#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

[arthistoryanimalia]

#MonkeyDay:

Portrait of Cardinal Antonio Ciocchi del Monte (1461-1533) by Sebastiano del Piombo (1485/86-1547), c. 1512-5, in the National Gallery of Ireland collection (NGI.783).

His pet monkey is identifiable as a Common Marmoset (Callithrix jacchus), native to northeastern Brazil. Neotropical primates were unknown to Europeans before 1492; this may be the earliest example of one in a European painting.

[petrichoremojis]

Hi! If requests are still open, can I request a common marmoset monkey? Or a monkey in general, if that is too specific?

[ID: A digital drawing of a common marmoset. End ID]

This... is not very good, and I'm sorry. I couldn't figure out how to get the shape right, nor the fur pattern.

[thoughtlessarse]

A marmoset dangles upside down by its hind legs while eating a banana in Forte Duque de Caxias, Rio de Janeiro, Brazil - Photograph: Bob Karp/Zuma Press Wire/Rex/Shutterstock

Click source for more Week in Wildlife photos.

[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

[ameera-ameera]

[ID: Drawing of a common marmoset, a small black monkey with a white face and white ear-puffs. /end ID]

Common marmoset By: John Markham From: Living Mammals of the World 1969

[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!

[hijab-described]

[ID: A doodle of a Common Marmoset wearing a green hijab, and loose-cut green shirt and pants. Her white ear-puffs are sticking out of the hijab. She stands upright like a human. /end ID]

Drew this little cutie during a meeting today. Muslim Marmoset Monkey~

[sitting-on-me-bum]

Common marmoset - Brazil

Photo by Emmanuel Cassar on Unsplash

[bjekkergauken]

Inktober day 11-15. Malayan zebra, common marmoset, pied kingfisher, clown triggerfish, Rambur's pied shieldbug

[monkiemp3]

Cremita [Vivo S/I] Ref

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

[marmosetsandmarxism]

thought id lay down some little facts about me for newcomers so they can know me better <3

my names abi/ven, call me what you prefer im not fussed at all! my pronouns are they/them, im an nb transfem. im a vegan and a vegan/animal liberation activist!

im a comrade from england, organised in the communist party of britain, and my biggest inspirations as a marxist-leninist are vladimir lenin, fred hampton, and kim il-sung!

as my name also states, im a huge enthusiast of marmoset monkeys, im very passionate about their conservation, and an end to the primate pet trade across the world. if you were wondering, my favourites tend to sway depending on my mood but i absolutely adore common, black tufted, and goeldis marmosets any day of the week!

along with marmosets and marxism, i have many more interests and passions, they just arent the focus of this blog! my interests include literature (poetry and all non-fiction), music (goth rock, rap, indie, and rnb primarily, but i enjoy absolutely everything), fashion (i love suits, formal wear and early soviet fashion), and physical art (performative art, contemporary displays, canvas, you name it)!

i hope you stick around and enjoy what i put out <3