• Flying Squid@lemmy.world
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    6 days ago

    Good. They deserve it. Octopuses are dicks. They keep demanding you to call “octopi.” Sure. When you start calling me and my homies squidi, I’ll start calling you guys octopi.

    But no, they can’t see past their octopus privilege. As if having two fewer arms made them superior.

    • Dasus@lemmy.world
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      5 days ago

      Octopi is the oldest plural form of octopus, coming from the belief that Latin origins should have Latin endings. However, octopus is not a simple Latin word, but a Latinized form of the Greek word októpus. Consequently, its “correct” plural form would logically be octopodes.

      Nowadays “octopodes” and octopuses" are both acceptable, the latter being more regularly used.

      “Squid” on the other hand isn’t Latin or Greek, of unknowns origin, probably from a sailor’s variant of “squirt”; late 15c., squirten, squyrten “to spit water from the mouth” (intransitive), a word of uncertain origin, perhaps via Middle Dutch or Middle Low German, probably ultimately imitative.

  • Mothra@mander.xyz
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    7 days ago

    According to the article the females don’t fare any better either.

    I didn’t know this about octopi, what’s the point, evolutionarily, to self destruct after reproducing?

    • JayDee@lemmy.world
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      6 days ago

      Not everything in evolution ends up having a point. So long as a problem does not impact the propagation of children it can end up moving forward to the next generation.

      I would guess that if there is an Evolutionary reason, it’s probably that octopi with this drive reproduced More than octopi that didn’t.

    • ✺roguetrick✺@lemmy.world
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      7 days ago

      Essentially their entire mating cycle is what causes this. They’ve got a gland behind the eye that puts them into mating mode and once it starts it never turns off until they overdose on sex hormone.

    • Contramuffin@lemmy.world
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      7 days ago

      There’s a specific life history strategy called semelparity, which is what you’re describing (breeding once then dying). To my understanding, this is incentivized if the chances of getting a second attempt to breed are too low, and so it becomes more evolutionarily advantageous to simply go all out on the first attempt

      • perestroika@lemm.ee
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        6 days ago

        A bit similar process in sea-dwelling salmons: migrating from salt water into fresh water (quite a big metabolic challenge in itself), traveling up rapids to suitable spawning places (often a long and arduous journey)… after they’ve accomplished that, their chances of returning alive are quite low. So they mostly die. But their close relatives, river-dwelling trouts spawn many times in life, because their migration isn’t as costly.

        I would suspect that something in how octopuses reproduce has an element of “return being costly” - it could be a metabolic return to the feeding and growing state instead of a physical return.

      • Mothra@mander.xyz
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        7 days ago

        Thanks, one solid answer! It could be that it used to be an advantage at some point and now it’s just perpetuated

        • ✺roguetrick✺@lemmy.world
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          7 days ago

          To be clear, it’s still an advantage and for the ones that it isn’t they don’t die after mating. Most cephalopods are both predators and prey that life cycle results in a very high mortality rate. If you don’t hunt enough, you fail and if you get eaten you fail. The deep cold water ones though, tend to have to live longer due to less prey and have fewer predators so they tend to not die after mating.

    • houstoneulers@lemmy.world
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      7 days ago

      I read that it’s so the parents don’t compete for resources with their young, helping to support the young’s survival

    • thefartographer@lemm.ee
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      7 days ago

      To prevent decrepit politicians who already had their chance from usurping the resources of the next generation and pulling up the ladder behind them?

      You know… Octopus politicians

    • Scott_of_the_Arctic@lemmy.world
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      7 days ago

      Reproduction is the goal. It could be as simple as giving the young a chance to out compete their r****ded parents for limited food.

    • MinFapper@startrek.website
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      7 days ago

      Evolution doesn’t care what happens to you after reproduction because you’ve already passed on your genes at that point

      • SkaveRat@discuss.tchncs.de
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        7 days ago

        I mean, yes, but if you’re not a vegetable afterwards, you will have more chances to reproduce. Therefore passing on your genes more

        • Transtronaut@lemmy.blahaj.zone
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          7 days ago

          Evolution doesn’t make deliberate, strategic choices. Random mutations result in new behaviors/properties that may or may not be beneficial, and selection removes those mutations that prevent reproduction from the gene pool. Not every mutation will be beneficial, but as long as it’s not harmful enough to stop reproduction, it can persist.

          If there were two groups of octopuses, one with the self-destructive behavior and one without, then there would be pressure from competition. In that situation, your point would have more of an impact. But without that pressure, there’s nothing to drive the selection. And the mutation won’t occur just because it would be helpful for it to do so - it’s random.

          At least, that’s how I understand it. I’m not a biologist or anything.

          • SkaveRat@discuss.tchncs.de
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            7 days ago

            yes, that’s the point I’m trying to reinforce. There has to be “a reason” that getting stupider after mating is a succesful trait, otherwise it wouldn’t be there.

            The question that was asked was: what is the reason? So far I’ve only seen speculation in this thread

            • Habahnow@sh.itjust.works
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              7 days ago

              There doesn’t have to be reason for it to help, all that matters is that there isnt a sufficient enough of am evolutionary hinderance to prevent reproduction. The octopi reproduced, so their traits pass on.

            • Krik@lemmy.dbzer0.com
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              7 days ago

              As was said before: The genes are already passed onto the next generation. It doesn’t matter if the parents become stupid now. There’s no evolutionary advantage to become more or less stupid at this point.

              It became like it is now by some random chance(s).

              • Mothra@mander.xyz
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                7 days ago

                SkaveRat is addressing my original question: I’m asking if there is an advantageous reason for this phenomenon. You seem to suggest it’s a spandrel at best, and fair enough, that could be the answer. It probably is a spandrel, I also believe that.

                However spandrels usually don’t reduce future chances or reproduction, and this one clearly does, so I was asking perhaps there is an advantage to this feature (not a spandrel then). Or at least an explanation for its existence from a genetic perspective, ie. the genes triggering the self destructing behavior are also the same ones responsible for a major survivability feature.

                The reason behind spandrels existing can sometimes be explained other than “random”, as it happens with the human chin for example - apparently someone figured out it’s physically impossible for a chin not to appear if you are deforming maxillary bones to flatten into a face.

                So far here nobody knows for sure about the octopus, and I gather it’s because science doesn’t yet have a consensus on the matter. But everyone has been quick to assure me it’s just random and that there isn’t anything else to it without any scientific backing.

                • Transtronaut@lemmy.blahaj.zone
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                  7 days ago

                  I suspect the responses you’re getting stem from the original phrasing:

                  what’s the point, evolutionarily, to self destruct after reproducing

                  The question has an implicit claim that there IS a point, which people are rightly pointing out is not necessarily the case (as you have acknowledged). It certainly is an interesting question to wonder if there could be some benefit anyway, so it would probably have helped to frame it that way.

                  Not saying anyone is required to meet any kind of bar in the level of discourse in a casual online forum, just an observation of cause and effect, for what it’s worth.

                • Krik@lemmy.dbzer0.com
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                  7 days ago

                  Tell that to all the animals that only have one shot. There are quite a lot of them and usually they all lay thousands of eggs.

                  Probably the most well known of them is the salmon. Only about 5% of them survive the procreation after the salmon run (of those salmon species that actually do the run).

        • The Quuuuuill@slrpnk.net
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          7 days ago

          yeah but octopi are intensely successful hunters. this may be either a mechanism that helps prevent resource scarcity, or it could prevent parent/offspring mating

    • cm0002@lemmy.world
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      7 days ago

      what’s the point, evolutionarily, to self destruct after reproducing?

      There is no point, evolution is about successful reproduction and everything else is just random chance.

      If a evolutionary tweak happens that gives your off spring better chances, but your arms fall off after sex then it’ll probably perpetuate.

      • KeenFlame@feddit.nu
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        6 days ago

        No that’s absolutely not true, every part of evolution happens for a reason and those we don’t know, we research until we find out why

        • JayDee@lemmy.world
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          6 days ago

          I think the point the other guy is pointing out, is that good and bad evolutionary traits are often connected - or more helpfully stated, evolutionary traits can have both benefits and drawbacks which don’t immediately seem related to the same trait.

          It’s quite possible that octopi sex dementia is just a drawback to another trait which is very beneficial, so the dementia was just a bad aspect of a good trait that propagated forward. This happens all the time in different animal biologies.

            • stray@pawb.social
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              6 days ago

              Everything about biology is a random effect. Even a mutation that’s selected for wasn’t planned; it just happened by chance. Like if you’re an aquatic species maybe you’ll end up being a strong swimmer over generations, but the water doesn’t pressure you towards that on its own. You have to coincidentally develop flukes that make you a stronger swimmer before those traits can be selected for.

              Sometimes traits that get passed down aren’t beneficial at all because they don’t make an impact on reproduction. Think of an animal that comes in many colors like a house cat or certain fish species. In such cases it’s clear that the color of the animal doesn’t have any bearing on its ability to reproduce, so a variety of colors are passed down for no particular reason.

            • JayDee@lemmy.world
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              6 days ago

              That is not how your comment reads. It reads like you think every trait exists as an advantage and propagates because it is a benefit. Plenty of traits propagate as side effects, which is how their comment read to me.

              • KeenFlame@feddit.nu
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                2 days ago

                Not really, and I think it’s because any unnecessary trait is an extra cost. But you can have your belief or even think we were magiced by an all powerful entity

      • x4740N@lemm.ee
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        7 days ago

        Wouldn’t it make them easier to he hunted by prey or just die from not being careful

        People with dementia can end up getting themselves fatally injured so I don’t see an octopus can’t

        So I don’t see how it’s beneficial to help them survive

        • helpImTrappedOnline@lemmy.world
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          6 days ago

          It’s not but, the evolutionary goal is compete.

          There’s no way for the octopus to pick a mate with out the side effect, so the lack of post-nut clarity continues through the generations.

      • serenissi@lemmy.world
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        7 days ago

        everything else is just random chance.

        nope, then you’d see some of same species showing the behaviour, others not.

        • activ8r@sh.itjust.works
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          7 days ago

          Sorry I’m really struggling to parse what you are saying here 😄 my fault.
          Can you explain further?

          • Demdaru@lemmy.world
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            7 days ago

            To my understanding:

            nope, then you’d see some of same species showing the behaviour, others not.

            Nope, then you’d see some animals of the same species showing the new behaviour while other animals, still of the same species, would not.

            Also my comment: We absoluteky see this, just on small scale tho. :|

        • GBU_28@lemm.ee
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          7 days ago

          But that’s just moving the goalpost, so to speak. You’ve just built a different parenting framework that requires you to stick around. You’re still hunting the same goal: self sufficient offspring

          (Not negging you)

          • RedditRefugee69@lemmynsfw.com
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            7 days ago

            True, I’m just being pedantic and pointing out that “reproduce and that’s it” isn’t the case for some species.

            Some species carry it on to “reproduce and ensure your offspring reproduces too.”