Markella Moraitou
@markella-morait.bsky.social
60 followers 160 following 6 posts
PhD student @edinburgh-uni.bsky.social (via 🇬🇷 🇸🇪 🇵🇹 🇹🇹 🇪🇸) studying oral microbiome evolution using museum specimens 💀 #evolution #museomics #microbiome #genomics
Posts Media Videos Starter Packs
Reposted by Markella Moraitou
astrokatie.com
As a theoretical cosmologist, I'm frequently asked "what is the benefit of the work you're doing for people's lives?" Nothing I work on makes money or cures disease.

There are a few different answers one can give, at various levels of "convincing" / "actually relevant to why the work is done."

1/🧵
markella-morait.bsky.social
Many thanks to my supervisor @kguschan.bsky.social and to our collaborators at @ntlmuseumsscot.bsky.social, @nhmwien.bsky.social, RMCA Belgium, @naturalsciences-be.bsky.social, and @nhm-london.bsky.social for making this project possible!

More about wild mammal microbiomes coming (hopefully) soon!
markella-morait.bsky.social
On the other hand, dental calculus from carnivores🍖 tends to give higher yield during DNA extraction -- which is good news given that dental calculus is scarce in wild carnivores (see www.biorxiv.org/content/10.1...)
markella-morait.bsky.social
Not all dental calculus is equal when it comes to lab performance!🧬🧪
Dental calculus from herbivores🌿seems to contain enzymatic inhibitors, which can pose challenges during library preparation.
markella-morait.bsky.social
New paper out! doi.org/10.1111/1755...
Dental calculus allows us to study the oral microbiome of wild #mammals, but it's still underutilised! 🦷🦠
In this study, we recover oral #microbiome data from the dental calculus of 32 mammal species and share recommendations for future research.
#museomics
Dental calculus deposits on the teeth of a plains zebra (Equus quagga) specimen housed at the Royal Museum for Central Africa, Belgium.
markella-morait.bsky.social
Thanks to everyone who stopped by my poster for your thoughful questions, remarks and suggestions (all duly noted)!
If you didn’t get to see it and are interested in wild animal #microbiomes 🦠🦷 or #museomics 🦴🧬, I’m posting it here -- an attempt to artificially extend its lifespan! #ESEB2025
Poster presentation at ESEB 2025 Poster titled 'The Evolution of the Mammalian Oral Microbiome'
markella-morait.bsky.social
Back to office, but mentally still in Barcelona and #ESEB2025 🦎

The range of questions, approaches and study systems was fascinating -- I got plenty of inspiration for my own work and my reading list has grown quite a lot!
Reposted by Markella Moraitou
kguschan.bsky.social
Fantastic dental calculus and where to find it

Johnny Richards and team (@markella-morait.bsky.social + curators from 5 museums) survey >140 mammalian species with >1,600 specimens to understand what factors determine dental calculus formation. #aDNA #museomics
www.biorxiv.org/content/10.1...
Examples of dental calculus in different mammalian species ranked by amount from 0 (no calculus) to 3 (full incrustation)