The behavioural cue of ‘flexible self-protection’ is a way to establish whether an animal feels pain, scientists say

Crickets that received the hot probe “overwhelmingly” directed their attention to the affected antenna – they groomed it more frequently, and tended to it over a longer period of time, he says. “They weren’t just agitated and flustered. They were directing their attention to the actual antennae that was hit with this hot probe.”

Link to the paper

  • stupidcasey@lemmy.world
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    26 days ago

    Also the fact that bug’s are silently going extinct and nobody cares to notice, seriously stick your head out the window right now and listen, that is a silent apocalypse my friend.

      • paranoia@feddit.dk
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        25 days ago

        For what it’s worth, my totally non scientific personal experience is that in Denmark, the number of insects that I have to clean off the car has trended upwards in the last two years

    • Shindo66@lemmy.world
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      25 days ago

      I could make aong crazy post about this. This is bad. I wanted to be an entomologist my whole childhood and i consider myself an amateur one. There are no bugs. Where there should be ants and earthworms, there are none. After a rain worms should be all over the place, the castings should be found everywhere. I keep looking and they are not there. I went to at least 20 lakes last summer in my canoe fishing with my kid and looked for aquatic insects. There are none. So there are so small fish. So there are no big fish. I just went all over florida just last week, i saw a couple of butterflies. No mosquitos, no ants, no spiders, no anything. Every year my building is really close to lake erie and gets covered in insects in the spring, havent seen a single one. I keep looking and haven’t found anything.

      • sparkyshocks@lemmy.zip
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        25 days ago

        I remember road trips in the summer, in the 90’s, where you’d just see a bunch of bugs splatter on your windshield, and where you’d have to periodically scrub them off with windshield scrubbers.

        Now, 25+ years later, I almost never see bugs on bumpers and hoods and side mirrors. Certainly not to the same degree.

        And I can believe that computer aided design helped make all cars much more aerodynamic so that fewer bugs would actually be hit and more would slip into the airflow around the car, but the sheer magnitude of the dropoff makes it totally obvious that there are just fewer insects around.

      • Jumi@lemmy.world
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        25 days ago

        When I was a child my dad’s garden was full of all kinds of butterflies. Then the ownership of the field on the other side of road changed and almost from one day to the other they were all gone and never returned.

    • knexcar@lemmy.world
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      25 days ago

      I wish some bugs would go extinct, bed bugs, mosquitos, ticks, maybe yellow jackets. Seems like those populations are strong than ever.

    • SunshineJogger@feddit.org
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      25 days ago

      Yes. It’s one of the most likely apocalypse scenarios.

      Here’s to hope enough manage to evolve fast enough to adapt to the human poisoning of the word. Because that’s the only viable path I can see. That humans manage to change fast enough is highly unlikely

  • Areldyb@lemmy.world
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    25 days ago

    Gotta join the chorus here. I’m not sure why anyone’s surprised to find that something with functioning neurons can feel pain. Wild guess, because I’m not a neuroscientist, but that’s gotta be one of the very first things they were ever responsible for conveying, right? “Ouch, don’t” has pretty universal utility.

    • Adulated_Aspersion@lemmy.world
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      24 days ago

      Has there been a consensus somewhere that insects (in the animalia kingdom along with fish, birds, reptiles, mammals (humans), etc) do NOT feel pain? I thought everyone knew that intrinsically.

  • Sanctus@anarchist.nexus
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    27 days ago

    Pain is probably one of the original sensations. I doubt you could find any creature on Earth that doesn’t feel it. It is extremely useful for staying alive. I bet we will find out plants even feel some form of pain if we haven’t already.

    • P00ptart@lemmy.world
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      26 days ago

      There’s been several studies that say they might, but nothing entirely conclusive. Some say that the smell of freshly cut grass might be the grass screaming in pain and warning the rest.

      • Pommes_für_dein_Balg@feddit.org
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        26 days ago

        It’s not to warn the rest, it’s even way cooler.
        The smell is supposed to attract carnivores, and tell them “Hey there’s some tasty herbivores over here” so they take care of the problem.

        Supposedly that’s why we like the smell of freshly mown grass, too.

      • Sanctus@anarchist.nexus
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        26 days ago

        On the contrary I’ve seen one where one cell passes straight through another cell, making a hole. The cell that was passed through did not react at all and kept about its business afterwards, even regaining shape. Wild.

    • inari@piefed.zip
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      27 days ago

      For plants it wouldn’t make much sense since they can’t really run away or otherwise stop the pain

      • Ephera@lemmy.ml
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        27 days ago

        Also worth saying that for animals, when someone nibbles off your arm, that’s a serious injury which can strongly affect your survival chances. For plants, that’s just a regular workday.

        Kind of been my hardest lesson in keeping houseplants, too. Seemingly most plants need to be nibbled on (or ya know, get cut back), otherwise they will try to grow towards the sky and hurt themselves in the process.

        I’ve killed two basil plants, because you look away for one second and they just grow half a meter tall. To support the weight, they become woody at the base. And eventually, they can’t sustain the leaves at the top anymore, but when you cut them down to the woody part, they can’t grow leaves on that anymore, so RIP… 🫠

        • Whats_your_reasoning@lemmy.world
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          26 days ago

          because you look away for one second and they just grow half a meter tall.

          Were they bolting? Bolting occurs when the plant is getting ready to flower, usually in response to high temperatures.

          If you see your basil plant beginning to bolt, give it a trim. Otherwise it’ll turn bitter. The link provided has more information about when and how to trim it to keep bolting under wraps.

      • anomnom@sh.itjust.works
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        25 days ago

        There are heat sensitive ones that curl up.

        It might reduce surface area or help survive overheating.

    • Cethin@lemmy.zip
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      26 days ago

      It depends on how you define “creature” and “pain”. There’s surely some single cell life that doesn’t. Are those creatures? Also, for plants, there’s growing evidence that many do release chemicals when hurt, which other plants and animals react to. Is that pain? I’d answer yes to both of those, but both are not hard definitions. They can be argued either way.

  • Shrouded0603@feddit.org
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    26 days ago

    Im Sorry you can downvote me for this but i absolutely fucking hate Most insects and dont want them near me. Ion think we Need to use chemicals but I might kill a bug or two if it bothers me too much

    • dunestorm@lemmy.world
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      26 days ago

      Yeah same, I don’t give a shit if they are beneficial in whatever way. If they’re in or on my property I kill them, I don’t want them building nests and multiplying in my home. The ONLY exception are bees, if I see a bee I will help it escape.

  • Mothra@mander.xyz
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    27 days ago

    I seriously don’t understand people’s assumption that insects don’t feel pain, or people who think bug spray is a painless option to kill. Seeing the bugs squirm for half an hour should probably clue you in. Personally it’s my last resort.

    • MonkderVierte@lemmy.zip
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      26 days ago

      Neurotoxins make them squirm but also woozy. I think this is a ok way to go.

      Though only for vampire flies and gnats, in a closed room.
      Wasps you can shoo away with a spray bottle and lavendel oil or another oil they hate, there are lists of plants online.

  • southsamurai@sh.itjust.works
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    27 days ago

    Well, since catch and release for insects is failboat, and managing an infestation of anything is a health hazard, bug spray ain’t going anywhere, pain or not

    • Slowy@lemmy.world
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      27 days ago

      Like mice, you can acknowledge something feels pain and still need to deal with pest type problems related to it (ideally in a targeted and humane manner). But it may affect some other things for the better such as mandatory killing of crustaceans before boiling, acceptable procedures for invertebrate animal research, eliminating use of live insects for fishing bait, etc.

    • teslekova@sh.itjust.works
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      26 days ago

      We could modify what’s in the spray to reduce the pain while the bugs die. Animal welfare is still quite relevant when you have to kill them.

  • floofloof@lemmy.ca
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    27 days ago

    Over the many decades I’ve been alive, there have been regular articles saying “scientists discover that such-and-such an animal may feel pain.” And then its forgotten and people continue to treat animals terribly, until a couple of years later a similar article comes out. I can’t see where the thought would even come from in the first place that these animals wouldn’t feel pain, except for religious dogma and a desire to continue abusing animals while telling yourself it’s OK. There’s no reason to even suspect most animals aren’t feeling pain.

      • Amnesigenic@lemmy.ml
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        25 days ago

        Why should anyone assume you can feel pain without evidence? You’re not gonna like how the evidence is collected

    • athatet@lemmy.zip
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      25 days ago

      Back in the day they didn’t even think human babies felt pain. Also heaven forbid if you are black and/or a woman.

    • Hawk@lemmy.dbzer0.com
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      26 days ago

      Meh, pain is just an indicator. Of course animals feel pain.

      For some reason people automatically associate that with how we as humans experience pain and learn from it.

      It’s not because my car is showing a “check engine” light, that’s it’s suddenly screaming in agony. It’s just signaling to the “brain” something is wrong. How the approach then continues is clearly different between many species and this is what researchers are trying to learn.

      Saying animals feel pain is obvious, speaking of “abuse” less so when you stop comparing the “experience” of pain to how we feel it.

      • Solumbran@lemmy.world
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        26 days ago

        Wow, impressive gymnastics you’re doing here to try to make it ok to abuse animals.

        Sure, let’s just assume that it’s fine and continue, I mean it’s not like it just keeps on being proven wrong.

        What is your point exactly? What good does it bring, to try to find ways to justify something that is likely harmful? What good does it bring you, to assume that animals that feel pain probably don’t suffer still, other than just to delude yourself into thinking that it’s ok for you to inflict pain to them?

        • Hawk@lemmy.dbzer0.com
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          26 days ago

          I’m not a scientist, I’m sure there’s a clear ethical code doing these experiments.

          Instead choosing to stay blind is a dumb choice. How can we improve animal welfare by being blind.

          Research like this can improve the circumstances and decisions we need to make regarding pain. Blindly assuming can often do more harm than good.

          Instead of pointing fingers, try to reflect and think about it. I can easily point out several cases where your assumptions do harm.

          • Lumidaub@feddit.org
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            26 days ago

            Please elaborate: You can point out cases where the assumption that something can feel pain causes harm?

          • Solumbran@lemmy.world
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            26 days ago

            How can it do harm, to assume that other living beings might be suffering? What kind of situation could ever be worse, by just being a bit less self-centered?

          • Lumidaub@feddit.org
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            26 days ago

            Wait, sorry, you’re arguing in favour of the research, not in favour of harming other beings because you think they don’t feel pain. Bit confusing.

    • HubertManne@piefed.social
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      26 days ago

      It and things like it go back forever. I had grad school teachers that say animals don’t think. Obviously they do and its not just monkeys and birds and dolphins. Now the thought processes get more basic as you go down but its all there. dreams and such.

    • Solumbran@lemmy.world
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      26 days ago

      Nature invented diseases that would kill you by the time you’re 30 and yet I don’t see you running naked outside to go die. Nature has never been something to follow, and especially not morally.

  • finallymadeanaccount@lemmy.world
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    26 days ago

    “Hey, Bill! Look! Look at this cricket when I stick its antenna with the hot probe! Look! See what it does? Look, I’ll do it again. Doesn’t like it, does it? I’ll just check it again. Nope! Wow! That reaction was a doozy! Hey, go get Eileen! She’d wanna see this, too! Hey, buddy! Here comes the hot probe … !”

    • Tinks@lemmy.world
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      25 days ago

      Agreed. Went backpacking with my dog last weekend, who is on Simparica AND was treated with permethrin 2 weeks prior, and that little shit STILL ended up with 3-4 dozen ticks on him. He’s a golden, so meticulously going through his fur removing them was a long annoying process for both of us. Thankfully they were all dead because of the insecticides. There is zero chance I’m not using bug sprays. Ticks are out in full force and I have zero sympathy for them. With as many diseases as they carry, it’s a me or them scenario, and it’s not going to be me.

  • H Ramus@piefed.social
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    26 days ago

    “Feel” is something that requires consciousness and a sense of awareness that the pain being experienced is self-related. Consciousness requires complex systems and a nervous system which insects do not possess. Whilst reactive and reflexive actions are performed, whether they experience pain as a personal subjective phenomenon is something that isn’t tested. Reaction isn’t a proxy to consciousness.

    Would a bacteria “feel” pain because it reacts to the environment?

    I say this as someone that has almost a Buddhist approach to respecting living creatures. However, the science of consciousness and a physicalist approach inform my views.

      • H Ramus@piefed.social
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        26 days ago

        Trying to bring the difference between nocioception, experience of pain and having a subjective experience of pain. Different physical and emotional phenomena.

        Does a crab look like it’s feeling pain when it yanks one of its claws out? Mostly seems unphased and it has a far more complex biology than an insect.

        • Amnesigenic@lemmy.ml
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          25 days ago

          You don’t have a fucking clue what you’re talking about in regard to crabs or anything else

    • Lumidaub@feddit.org
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      26 days ago

      Does it matter whether pain is felt “as a personal subjective phenomenon”? It’s still pain. Maybe I’m unclear on what exactly that phrase means.

      • H Ramus@piefed.social
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        26 days ago

        For example, when under anesthesia and having skin pricked without being made aware/conscious that the skin has been damaged and the body is working to restore it. This would be viewed as “feeling” pain as the body adjusts and focuses resources in addressing it. However, the experience of pain was not possible due to lack of awareness impeding a conscious representation of reality.

        • Lumidaub@feddit.org
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          26 days ago

          Doesn’t anaesthesia mean that the pain signal that would be transmitted via nerves to the brain is suppressed? I don’t see how that could be viewed as feeling pain.

          • H Ramus@piefed.social
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            26 days ago

            Yes, exactly my point. How can an insect feel pain when they’re devoid of the complex machinery that allows them to have pain emotion and connect the pain experience to a self.

            I took more issue with the use of “feel” as that’s normally associated with a human experience of feeling. An insect lacks “hardware” to approximate a human experience of feeling.

  • Victor@lemmy.world
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    26 days ago

    Dude what is this news? Of COURSE insects feel pain? A child can see this clearly, as I did when I was a young’un. They twitch and scurry when injured or burned. Don’t ask. Anyway.

    Why would they be different from animals and FISH that was apparently news as well, that they feel pain and anxiety when caught and killed. Oh and crayfish and lobster when boiled alive 😂😂😂 why wouldn’t they feel pain? It just seems so stupid to me to assume they wouldn’t.

    Here I thought we already knew this and did it anyway because… We gotta eat, right? Animals kill and eat barely-even-dead prey all the time, it’s just nature, right??

    But I grew up and learned humans don’t think other animals feel pain whatsoever. Like bruh wuuuut??? Whatchu think was going on?!

    • Soulg@ani.social
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      26 days ago

      I don’t know whether they do or not but they have very primitive nervous systems and just responding to bodily trauma or negative stimuli does not inherently imply feeling pain

      • Tiral@lemmy.world
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        26 days ago

        Hopefully an advanced race doesn’t put you in a room, break your shit, and say the same thing to each other.

      • Victor@lemmy.world
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        26 days ago

        But the fact that they do, just like we do, should be an indication of them feeling pain, so I don’t understand why people would assume the opposite. They have made every indication of feeling pain before we knew about nervous systems and all this modern stuff, so I really don’t get it.

        • backalleycoyote@lemmy.today
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          26 days ago

          They do but not like mammals do. Injury occurs, their nervous system responds, but their “brain” does not register it to the same degree it would in animals with more evolved brains. This video is a good example of the processing power of insect “brains”. The mantis is processing “eat” and the pain of being gnawed in half simply can’t over power the drive to eat. There’s not a mammal or bird that would ignore being chewed in half just because it was enjoying a succulent meal. Recognizing that different animals process pain in a way different from others is not license to disregard their pain or lessen the suffering, it’s just acknowledging that different systems process hurting in a different manner.

          https://youtube.com/shorts/-P9rlovvbjQ

          • Victor@lemmy.world
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            26 days ago

            Very interesting video, and also super gross, yuck.

            Makes me curious if all insects can be this oblivious in similar experiments.

        • Auli@lemmy.ca
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          26 days ago

          But they are literally not like us. They don’t have blood have exo skeletons.

      • Victor@lemmy.world
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        25 days ago

        I don’t know anything at all about sponges. Never held one, never seen a live one in nature.

        🤷‍♂️

        • Sprinks@lemmy.world
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          25 days ago

          Come to think about it, ive never seen one in nature either. Are sponges even real?

            • Sprinks@lemmy.world
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              25 days ago

              well fuck. What other lies have they pushed on us? Is earth even flat? I bet its not even on a turtle back drifting through space. Im so lost and confused.

              • Victor@lemmy.world
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                25 days ago

                The turtles are real, just not holding up the earth. Saw that shit on that newly leaked cartoon Avatar The last Airbender movie. They’re there.

                • Sprinks@lemmy.world
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                  25 days ago

                  oh thank fuck. For a minute there i was starting to question my entire understanding of reality and the world as we know it. Whew Praise be to turtle.

    • Auli@lemmy.ca
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      26 days ago

      Now whose putting human emotions on a bug. They are not small humans and do not have the same emotions.

      • Victor@lemmy.world
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        26 days ago

        I’m not talking about emotions. Pain is not an emotion. Pain is a sensation.

    • FatVegan@leminal.space
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      26 days ago

      People claim fish don’t feel pain to feel better about torturing and eating them. So that is not ahocking at all to me

      • YawningNostalgia@thelemmy.club
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        26 days ago

        When I was in med school assisting in circumcisions (didn’t want to, had to) the doctor said that the baby screaming was not proof that he felt pain, and demonstrated it by poking the baby and showing that he cried as a response to that. Absolutely nonsensical for a supposedly intelligent person to say. The cry was vastly different from the circ and a poke. It was an excuse not to use local anesthesia or justify the whole process I guess.
        The funny part is that that when I was on OBGYN at a different hospital, and when I was at my home hospital on peds, the pediatricians did circumcisions. So I got twice as many circumcisions as my classmates. Some of them could have theoretically attended zero if their schedule was flipped and they were on peds at the OBGYN circumcising hospital and on OBGYN at the peds circumcising hospital. I can’t understand why someone would claim someone else doesn’t feel pain. I wish we had a machine that could make someone feel for a second what you feel so that it stops being minimized or disbelieved.

        • ChexMax@lemmy.world
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          25 days ago

          I mean no offense, but some Dr’s are wild. It’s not just babies who are faking pain, but also women and POC. My husband was given the same pain meds/schedule for a cut on his thumb that I was for childbirth with a second degree tear. He was given even better pain meds the time we went in for a “mystery pain” in his chest that they could find no evidence of.

          • PolarKraken@lemmy.dbzer0.com
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            25 days ago

            I know about this as a phenomena, but even with already knowing, the specific comparison stories are always so wtffff…. So sorry you/y’all experience that, it’s hot trash.