Scientists have found a way to 'tattoo' tardigrades

(phys.org)

53 points | by PaulHoule 2 days ago ago

46 comments

  • seeknotfind a day ago ago

    > this technique could be suitable for printing micro-electronics or sensors onto living tissue.

    I was thinking we could use tattoos to identify tardigrades, like how they tag animals for research purposes, but this is next level.

  • musicale a day ago ago

    Great, in a few years those tardigrades will be asking the same scientists about laser removal.

    • microtherion 19 hours ago ago

      Luckily for them, this is a Chinese research team. An US based team doing this would get the tardigrades deported because the tattoo allegedly said "MS-13".

      • Y_Y 15 hours ago ago

        This is a funny joke, but I wish there was a rule about introducing the theme of contemporary US politics/culture wars in threads where they are not already present. It seems to serve as high-vcass flamebait.

        (I know there is already a rule about metaposting to complain about rules, please consider this well-intentioned civil disobedience.)

        • maxbond 13 hours ago ago

          > I wish there was a rule about introducing the theme of contemporary US politics/culture wars in threads where they are not already present.

          This falls under "eschew flamebait" and "avoid generic tangents," no? (I also chuckled for whatever it's worth.)

          • SpaceL10n 12 hours ago ago

            It certainly doesn't add anything of substance to content in the article.

            • MisterTea 11 hours ago ago

              I find humor to be a welcome breath of fresh air in a room full of stale hot air. I reject the view that this forum has to be a dry meeting of the minds.

  • kaonwarb a day ago ago

    Impressive... and more research needed:

    > About 40% of the tardigrades survived the procedure

    Still impressive!

    • protocolture 16 hours ago ago

      "New Laser kills 60% of Tardigrades" wasn't as snappy for the paper headline.

      • snvzz 16 hours ago ago

        Tardigrades are quite durable otherwise.

        • SoleilAbsolu 3 hours ago ago

          Yes, durable enough to power FTL starships in the future!

        • dekhn 11 hours ago ago

          only in their dried-out state. Under regular conditions, they are easily squished.

          • stavros 6 hours ago ago

            OK, how? All the photos I've seen of them are taken with SEMs, implying that you can't squish them any more than you can squish an amoeba.

            • dekhn 4 hours ago ago

              I work with live tardigrades under a microscope and you could easily squish them with a little metal pick, or by pressing on the glass coverslip.

              Tardigrades are very different from amoeba. They have a well-defined cuticle exoskeleton surrounding a liquid space, about 1000 cells, while an amoeba is single cell and highly deformable.

              • stavros 4 hours ago ago

                Ahh, I thought you meant with your fingers or something, that makes sense.

                • dekhn 3 hours ago ago

                  I suspect if you really tried to deposit a pile of tardigrades on your finger and squeezed really tight you could probably damage them with the ridges of your fingerprints. I don't know enough about the biophysics of finger pressure and how the surfaces interact, and I wouldn't really want to do this (feels cruel, even if they have very limited nervous systems).

    • cjbgkagh 21 hours ago ago

      It’s a bit less impressive considering they are tardigrades and can survive almost anything.

      Though I guess tattooing a hardy animal is more difficult.

      • mrbungie 20 hours ago ago

        It's a bit more impressive when you consider the size of these buddies.

        • cjbgkagh 13 hours ago ago

          That’s what made it impressive in the first plane.

  • davidw 11 hours ago ago

    I want a Far Side cartoon depicting this.

    • PaulHoule 11 hours ago ago

      ... I think there will be a lot of competition for the Ig Nobels this year.

  • butlike 10 hours ago ago

    > 40% survived the procedure.

    And it's a long way from 'survived' to 'prospered'. Are we sure this is the most humane thing to do?

    • BugsJustFindMe 9 hours ago ago

      I don't think society is at a place where asking whether something is the most humane towards tardigrades makes sense to most people.

      • PaulHoule 9 hours ago ago

        Yeah, but somehow blasting tardigrades with an electron beam to write on them feels a little cruel to me.

  • alach11 12 hours ago ago

    I'm trying to think of practical use cases for this. Is surveillance one of them? Could you drop a bunch of these marked tardigrades on an object or on money and later identify it?

    Doesn't seem like a very efficient way to accomplish the goal, but it would make for a great plot line in a spy movie.

  • jancsika 10 hours ago ago

    Here's a fun thought-experiment: imagine that NASA began with the truism that tardigrades are the best fit candidates for astronauts[1]. They put all their effort and money into robotics and tech to support little tardigrade colonies on The Moon and Mars.

    Present day, this alternate universe has the same boring space tourism for humans that we have. But they also have a vibrant inter-planetary research program with robot-assisted colonies of tattooed tardigrades, doing all kinds of experiments, most of which are broadcast back home.

    And honestly, by the time we get tech to figure out how to terraform Mars, we'd probably also have the tech to make humans more tardigrade-like. So the tardigrade astronaut program (TAP for short) would provide an important body of knowledge for the necessary biological changes.

    Just seems like a better use of astronaut dollars all around[2].

    1: I mean, they come standard with little space suits! C'mon!

    Edit:

    2: And think of the savings: I just found the first batch of candidates for the TAP's Mercury project by picking up a wet leaf.

    • staplers 10 hours ago ago

        by the time we have the tech to figure out how to terraform Mars
      
      A billion year oxidization event that forms an atmosphere, creates water from nothing, and ignites the core of the planet triggering tectonic activity?

      The myth of humans "terraforming Mars" is so far from reality it makes me question the aptitude of anyone suggesting it.

      • betterThanTexas 10 hours ago ago

        Presumably it's at least worth considering if such a pessimistic attitude is warranted. Such a slow oxidation rate is certainly not warranted on a chemical process level. The trick is performing this chemical process 1.5 AU away.

        • staplers 10 hours ago ago

          Absolutely, don't mistake my cynicism for defeatism. I want it as badly as anyone else, but the chemical and thermodynamic makeup of Mars does not warrant optimism (given present knowledge).

          • PaulHoule 9 hours ago ago

            Bezos's vision is better than Musk's. This plan to gravitationally disrupt Ceres and turn 100% of it into habitat strictly dominates all other space colonization ideas in our solar system not least that it can provide more square feet of habitat than Earth does but probably not the 0.2 km^3 of ocean per person or the 0.7 million tons of atmosphere per person that we have, areas where Biosphere 2 fell tragically short. [1]

            https://arxiv.org/pdf/2011.07487

            [1] CO2 levels swung violently from day to night in Biosphere 2 because they didn't have enough atmosphere relative to plants and animals; Biosphere 2 probably shouldn't have tried to simulate oceans at all

  • b3lvedere 13 hours ago ago

    "After this first step, Zhao and Qiu hope that this work could enable advancements such as microbial cyborgs and other biomedical applications in the future."

    I'm not sure if i shoud be happy microbial cyborgs exist.

  • cloudking 15 hours ago ago

    How does one come up with such an idea in the first place?

    • Ekaros 13 hours ago ago

      Identifying tardigrades seems like obvious problem for this solution. You are doing experiments and want to track individuals overtime I don't think there is that many identifying features in them. So you need something.

    • Y_Y 15 hours ago ago

      It's an obvious progression from burning ants woth a magnifying glass

    • mhb 13 hours ago ago

      1. "We need some funding"

      2. "Hey, I got an idea!"

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  • chankstein38 11 hours ago ago

    Now we can finally prove we're not just seeing the same tardigrade everywhere! lol

  • ImHereToVote 19 hours ago ago

    Finally.

  • neilv 15 hours ago ago

    With all the recent existential threats to humankind, tardigrades have become an emerging market for fashionable luxury goods and services

  • zombot 15 hours ago ago

    How long until companies pay to have their logos painted on tardigrades' backs?

  • canadiantim 21 hours ago ago

    Tardigrades have always been punk

  • fdudjnr 16 hours ago ago

    [flagged]

  • Sirikon 17 hours ago ago

    Trump has found a way to accuse tardigrades of being gang members