The Story Behind Australia's Weird Animals
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- เผยแพร่เมื่อ 29 เม.ย. 2024
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sailing south through the maze of tropical islands across Malaysia and Indonesia will lead you to an invisible barrier between two worlds. What in reality is a relatively small distance, is a huge gulf between two vastly different ecological regions. Why are the animals so different on either side of this line?
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A recent study has shown multituberculates produced developed young. Also, Deltatheridium and Thylacosmilus aren't marsupials but related metatherians
Goth Light Media
do you live in Frankfurt?? recognised that U4 at the immediately haha.
Thanks for the awesome vid !!
@mothlightmedia1936 What is the best way to contact you for other sponsorship opportunities?
Always a refreshing treat to see a video about Australian wildlife that isn’t rife with sensationalism.
Agreed!
Or crocodiles in wildlife parks out of their region so they can't react quickly lol
8:39 man, tasmanian tigers were so beautiful. didn't realize footage existed
They became extinct in the 1930's; the footage is from Hobart's (Tasmania) Beaumauris Zoo, now closed.
overrated.
@@rizkyadiyanto7922 id trade you for a Tasmanian tiger
The grainy footage existed for many years and was only recently remastered and colorized.
Wake up new moth light media dropped
am up, am up
AHHHH
I miss the intro!
Hold on I need to pee first
Hold my beer MLM is up.
Australia is truly a weird place
And we still love it. From a distance.
But Australia thinks the rest of the world is weird
@@ecurewitzWe as well as the rest of the world find the US weird lol
Kangaroo tail has a lot of meat 🍖 😳😅.
As are some of its Human inhabitants. 😎 👍
Apart from the monotremes, the weirdest creatures in Australia are the birds, but for some reason they don’t seem to attract much attention. Australian birds are exceptional in many ways.
Have you read the book:
Where Song Began, by Tim Low?
Yeah, people talk about the big ones (Emus and Cassowaries) a lot, but not a lot about kookaburas, australian magpies, and various other birds that are unique there.
The main ways being how not like birds they sound.
Very Vocal!
I am very happy that you’re being sponsored! I have always wondered how such a large continent‘s fauna and flora remained so isolated, even though there were potential land bridges in the past
Sometimes, I wish the continents were more disconnected.
A world full of Australias would give so many different animal groups a stage to diversify.
Imagine a continent dominated by monotremes or only rodents.
I love every video. From the voiceover to the production they are brilliant. I clicked after 29 seconds:D
Rodents, carried by men on ships, would soon conquer all.
Imagine if every continent but 1 are dominated by diversed version of 1 species we know today.
Sounds like a video game world to me.
XD
@@stevenkelby2169As well as our dogs and cats, and of course us.
Raise the sea levels!
South america was so much more unique before it joined north america. HUmans killing off all its unique megafauna didnt help either
A 20 minute MLM episode? And it's only Tuesday??!! Truly we are blessed
That was a pretty sick wombat. They are badly affected by endemic mange, introduced with European settlement. It kills them eventually.
I love when Monito del Monte is mentioned
Aw sweet!
MothLightMedia talks about subjects I never stopped to think about
New World marsupials (opossums) are so interesting. Once you reach central Mexico, more or less, there are more species & genera present than only the common Virginia opossum. So they blend in a lot more, I think, than here in the US, where people call them “giant rats” and stuff. 🙄Yeah, a giant rat with a pouch and 75 teeth instead of gnawing buck teeth…lol.
They’re so misunderstood. I wanted one as a pet as a kid. And in a way, nearly got one! Not really. But on my seventh birthday, something told me to look out into the backyard; I watched as a female opossum, with five babies on her back, came clambering down the tree and proceeded to walk RIGHT UP to my window (on the ground floor). Keep in mind my family has had at least three cats at all times, too, which apparently were gone at that time. I was so shocked that this mama opossum would walk up, lay down and take a nap with her babies, RIGHT THERE in front of my window. She slept, but the babies were playing and staring at us. Best birthday gift ever. Hahaha.
That's so cute
Thank you for keeping this videos music free and soft in the ears
"Babe wake up, Moth Light Media just dropped a new vid"
said someone who doesnt have a babe
The internet has made everyone unoriginal
@@bentucker2301 both of you guys just sound like bitter people, please see a therapist
@@nkg___5172 still unoriginal. Next you're going to use the word underrated and become an even bigger cliché
@@bentucker2301 ahh high and mighty! i bet you dont even piss in a tray
Damn fine content
Keep the frequency coming!! Love your take on Paleontology and the images you use to illustrate such animals 🙌🏾
Which there was a Paleontologycon or something like that for nerds like me who find exotic animals and dinosaurs fascinating.
Do a playlist about Australia
The evolution of squirrels
Why?
Why not? That's something this person is interested in. @@angelobrinkord2204
@@angelobrinkord2204because squirrels are awesome 🐿️
@@PunishedFelix Fair enough, to each their own
Please yes do this
I am obsessed with squirrels, especially marmots and Asian giant squirrels
My relief when the original music has come back 😭 thanks Moth.
Always happy to see a new MLM video
was really happy seeing that Brilliant ad at the start, you deserve it
Such high quality documentary. Ty ❤️
Yeah rodents and bats are our only native placental mammals.
Dingoes are a strange middle ground as they arrived before European colonization
Good way of putting it.
I live here in Australia and studied ecology in Tasmania. If you ever visit I'd love to meet - I love your videos. I could show you some amazing places.
Thanks for another excellent video. Always get me thinking.
It's always a treat when I see a new Moth Light Media video in my feed.
I absolutely love the way you make your videos you're one of the best channels of this genre of video if I have the choice I watch this channel over nearly all others
Very informative. Many thanks.
Fascinating. Thank you
Great analysis. Very interesting.
Such a fully researched and wide-ranging across topics episode 🥰
love your vids, thanks for sharing.
great video as always!
Brilliant video, as always!
My FAVORITE channel to fall asleep to. I mean this in the best way. Keep it up!
Still one of the best science channel on TH-cam
Top notch educational program! You deserve more subscribers!
I got here as soon as I got the notification. 👍
God bless he has returned
holy crap i have never seen that tassie tiger video in such high resolution that is crazy
love your channel, i have tried a few other biology channels and none of them shine a light (hehe) to your top tier quality
Calming voiced, ancient fauna expert is back ^.^
Great topic of choice!
I truly enjoy your channel. Its incredibly helpful to my understanding that you give timelines, geographies, common ancestry. The full spectrum really solidifies these concepts. Wild about the ostrich and the emu lineages splitting before T Rex existed. That one is gonna sit with me. Just how many bird lineages actually made it through the KPG? Man, nature and life is so amazing.
Fascinating I've heard about the Wallace line but this really explains it
Great video. Thank you! I still miss the little intro branding, though, and would welcome its return. 😊
Mercifully within my lifetime Australia's marsupials have stopped being referred to as 'primitive' mammals
A longer video!!! Yesss
Another great video. I hope your voice is okay. Thanks for the content as always.
This is just brilliant!
It’s a good day when Moth Light drops a new video :)
Great video! It reminded me to reread the way we count by the DNA separation from a common ancestor.
Fantastic!
Great video!
Wonderful video. Probably the most interesting l have ever seen on marsupials!
awe sweet, my favourite youtuber posted
They are no more weird than giraffes, rhinoceroses, polar bears, llamas, bison or elk. They’re just different, not weird.
Oh hell yeah new video!!
Excellent!
Loved the video! Just so you know though, at 11:16 you should Emu habitat not including a lot of Victoria (that southern bit), but Emus actually come all the way down to the outer reaches of Melbourne. The only reason they're not actually on our streets is because they're pretty skittish.
I love this channel
I love learning while I sleep
Do a a video about both the evolution of the kagu and the hoatzin respectively
MOTH LIGHT MEDIA RAAAAAH
'like the philloso-raptor'
yes. aka raptor sapien.
Sparassodonts are stem-marsupials.
Please bring back the old intro screen. It was really cool, and without it your videos seem somewhat diminished.
That wombat with mange b-roll got me like 😢
I'd love to see a video on the convergent evelution kelp had with plants. I only just learned kelp aren't plants and am now obsessed with this fact
SUPER NICE
Congrats on the sponsor (If that something to be proud of?)
I think a video about the fauna of prehistoric India when it was an island subcontinent would be very interesting, it is difficult to find information about.
Interesting Stuff!!! 🦘🦤🐨
It gets weird down under.
@Andy_Hendrix... Yeah, I've really let the hair grow out too much.....sorry. 😅
Your videos give just the right amount of depth. You and some others on TH-cam give us these great pieces on animals. Please consider doing some on plants too. It’s just as interesting, and it’s an untapped niche on TH-cam. Better still, plants are very well represented in the fossil record and archaic species represented in modern flora. It wouldn’t go unappreciated ❤️
Please never stop making videos
That was awesome
Very nice tie-ins with previous episodes. Good work as always!
I would have liked if he put a link to the previous episode in the description because I usually use a client that doesn't do annotations.
Aus wildlife focus? Say no more. I'm invested.
I miss the intro!
All my homies fw Moth Light Media. We all love educational content on evolution and the history of life on planet earth. 💯💯💪🏼💪🏼
Humans can certainly ditch their young pre-birth, but certain people aren't particularly happy about it
I still miss the old intro ❤
Excellent video! Please do one about the domestication of chicken throughout different cultures.
Babe, get up. New mothlight media video just dropped
Can you do the evolution of electric eels?
Your videos kick ass!
The most fascinating aspect in the history of Marsupials (and their close Metatherian relatives) is how on earth they got to South America in the first place. Because by all accounts they weren’t there in the Cretaceous.
I have an idea regarding this, but it’s a little outside of the box. We’ve known for ages about the phenomenon of “rafting,” wherein “rafts” of trees and vegetation bring land dwelling animals to new islands and continents. It’s very wildly accepted but since such events are so rare how they happen is up to more speculation. One idea thrown around is that Tropical cyclones dislodge the vegetation during the storm surge. Indeed, the one example possibly witnessed by humans, of some Iguanas colonizing the island of Anguilla, was caused by a Hurricane. But while that might account for most dispersals, it can’t account for all of them, the Canary Islands for instance do not lie in the path of any Tropical Cyclones and given their location I have difficulty believing that would’ve been different in the past, though for the Canaries the currents are favorable for such “rafting” events in general. However storm surges are not the only thing that can sweep plants and animals out to sea, Tsunamis can do that as well. That is where I think South America’s marsupials and metatherians came from. I do not know how dangerous ground zero would have been a day or two (or a week) after the disaster, but even if it was a death zone, the vicinity, and especially the island arc directly to the south of North America, would have been relatively “safe” insofar as anywhere was in the immediate aftermath of the disaster.
Their are other reasons why I think this. The origins of the “South American Native Ungulates” or Meridiungulata, has always been controversial. At first glance they appeared to be exactly that, ungulates. However many paleontologists were absolutely convinced that most of them, but especially the Notoungulates, were Afrotherians, indeed some still cling on to that notion despite its original problems and the recent compelling evidence against it. Everyone seemed to agree that the group was a polyphyletic waste basket taxon. However this controversy was not destined to remain solely in the realm of cladistics. For more than one group of South American Native Ungulate survived into the late Pleistocene, and they have sub fossils with DNA. Since 2015, not only have the Notoungulates and Litopterns been demonstrated by DNA and collagen testing to form a monophyletic group, but they have also been proven to be genuine ungulates, pretty much blowing up the Afrotherian hypothesis of their origin (much to the distress of various ego driven paleontologists who believed that hypothesis as is always the case for these things). With the fossil record of Litopterns stretching back to the earliest Paleocene, any new theory of their origin must account for how they got to South America.
My own theory, though I am not a paleontologist, is that Laurasiatheria began diversifying well before the extinction event (just like the molecular clock says). When the asteroid struck, huge tsunamis swept across the globe, not just caused by the asteroid itself but also by the gigantic earthquakes it caused. Those tsunamis struck North America particularly hard and many animals were swept out to sea. Ironically the heat shock caused by the shower of meteors coming from the impact, often alleged to be a major killer in the extinction event, could have been less severe for anything surviving on the rafts. The rafts carried with them not just North American Marsupials and Metatherians, but also the ancestors of the South American Native Ungulates, amongst other small creatures, and maybe even some non-avian dinosaurs doomed to die through starvation and/or oxygen deprivation. Given the shear amount of sea-born debris created in the disaster, it was probably inevitable that some of it would end up on nearby South America, despite the gaping burning hole in the middle of the ocean between them. After the dust had settled in the beginning of the Paleocene the newly rafted animals underwent explosive diversification in South America, as one does in the aftermath of such a large extinction event. But the ancestors of the South American Native ungulates, despite being supposedly “superior” placental mammals, did not dominate all the niches. Instead they convergently evolved to resemble the other ungulates of North America and Eurasia, in much the same manner as the Ratites evolved flightlessness on every landmass to which they originally flew.
Correct me if I'm wrong but weren't Sparassodonts proven to be a sister clade to Marsupials? They were basal metatherians but not Marsupials
His definition of marsupial seems to encompass all of clade Marsupialiformes (which includes sparassodonts and other extinct clades) rather restricting it to the crown-group (clade Marsupialia)
Hey Moth Light,
Very interesting video, I had a question about the introduction of the dingo to Australia if you or any other commenters had some information?
I read a 2013 study which concluded that ancient people's from India migrated to Australia, arriving approximately 141 generations ago (4230 years if we assume 30 years per generation) after using 4 different methods of DNA analysis on Aboriginal Australians from the Northern Territory. The study also noted that in addition to other changes in Australia's archaeological record around this time including a change in the way plants are processed and an the introduction of microliths that this roughly coincides with the introduction of the Dingo to Australia, and that the modern Dingo is morphologically more similar to dogs from modern day India despite sharing mitochondrial DNA with South-East Asian dogs.
The study doesn't explicitly state this but it seems that one plausible hypothesis is that those people's migrating from India took dogs with them and travelled through South-East Asia where their dogs may have interbred with local dogs and picked up mitochondrial DNA from them before continuing on to Australia. This hypothesis would also offer a plausible explanation for how dingoes got to Australia which was stated to be 'a bit of a mystery' in this video. So I wanted to ask if this hypothesis is given any credence by the paleontological community or if it is unlikely for whatever reason?
Edit: the study is called Genome wide data substantiate Holocene gene flow from India to Australia and is by Pulgach et al
Really great video as usual 👌
However, there are a few things to pick up on.
Firstly, a controversial question. Should dingoes be considered native if they were introduced? It's an open debate still. 3000 years isn't long in evolutionary history, and it leads to a slippery slope calling introduced species native. Should cats and foxes be seen in the same light if only a short period of time separates their introduction with that of the dingo?
You also neglected to mention the fact that not all Australia's large native predators were extinct on the mainland at the time of dingo introduction. Both the Thylacine and 'Tasmanian' Devil were present in all but the most arid regions, rapidly disappearing as dingoes spread. Dingoes are the most likely cause of that loss, acting like an invasive species and displacing native predators (a number of other species, including koalas also undertook significant range contractions at that time). Considering these animals were spread across most of the continent, in diverse habitats from Melbourne to the Kimberly, I find climatic change a poor explanation.
Finally, the morphological convergence of Thylacines and large canids is superficial. There are a number of studies that look at the functional morphology of Thylacines, and although dingo/wolf like in shape, their jaws (and historic records) indicate thet couldn't sustain the same stresses as large canids, therefore were likely taking prey less than half their body weight. Males and females exhibited strong sexual dimorphism in size, too, indicating potential niche partitioning between sexes.
Thylacines were more like jackals and coyotes than the Eurasian Canis lupus/familiaris/dingo clade.
Indeed, and also to rewild Komodo’s dragons in Australia which it once inhabited, and Cuban crocodiles as taxon substitutes for quinkana the fully terrestrial crocodile.
20 mins, yaaaay 🎉
Now let‘s place a single pair of tigers into Australia.
We did if you're a small Australia mammal like a bettong or bilby. Feral cats are wreaking havoc here.
Well done for pronouncing "emu" correctly! :D
Man your content is SO GREAT!!!!! How come you don't have more subscribers!?!?!
Thanks for the Great info and images!!! 🙌🙌🙌🦘🐊
Sorry babe can't come over new. New moth light media just dropped
"My national bird is the Emu, and it's a pest. Also bloody delicious."
Kintamani dog breed of Bali is pretty related to dingo too.
Great video, I leaned something. So Australia saved Antarctica's wild life ? :D
2:10 I hope that poor wombat with mange got the necessary treatment 😢
Could you please do a video on the evolution of parrots?
Dank