5 Ways Humans Are Influencing Species Evolution

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  • Опубліковано 28 тра 2022
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    Evolution is a never ending process, but there are some cases where humanity has given it a big push.
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    Sources:
    academic.oup.com/jue/article/...
    journals.plos.org/plosone/art...
    www.smithsonianmag.com/smart-...
    www.ncbi.nlm.nih.gov/pmc/arti...
    www.ncbi.nlm.nih.gov/pmc/arti...
    research.uga.edu/news/when-co...
    www.ncbi.nlm.nih.gov/pmc/arti...
    link.springer.com/article/10....
    www.researchgate.net/publicat...
    www.smithsonianmag.com/smart-...
    www.nature.com/articles/6884120
    www.science.org/content/artic...
    www.pnas.org/doi/full/10.1073...
    www.ncbi.nlm.nih.gov/pmc/arti...
    phys.org/news/2016-01-intense...
    www.storyblocks.com
    en.wikipedia.org/wiki/File:C-...
    commons.wikimedia.org/wiki/Fi...
    www.gettyimages.com/detail/ph...
    www.gettyimages.com/detail/ph...
    www.gettyimages.com/detail/ph...
    commons.wikimedia.org/wiki/Fi...
    www.gettyimages.com/detail/ph...
    www.gettyimages.com/detail/ph...
    www.gettyimages.com/detail/vi...
    en.wikipedia.org/wiki/File:Cu...
    en.wikipedia.org/wiki/File:Cu...
    en.wikipedia.org/wiki/File:Bl...
    www.gettyimages.com/detail/ph...
    www.gettyimages.com/detail/ph...
    www.storyblocks.com/video/sto...
    www.gettyimages.com/detail/ph...
    en.wikipedia.org/wiki/File:Es...
    en.wikipedia.org/wiki/File:No...
    www.gettyimages.com/detail/vi...
    commons.wikimedia.org/wiki/Fi...
    en.wikipedia.org/wiki/File:MA...
    en.wikipedia.org/wiki/File:Ov...
    www.gettyimages.com/detail/il...
    www.gettyimages.com/detail/ph...
    www.gettyimages.com/detail/ph...

КОМЕНТАРІ • 598

  • @h7opolo
    @h7opolo 2 роки тому +440

    1:23 "even though coyotes are not naturally nocturnal, they started looking for food at night to avoid humans."
    I'm something of a coyote myself.

    • @marilynlucero9363
      @marilynlucero9363 2 роки тому +16

      Makes me wonder in like 100,000 years if the Human species diversifies into a species that's more nocturnal...
      I am more of a nocturnal person as well and know that there's plenty of people living at night to avoid people.

    • @cabbage-soup
      @cabbage-soup 2 роки тому +11

      @@marilynlucero9363 We already have become more nocturnal. Inventions such as electric lights have made it easier for humans to stay up at night. People used to sleep much earlier than us modern folk.

    • @patlee8539
      @patlee8539 2 роки тому +13

      Note to self: Keep UA-cam commenters away from my cats.

    • @Temperans
      @Temperans 2 роки тому +4

      @@marilynlucero9363 There were always nocturnal people after all someone had to keep watch during the night. The difference is that now its a choice rather than being forced to do it.

    • @anyascelticcreations
      @anyascelticcreations 2 роки тому +4

      Same. I've preferred the night for most of my life. Largely to avoid other humans.

  • @mentalrebllion1270
    @mentalrebllion1270 2 роки тому +625

    This reminds me of a plant that is over harvested in the mountains of China. It used to be easier to find because of its brilliant color but then due to its popularity as a traditional medicine and the over harvest of it, those that remain in human accessible areas have changed color to camouflage with their surroundings. This change is not reflected in their counterparts in less easily accessible areas for humans. I forget the name of the plant though but I remember seeing this bit of news and found it interesting.

    • @RaptrRamblings
      @RaptrRamblings 2 роки тому +135

      That’s very interesting! And in my impulsive act of curiosity, I looked it up.
      The plant is called Fritillaria delavayi and due to rapid human harvesting, they’ve evolved from a bright green bulb to brown and grey, to match their environment.

    • @monsterxenomorphvelocirapt2185
      @monsterxenomorphvelocirapt2185 2 роки тому +9

      i don't like werewolves and i don't like vampires

    • @dewbiejointz6595
      @dewbiejointz6595 2 роки тому +1

      Because the harder to see ones weren't picked and survived so they were able to reproduce while the more brightly colored ones were easier to spot and plucked so they couldn't reproduce.

    • @mitchelldavis341
      @mitchelldavis341 2 роки тому +13

      There are certain species of weeds i pick , that over the years when pulled on they shoot there seeds to still spread there genes even when pulled its crazy also sucks to get a face full of seeds

    • @originalketchup7498
      @originalketchup7498 2 роки тому

      @@monsterxenomorphvelocirapt2185 are you brain damaged?

  • @daughterofthestars08
    @daughterofthestars08 2 роки тому +20

    I’d love to know if there was a study on the rattlesnakes in texas! I was struck by the anecdote that yearly rattlesnake hunts that find the snake because of the rattle were selecting for snakes with no rattle at all, which ironically makes their cattle and kids LESS safe because they take away the snake’s ‘alarm bell’.

  • @boxhead6177
    @boxhead6177 2 роки тому +186

    Australian White Ibis is also known locally as a Bin Chicken in cities.
    The more surprising evolution trait has been seen in rural Ibis populations in Northern Queensland, they have learnt how to catch and eat the poisonous Cane Toad. The Cane Toad is an evasive species that has no natural predators in Australia... until now.
    They will pick them up in their beaks and shake them violently until they squirt out the majority of their poison from their glands, then swallow them whole. The reward is an evolving behaviour and stomach changes (again like garbage eating) is they are less stress cause Cane Toads are fat, lazy and easy to catch.

    • @richmanricho
      @richmanricho 2 роки тому +19

      Came to comment about bin chooks, ended up learning

    • @justincraig398
      @justincraig398 2 роки тому +4

      Thanks for this , that was cool

    • @MerkhVision
      @MerkhVision 2 роки тому +1

      I wonder how those bin chickens learned how to deal with the poison!?

    • @boxhead6177
      @boxhead6177 2 роки тому +14

      @@MerkhVision The toxin is not as fatal to birds, due to evolution exposure to similar poisonous frogs. The rest appears to be just observation and experience.
      Raptors and crows have been documented learning what parts are safe to eat from picking at road killed Cane Toads.

    • @harshvatwani2202
      @harshvatwani2202 2 роки тому +2

      @@boxhead6177 so you mean that, the toads that were killed from car accidents, were a source of food for the birds and without any prior knowledge they learnt how to avoid the poisonous parts?
      I mean how do they know what part is poisonous and what isn't ?

  • @lizardmilk
    @lizardmilk 2 роки тому +19

    Elephants losing their tusks is another important example.

  • @wallaroo1295
    @wallaroo1295 2 роки тому +27

    I saw this happen with the whitetail deer in the region where I grew up. The state [Montana] started allowing more Outfitters [professional hunting guides] in, to draw in more out-of-state hunters and their money.
    The Outfitters would scout the deer for months, knowing everything about them, and take the "hunters" right to the male deer, with the biggest antlers. - Even often going so far as to cut fences, and trespass to get that kill for the high rolling hunters.
    Within a decade, the antler size had gotten much smaller, while the body size went up - because they weren't hunting primarily for the food value, but the trophy value.
    Montana has since corrected some of this behavior with the Outfitters, but - I don't know if it's already too late.

    • @kjm4422
      @kjm4422 2 роки тому +5

      In Pennsylvania I have noticed that bucks have definitely become more clever. And the older they are the more clever they are. Having their does cross a trail upwind from them a few seconds before he does to get the hunter to look the other way. I have even seen them hunched down walking on their knees (?) to stay unseen walking along a drift fence.

  • @georgefleming4956
    @georgefleming4956 2 роки тому +93

    The same size reduction ( or absent) is happening with elephant tusks.

    • @feralbluee
      @feralbluee 2 роки тому +6

      same with rhinos 🦏 it’s really a shame. African elephants with long tusks are incredibly majestic - just beautiful creatures. :)
      should we bring back mammoths ? :)🦣

    • @harshvatwani2202
      @harshvatwani2202 2 роки тому +3

      @@feralbluee I think they are already trying to recreate the mammoth but it is incredibly difficult, so far I have heard.

    • @shawnheng4686
      @shawnheng4686 2 роки тому +1

      Omestly i wonder how would they fight without tusks. Trunk wrestling?

    • @feralbluee
      @feralbluee Рік тому

      @@shawnheng4686 yeah, maybe. they already use them for so many things. and they’re smart as heck!! :) 🐘🌷🌱

    • @feralbluee
      @feralbluee Рік тому

      @@harshvatwani2202 yeah, in SciFi it’s so easy. but DNA 🧬 is so delicate. so much can go wrong. wouldn’t it be great though if we could bring some of them back. have a good day :) 🌷🌱
      (even in criminal cases, they’ve messed up the DNA and an innocent person is blamed - and sent to jail!! very annoying and very bad bad lab work!!)

  • @jacobstreets8445
    @jacobstreets8445 2 роки тому +201

    Great video. The hunting/ fishing of the biggest and healthiest made me think about natural selection of predators, where they typically hunt the weakest and cull the herd of the weak and sickly. Sport hunting creates the opposite effect.

    • @shamrock5725
      @shamrock5725 2 роки тому +24

      Indeed it does, I have hunted for most of my life and personally I try to harvest the ones that are not at peak shape.

    • @Gloria.A
      @Gloria.A 2 роки тому +9

      Thank you for bringing this up. I had never thought of it before.

    • @willieclark2256
      @willieclark2256 2 роки тому +9

      Correct, which is likely humans role as predators. As moderators. Rams (in this instance) that grew larger than necessary horns for survival were killed off by humans, those that were too small or weak killed off by wolves. Those that are left are the goldy lox genes, big enough for survival but not expending (or consuming) extra energy on unnecessary gear

    • @nitramreniar
      @nitramreniar 2 роки тому +20

      @@willieclark2256 except if that expenditure of energy was a significant disadvantage for no benefit, that would already negatively impact their ability to reproduce. Even if bigger horns only lead to better chances of reproduction, because the opposite sex finds those more attractive for arbitrary reasons: who are humans to say which size of horns is "ideal" for those animals? If the amount of energy they spend on growing their horns would be too much or the large horns would become cumbersome to them, natural selection would cover that already.

    • @willieclark2256
      @willieclark2256 2 роки тому

      @@nitramreniar your point is built on the premise that human predation isn't natural. Second the expenditure of excess energy on 'animal weapons' actually leads to the extinction of hooved animals because they starve themselves trying to keep up with sexual selection i.e. the Irish Elk. Big horns are always more attractive to female cervid/bovine species so without a natural moderating force (human predation) these animals all follow the same route to starvation, not adapting but opening that niche to their subordinate/ smaller species (we see it this very day with whitetail expansion into mule deer range)

  • @arcosprey4811
    @arcosprey4811 2 роки тому +13

    Every time I kill a slow mosquito I shed a tear at the thought that I judt naturally selected for faster mosquitos.

    • @julesverneinoz
      @julesverneinoz 2 роки тому

      Mosquitos in the tropics are much faster than in temperate areas. The favourable temperature means higher population and faster breeding, resulting in faster evolution. Global warming as it is, soon enough the temperate zones will get faster mosquitos. I am not looking forward to that!!

    • @franimal86
      @franimal86 Рік тому

      Every time I miss killing a fast mosquito I think the same thing!! The hardest ones bounce around in the air

  • @aerynsunx
    @aerynsunx 2 роки тому +90

    Here for continued support of Michael's hair "evolution" into decidedly, firmly, metal territory. Not sure if I miss the highlights, yet.

    • @confusedwhale
      @confusedwhale 2 роки тому +4

      He normally puts some in around Halloween.

    • @Primalxbeast
      @Primalxbeast 2 роки тому +8

      Long hair is fine, but it really bugs me when people pull it over one shoulder.
      Grow your hair as long as you like, but I'm disturbed by your asymmetry.

    • @dipstiksubaru3246
      @dipstiksubaru3246 2 роки тому +4

      They.should do a video on his mane!

    • @mywa8314
      @mywa8314 2 роки тому

      No. He looks like a hippy. Cut it now.

    • @dipstiksubaru3246
      @dipstiksubaru3246 2 роки тому +2

      @@mywa8314 no he looks amazing! You're probably just jealous.

  • @KristiContemplates
    @KristiContemplates 2 роки тому +25

    In Australia the Ibis is known as the "Bin Chicken"

    • @nkordich
      @nkordich 2 роки тому +2

      There is a humorous mockumentary here on UA-cam called, "Planet Earth: Bin Chicken". I'd post a link, but it may get filtered as spam - it should come up in a search.

    • @julianschwertzthewoodlands4161
      @julianschwertzthewoodlands4161 2 роки тому

      I can thank Bluey for teaching me this, lol.

  • @BartonHNewell
    @BartonHNewell 2 роки тому +9

    If Michael doesn't do every ad from here on out, we all collectively agree to riot.

  • @EvolvedSungod
    @EvolvedSungod 2 роки тому +8

    Maybe that's part of why some ancient cultures made myths about the largest and strongest of a species, saying to show it respect. When you hunt those ones you hurt your future hunting options

  • @jonasinsinga4309
    @jonasinsinga4309 2 роки тому +43

    At least in South Florida, where I live, local white ibises have learned that human lawns are a great place to probe for earthworms and insect grubs. I often see them parading across people's lawns and through gardens doing just this.

    • @jonasinsinga4309
      @jonasinsinga4309 2 роки тому +2

      BTW, I see someone's been reading "Darwin Comes To Town", which is a book specifically about urban evolution. If anyone hasn't read it yet, it's a really good read! :)

    • @trishapellis
      @trishapellis 2 роки тому +9

      No more need for lawn flamingos

  • @devilslamp7306
    @devilslamp7306 2 роки тому +19

    In my state, there are rural areas where the local landownder/hunters have taken to ignoring the conservation department's regulations. Instead of taking the larger antlered bucks, they try to determine the buck's age, and cull the older bucks with smaller racks. I first heard about this 20 years ago but I'm sure it's been going on for longer, and now the biggest bucks in my state are all coming from these areas. It does require cooperation from all the landowners in the area, in order to ensure that the most well-endowed bucks survive to reproduce. It also requires a degree of secrecy, since they are technically committing a crime every time they take a buck with an undersized rack.
    They have essentially formed an undeground conservation department, specifically to counteract the human-induced selection pressure of trophy hunting.

    • @that.neurodivergent
      @that.neurodivergent Рік тому +3

      As someone who grew up in Montana, I adore this. People who ask me about Montana assume that hunters and fishers are mostly the trophy-type but in reality they usually care more about the environment AND do more for it than the most yuppie Portlander could

    • @vernonfridy8416
      @vernonfridy8416 Рік тому +1

      Interesting! Thanks for sharing.

  • @BigMobe
    @BigMobe 2 роки тому +48

    I encountered deer, turkeys, rabbits, groundhogs and bears while in upstate NY. The bears mostly stayed in the tree line but everything else you could find out on the road at night and into early morning. Even stranger was that they wouldn't run away most of the time. Now I mostly just see the usual possums, squirrel, geese, raccoons, ducks and maybe an occasional escaped farm animal like chicken or goat.

  • @austinbutts3000
    @austinbutts3000 2 роки тому +116

    Don't forget, the increased interactions between wild animals, domesticated animals, and us humans are fueling a lot of viral evolution. Didn't think we needed a reminder of that after the last two years, but we're probably getting more of those kinds of reminders in the coming decades anyway. Hang on for the ride, everyone!

    • @oneshothunter9877
      @oneshothunter9877 2 роки тому +2

      Monkeypox: let me introduce myself 😎

    • @theninja4137
      @theninja4137 Рік тому +1

      Im at home with Covid and currently my day consists of existing on a couch

  • @thesephiam
    @thesephiam 2 роки тому +114

    Bacteria evolving to process plastic is something I’m curious as to what effect it will have in thousands of years. Will those bacteria eventually become gut bacteria making it possible for some termites or rodent to eat plastic?

    • @1MarkKeller
      @1MarkKeller 2 роки тому +35

      Hell, we all will need it because we inadvertently ingest it as well.

    • @c.fyffe0
      @c.fyffe0 2 роки тому

      @@1MarkKeller hah no it's small enough to become part of our DNA so plastic eating bacteria sounds terrifying

    • @aronm5329
      @aronm5329 2 роки тому +14

      my theory is that plastics will just be more like wood produces, where they will decompose in a few years or decades vs centuries. Good for cleaning up the plastic out there and sadly inside us, but it will probably release more greenhouse gases

    • @1MarkKeller
      @1MarkKeller 2 роки тому

      @@c.fyffe0 ?

    • @massimookissed1023
      @massimookissed1023 2 роки тому +12

      Some mealworm larvæ can eat and somewhat digest polystyrene thanks to their gut bacteria.

  • @BlueFrenzy
    @BlueFrenzy 2 роки тому +155

    Yet, there's still people out there that doubt evolution, where they could measure it by themselves.

    • @Abcwhatever
      @Abcwhatever 2 роки тому +42

      "I do not see it happen, therefore it's not real." Also "I do not want to spend the time looking up [topic], but I know my view is correct"

    • @xotbirdox
      @xotbirdox 2 роки тому +32

      @@Abcwhatever That's so funny to me bc most people who deny evolution are Christian creationists. 😂 Like oh so you don't see it so you don't believe in it?? So, there's no God, right? Right??? *insert Anakin and Padme meme*
      (This is not a dunk on religious people btw, only evolution deniers! I'm a Welsh Pagan myself who follows the Druidism route and believes that the power of the Gods is within the Earth rather than separate, physical deities, but if you believe in any deity/creator or multiple deities/creators, more power to you! But you can't deny that evolution is real is all)

    • @logosnomos3794
      @logosnomos3794 2 роки тому +1

      Selective breeding does NOT prove evolution. Selective breeding is even in the Bible.

    • @experience741
      @experience741 2 роки тому +8

      Because most of them believe in thousand years old fairy tale books

    • @logosnomos3794
      @logosnomos3794 2 роки тому +3

      @@experience741 Like the fairytale "Origin of Species?" The kids love it and the unicorn intermediate species.

  • @Giaa_7
    @Giaa_7 2 роки тому +5

    He has the most perfect voice for narration. Good job finding him SciShow!

  • @rhysdavis5726
    @rhysdavis5726 2 роки тому +44

    I wish there was a bit in this about rattlesnakes! I heard that rattle snakes have been naturally selected to not rattle before striking; the snakes that expose themselves ended up killed since humans hate snakes... I would love to see if anyone's done a real study on it or if this is just an urban legend.

    • @MichaelRainey
      @MichaelRainey 2 роки тому +10

      Urban rattlesnakes are grayer than their more brown wild cousins to blend into concrete and landscaping. I can see an experienced rattler not rattling at a human, relying on their stealth rather than risk failing an intimidation roll.

    • @Temperans
      @Temperans 2 роки тому +2

      I wouldn't say that we hate snake. More like we are collectively taught that snakes are dangerous and that their bite can kill. We also have the natural instinct that "rattling sound might be snake" which can be for a number of reasons.
      I can 100% see a snake learning to not rattle in the presence of humans. Or more specifically the snakes that don't rattle are naturally more cautious and thus more likely to reproduce. Not being aggressive towards another species is something that can be bred (as shown by domestication).

    • @arthanor9631
      @arthanor9631 2 роки тому +5

      @@Temperans PBS Eons has a video of primates and snakes and their co-evolution. Check it out. Apparently we do have somewhat of a rivalry.

  • @PhantomQueenOne
    @PhantomQueenOne 2 роки тому +5

    In America raccoons are called 'trash pandas', in Australia white Ibises are called 'bin chickens' because they both go through the trash for food.

  • @AryadiSubagio
    @AryadiSubagio 2 роки тому +8

    I don't remember whether I knew this from SciShow or other science channel, but every animal interactions are so closely related to each other and their environment, if humans (accidentally or not) remove an animal to extinction it would basically mean the imbalance in an ecosystem. The apex predator would keep on eating other animals without the old predator keeping their numbers in check, and soon the house of cards of species fall apart.
    Watching this video reminded me of that fact.

  • @rkozakand
    @rkozakand 2 роки тому +29

    When you were talking about bighorn sheep, you showed an image at 08:12 that was definitely NOT a bighorn sheep. It looked more like an Argali, or possibly a Barbary Sheep. The skulls that you showed at the end of that segment were definitely of Argali. Your fact checkers need to be more careful.

  • @DragonTamerRi
    @DragonTamerRi 2 роки тому +3

    I came here to learn and I did. I came to comment because I have never seen a snack bar eaten so fabulously before in my life. That was art.

  • @calladricosplays
    @calladricosplays 2 роки тому +3

    Rattlesnakes with defective rattles are more common now because so many of those that gave a warning were killed. This has led to a rise in "unprovoked" attacks

  • @sergeantsonso3490
    @sergeantsonso3490 2 роки тому +86

    what happened to the bighorn sheep in canada is the same thing that's happening to the whitetail deer population in florida. I've been hunting for over 15 years in florida, and i've noticed that just in that short amount of time alone, the deer have gotten progressively smaller, with more and more diminutive antlers. this is because the legislation which allows the taking of antlered deer during certain seasons has the deer being claimed far before they can even establish a herd of their own and spread their genes. this creates father dissipated herds that are more shy, more elusive, smaller, and most importantly, not really legal to shoot, even well into adulthood.
    the selective pressure applied by humans artificially selects for deer less likely to form herds, less likely to rut, less likely to breed, and less likely to grow antlers more than 2-3 inches in length with more than a total of 4 points.

    • @DonnaBarrHerself
      @DonnaBarrHerself 2 роки тому

      Maybe we should buy a clue and stop killing Natives. We have our own food. I no longer fish and I buy and harvest nothing wild. Very few humans have to. But which of us has the guts to quit?

    • @sergeantsonso3490
      @sergeantsonso3490 2 роки тому +9

      @@DonnaBarrHerself actually if more people just practiced sustainable hunting, the land and wildlife would be much better off. hunting is a conservation effort and it's vital to the ecosystem.

    • @connormcgee4711
      @connormcgee4711 2 роки тому +4

      Very interesting! I wonder what impacts the lower herd sizes have on social development in young deer. Likely a small evolutionary change would cause a more dramatic behavioural change because young deer may follow their more solitary parents rather than a genetically identical deer from a larger herd.

    • @Primalxbeast
      @Primalxbeast 2 роки тому +2

      But the little guys are probably happy to be getting some tail.

    • @sergeantsonso3490
      @sergeantsonso3490 2 роки тому +8

      @@connormcgee4711 this is basically what seems to be happening. Weirdly, there are still big bucks out there, but they are ALL solitary, skittish, and very difficult to see.
      they also seem to just be more clever than deer in other states, very intelligent.
      mind you this is just things i've observed on public land, specifically WMAs. the same might not apply on private land where deer are not hunted / hunted less.
      it's also worth noting that Florida has a huge issue with poachers, our rangers seem incapable of regulating season, legal shooting time, legal shooting age, etc. just very poorly managed all around, unless we're talking about state parks.

  • @WEYffles
    @WEYffles 2 роки тому +10

    I was actually thinking about whether fish had adapted to fishing practices or not, thank you🙏

  • @kingmdalby4569
    @kingmdalby4569 2 роки тому +3

    Can we have a video looking into the changes we've made to farm animals? Sheep, horses and ornamental birds have fascinating changes. Only a few thousand years but wow!

  • @allstarwoo4
    @allstarwoo4 2 роки тому +20

    I always wondered when fish size would be affected. I know why we legally harvest over certain size but at what point does small not equal immature?

    • @jeffbybee5207
      @jeffbybee5207 2 роки тому

      The code in the grand banks off Canada used to be up over one hundrred pounds and were fished out till it was no longer profitable. To try reviving the fishery its was stoped for years but today iirc they only grow to 25 or 30 pounds. Sorry if I have misremembered

    • @allstarwoo4
      @allstarwoo4 2 роки тому +2

      @@jeffbybee5207 that’s understandable. Even then if you look at footage of deadliest catch and compare early season catches to late you’ll see problems with over fishing. Different animals but similar consequences less or smaller catches the more fisheries are stressed.

    • @arthanor9631
      @arthanor9631 2 роки тому +1

      Large mature fish make a much bigger contribution to reproduction because in fish, you can have a lot more eggs. Taking them out hurts the species now because they can't reproduce as much (meaning over time less fish to catch) and later because they will not have the genetics to make fish as big even if they had the time to grow, so the fisheries never recover.
      Fishing smaller fish means they can't reproduce, sure, but the weight in small fish taken is weight in large reproductive powerhouses not taken. It looks like this could be healthier for a population. Same biomass, less impact on reproductive capacity and genetics.
      The problem then is designing the right way to fish and we still need to figure out how much to fish as well. We tend to fish too much because on the short term it keeps the fishermen happy and thus the government can be reelected. Fishermen themselves also have a tendency to overestimate the abundance of fish by constantly fishing in the best spots while it is in the crappy spot that the population first declines (take away fish from good spot, fish in crappy spot moves to good spot, fisherman still catches fish, no visible problem until there isn't any fish moving in and it's already too late).

  • @StYxXx
    @StYxXx 2 роки тому +26

    "Almost as if modern species evolved to their modern form and just stopped" - sadly, we had a teacher who thought that this was the case. Luckily she wasn't teaching biology and was ridiculed by students for the stupidity.
    The hair shaking at the end was mayestic!

  • @bradleywrage649
    @bradleywrage649 2 роки тому +1

    For anyone interested in the Coyote example, I highly recommend reading(or audiobook) Coyote America by Dan Flores as well as the 2 part episode of The Field Guides podcast. its seriously cool.

  • @MissBlueEyeliner
    @MissBlueEyeliner 2 роки тому +4

    Evolution is so fascinating!
    Thanks SciShow 💕

  • @TriaMaxwell
    @TriaMaxwell 2 роки тому +7

    Elephants are having the same issue with tusks

  • @igguka
    @igguka Рік тому

    All this info is cool (as are most of the episodes) but the most pleasing part has been watching your mane grow!! Amazing!

  • @KnowledgeCat
    @KnowledgeCat 6 місяців тому +1

    Really learned a lot from this, thanks for the insightful content!

  • @leojaramillo6618
    @leojaramillo6618 2 роки тому

    Such a good video! Wish there was a pt2! Just scratching the surface

  • @hhwippedcream
    @hhwippedcream 2 роки тому

    Thank you for your excellent work educating folks about this very important topic.

  • @InertFoxtrot117
    @InertFoxtrot117 Рік тому +1

    Reminds me of an article I read about elephant tusks becoming smaller over time due to poaching. Bigger tusks were targeted and smaller tusked males were able to reproduce

  • @abdullahak2204
    @abdullahak2204 2 роки тому

    Interesting.!
    This sheds light on so many issues!

  • @levimilliron3807
    @levimilliron3807 2 роки тому +1

    I gave this a thumb up for firstly the evolution finds but mostly those luscious locks of hair!

  • @Nawaf-
    @Nawaf- 2 роки тому

    10:10 🤣 When something taste good I whip my hair back and fourth

  • @reymartbara2206
    @reymartbara2206 2 роки тому +4

    Im always taking out the snail that go to the surface water of my aquarium... Does that mean im selectively breeding snails that stay below the water hahaha

  • @fionaroni
    @fionaroni 2 роки тому +3

    on one hand i feel like we’re humans and should hold ourselves to a higher standard of morality and compassion but on the other hand it’s also a lot of pressure and a huge job for humans to simultaneously advance as well as stay inclusive and considerate of other species. it’s such a complicated balance that seems impossible to achieve.

  • @paulsherriff6337
    @paulsherriff6337 2 роки тому

    Always excellent Michael

  • @Shikachu55
    @Shikachu55 2 роки тому +3

    Speaking of evolution, if you are looking for differences in a smaller time frame some plants go through hundreds of generations by the time we cycle through one. I love plants!

  • @NullNoxproduction
    @NullNoxproduction 2 роки тому

    Amazing information 💯❤️

  • @revolvermaster4939
    @revolvermaster4939 2 роки тому +4

    I’m pretty sure the entire history of life is full of examples of one species influencing the evolution of another.

    • @cursedGalataea
      @cursedGalataea 2 роки тому +2

      Yes very good. In this video, we explore the consequences of humans doing exactly that!

    • @julianschwertzthewoodlands4161
      @julianschwertzthewoodlands4161 2 роки тому

      I would really love to see a video on how other species influenced the evolution of another.

    • @John_Smith_60
      @John_Smith_60 Рік тому +1

      @@julianschwertzthewoodlands4161 Every predator/prey relationship shows two species influencing the evolution of the other: the prey evolves a defense to confound the predator; the predator evolves a mechanism to overcome the defense; the prey evolves a defense to confound that mechanism; the predator evolves a mechanism to overcome that defense (rinse and repeat).
      One kind of example would be a poisonous frog developing a more toxic poison, its predator developing tolerance to the poison, the frog developing a still more toxic poison, the predator developing resistance to that poison, and so on. You end up with an extremely deadly frog, but with a seemingly miraculously (if you didn't know the history) resistant predator.
      Another kind of example would be an antelope and cheetah, but in this case would be evolving into faster and faster runners.
      Try searching "predator prey arms race".

  • @SargamSundrani
    @SargamSundrani Рік тому

    very informative!

  • @calessel3139
    @calessel3139 2 роки тому

    Like the coyotes, a Canadain study found similar diverged between rural and urban raccoon populations. It was discovered that urban raccoons shared more in common with other urban raccoons than their rural cousins and visa versa.

  • @rocketRobScott
    @rocketRobScott 2 роки тому

    I might have to start watching more commercials now … the elegance. LOL

  • @franklehouillier8865
    @franklehouillier8865 2 роки тому +5

    Is the rattleless rattlesnakes evolving thing a myth or not?

    • @GoofballLOL
      @GoofballLOL 2 роки тому +1

      I'm researching this right now and gathering data for other folks researching this, and as of right now the data is insufficient to affirmatively say this is occurring. So, for now, myth, but with enough time I'm sure it will be the verified as true.
      It is also worth mentioning that it would be a localized occurrence rather than ubiquitous across all rattlesnake populations, and the driver of it would differ too. Humans could do it, as could feral hogs. It could also be indirect, as their rsttle gives them away not to potential predators, but even prey. If their diet shifts enough to favor certain animals, their rattle would become obsolete.
      It's important to note that when researching this, it's incredibly difficult, since it's a behavioral change that can really depend from individual to individual, and it is also very prone to confirmation bias.
      Us snake researchers are working really hard to figure this out, so it means a lot that you've asked!

  • @hazeltownshend2355
    @hazeltownshend2355 Рік тому

    That was the smoothest transition to a brand deal I've ever seen

    • @heatherkuhn6559
      @heatherkuhn6559 Місяць тому

      Adam Ragusea is an artist at ad transitions.

  • @asklar
    @asklar 2 роки тому

    7:35 that pike fish looks so sad and scared like 🥺

  • @ArchDudeify
    @ArchDudeify 2 роки тому

    Outstanding hair toss in the ad 😎🙆🏻‍♂️🙋‍♂️

  • @uhohhotdog
    @uhohhotdog 2 роки тому

    This is my favorite topic

  • @kassywilson7292
    @kassywilson7292 Рік тому

    I can confirm the sighting of coyotes in NYC. A reliable witness was surprised by one on her walk home from work in the Bronx this week.

  • @daniwells4195
    @daniwells4195 2 роки тому +1

    Jokes on yall, I was laying down and DID have a snack next to me lol.

  • @lesleyghostdragon3149
    @lesleyghostdragon3149 2 роки тому +1

    Ugg. Grrr. Me like Munk Pack. Munk Pack good. Grr.

  • @lyreparadox
    @lyreparadox Рік тому

    Yeah, funny thing about that study of coyotes in LA 30% of their diet may have been people food, but more than 50% was pets/strays they'd killed and eaten.

  • @istvansipos9940
    @istvansipos9940 2 роки тому

    speaking of urban winners, central station sparrows collect the insects from the wind screens of waiting trains.
    they also chirp-beg for food, and many of them are brave enough to take the offered food from your fingertips.

  • @earthcoloredeyes5043
    @earthcoloredeyes5043 2 роки тому +1

    I’ve said this for twenty years guys! Same reason why dear and elk are smaller today than 50 years ago.

  • @edwin4846
    @edwin4846 2 роки тому

    pewds roasts the facia hair 5 yrs ago and you still rocking it, way to go!

  • @aliceyuen5721
    @aliceyuen5721 2 роки тому +1

    Maybe he's born with it, maybe it's Munk bars

  • @tomtheplummer7322
    @tomtheplummer7322 2 роки тому

    The GOAT of all rams.

  • @induspherix
    @induspherix 2 роки тому

    That is what I call enlightening edification

  • @JohnDoe-nv5oe
    @JohnDoe-nv5oe 2 роки тому

    Scishow: How humans effect evolution! Woo!
    Evolution: The Anthropocene

  • @injunsun
    @injunsun 2 роки тому +2

    A small correction, at 1:10 in. Coyotes are native on the entire continent, not just, "West of the Mississippi." We have them in Appalachia. I'm fairly certain they didn't just spread to here, and on up into Canada.
    As for fishing changing species, look at the Great Lakes. There used to be commercial fishing. Introduced species like the aylewife (intentionally) and sea lampreys (accidentally, via the Erie Canal), ended that. More recently, the Mediterranean zebra mussel had devastated the entire Great Lakes ecosystem, by filter feeding from greater depth than normal mollusc predators go. Species of fish that used to be plentiful and found everywhere are now only found sporadically, usually nearer where cities expel their sewage, such that there's enough of the old food web left to sustain them.

    • @locodiver8665
      @locodiver8665 2 роки тому

      And now gobies are making it even worse

  • @stefansauvageonwhat-a-twis1369
    @stefansauvageonwhat-a-twis1369 2 роки тому

    1:59-2:00 glitch of the maps NYC appearing on the host lol

  • @bandaid007jl
    @bandaid007jl 2 роки тому

    Thanks

  • @johnzengerle7576
    @johnzengerle7576 2 роки тому +1

    I have heard that the squirrels in London turned to darker fur starting during the industrial revolution because it better fit in to their sooty, darker environment.

  • @richardaitkenhead
    @richardaitkenhead 2 роки тому

    We don't have cayotes in Scotland but we have foxes, when I was young you never seen them maybe 1 or 2 a year, now 30 years later, they are everywhere a night tine drive will see 5 or 6, even see them during the day now.

  • @birdnird
    @birdnird 2 роки тому

    Let’s not forget that the heavy human predation on rattlesnakes for those revolting “rattlesnake roundups” have forced selection for quieter snakes

  • @Svensk7119
    @Svensk7119 2 роки тому +1

    I don't think it is "ibises". Maybe it is....
    If they had removed the bolder fish, they would have opened up niches for the timid ones, so they would become bolder.

  • @DiscoChixify
    @DiscoChixify 2 роки тому +1

    Such awesome hair 🥰

  • @sylviaelse5086
    @sylviaelse5086 2 роки тому

    The increasing rate of elephants lacking tusks is another example. No tusks means not getting shot for ivory.

  • @nickonerd
    @nickonerd Рік тому +1

    I figured this was a thing, as society we assume things evolve outside of our activities, it is our ignorance that does contribute to changes in even animal behavior especially. Like society will label other plants, bugs, and animals as "invasive" but tbh humans are the most invasive species. We just don't like that word applied to ourselves.

  • @gaeshows1938
    @gaeshows1938 2 роки тому +1

    bull-goat set and lightning ram

  • @lauramanuel7619
    @lauramanuel7619 2 роки тому +2

    That hair toss! 😆 love it man!

  • @BESHYSBEES
    @BESHYSBEES 2 роки тому +1

    In Australia 🇦🇺 ibises are known as bin chickens 🐓

    • @dougstubbs9637
      @dougstubbs9637 2 роки тому

      The Bin Chicken is going to be the mascot for the 2032 Olympics.

  • @Kongolox
    @Kongolox 2 роки тому

    wonder if we put back the cayotoes will they change back? or it will be a whole new change?

  • @sherlockfury
    @sherlockfury 2 роки тому +1

    7:00 how the hell do they know the qualities of the fish they DIDN'T catch?

    • @bigpurplepops
      @bigpurplepops 2 роки тому

      Because the fish bold enough to catch tended to be bigger compared to the average for the species

  • @elisam.r.9960
    @elisam.r.9960 Рік тому

    I'd just like to drop a (belated) comment to express my appreciation for the title. It lacks clearly clickbaity all caps tactics and gets to the point. I will watch more videos that have titles which embrace these principles.

  • @seatbelttruck
    @seatbelttruck 2 роки тому

    Coyotes started becoming more nocturnal to avoid contact with humans? *Me watching this at 1:00 AM* "Not just coyotes."

    • @John_Smith_60
      @John_Smith_60 Рік тому

      I think some of us may be evolving into Morlocks.

  • @Delta_Tesseract
    @Delta_Tesseract 2 роки тому +1

    Here is an off topic, fringe, pseudo-science, theory I had yesterday. What are your thoughts on the following? I can take the criticism so don't hold anything back. Thanks!
    What if the pyramid structures doted around the planet at specific latitudes and longitudes were ancient Ham Radios?
    If the piezoelectric effect were generated by the mass of the pyramids, while the buildings surrounding were equipped with stone analog logic gates you could say the entire Giza Plateau was a circuit board the size of a city. While harnessing that much geomagnetic energy it might be possible to tune the occilating frequency output from the obelisk towers. Thus turning it into an ancient two way antenna/ Ham Radio. If the output carrier wave were specifically tuned to the inverse harmonic resonance of the ionosphere you could, in theory, bounce data packets across the world to every other pyramidal structure set as a two way receiving antenna, simultaneously. Theoretically a 12,500 b.c.e. to 30,000 b.c.e world wide telegraph network of the most rudimentary design might have been possible.
    Think of the quartz crystals used as transducers, and signal attenuators housed within the logic gates which comprised the circuitry.
    One caveat. All this obviously assumes that boolean logic, and binary data transformations were harnessed to disambiguate between background radio noise and carrier waves.
    Now the hurdle of proving it which will undountedly be impossible. Because the passage of tens of thousands of years has erased everything not made of megalithic stone.
    But I digress.
    I'm clearly not an electrical, or computer, engineer. But if you can entertain the possibility by making several quantum leaps of faith I'd love to hear any alternative theories you might have.
    Thoughtfully yours;
    Delta Tesseract
    -{ 💚 }-

  • @liizs2863
    @liizs2863 2 роки тому

    You really called me out for lying down and not wanting to get up for food

  • @amiebrooks1458
    @amiebrooks1458 2 роки тому +1

    The ibis in Australia are the same. We've taken their wetlands...

  • @TheDevian
    @TheDevian 2 роки тому +2

    But, which species of stork did we train to carry babies? ;p hehehe

  • @RickySTT
    @RickySTT 2 роки тому

    Michael showing off his mane. Meanwhile, my own terminal length has shrunk to the point where my mom no longer gets on my case to get a haircut.

  • @benjones1717
    @benjones1717 2 роки тому

    White Ibis, colloquially known as a bin chicken in Australia.

  • @LoganAddisMusic
    @LoganAddisMusic 2 роки тому

    That mosquito's latin name is so accurate because they do "molest us" 😆

  • @spiderthecat
    @spiderthecat 2 роки тому

    I'm kinda surprised that they didn't mention the peppered moth.

  • @NajwaLaylah
    @NajwaLaylah Рік тому

    If Munk Packs give you hair like his, they're worth every dime.

  • @ResortDog
    @ResortDog 2 роки тому

    Evolution: The gift that keeps on giving despite ANYTHING any species throws at it [edit: or at somethings former predator or competitor]

  • @ppizbig9146
    @ppizbig9146 2 роки тому

    It’s the little meow after he said pets cats for me

  • @Gr3nadgr3gory
    @Gr3nadgr3gory 2 роки тому

    Smaller horns are generally less of a waste of nutrients. Just look at the moose, it has to eat so much to keep those things.

  • @petenielsen6683
    @petenielsen6683 2 роки тому

    Coyotes are abundant in eastern states now, but most of the ones we see here are smaller than their western brethren. That may be an adaptation too.

  • @mlck24
    @mlck24 2 роки тому

    So I guess an acceptable range should be set for harvestable horns? Not just a minimum but also a maximum so that those with larger horns still stay in the population.

  • @GavinMunson
    @GavinMunson 2 роки тому +2

    An additional hypothesis, I bet the ibis gets less parasites because our city’s are fumigated for pests.

    • @birdnird
      @birdnird 2 роки тому

      I was wondering if this might be the case - exposure to pesticides in human-altered environments. Corvids (crows and jays) have been recorded picking up cigarette butts and applying those to their feathers to control external parasites. Maybe the Ibis have figured out something similar? Though it is probably incidental pollution instead

  • @jeremyahagan
    @jeremyahagan 2 роки тому

    In Australia we call Ibises "bin chickens"