6 of the Oldest Parasites Ever Found

1 931 Shikime 195 mijë

Where there's life, there's other life looking for a free ride. Here are six of the world's oldest parasites.
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Part 1
Part 2
Part 3


  1. PyreFox
    17 ditë më parë

    oh god Xenomorphia...it begins! next is Weyland Company!

  2. Robin Brisebois
    Robin Brisebois
    17 ditë më parë

    and the worst of these parasites have evolved into politicians!

  3. Chaz Searson
    Chaz Searson
    23 ditë më parë


  4. ZergrushEddie
    23 ditë më parë

    *30 year old watching ALfirst about oldest parasites.* Dad, walking by: “That ‘bout you, son?”

  5. KTVX.94
    25 ditë më parë

    50% of species, living off the other 50? What's this, Argentina?

  6. James Hill
    James Hill
    26 ditë më parë

    Mitch mcconnell comes to mind

  7. Jessica Evans
    Jessica Evans
    27 ditë më parë

    Awwww, no poop? But poop is why I watch scishow!

  8. Jessica Evans
    Jessica Evans
    27 ditë më parë

    So like a long flat spiral shaped thing of poop or spiraled cylindrical deal, like a normal everyday spring as opposed to slinky?

  9. Boris Petrov
    Boris Petrov
    27 ditë më parë

    Bravo - outstanding

  10. Boris Petrov
    Boris Petrov
    27 ditë më parë

    We are all parasitic

  11. Spencer Thompson
    Spencer Thompson
    27 ditë më parë

    Awesome episode thank you!

  12. John Takolander
    John Takolander
    Muaj më parë

    Here`s the seventh: Humans!

  13. Peter Trevorah
    Peter Trevorah
    Muaj më parë

    Would you call mitochondria parasites? (Or do symbionts not count?) If so, they predate even the oldest member of this list.

  14. Mayhem
    Muaj më parë

    That's funny about 60% of human species are considered parasitic as well!

  15. B0rder.-
    Muaj më parë

    I dont know man, the politicians in congress are pretty old

  16. James Crawford
    James Crawford
    Muaj më parë

    Recent studies have shown in some zombie fungus doesn't penetrate the brain but does the neural network which puppets them. This means the host are conscious and aware but unable to prevent themselves from rotting from the inside out before being allowed to die once the fungus is ready grow and to release spores

  17. Patryc
    2 muaj më parë

    fun fact: seagulls are kleptoparasites

  18. Holly Rockwell-Celerier
    Holly Rockwell-Celerier
    2 muaj më parë

    The green caterpillar is what we called Tomato Worms. Of course they aren't worms but we didn't know that. They are incredible eaters and just few of them can strip a tomato plant of all its leaves overnight. That meant that when they were in season we had to go out and check all the plants twice a day. They are very sneaky and hide under leaves; you can find a bundle of little ones are wrapped up together after they have just hatched. My father noticed that some of them were covered with little white stalks that looked like eggs. We brought one inside and waited. It was paralyzed but still alive up until the end when voila! a raft of tiny wasps burst out. Yay, we caught some of the wasps and put them back in the garden. Within weeks almost all the caterpillars had been infected and keeping up with the few left was easy. This was in New England. Imagine my amazement when they turned up in my garden in New Orleans! Nobody there had ever seen them before. There weren't any tomato plants around but they seemed to have immediately switched their diet to hibiscus plants. Noticing that my hibiscus plants were being denuded overnight I looked for some bug that could be eating them and found the little monsters. They are actually quite big, as long as 4", but so well concealed that you have to literally turn over every leaf and look underneath it to find them. They grab on tight so you really have to pull hard to get them off. Warning: If you find one do NOT pick it up bare-handed. They have gigantic pincers that will stick a good 1/2" into your finger on either side and they HURT. It is very hard to make them let go too. Best defense is nice tough gardening gloves and a little pail of soapy bleach water, but it takes them a long time to die so you may have to push them back in a few times if they crawl out. I sure wish I could find some wasps down here!!

  19. Oucyan
    3 muaj më parë

    "Around 50% of species are considered parasitic" Are humans included in that percentile?

  20. Junior InMoscow
    Junior InMoscow
    3 muaj më parë

    Why is it "SHIH-sto-sohme" but not "SHIH-tsoh-frih-knee-uh?" (Ignore me I'm being mad anally retentive rn lol)

  21. Mike, from Texas
    Mike, from Texas
    5 muaj më parë

    Ancient Parasites...? *(X-Files flashbacks)*

  22. Jose Alba
    Jose Alba
    6 muaj më parë

    # Why work Hard It's a free ride

  23. Katy Bechníková
    Katy Bechníková
    6 muaj më parë

    Interesting thought: Why are hosts always one step behind the parasite? Because all parasites had encountered a host, but only a few hosts encountered a parasite.

  24. 純ジュン
    8 muaj më parë

    Helminthic and parasitic infections are my least favourite subjects 😅

  25. Green Koopa
    Green Koopa
    8 muaj më parë

    The guy on the couch can confirm this sound strategy

  26. Magnus Maciejewski
    Magnus Maciejewski
    8 muaj më parë

    Interestingly enough, parasites are also a good bio indicator for ecosystem health due to the nature of their life cycles requiring sometimes several different host species, when there are less parasites that are known to inhabit species of a given ecosystem, this may indicate that one or more of the species are not present in sufficient numbers for the parasite to complete its life cycle, thus indicating that the ecosystem is being impacted by some other factor.

  27. superspoon
    8 muaj më parë

    just starting out this video; can't wait to see what number my ex is

  28. Ethan Hedger
    Ethan Hedger
    8 muaj më parë

    Kill me or release me parasite, but do not waste my time with talk!

  29. Zahbär Schmuni
    Zahbär Schmuni
    8 muaj më parë


  30. Steve K
    Steve K
    8 muaj më parë

    Hey, I've finally figured out why a democrat is a democrat!

  31. hat dog
    hat dog
    8 muaj më parë

    Among humans, most of them are "parasitic". One of the most ancient parasite is human behavior. Humans tend to use other humans for the expense of their own benefit.

  32. Beutimus
    9 muaj më parë

    Probably not the best ALfirst video to watch while eating breakfast. XD

  33. Jennylyn Pili
    Jennylyn Pili
    9 muaj më parë

    I was finally cured from herpes through the help of herbal Dr. Ikpoko on ALfirst

  34. Dark Knighte Apologeticz
    Dark Knighte Apologeticz
    9 muaj më parë

    Reminds me of some humans I know.

  35. Azure'Ra Morganna
    Azure'Ra Morganna
    9 muaj më parë

    Wtf 101... With Professor Foxtrot

  36. Luna Wolfheart
    Luna Wolfheart
    9 muaj më parë

    Why do all the hosts talk in the same way

  37. Adrian Margerison
    Adrian Margerison
    9 muaj më parë

    mmm Humans parasites on an eco system (Also so many humans are external parasites on other humans)

  38. Demigod
    9 muaj më parë

    omgosh tapeworms grow longer than the megalodon !!!!! wild

  39. St0RM33
    9 muaj më parë


  40. Stan Burton
    Stan Burton
    9 muaj më parë

    Parasitoids have been around even longer than that if you listen to the "Alien" anthology....

  41. Luke47895
    9 muaj më parë

    Human parasites are the worst ones.

  42. Vlad Tepes Dracula
    Vlad Tepes Dracula
    9 muaj më parë

    I'm not gonna eat sushi again...

  43. LordStradh
    9 muaj më parë

    And in the end evolution gave us politicians

  44. Jeff McNally
    Jeff McNally
    9 muaj më parë

    I’ve never been more disgusted... Or enthralled! 😯

  45. Daniel BBG
    Daniel BBG
    9 muaj më parë

    you are a parasite, actually, we all are, humans are a parasitic species i think, they take and take and never give up, we use our host, Earth to evolve and progress, but we slowly kill it. anyone agree or am i just that dude with random theories ?

  46. sandflesh
    9 muaj më parë

    the most destructive one is, us. I bet aliens refer to humans as, earth lice.

  47. Limey
    9 muaj më parë

    My mom takes cordyceps supplements...=/

  48. DownTopable
    9 muaj më parë

    9:57 I see all your patreons have increased the cgi budget substantially

  49. Jesse Rothhammer
    Jesse Rothhammer
    9 muaj më parë

    You on that horse was hilarious

  50. Zion Antoine
    Zion Antoine
    9 muaj më parë

    This reminds of the game 'the last of us'

  51. Jonatan Romanowski
    Jonatan Romanowski
    9 muaj më parë

    Go go Sci Show

  52. Dudepool
    9 muaj më parë

    These must be the ancestors of my scummy cousin.

  53. phonzy
    9 muaj më parë

    This video topic gives me chills

  54. Question Your World
    Question Your World
    9 muaj më parë

    Read an article about a new site discovered, showing evidence that homosapiens were in the Americas 12,000 years ago. If true, then they had more than enough time to infect wild mammals.

  55. Josh Zscheile
    Josh Zscheile
    9 muaj më parë

    Pooping while watching poop. Inpooption

  56. MLU8811
    9 muaj më parë

    I need to stop watching SciShow before sleep...

  57. BrittHalv
    9 muaj më parë

    I found a catipillar covered in wasp eggs on my moms tomato plant 😩

    1. BrittHalv
      9 muaj më parë

      The same day this video came out.

  58. Crazyninja30
    9 muaj më parë

    Amazing is it not that parasites found a niche so quickly in the history of life.

  59. Jeffrey Bernath
    Jeffrey Bernath
    9 muaj më parë

    I'd love to see a follow-up episode about ancient symbiotic relationships.

  60. F
    9 muaj më parë

    I was so sleepy when I read the title of this video that I thought it said "6 of the oldest pastries ever found" and was confused when the thumbnail didn't look like a pie

  61. umeng2002
    9 muaj më parë


  62. Ed Matthews
    Ed Matthews
    9 muaj më parë

    You should do an episode on the parasitic evolution of corporations and their CEOs. wasps and tape worms cant even come close to those parasites

  63. mbeuguel
    9 muaj më parë


  64. Herne Webber
    Herne Webber
    9 muaj më parë

    Just a thought, but since our eukaryotes began because of endocytosis of a microbe, and then as multicellular eukaryotes, we ended up needing an endo-biome within our intestines, and an exo-biome on our skins, I wonder how long it will be before a higher animal such as ourselves, or avian dinosaurs, end up using a macroendoparasite as an organ, gaining benefit from retaining the organism, while limiting its ability to cause harm? Are there examples of this? I know of one fish whose tongue tends to be replaced by a parasite. This may be an example of it being more beneficial than harmful, but... However, if some human parasite became non-lethal, and provided some digest digestive aid, without starving the host, I wonder what it might become, with us? I am reminded of the Trill species in, "Star Trek: Deep Space 9." Then my next wondering is, could we engineer a parasite to become an endosymbiote? Would you want to, yes or no, and please say why.

  65. RagingBubuli
    9 muaj më parë

    We call them Politicians!

  66. Annie Boom Fannie
    Annie Boom Fannie
    9 muaj më parë

    Is a human fetus or baby a parasite?

  67. Sagacious Eagle
    Sagacious Eagle
    9 muaj më parë

    2:59 You can say to someone you don't like or in public forums that something is a load of coprolite. That's as polite as you can get since it's not a conventional form of expression, therefore not derogatory.

  68. Jose Boyer
    Jose Boyer
    9 muaj më parë

    eating dairy = kleptoparasitism? go

  69. Kirbie
    9 muaj më parë

    we need a cowboy stefan to go along with muscle hank

  70. Alexagrigorieff
    9 muaj më parë

    Schistosoma pronounced as skistosoma.

  71. SnOpeK Domowei
    SnOpeK Domowei
    9 muaj më parë

    I just hate the term "worm tube"

  72. HauntedShadowsLegacy
    9 muaj më parë

    "Parasitism is a winning strategy" Aight, time to scroll through the comments looking for people talking about their exes.

  73. Bealzbob
    9 muaj më parë

    Rupert Murdoch.

  74. Felipe Carvalho
    Felipe Carvalho
    9 muaj më parë

    Hmm... I think we do parasite horses's energies

  75. God Yeeter
    God Yeeter
    9 muaj më parë

    *Don’t you dare 2020*

  76. Ananya Ravikumar
    Ananya Ravikumar
    9 muaj më parë

    I made the bad decision of turning this on in my lunch break. 🤢

  77. asailijhijr
    9 muaj më parë

    I'm amazed you didn't mention mitochondria.

  78. Inkognito Noori
    Inkognito Noori
    9 muaj më parë

    I read pastries instead of parasites

  79. Nathan Levesque
    Nathan Levesque
    9 muaj më parë

    Imagine scientists studying one of your random dumps ten thousands of years later

  80. Majestic
    9 muaj më parë

    Read the title as Ancient Pastries, was excited for a food history vid, not really too disappointed tho.

  81. ab ab
    ab ab
    9 muaj më parë

    _insert politician joke here_

  82. Storiaron
    9 muaj më parë

    Are we parasites of mushrooms?

  83. Andrés González
    Andrés González
    9 muaj më parë

    Thanks for the video! Kinda scary... One note on pronunciation: schistosoma should sound like schizophrenia or school.

  84. juutuub mine perse
    juutuub mine perse
    9 muaj më parë

    So they finally found a fossilised communist.

  85. Wriestheart
    9 muaj më parë

    Parasites are the spawn campers of the natural world. "It's a legitimate strategy!"

  86. Jordan nadroJ
    Jordan nadroJ
    9 muaj më parë

    Shout out to poop

  87. Jordan nadroJ
    Jordan nadroJ
    9 muaj më parë

    That's some serious schist

  88. Kendra VanBurkleo
    Kendra VanBurkleo
    9 muaj më parë

    They didnt even mention my ex husband..🤔

  89. Nicolás Cáceres
    Nicolás Cáceres
    9 muaj më parë

    I just came to read all the yo mama jokes

  90. Philip Anthony Kenny
    Philip Anthony Kenny
    9 muaj më parë


  91. Nyar 23
    Nyar 23
    9 muaj më parë

    PARASITES!!! *glomps* In my final year of university I got to do a presentation on the Neolithic. I spent an hour talking about parasites, explaining in great detail how schistosoma are picked up, and what the symptoms would be. It was riveting, and I thoroughly enjoyed myself... not so sure about the class though 😎

    1. C. R. G
      C. R. G
      9 muaj më parë

      This is by far my favorite post today :)

  92. Biran Falk-Dotan
    Biran Falk-Dotan
    9 muaj më parë

    Small Correction: the wasps you talked about are parasitoid, but not because they only feed on their hosts when young. In fact, a parasitoid is marked by the fact that it necessarily kills the host, as opposed to a parasite which would “prefer” for the host to stay alive. en.wikipedia.org/wiki/Parasitoid?wprov=sfla1

  93. Charles Johnson
    Charles Johnson
    9 muaj më parë

    I’m 19 and I’m a parasite if that counts for anything

  94. DrLilo
    9 muaj më parë

    So... Maybe beedrill doesn't actually evolve from kakuna. Maybe weedles are supposed to evolve into something more mothlike.

  95. gorthorki
    9 muaj më parë

    I reported this video for antisemitism.

  96. Gewel ✔
    Gewel ✔
    9 muaj më parë

    "More than 200 million people infected every year world wide" Somehow never heard of it

    9 muaj më parë

    I have found a formula to date😅. When sceintist say 17000 we should cut atleast one 0 so we will get 1700, and when sceintist say 700000000000000 we should cut 0s until it becomes logical enough like 7000. If we do that we will be more close to proper answer than a magical one.

  98. Robert Smith
    Robert Smith
    9 muaj më parë

    I was expecting an episode about lawyers or politicians.

  99. Hi im Ryan
    Hi im Ryan
    9 muaj më parë

    Parasitic wasps be like: they prey on caterpillars and are killed by other wasps who are killed by other wasps...

  100. Johnathan Novotny
    Johnathan Novotny
    9 muaj më parë

    There were no ancient brood parasites?