Gerben Debruyn
@gdebruyn.bsky.social
22 followers 22 following 10 posts
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Reposted by Gerben Debruyn
jessica-dobson.bsky.social
Super happy to share the first chapter of my PhD, published in the Journal of the Royal Society Interface ✨🐀 royalsocietypublishing.org/doi/10.1098/...
Iridescence in mammals is not as rare as we thought, but it’s all created in the same way!
Rainbow-like colours in the fur of a tropical rat (Otomys tropicalis)
gdebruyn.bsky.social
Some stick-friends.
gdebruyn.bsky.social
Yesterday I had the pleasure of presenting our research on phasmid eggs at the international stick insect meeting organized at the Royal Belgian Institute of Natural Sciences. A big thanks to the organizers for the opportunity and creating such an amazing event!
Reposted by Gerben Debruyn
wybouw.bsky.social
Wonderful opening talk on phasmid egg colouration by @gdebruyn.bsky.social at the yearly International Stick Insect Meeting.
Gerben presents his work on phasmid egg colouration.
Reposted by Gerben Debruyn
jgoldenbergevo.bsky.social
🧵 1/ New study on squamate color evolution hits the press: we show that brightness variation in lizards & snakes is strongly linked to habitat openness 🌞 This reveals how ecological pressures drive color evolution in one of the most diverse groups of tetrapods www.nature.com/articles/s41...
Reposted by Gerben Debruyn
aukeflorian.nl
In the final stretch of my PhD thesis on nests, I keep thinking about this pigeon's masterpiece. It doesn’t have to be perfect, just done. Let’s do this! 🐦🪶

#PhD #PhDsky 🧪
A pigeon sitting beside its simple nest—just a few twigs, nothing fancy, but it works. One egg rests inside, soon the city will welcome another little pigeon to its flock.
Reposted by Gerben Debruyn
jgoldenbergevo.bsky.social
This is a major collaborative effort, involving 8 countries across 3 continents 🌎🌍🌏
Reposted by Gerben Debruyn
gdebruyn.bsky.social
After the extinction of non-avian dinosaurs, mammals may have been free to diversify into the wide array of colors, from red pandas, to grey koalas, and striped tigers!
🧵(6/6) picture credits to
@michaelnicolai.bsky.social
and André Zambolli!
gdebruyn.bsky.social
The fossils that we studied are extinct mammals with distinct life style, from living on ground, to swimming, and gliding through the treetops like modern day flying squirrels.
🧵(5/6)
gdebruyn.bsky.social
While modern mammals had a wide variety in melanosome shapes, all of the fossils had relatively large and long shaped melanosomes that our models predicted would produce dark colors!

🧵(4/6)
gdebruyn.bsky.social
We were able to determine the color thanks to the pristine fossilization of the hairs and melanosome pigments! Their shape and size was preserved in rock, and we found that, in living mammals, these shapes correlate with their color!
🧵(3/6)
gdebruyn.bsky.social
Mammals evolved in the shadows of dinosaurs, where small and nocturnal habits helped them avoid larger predators! However, almost nothing was known about their coloration, which can influence their ability to camouflage!

🧵(2/6) Picture by Jonathan Goldenberg
!
gdebruyn.bsky.social
We are very excited to share our new paper in Science! We show that a diverse group of Jurassic and Cretaceous mammals all had darkly-colored fur.

Well how did we do this? Let' start at the beginning!
🧵 (1/6) @science.org
gdebruyn.bsky.social
In our newest paper we highlight the similarities and differences in biomineralization patterns of different animals eggshells!
pubs.rsc.org/en/Content/A...