Giant arthropods

Could other arthropods get as large as a coconut crab? Ants? Wasps? Spiders?

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  1. 3 weeks ago
    Anonymous

    Would

  2. 3 weeks ago
    Anonymous

    Nope because land hermit crabs (like the coconut crab) have special branchiostegal lungs for gas exchange which other arthropods do not. If they were to develop an efficient method of gas exchange then it could potentially be possible I suppose, but that would take a long time and heavily be up to chance.

  3. 3 weeks ago
    Anonymous

    Coconut crabs evolved a special breathing organ thats midway between gills and lungs, the chance for insects to develop this has long passed. But whatever I guess coconut crabs could radiate into other species if they survived a mass extinction. Thats actually a good idea for a seed world spec evo project.

    • 3 weeks ago
      Anonymous

      Nope because land hermit crabs (like the coconut crab) have special branchiostegal lungs for gas exchange which other arthropods do not. If they were to develop an efficient method of gas exchange then it could potentially be possible I suppose, but that would take a long time and heavily be up to chance.

      What about arachnids? They have book lungs, and the largest arthropods ever like

      https://i.imgur.com/mAqD6rK.jpeg

      Anomalocaris is overrated, it was downscaled to 30 to 50 centimeters (max size) in length, it wasn't 1 meter long like previously thought. It was only the strongest during the Cambrian period. Eurypterids are the real kings of the arthropods, the largest could grow over 2 meters.

      said used book gills which are the same structure but adapted for water instead of air, so they have got to be at least somewhat efficient right?

      • 3 weeks ago
        Anonymous

        they would still need a way for active respiration, those branchiostegal lungs are still working through pssive diffusion
        and arachnids are extremely different arthropods, like you as a real human bean are more related to certain fishes than every arthopod group is related to each other, the evolutionary distance is extremely vast since these groups were started before fishes existed

  4. 3 weeks ago
    Anonymous

    The strongest of today vs the strongest in history

    • 3 weeks ago
      Anonymous

      Anomalocaris is overrated, it was downscaled to 30 to 50 centimeters (max size) in length, it wasn't 1 meter long like previously thought. It was only the strongest during the Cambrian period. Eurypterids are the real kings of the arthropods, the largest could grow over 2 meters.

      • 3 weeks ago
        Anonymous

        Could these things thrive today?

        • 2 weeks ago
          Anonymous

          Probably not, they'd just get fricked up by sharks

      • 3 weeks ago
        Anonymous

        biggest =/= strongest
        a nimble amonalocaris might well be able to out maneuver the sluggish jaekelopterus

        • 3 weeks ago
          Anonymous
    • 3 weeks ago
      Anonymous

      WAKE ME UP

  5. 3 weeks ago
    Anonymous

    Reckon these guys are very cool

  6. 3 weeks ago
    Anonymous

    the first problem they have to conquer is the ability to breath, passive respiration from air holes isnt good enough at large sizes, the second problem is exoskeletons also not scaling well, and the last problem is birds

    • 3 weeks ago
      Anonymous

      >evolves book lungs
      >exo gets thinner
      your move theist.

      • 3 weeks ago
        Anonymous

        book lungs are still not active respiration, and a weaker exoskeleton only leaves them more vulnerable to birds, we used to have eagle sized dragonflies but theyre gone because they were easy targets for birds

        • 3 weeks ago
          Anonymous

          >a weaker exoskeleton only leaves them more vulnerable to bi-ACK

          • 3 weeks ago
            Anonymous

            Gem

        • 3 weeks ago
          Anonymous

          No, giffinflies went away because of less oxygen and pterosaurs, not birds.

          https://i.imgur.com/DMkmi6s.jpeg

          >a weaker exoskeleton only leaves them more vulnerable to bi-ACK

          >takes the strongest insect to kill the weakest bird
          This isn't the own you think it is man.

          • 3 weeks ago
            Anonymous

            >NOOO MRS BRISBY SAVE ME

            • 3 weeks ago
              Anonymous
              • 3 weeks ago
                Anonymous

                Imagine how shrekt she'd be if they were real

          • 3 weeks ago
            Anonymous

            >strongest insect
            I wouldn’t say that at all

            https://i.imgur.com/Kldxd8O.jpeg

            Lmao

    • 3 weeks ago
      Anonymous

      >fpbp

      https://i.imgur.com/YTZL9tw.jpeg

      Could other arthropods get as large as a coconut crab? Ants? Wasps? Spiders?

      There are theoretical size limits, such as fpbp points out. In the past, you could see dragonfly reach 1 meter in body length and 2 or more meters in wingspan. Fossils of them have been found in coal. These are likely at the upper limits set by respiration, but also other conditions on Earth such as gravity, atmospheric density & composition, etc. Back then oxygen content was higher, and slightly higher atmospheric pressure, so insectoids could be larger. Today, less oxygen, they are smaller ... they hit respiratory limits differently depending on that and other factors.

      • 3 weeks ago
        Anonymous

        What about book lungs tho?

        • 2 weeks ago
          Anonymous

          What about them?

      • 2 weeks ago
        Anonymous

        >2 or more meters in wingspan
        More like 70 centimeters in wingspan for the largest species of meganeurids, still impressive.

    • 2 weeks ago
      Anonymous

      To be fair, once a coconut crab gets big enough, it will hunt and eat birds

      • 2 weeks ago
        Anonymous

        What? Have we seen this?

        • 2 weeks ago
          Anonymous

          Google it. Besides that, there's the theory that Amelia Earhart's corpse was eaten by coconut crabs after crashing in an island

          • 2 weeks ago
            Anonymous

            I’m familiar with that but I don’t what proof there is behind it beyond ‘le coco crabby eat a lot’

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