• danhab99@programming.dev
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    10 days ago

    I read this thing’s entire wiki page and it’s fascinating!!

    • Imo it’s not even an animal it’s just a collection of cells that can survive on their own but just don’t want too
    • It will rip itself into multiple parts spontaneously because cells don’t coordinate too much. They don’t have dedicated neurons but they have a decently complex peptide based protocol.
    • You can put a single Trichoplax animal through a sive that is fine enough not to damage the cells but separate them, and the cells will reform into the same animal
    • They can reproduce sexually but they don’t have any of the markers that all males of all sexually reproducing species have. Plus because they only ever sexually reproduce when there’s a high density of Trichoplaxs, it’s basically a pattern of Trichoplax cells choosing to break away and combine with other cells to create new individuals.
    • They’re just about as simple as e.coli and they’re the simplest animals with about 50mill base pairs divided into 6 chromosomes
    • They can take the organelles of the cells they eat just because. The wiki article calls it symbiosis but that implies that organelles are alive and I don’t think they are. I think Trichoplaxs can just take tools from other creatures to use.
    • azi@mander.xyz
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      10 days ago

      I think you misread wikipedia when it talks about its endosymbioses. Whole bacteria are found within an organlle (the endoplasmic reticulum) of Trichoplaxs.

      That being said what you described does happen in a number of organisms (including ‘complex’ ones like nudibranchs): they steal the chloroplasts from the algae they eat in a process called kleptoplasty. Seeing as mitochondria and chloroplasts originated as bacterial endosymbionts that were then heavily integrated into their hosts, calling kleptoplasty a form of symbiosis isn’t that unusual.