thought a previous comment said "Humans are all just animals with all that entrails.

      I got up too early today.

      Anyway apparently maple trees aren't one of the ones who can do this... judging from the gypsy-moth-ravaged one near my friends house.

    2. Re: Damn by Anonymous Coward · · Score: 0

      Probably better than banana peels

    3. Re:Damn by Lost+Penguin · · Score: 1

      So, use it on spider mites?

      --
      I am the unwilling control for my Origin.
  4. Does this mean by Big+Hairy+Ian · · Score: 1

    When the last of them finally come out of their cocoons they will be Vampire Butterflies?

    --

    Build a Man a Fire, and He'll Be Warm for a Day. Set a Man on Fire, and He'll Be Warm for the Rest of His Life.

  5. soooo by Anonymous Coward · · Score: 0

    spray this crap on your neighbors and

    ZOMBIE APOKALYPSE without zombies?

    coooool

  6. New Study my fuzzy caterpillar a$$... by Anonymous Coward · · Score: 1

    A new study on an old topic. The topic of this jasmine compound to mess around with insect digestive habits - has been known since 2009 at the very least as per the website noted in the summary and has likely been known prior before its commercialization.

    "Article" doesn't mention any breakthrough discovery. The team sprayed the compound on tomato plants, caterpillars acted as predicted. Just media hyper sensationalism.

    REGURGITATED INFORMATION FOR YOU FOR YOUR EVERY DESIRE. Who cares if it's accurate, old, repeated or rehashed somehow. Get your info here and now!

    1. Re:New Study my fuzzy caterpillar a$$... by GrumpySteen · · Score: 4, Insightful

      Studies build on earlier studies. That's how science progresses. The induced cannibalism in the caterpillars is the new discovery in this case.

      If you weren't in such a hurry to dismiss the article as unworthy, you might have noticed your link doesn't mention anything about induced cannibalism.

    2. Re:New Study my fuzzy caterpillar a$$... by Ian+A.+Shill · · Score: 1

      It's not news until someone calls it news. Then it is.

      --
      For hire.
  7. "The Happening" movie reference by Anonymous Coward · · Score: 1

    Interesting...the movie "The Happening" had a story of plants turning against humans. Is this proof that this could happen in real life?

    1. Re:"The Happening" movie reference by amalcolm · · Score: 2

      The day of the Triffids got there first, I think. https://en.wikipedia.org/wiki/.... 1951. Film came later

      --
      Time for bed, said Zebedee - boing
    2. Re:"The Happening" movie reference by Lord+Kano · · Score: 1

      I only entered this story to comment about The Happening.

      LK

      --
      "Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
    3. Re:"The Happening" movie reference by Lord+Kano · · Score: 1

      Day Of The Triffids did go there first but The Happening is much more inline with this.

      Plants communicating with chemical signals and then developing defense mechanisms to change the behavior of their predators, in that case humans.

      LK

      --
      "Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
  8. Cabbages too by Dutch+Gun · · Score: 4, Interesting

    My understanding is that cabbages can also sense when they're under attack. They emit a chemical signal that attracts wasps, who then feast on the herbivore invaders. Pretty cool, evolutionary warfare. It's led to some extraordinary adaptations in nature's brutal eat or be eaten battle arena.

    --
    Irony: Agile development has too much intertia to be abandoned now.
    1. Re:Cabbages too by Sumus+Semper+Una · · Score: 2

      The most interesting thing I found about the cabbage/wasp/butterfly link was this:

      Certain kinds of butterflies landing on part of a cabbage (or yellow mustard - a cabbage relative) for some time can trigger the plant to release a chemical that makes the butterfly less likely to lay its eggs. Parasitic wasps are very sensitive to butterfly pheromones (for obvious reasons, since they lay their eggs alongside the caterpillar eggs). The chemical released by cabbage family plants against butterflies also attracts parasitic wasps.

      I wonder if the pheromones and the plant's chemical defense are closely related. The wasps certainly seem to be sensitive to both. And to the wasp it's probably as simple as "this smell means a good place to lay my eggs for my young to feed and thrive."

  9. . . . and here I wackyparsed that title, as . . . by PolygamousRanchKid+ · · Score: 3, Funny

    "Plants Can Turn Caterpillars Into Cannabis To Avoid Getting Eaten!"

    . . . but, being that I'm watching a story on the news where folks who got caught tossing Molotov cocktails just got released because they have sympathizers in the Hamburg government . . . everything seems a wee bit surreal today.

    --
    Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
  10. Well that explains it by Anonymous Coward · · Score: 0

    Did someone place some of those plants around the White House and GOP HQ?

  11. Re:. . . and here I wackyparsed that title, as . . by Anonymous Coward · · Score: 0

    Hey, you're not alone. Just came here to see if anyone else had read Cannabis too :)

  12. Re:. . . and here I wackyparsed that title, as . . by Oswald+McWeany · · Score: 2

    "Plants Can Turn Caterpillars Into Cannabis To Avoid Getting Eaten!".

    Man! I got some wacked out caterpillar brownies you need to try.

    --
    "That's the way to do it" - Punch
  13. Monsanto patent in... by Anonymous Coward · · Score: 0

    3..2..1..
    Research money well spend!

  14. Re:. . . and here I wackyparsed that title, as . . by DNS-and-BIND · · Score: 1

    You're going to say something like that with no link? Come on, man.

    --
    Shutting down free speech with violence isn't fighting fascism. It IS fascism!
  15. Cut off my legs and call me shorty! by Anonymous Coward · · Score: 0

    Cannibal caterpillars? Well aint that something!

  16. Meh, TV channels can do worse by 140Mandak262Jamuna · · Score: 1

    Without releasing chemicals the TV news channels seem to be on the verge of turning human beings into cannibals.

    --
    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
  17. Old news for M. Night Shyamalan by Anonymous Coward · · Score: 0

    This was documented in his film "The Happening".

  18. Commas! by Anonymous Coward · · Score: 0

    "the herbivores determine that rather than have plants on their menu, they should have caterpillars at the top of their menu"

    I had to read this twice to get the meaning. It would have been clearer had they added one more comma to set off the interrupting phrase, like so:

    "the herbivores determine that, rather than have plants on their menu, they should have caterpillars at the top of their menu"

    Commas are your friends!

  19. Bad News! by Ol+Olsoc · · Score: 1
    For vegans.

    As this shows, plants to not want to be eaten. This makes it immoral for you to choose to eat them in the same way it is immoral for you to eat an animal.

    Actually, it fits in with my philosophy that all life is precious, and deciding that one form of life is acceptable to eat and one form is not acceptable is making a moral choice that is bigoted.

    We're here, we're omnivorous, and unless we are on a starvation fast, we need to eat.

    I can hardly wait until my next encounter with a vegan that wants to do omnivore shaming.

    --
    The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    1. Re:Bad News! by Anonymous Coward · · Score: 0

      Thank you. Well said!

      It disturbs me when "vegan" fools won't feed their infants milk, eggs, or other animal protein. This is a critical period in child development and poor nutrition at this stage can have lifelong consequences: lower IQ, health issues of every stripe, arrested growth and development. But if the mother ate like a kook during the infant's gestation then the damage is probably already done.

      And in normal English "vegan" should rightly be pronounced 'vehj uhn' but I guess there is no end to how "special" "vegans" want to be. I suppose they wish to be perceived as some alien lifeform from Star Trek.

    2. Re:Bad News! by Anonymous Coward · · Score: 0

      I think it mainly relates to the fact that animals look cute, have faces and are easily relateable. We can project ourselves onto them with relative ease. It's much easier to tell when animals are suffering and wow that can tug on the heart strings much more easily than some kind of plant suffering.

      I'm all for not discriminating against living things when it comes to what's for dinner. But some people are, and as long as they aren't forcing anyone else to believe as they do, they can go right ahead. I'll eat what I want and respect that it gave its life for the benefit of mine.

  20. A little overdramatic by Sumus+Semper+Una · · Score: 4, Informative

    While it is cool that plants have defense mechanisms against herbivores, the claim that the plants are "turning caterpillars into cannibals" is a bit of a stretch. Caterpillars are already cannibalistic in a pinch. All the plant does is make itself taste bad. If I only have meat and vegetables in my refrigerator and all the meat spoils first, then my choice to eat vegetables does not imply that meat's tendency to spoil faster turns me into a vegetarian.

  21. Zombies by Anonymous Coward · · Score: 0

    So are the caterpillars turned into zombies? Sort of like in 'The Girl With All the Gifts'?

  22. Weaponized? by Anonymous Coward · · Score: 0

    Can this somehow be used as a type of insecticide? Or will it affect the food negatively?

  23. And so it begins... by SkyLeach · · Score: 3, Funny

    Our real enemy will be the humble potato and in one fell swoop everyone with a hankering for french fries or potato chips will become a zombie.

    --
    My $0.02 will always be worth more than your â0.02, so :-p
  24. Monsanto by Anonymous Coward · · Score: 0

    ...you can hear them running to the patent office..

  25. Cannible Herbivores by Anonymous Coward · · Score: 0

    You sure about that?

  26. Daes it do the same to us? by Anonymous Coward · · Score: 0

    Is that why we eat so many animals?