Let's fight about it.

  • cilantrofellow [any]
    ·
    4 years ago

    I would argue they are more like coral. Whales move with their nets while spiders use passive collection.

    Spiders are mobile land coral fight me.

    • garbology [he/him]
      hexagon
      ·
      4 years ago

      Spiders are mobile land coral fight me.

      We found it, the only correct take.

  • Hoyt [he/him]
    ·
    4 years ago

    Ah, yes. Spiders webs filtering bugs out of bug-rich air. I think this is how most people think of how spider webs work.

  • emizeko [they/them]
    ·
    4 years ago

    if I rip open my furnace to consume the filter, am I filter-feeding?

    • garbology [he/him]
      hexagon
      ·
      4 years ago

      Common mistake, you have to feed yourself TO the furnace filter to filter-feed.

  • jack [he/him, comrade/them]
    ·
    4 years ago

    There's obvious similarities, but a lot of significant differences that I think put them in separate categories.

    • Webs are an external structure while balleen or other filter feeding mechanisms are part of the body

    • Filter feeding is an active process the animal engages in while the web is a passive trap the spider can come and go from

    • Filter feeding involves consuming the filtered food whole, while a webbed creature must be killed and eaten in parts

    There are other animals that I think are more similar in feeding mechanisms to spiders than filter feeders are. I'd look at ant lion larvae, which dig a sand pit trap and actively kill the creatures that fall inside of it.

    So ultimately, traps and filter feeding have a lot in common, but they are distinct processes with many different forms in themselves.

    • garbology [he/him]
      hexagon
      ·
      4 years ago

      Webs are an external structure

      See I think this is debatable, since spider silk and baleen keratin are both non-living extruded structures.

      Filter feeding is an active process

      Good point but, I think it's not ironclad, since immobile sponges and molluscs filter-feed by just pumping water through, and some jellyfish are totally passive, waiting for their tentrils to enmesh and propel victims to their mouths all by themselves.

      Filter feeding involves consuming the filtered food whole

      True for most other filter-feeders, but why should it be a requirement to filter-feed?

      • jack [he/him, comrade/them]
        ·
        4 years ago

        Balleen is literally inside a whale's mouth. Hell, your teeth are non-living extruded structures, but they're obviously still part of the body.

        Like you say, sponges and sedentary molluscs actively pump water through themselves. I would not class most jellyfish as filter feeders, but as passive hunters, which is again a separate category from either of these.

        Here's another way to think of it: filter feeders use a structure to parse through their given medium ([almost?] always water), either actively moving through the medium, moving that medium over/through their filter mechanism , or both. The primary thing they are interacting with is the medium itself. Spiders and ant lions and other analogous creatures are altering their surroundings to be conducive to hunting. They are essentially little environmental engineers.

    • garbology [he/him]
      hexagon
      ·
      4 years ago

      Baleen and Spider silk are both non-living structures extruded by the animal, while fishing trawlers probably counts as animal tool use, like monkeys and apes fishing for termites.

    • garbology [he/him]
      hexagon
      ·
      4 years ago

      they are always right

      Oh real shit? Quick ask them if communism will win

  • YourBestComrade [he/him,none/use name]
    ·
    4 years ago

    Ehhhh, in my mind no, since webs aren't really filtering per se, generally it's more like an idle trap that animals run into than the more traditional filter-feeding of whales and such. For example in the case of baleen whales, they're actively filtering/separating the food(fish, shrimp, krill, etc.) out of the water( later getting rid of the excess water and other things that may have been caught while filter-feeding). In the case of spider webs, they're not really "filtering" anything.

  • happybadger [he/him]
    ·
    4 years ago

    I am a filter feeder when I eat spaghetti because it traps the meatballs.

    • garbology [he/him]
      hexagon
      ·
      4 years ago

      Not sure what this has to do with filter-feeding, but doesn't B_B have at least 2 very obvious alts who have posted regularly since the ban? both base_ball2 and commie_crab or whatever.