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Quentin Martinez

@quentinwildlife.bsky.social

140 followers 100 following 66 posts

Post-doc researcher and Wildlife Photographer. Evolution of olfactory systems using integrative approaches. Frog lover 🐸 quentinmartinez.fr

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Quentin Martinez @quentinwildlife.bsky.social · Jul 7

A 45-million-year-old cetacean brain exhibits prominent olfactory regions, indicating that early whales retained a sense of smell 🐳🧠
academic.oup.com/evolut/advan...

@smnstuttgart.bsky.social

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Reposted by Quentin Martinez

Raphael Moreno @stereospondyl.bsky.social · 7d

After two years of hard work, I’m proud to announce that our new special exhibition @smnstuttgart.bsky.social is now open for the public – Meet Triassic Life: Dawn of the world of reptiles (1/7).

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Quentin Martinez @quentinwildlife.bsky.social · 12h

Merci Fred ;)

Quentin Martinez @quentinwildlife.bsky.social · 12h

Merci Benoit ;)

Quentin Martinez @quentinwildlife.bsky.social · 4d

The noise is so deafening you need earplugs, and the frogs are so frenzied that they completely ignore your presence, leaping in every direction! It was truly one of the most extraordinary naturalist events I have ever had the chance to witness.

Quentin Martinez @quentinwildlife.bsky.social · 4d

The hypothesized evolutionary strategy behind this behavior is to overwhelm predators through sheer numbers. This photo shows only a small fraction of the actual scene—but imagine thousands of frogs all around you, covering the ground, the trees, and the pond.

Quentin Martinez @quentinwildlife.bsky.social · 4d

Amid this chaotic night, many frogs mate with the wrong species, some even eat other frogs, and numerous predators arrive to take advantage of the abundance of prey.

Quentin Martinez @quentinwildlife.bsky.social · 4d

This event usually lasts only a single night, during which some rare species join the frenzy—species that are often seen only on that occasion.

Quentin Martinez @quentinwildlife.bsky.social · 4d

Explosive breeding is the name of a rare phenomenon in which frogs aggregate to reproduce in the same place at the same time. Once a year, in certain ponds, tens of thousands of frogs gather to reproduce in a spectacular concert.

Quentin Martinez @quentinwildlife.bsky.social · 4d

Thrilled to have won the Amphibians and Reptiles category of the prestigious Wildlife Photographer of the Year and to be able to share this fascinating frog behavior! #wpy61 #frogs #herpetology www.quentinmartinez.fr

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louiseheitzmann.bsky.social @louiseheitzmann.bsky.social · Sep 24

🎉 PAPER OUT ! Happy to see another chapter of my PhD out in #MBE ! The African pygmy mouse flips the script on sex determination. Its multiple sex and neo-sex chromosomes 🤯 shape brain transcriptomes and drive sexual polymorphism, reflecting new evolutionary trajectories for sex-linked regions.

Molecular Biology and Evolution @molbioevol.bsky.social · Sep 23

Heitzmann et al. compared brain transcriptomes of four sexual genotypes of the African pygmy mouse, showing how sex and neo-sex chromosomes impacted transcriptomes to reflect their transmission mode, evolutionary trajectories, and genomic conflicts.

🔗 doi.org/10.1093/molbev/msaf208

#evobio #molbio

MBE | Influence of Gonadal and Chromosomal Sex on the Brain Transcriptome in a Mouse Species with Natural Sex Reversal

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Reposted by Quentin Martinez

Ivan Manzini @xenofrog.bsky.social · Aug 22

🚨 We are looking for 2 PhD students! 🧠🐸👃

Join the Manzini Lab @jlugiessen.bsky.social to explore the olfactory system in #aquatic #vertebrates.

We mainly use #amphibians, combining:
🔬 Imaging
👩‍🔬 Cell biology
🐝 Behavior

👉 bit.ly/neurophd
🌍 bit.ly/manzinilab

Please share!

#PhD #neuroscience #job

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Reposted by Quentin Martinez

Rafaela Missagia @rmissagia.bsky.social · Sep 4

Our paper on rodent thumbnails is out! Big team effort, powered by museum collections. Turns out, nails can reveal a lot about rodent evolution. Shoutout to Dr. Gordon Shepherd for the wild idea to study rodents thumbs!

Science Magazine @science.org · Sep 4

New findings in Science suggest that rodents owe much of their evolutionary success to their thumb-nail (the first digit, D1), an adaptation that gave them dexterous hands for cracking seeds and nuts.

Learn more in this week's issue: https://scim.ag/46caVho

This red squirrel’s hands display tiny nail-bearing thumbs, alongside large claw-bearing digits.

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Reposted by Quentin Martinez

Nature @nature.com · Sep 3

A common type of ant in Europe breaks a fundamental rule in biology: its queens can produce male offspring that are a whole different species

go.nature.com/4mOb5T9

‘Almost unimaginable’: these ants are different species but share a mother

Ant queens of one species clone ants of another to create hybrid workers that do their bidding.

go.nature.com

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Anne-Claire Fabre @grumpydrfabre.bsky.social · Aug 5

Huge congratulations to Isabelle Toussaint-Lardé on publishing the first paper of her PhD! 🎉

Ever wondered whether paedomorphic species change their feeding strategies from larval to adult stages? Is adulthood in axolotls just an illusion? 🧠👀

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Stephan Spiekman @stephanspiekman.bsky.social · Jul 23

I am proud and grateful to present a dream project today in @nature.com www.nature.com/articles/s41...

Meet #Mirasaura grauvogeli, a #wonderreptilewith skin appendages that rival feathers and hairs, challenging our view of reptile #evolution🪶🦎

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Priscila Rothier @priscilarothier.bsky.social · Jul 11

Thrilled to share our new paper out in BMC, part of my postdoc at @cornellvet.bsky.social! 🐘🐀
We found that larger mammals evolve more diverse morphologies, while smaller ones can explore many locomotor strategies without much change to their forelimbs.
bmcecolevol.biomedcentral.com/articles/10....

Body mass evolution as a driver of morphological and ecological diversity in terrestrial mammals - BMC Ecology and Evolution

Body mass plays a fundamental role in the macroevolutionary dynamics of morphological, ecological, and phylogenetic diversification. Given biomechanical principles, large body masses in terrestrial ve...

bmcecolevol.biomedcentral.com

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Quentin Martinez @quentinwildlife.bsky.social · Jul 7

You can find the accompanying models on MorphoMuseuM here: morphomuseum.com/articles/vie...

Quentin Martinez @quentinwildlife.bsky.social · Jul 7

This study is the result of Elena Berger’s Bachelor’s thesis, conducted in collaboration with @eliamson.bsky.social @hesham-sallam.bsky.social @gohar.bsky.social @gsferreira.bsky.social and many other co-authors. Thanks to Tyler Stone @tylerstoneart.bsky.social for the nice reconstruction!

Quentin Martinez @quentinwildlife.bsky.social · Jul 7

Regarding the sense of smell, we basically found that no part of the olfactory apparatus was significantly reduced, indicating that these amphibious cetaceans most likely had a good nose, and that the reduction of this sense most likely came later in their evolution.

Quentin Martinez @quentinwildlife.bsky.social · Jul 7

Comparing the relative volume of the brain endocast, we found that this early whale was quite brainy, which is a surprise, as the first cetaceans with big brains were so far understood to be the fully aquatic basilosaurids.

Quentin Martinez @quentinwildlife.bsky.social · Jul 7

We addressed two aspects of cetacean evolution: their acquisition of a relatively big brain and the evolution of their sense of smell. As other mammals secondarily adapted to the aquatic environment, cetaceans have been assumed to reduce their sense of smell.

Quentin Martinez @quentinwildlife.bsky.social · Jul 7

We ct-scanned the skull of Protocetus atavus, an amphibious cetacean coming from the Mokattam Formation in Egypt. The inner anatomy of the skull was reconstructed, and we were able to reconstruct the brain imprint (endocast) as well as the different components of the nasal cavity

Quentin Martinez @quentinwildlife.bsky.social · Jul 7

A 45-million-year-old cetacean brain exhibits prominent olfactory regions, indicating that early whales retained a sense of smell 🐳🧠
academic.oup.com/evolut/advan...

@smnstuttgart.bsky.social

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Reposted by Quentin Martinez

Eli Amson @eliamson.bsky.social · Jul 2

Fossil brain 🧠🧟 of a 45-million-year-old cetacean! We are proud to publish‪ @journal-evo.bsky.social l the result of Elena Berger’s Bachelor’s thesis @smnstuttgart.bsky.social. Thread 👇
‬

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Gabriel S. Ferreira (he/his) @gsferreira.bsky.social · May 30

🚨🚨PhD position alert!🚨🚨
Do you like 🐢🐢? Or ecomorph evolution? I am offering a 36-month PhD position funded by the DFG about ecomorphology and neuroanatomy of turtles. Check out the ad here: www.senckenberg.de/en/career/sc...

Please share and if you have questions, send me a message 😉

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