#common marmosets

[antiqueanimals]

Brehm's Tierleben. Written by Alfred Brehm. Illustration by Gustav Mützel. 1922 edition.

Internet Archive

[sitting-on-me-bum]

Common marmosets (above, captive animals at the University of Nebraska in Omaha) are known for being highly vocal.

PHOTOGRAPH BY JOEL SARTORE, NATIONAL GEOGRAPHIC PHOTO ARK

[snototter]

A common marmoset (Callithrix jacchus) in Yorkshire Wildlife Park, UK

by John K Perry

[is-the-primate-vid-cute]

Chip and Jubilee from Monkey Haven wishing you a lovely winter season.

[markhors-menagerie]

Common marmoset (Callithrix jacchus)

One of the most distinctive new world monkeys, this marmoset is native to northeastern Brazil, but has also become an invasive species in other parts of the country. They live in a variety of wet, dry, coastal, and inland habitats. Their sharp incisor teeth are effective at gouging holes for tree gum and sap, which make up the majority of their diet, but they also eat insects, fruits, seeds, flowers, and other small animals.

[ultimate-monkey-tournament]

Round 0.5

[nugulover69]

Monki :)

and some hornbills. deranged looking birds. tiny dinosaurs

[bonefall]

i dont think people are upset that the erins "weren't creative" enough with Moonpaw, they're upset that she's just. not a chimera. thats just a longhaired tortie and they justified it with chimerism. which is extremely insensitive because chimerism is a real medical thing that can cause issues in every species, including humans for those that dont know, and thats like. a big thing.

like, yay some disability rep (depending on how they write it. it wont be good. ughh) but like. its not going to be considered a disability when it can be in some cases. they are just going to say "ohh shes so special!!" like some people say with autism in this age (the infantilization of it) and its gonna be. weirdddd

anyways. sorry for ranting in your inbox.

Hey. Woah. THIS is insensitive and I don't know where you're getting this from. NONE of the three types of natural chimerism are a disability and it is extremely rare that fusion chimerism leads to medical complications.

Do not spread misinformation about a genetic condition because you're annoyed about the writing team confusing a common tortie fur pattern with chimerism. THEIR mistake is ultimately harmless. What YOU'RE doing is stigmatizing.

Quite frankly, after seeing a bunch of posts and receiving several asks about this, I don't think half of the people who are getting mad actually know anything about chimeras. I sure as fuck hope it's just ignorance, and that you aren't out here trying to call the state of being intersex a disability.

But I can fix ignorance. No need to assume malice. I will explain what chimerism is, and why you should stop going around implying it "causes issues in every species."

Chimerism is when a single individual is comprised of cells from two or more fully fertilized zygotes. There are two BROAD types of chimerism;

Artifical

Natural

Artifical chimeras are common with the advent of modern medicine. Ever had a blood transfusion? Organ transplant? You are a chimera. Or at least were for a while.

THIS can lead to complications and can cause disability, but it's not what Moonpaw is. She would be a type of natural chimera, which in and of itself has THREE subtypes;

Micro chimerism

Blood chimerism

Fusion chimerism

Microchimerism is so common that I could make a Your Mom joke out of it. It's caused by the passage of cells between the fetus and placenta during pregnancy. Everyone who has ever been pregnant is a microchimera.

While it can lead to complications, it can also be beneficial. Pregnancy could be considered a type of temporary disability, but no one would expect disability rep from every character who had ever given birth.

Blood chimeras are common in species whose twins typically share a placenta, such as cows and marmosets, but very rare in animals like humans and cats which usually don't. It occurs when tissue between two twins is exchanged through the umbilical chord. This type of chimera often ends up with a mixed bloodtype, hence the name.

This is the cause of freemartinism in cattle, when fraternal cow twins cause a sister to share her brother's hormones and act more like a bull. A type of intersex condition, not a disability-- so I sure HOPE you aren't trying to imply THIS should be "disability rep."

And even in the other case, would you automatically expect disability rep from a character that has two blood types?? No. Just like you wouldn't automatically expect disability rep from every character that had ever been pregnant, or every character who had ever needed a blood transfusion

And lastly, the one that Moonpaw ACTUALLY is. A fusion chimera. These are created when two fully fertilized zygotes fuse into a single individual.

These are extremely rare because you can't usually TELL when an individual is a chimera. There is no obvious physical difference between the "halves," with some cases of doctors insisting that patches are just weird birthmarks. They live their entire lives with normal health problems like non-chimeras. It mostly causes complications when DNA testing results in a false negative-- because the offspring of a fusion chimera occasionally end up being their genetic nespring.

Or, the two "halves" are male and female, causing gonadal differences. These people aren't disabled, there's nothing wrong with their bodies, but they're subjected to unneccesary cosmetic surgeries as children because they are intersex.

Say it. SAY IT. INTERSEX. I N T E R S E X. IM GRABBING YOU BY THE SHIRT AND SHAKING YOU THEY ARE INTERSEX.

Can some intersex conditions cause disabilities? YES. Are intersex conditions inherently disabilities? NO. Even when you're discussing infertility as a disability, tread VERY CAREFULLY because intersex people are fighting very hard to lift the stigma over their bodies.

Speak with care. Do not equate being intersex with being disabled. They are two different things.

You can be both and sometimes one could contribute to the other, but BEING intersex IS NOT a disability.

VERY rarely, even MORE rare than standard chimeras which are already very very rare and massively underreported because they are so unremarkable, a fusion chimera will happen LATE in utero. THIS can contribute to a chronic autoimmune condition where the cells reject each other, which is a disability.

And by rare I mean one case. Literally one. Of the 50 reported fusion chimeras in the review I'm referencing, Taylor Muhl was the only one with this. 4 were discovered via congenital abnormalities (unknown if connected to the chimerism b/c they were only tested because something was already wrong), 17 had fertility issues, and the remaining 28 didn't report immune conditions or birth defects but INTERSEXUALITY.

ANOTHER condition is often lumped in with chimerism, by people who do not know what chimerism is, which is mosaicism. Mosaicism, when there are two different sets of genes resulting from the same zygote, is NOT chimerism. MOSAICISM can be a cause of disability. CHIMERISM is usually not.

(Read the review in depth, as it includes mosaic cases for the sake of completion.)

They can both be fertilization errors, but are not the same thing. Follow me, I'm only going to woefully simplify a complicated topic once,

CHIMERA = Two zygotes in one body

MOSAIC = Two bodies in one zygote

CHIMERA = usually fine

MOSAIC = usually bad

And the last possible places you could be getting the idea that chimerism "causes disability" from, to my knowledge, is 1. This study that says the loss of a twin in early pregnancy increases the chance of congenital defects in the survivors (has barely anything to do with chimerism, this link is tangential, vanishing twin syndrome does not necessarily mean it was absorbed by its sibling)

Or, 2, this study of several animals where they correlated rates of benign tumors to % of chimerism based on SPECIES. BLOOD chimeras. It's COWS AND MARMOSETS AGAIN. The study ITSELF calls for further targeted research of chimerism cause of susceptibility to cancer.

It couldn't even link new growths or malignant tumors to chimerism in the mammals of its study. WE'RE mammals.

Correlation does not equal causation. Statistics 101.

So no. That's not "a big thing." Chimerism is fine, they're just very likely to be intersex if they're a fusion chimera of a male and a female zygote. Do not imply intersexuality is a disability. Please get mad about the actual ableism in the series, not the team being clueless about tortie patterns.

Also everyone say you're sorry to intersex Moonpaw. I better see you people making intersex Moonpaw pride flag edits as penance IMMEDIATELY.

UPDATE: Anon apologized! Growth! I still think this is an important post, especially in the context of the wider fandom conversation, so I'm leaving it as-is. Please feel free to reblog.

UPDATE 2: Clarification on infertility as a disability because I didn't word myself very well in one section!

[kaonarvna]

About a week ago I had the desperate urge to go to an aquarium, after well over a decade of zero interest whatsoever. So today my partner and I took a little day trip to one not too far away!

Got there AT OPENING, and the car park was packed, school holidays and all. We appeared to be the only pair of childless grown men there, but that's perfectly fine! They had little foot stools at the entrance for parents to bring with them, to help their little ones see better. Very sweet. Love to see it.

Naturally I took a sketchbook with me! I don't draw from life enough, let alone creatures that are actively in motion. I expected to have a lot more difficulty with the fish, but, strangely enough, they seem to want to watch you just as much as you want to watch them.

The Pacu (tambaqui!) were in a massive tank probably four or five meters in diameter, with a handful of massive, meter-long catfish and some rays in there with them. They swam around the perimeter in a long train, so we had continuous moving reference.

The rays seemed just as interested in me as I was in them. Little guys would go right up to the edge of th glass to check you out. While I imagine they're accustomed to seeing loads of children, I'd imagine sustained attention from someone sat there for a few minutes isn't too common.

There were LOADS of turtles, all rescues from the exotic pet trade. The rays, pacus, and catfish were also rescues. People not realising just how big they'll become and all. Took all my self restraint not to reach out and touch the turtles. ALL my restraint. So so tempting.

I didn't expect monkeys, but there were absolutely butt loads of marmosets in a big enclosure full of enrichment. Plants, ropes, bridges, trees, rocks, the whole nine yards. I think we were the first ones to get to them today, as we were alone with them, and got a fair bit of prolonged eye contact by the glass. Little guy I ended up sketching paused feasting to stare at me, and I stared back, of course.

Two big ol reef sharks were doing laps in a tank with a tunnel going through, along with the moray, the mullet, and oodles more. Huge, huge tanks.

Most importantly there were SEALS! And a wee seal hospital. They had three little ones there, all named for fruit. They were all resting, big squishy potatoes. "Raspberry" sat up and stared at us with those big black eyes for a hot minute, and flopped over to the glass to check us out. Big amorphous mammal blobs. I love em, I do.

All in all, 10/10 good day trip. Good aquarium. Seems to be (for the most part) doing rescue, restoration, and education work. I always worry a little, with zoos/aquariums/anything with animals on display whether it's,,, slimy. But this place felt good, couldn't taste any chlorine or nastiness in the air, always a good sign! Good day out.

[monkiemp3]

Cremita [Vivo S/I] Ref

He's a common marmoset and Vivo's trans boyfriend <3

[primate-tournament]

🦍The primate tournament list of candidates has been finalised! Polls will start going up soon!🦧

Thank you to everyone who submitted a species! Here is the full written list:

Basal primates (non-simian primates, including Strepsirrhini and Tarsiiformes)

†Notharctus (Notharctus tenebrosus)

Calabar angwantibo (Arctocebus calabarensis)

West African potto (Perodicticus potto)

Red slender loris (Loris tardigradus)

Bengal slow loris (Nycticebus bengalensis)

Pygmy slow loris (Xanthonycticebus pygmaeus)

Senegal bushbaby (Galago senegalensis)

Brown greater galago (Otolemur crassicaudatus)

Ring-tailed lemur (Lemur catta)

Verreaux’s sifaka (Propithecus verreauxi)

†Archaeoindris (Archaeoindris fontoynontii)

†Megaladapis (Megaladapis madagascariensis)

Madame berthe’s mouse lemur (Microcebus berthae)

Aye-aye (Daubentonia madagascariensis)

Philippine tarsier (Carlito syrichta)

Pygmy tarsier (Tarsius pumilus)

New world monkeys (Platyrrhini)

Wied’s marmoset (Callithrix kuhlii)

Goeldi’s marmoset (Callimico goeldii)

Bearded emperor tamarin (Saguinus imperator subgrisescens)

Golden-headed lion tamarin (Leontopithecus chrysomelas)

Panamanian white-faced capuchin (Cebus imitator)

Central American squirrel monkey (Saimiri oerstedii)

Gray-bellied night monkey (Aotus lemurinus)

Bald uakari (Cacajao calvus)

Madidi titi monkey (Plecturocebus aureipalatii)

Atlantic titi monkey (Callicebus personatus)

Black bearded saki (Chiropotes satanas)

White-faced saki (Pithecia pithecia)

Colombian red howler (Alouatta seniculus)

Brown spider monkey (Ateles hybridus)

Northern muriqui (Brachyteles hypoxanthus)

Yellow-tailed woolly monkey (Lagothrix flavicauda)

Old world monkeys (Cercopithecidae)

Mantled guereza (Colobus guereza)

Zanzibar red colobus (Piliocolobus kirkii)

Nepal gray langur (Semnopithecus schistaceus)

Silvery lutung (Trachypithecus cristatux)

Golden snub-nosed monkey (Rhinopithecus roxellana)

Proboscis monkey (Nasalis larvatus)

Red-shanked douc (Pygathrix nemaeus)

Collared mangabey (Cercocebus torquatus)

Japanese macaque (Macaca fuscata)

Rhesus macaque (Macaca mulatta)

Hamadryas baboon (Papio hamadryas)

Mandrill (Mandrillus sphinx)

Gelada (Theropithecus gelada)

Common patas monkey (Erythrocebus patas)

Bale mountains vervet (Chlorocebus djamdjamensis)

De brazza’s monkey (Cercopithecus neglectus)

Apes (Hominoidea)

Lar gibbon (Hylobates lar)

Pileated gibbon (Hylobates pileatus)

Kloss’s gibbon (Hylobates klossii)

Northern white-cheeked gibbon (Nomascus leucogenys)

Siamang (symphalangus syndactylus)

†Junzi (Junzi imperialis)

Bornean orangutan (Pongo pygmaeus)

†Gigantopithecus (Gigantopithecus blacki)

†Dryopithecus (Dryopithecus fontani)

Western lowland gorilla (Gorilla gorilla gorilla)

Chimpanzee (Pan troglodytes)

Bonobo (Pan paniscus)

†Australopithecus (Australopithecus afarensis)

†Panranthropus (Panranthropus boisei)

†Flores hobbit (Homo floresiensis)

†Neanderthal (Homo neanderthalensis)

The first set of polls will go up as soon as I have finished writing the descriptions! In the meantime, I would appreciate if you could share this tournament around- it won’t be much of a tournament if there aren’t that many people voting! In going down the research rabbit hole I’ve found so many interesting species and stories, and I promise learning about them here will be worth your time!

[crtter]

do yall have squirrels in brazil?? sorry, Im thinking about how different your city wildlife is compared to mine (racoons, squirrels and possums, mostly)

We do! There are seven species of squirrels that live in Brazilian soil. We don’t spot them in cities often, though. They mostly live in forested areas, especially in the Amazon. The only species that lives in the same state as I do to is the (aptly-named) Brazilian squirrel, but I’ve only ever seen them in trips to the shore or the countryside. They’re not that different from grey squirrels tbh!

I live in São Paulo, which is the largest Brazilian city so it’s not super common to see a whole lot of city-dwelling animals that aren’t the hyper successful introduced species you’ll find in most big cities around the world (rats, pigeons, house sparrows and the like) but there are a few native cool critters I see quite often! The number one are capybaras, which live near literally every single large body of water in the city, be it natural or manmade. They’re about the size of large dogs, very cute and completely unbothered by human presence.

I also see marmosets pretty often! They’re our “squirrels”, so to speak, so it’s not rare for me to spot them walking over telephone lines or on top of roofs. I spotted a mom carrying a little baby on her back on the tree I have on my front lawn just the other day. 

Funnily enough, marmosets technically aren’t native to my state. They’re Brazilian animals but they come from the north of the country. The ones we have here are the descendants of escaped pets that thrived in the wild. We have white-tufted marmosets, black-tufted marmosets and grey-tufted hybrids between the two species! I believe the ones that live next to my house are hybrids. I see white-eyed parakeets almost every single day! They’re easy to recognize because of their bright green feathers. I always see them flying around in groups while making noise. They never come too close to my house but that’s the ideal, really, because I don’t want my cats to try and hunt them.

I don’t see them THAT often but I’ve seen them often enough to know that there’s a sizeable population of opossums here as well! While there are lots of opossum species in Brazil, the most common ones in my state are the big-eared opossum and the white-eared opossum but I’ve only ever spotted the white-eared opossum, which are my favorite animals ever. Our opossums do sometimes play dead just like Virginia opossums, but they also tend to release a stinky smell from scent glands they have in their armpits if you startle them.

[sitting-on-me-bum]

Practicing crying: How do human newborns know how to cry? If they’re anything like our primate cousins the common marmosets (above), they may be practicing before they leave the womb. New research shows marmoset fetuses began making cry-like facial expressions nearly two months before birth.

PHOTOGRAPH BY JOEL SARTORE, NATIONAL GEOGRAPHIC PHOTO ARK

[apeshit]

sorry its so many options i just love so many i wanted to mention many

[is-the-primate-vid-cute]

A lovely Christmas day to all those who celebrate🎄⭐

[william-askton-1932]

Here's a list of animal species that have homosexuality in them

Baboon

Bison

Bonobo

Brown bear

Brown Rat

Cavy

Caribou

Cat (domestic)

Cattle (domestic)

Chimpanzee

Common dolphin

Common marmoset

Dog

Dolphin

Elephant

Fox

Giraffe

Goat

Horse (domestic)

Human (Homo sapiens)

Humpback whale

Koala[40]

Lion[36]

Orca[27]

Panda

Wolf

And those are just the mammals

Well at least RABBITS know better.