Frederic Delsuc
@freddelsuc.bsky.social
Evolutionary biologist at CNRS - ISEM - University of Montpellier - Phylogenomics - Mammals - Convergence - Microbiome
Pinned
Frederic Delsuc
@freddelsuc.bsky.social
· Feb 25
New @erc.europa.eu funded #ConvergeAnt preprint on using the evolution of pseudogenes to document the parallel regression of oral anatomy in myrmecophagous mammals posted at @biorxiv-evobio.bsky.social
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Frederic Delsuc
Retour sur quatorze années de recherche sur la #biodiversité #tropicale d'Amazonie avec le Centre d’Etude de la Biodiversité Amazonienne (Labex #CEBA) 😍 - Un grand merci à Jerôme Chave et tous les autres acteurs du LabEx! anr.fr/fr/actus/det...
Plongée au cœur de quatorze années de recherche sur la biodiversité amazonienne avec le laboratoire d’excellence (Labex) CEBA (Centre d’Etude de la Biodiversité Amazonienne)
La Guyane est un laboratoire naturel idéal pour étudier la biodiversité tropicale. Depuis 14 ans, le Labex CEBA, basé en Guyane française et porté par le CNRS, cherche à comprendre l’origine et le mai...
anr.fr
November 4, 2025 at 7:21 PM
Retour sur quatorze années de recherche sur la #biodiversité #tropicale d'Amazonie avec le Centre d’Etude de la Biodiversité Amazonienne (Labex #CEBA) 😍 - Un grand merci à Jerôme Chave et tous les autres acteurs du LabEx! anr.fr/fr/actus/det...
Reposted by Frederic Delsuc
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
October 20, 2025 at 2:45 PM
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
Reposted by Frederic Delsuc
Cross-species cloning in ants 🐜
These two males belong to different species—but share the same mother. How? Why?
To celebrate the print release of our last paper in this week’s @nature.com (issue 8084), here’s a thread summarizing the results. Why? Let’s dive in🧵👇 www.nature.com/articles/s41...
These two males belong to different species—but share the same mother. How? Why?
To celebrate the print release of our last paper in this week’s @nature.com (issue 8084), here’s a thread summarizing the results. Why? Let’s dive in🧵👇 www.nature.com/articles/s41...
October 14, 2025 at 12:00 PM
Cross-species cloning in ants 🐜
These two males belong to different species—but share the same mother. How? Why?
To celebrate the print release of our last paper in this week’s @nature.com (issue 8084), here’s a thread summarizing the results. Why? Let’s dive in🧵👇 www.nature.com/articles/s41...
These two males belong to different species—but share the same mother. How? Why?
To celebrate the print release of our last paper in this week’s @nature.com (issue 8084), here’s a thread summarizing the results. Why? Let’s dive in🧵👇 www.nature.com/articles/s41...
Reposted by Frederic Delsuc
Preprint Alert! 🦥
We produced complete genomes for 2 Xenarthra and placed them in a mammalian comparative framework. We found that Xenarthra harbour the largest number of retrocopies in mammals! www.biorxiv.org/content/10.1...
We produced complete genomes for 2 Xenarthra and placed them in a mammalian comparative framework. We found that Xenarthra harbour the largest number of retrocopies in mammals! www.biorxiv.org/content/10.1...
Retrocopy formation and domestication shape genome evolution in sloths and other xenarthrans
Xenarthrans, comprising sloths, anteaters, and armadillos, represent one of the most morphologically and physiologically specialised mammalian clades, yet the genomic basis of their adaptations remain...
www.biorxiv.org
October 2, 2025 at 9:16 PM
Preprint Alert! 🦥
We produced complete genomes for 2 Xenarthra and placed them in a mammalian comparative framework. We found that Xenarthra harbour the largest number of retrocopies in mammals! www.biorxiv.org/content/10.1...
We produced complete genomes for 2 Xenarthra and placed them in a mammalian comparative framework. We found that Xenarthra harbour the largest number of retrocopies in mammals! www.biorxiv.org/content/10.1...
Reposted by Frederic Delsuc
Reposted by Frederic Delsuc
Another record month for bioRxiv - and further evidence the pandemic spike+dip was just that and growth continues. Thanks to all involved and that includes 🫵
October 1, 2025 at 3:51 PM
Another record month for bioRxiv - and further evidence the pandemic spike+dip was just that and growth continues. Thanks to all involved and that includes 🫵
Reposted by Frederic Delsuc
What have 🦷🦷 #TEETH 🦷🦷, 🥛 #MILK 🥛, and💧💧 #SALIVA 💧💧to do with each other? Ask PetarPajic, Luane Landau, and Omer Gokcumen @gokcumenlab.bsky.social ❗️
academic.oup.com/gbe/article-...
academic.oup.com/gbe/article-...
Saliva Protein Genes in Humans were Shaped During Primate Evolution
Abstract. Genes within the secretory calcium-binding phosphoprotein locus diversified along with the formation of a calcified skeleton in vertebrates, the
academic.oup.com
September 27, 2025 at 12:43 AM
What have 🦷🦷 #TEETH 🦷🦷, 🥛 #MILK 🥛, and💧💧 #SALIVA 💧💧to do with each other? Ask PetarPajic, Luane Landau, and Omer Gokcumen @gokcumenlab.bsky.social ❗️
academic.oup.com/gbe/article-...
academic.oup.com/gbe/article-...
Reposted by Frederic Delsuc
Awesome new paper by @lucalivraghi.bsky.social et al.
doi.org/10.1016/j.cu...
in @currentbiology.bsky.social
on the evo-devo of a butterfly color variation
enjoy the show!
doi.org/10.1016/j.cu...
in @currentbiology.bsky.social
on the evo-devo of a butterfly color variation
enjoy the show!
April 14, 2025 at 2:53 AM
Awesome new paper by @lucalivraghi.bsky.social et al.
doi.org/10.1016/j.cu...
in @currentbiology.bsky.social
on the evo-devo of a butterfly color variation
enjoy the show!
doi.org/10.1016/j.cu...
in @currentbiology.bsky.social
on the evo-devo of a butterfly color variation
enjoy the show!
Reposted by Frederic Delsuc
Targeted ortholog search in unannotated genome assemblies with fDOG-Assembly https://www.biorxiv.org/content/10.1101/2025.09.19.677253v1
September 22, 2025 at 12:07 AM
Targeted ortholog search in unannotated genome assemblies with fDOG-Assembly https://www.biorxiv.org/content/10.1101/2025.09.19.677253v1
Reposted by Frederic Delsuc
Sujet de stage M2 sur la "dock mussel", cet écotype de moules hybrides qui habite dans les ports. L'objectif est de tester si la dock mussel s’est adaptée grâce à sa variance génétique d’admixture ou si l’admixture n’est que le corolaire du contact secondaire entre les deux espèces parentales.
September 17, 2025 at 6:49 AM
Sujet de stage M2 sur la "dock mussel", cet écotype de moules hybrides qui habite dans les ports. L'objectif est de tester si la dock mussel s’est adaptée grâce à sa variance génétique d’admixture ou si l’admixture n’est que le corolaire du contact secondaire entre les deux espèces parentales.
Reposted by Frederic Delsuc
🐜 Une nouvelle étude révèle un phénomène inédit dans le règne animal : certaines reines donnent naissance à des mâles d’une autre espèce. Ce mécanisme appelé « xénoparité » permet à leurs colonies de survivre.
Explications avec des GIF de fourmis ⬇️
Explications avec des GIF de fourmis ⬇️
Chez les fourmis moissoneuses, des reines enfantent des mâles d’une autre espèce
Une nouvelle étude révèle un phénomène inédit dans le règne animal : certaines reines donnent naissance à des mâles d’une autre espèce. Ce mécanisme appelé « xénoparité » permet à leurs colonies de su...
www.radiofrance.fr
September 16, 2025 at 6:13 AM
🐜 Une nouvelle étude révèle un phénomène inédit dans le règne animal : certaines reines donnent naissance à des mâles d’une autre espèce. Ce mécanisme appelé « xénoparité » permet à leurs colonies de survivre.
Explications avec des GIF de fourmis ⬇️
Explications avec des GIF de fourmis ⬇️
Reposted by Frederic Delsuc
A new Science study of ants in Fiji—involving genomic sequencing of over 4000 ant specimens from museum collections—shows that most native species have been in decline since humans first arrived in the archipelago 3000 years ago. https://scim.ag/489mI2o
Genomic signatures indicate biodiversity loss in an endemic island ant fauna
Insect populations have declined worldwide, but the extent and drivers of these declines are debated. Most studies rely on field surveys performed in the past century, leaving gaps in our understandin...
www.science.org
September 15, 2025 at 7:33 PM
A new Science study of ants in Fiji—involving genomic sequencing of over 4000 ant specimens from museum collections—shows that most native species have been in decline since humans first arrived in the archipelago 3000 years ago. https://scim.ag/489mI2o
Reposted by Frederic Delsuc
If you’ve heard about our study on ants producing two different species but are still confused about how it works (and don’t have time to read the paper), this 10-minute video made by @bengthomas.bsky.social is very informative:
www.youtube.com/watch?v=Z-O4...
Paper: www.nature.com/articles/s41...
www.youtube.com/watch?v=Z-O4...
Paper: www.nature.com/articles/s41...
The Ants That Broke Biology
YouTube video by 7 Days of Science
www.youtube.com
September 15, 2025 at 4:04 PM
If you’ve heard about our study on ants producing two different species but are still confused about how it works (and don’t have time to read the paper), this 10-minute video made by @bengthomas.bsky.social is very informative:
www.youtube.com/watch?v=Z-O4...
Paper: www.nature.com/articles/s41...
www.youtube.com/watch?v=Z-O4...
Paper: www.nature.com/articles/s41...
Reposted by Frederic Delsuc
PhD opportunity in Bodø! You’ll sequence genomes from invasive and non-invasive slug (A. vulgaris) populations to uncover the molecular basis of invasion dynamics. Supervised by Prof. Les Noble & co-supervisor by me. Fully funded, cutting-edge science, great team. Apply by Sept 21: shorturl.at/zJT06
shorturl.at
September 8, 2025 at 9:12 AM
PhD opportunity in Bodø! You’ll sequence genomes from invasive and non-invasive slug (A. vulgaris) populations to uncover the molecular basis of invasion dynamics. Supervised by Prof. Les Noble & co-supervisor by me. Fully funded, cutting-edge science, great team. Apply by Sept 21: shorturl.at/zJT06
Reposted by Frederic Delsuc
How many chromosomes can an animal have?
In our paper out now in @currentbiology.bsky.social we show that the Atlas blue butterfly has 229 chromosome pairs- the highest in diploid Metazoa! These arose by rapid autosome fragmentation while sex chromosomes stayed intact.
www.cell.com/current-biol...
In our paper out now in @currentbiology.bsky.social we show that the Atlas blue butterfly has 229 chromosome pairs- the highest in diploid Metazoa! These arose by rapid autosome fragmentation while sex chromosomes stayed intact.
www.cell.com/current-biol...
Constraints on chromosome evolution revealed by the 229 chromosome pairs of the Atlas blue butterfly
The genome of the Atlas blue butterfly contains ten times more chromosomes than most
butterflies, and more than any other known diploid animal. Wright et al. show that
this extraordinary karyotype is ...
tinyurl.com
September 11, 2025 at 3:22 PM
How many chromosomes can an animal have?
In our paper out now in @currentbiology.bsky.social we show that the Atlas blue butterfly has 229 chromosome pairs- the highest in diploid Metazoa! These arose by rapid autosome fragmentation while sex chromosomes stayed intact.
www.cell.com/current-biol...
In our paper out now in @currentbiology.bsky.social we show that the Atlas blue butterfly has 229 chromosome pairs- the highest in diploid Metazoa! These arose by rapid autosome fragmentation while sex chromosomes stayed intact.
www.cell.com/current-biol...
Reposted by Frederic Delsuc
Hybridization and introgression are major evolutionary processes. Since the 1940s, the prevailing view has been that they shape plants far more than animals. In our new study (www.science.org/doi/10.1126/...
), we find the opposite: animals exchange genes more, and for longer, than plants
), we find the opposite: animals exchange genes more, and for longer, than plants
September 12, 2025 at 7:55 AM
Hybridization and introgression are major evolutionary processes. Since the 1940s, the prevailing view has been that they shape plants far more than animals. In our new study (www.science.org/doi/10.1126/...
), we find the opposite: animals exchange genes more, and for longer, than plants
), we find the opposite: animals exchange genes more, and for longer, than plants
Reposted by Frederic Delsuc
Nomination de Sébastien Lecornu à Matignon : un message politique très fort envoyé à tous les Français !
Pour soutenir la lutte dessinée, engagée et indépendante :
▶️ ko-fi.com/allanbarte
▶️ fr.tipeee.com/allan-barte
Pour soutenir la lutte dessinée, engagée et indépendante :
▶️ ko-fi.com/allanbarte
▶️ fr.tipeee.com/allan-barte
September 9, 2025 at 6:15 PM
Nomination de Sébastien Lecornu à Matignon : un message politique très fort envoyé à tous les Français !
Pour soutenir la lutte dessinée, engagée et indépendante :
▶️ ko-fi.com/allanbarte
▶️ fr.tipeee.com/allan-barte
Pour soutenir la lutte dessinée, engagée et indépendante :
▶️ ko-fi.com/allanbarte
▶️ fr.tipeee.com/allan-barte
Reposted by Frederic Delsuc
🦣🍖🧬 Fully funded 3-yr PhD in palaeogenomics & bioinformatics! Help me push non-model palaeogenomes beyond their limits @DTU in Denmark.
Start: Feb 2026 (flexible)
Application deadline: 24 Oct 2025
For details click here: tinyurl.com/BioExtPhD
Reposts appreciated 😁
Start: Feb 2026 (flexible)
Application deadline: 24 Oct 2025
For details click here: tinyurl.com/BioExtPhD
Reposts appreciated 😁
September 9, 2025 at 7:37 AM
🦣🍖🧬 Fully funded 3-yr PhD in palaeogenomics & bioinformatics! Help me push non-model palaeogenomes beyond their limits @DTU in Denmark.
Start: Feb 2026 (flexible)
Application deadline: 24 Oct 2025
For details click here: tinyurl.com/BioExtPhD
Reposts appreciated 😁
Start: Feb 2026 (flexible)
Application deadline: 24 Oct 2025
For details click here: tinyurl.com/BioExtPhD
Reposts appreciated 😁
Reposted by Frederic Delsuc
Preprint out for myloasm, our new nanopore / HiFi metagenome assembler!
Nanopore's getting accurate, but
1. Can this lead to better metagenome assemblies?
2. How, algorithmically, to leverage them?
with co-author Max Marin @mgmarin.bsky.social, supervised by Heng Li @lh3lh3.bsky.social
1 / N
Nanopore's getting accurate, but
1. Can this lead to better metagenome assemblies?
2. How, algorithmically, to leverage them?
with co-author Max Marin @mgmarin.bsky.social, supervised by Heng Li @lh3lh3.bsky.social
1 / N
High-resolution metagenome assembly for modern long reads with myloasm https://www.biorxiv.org/content/10.1101/2025.09.05.674543v1
September 7, 2025 at 11:35 PM
Preprint out for myloasm, our new nanopore / HiFi metagenome assembler!
Nanopore's getting accurate, but
1. Can this lead to better metagenome assemblies?
2. How, algorithmically, to leverage them?
with co-author Max Marin @mgmarin.bsky.social, supervised by Heng Li @lh3lh3.bsky.social
1 / N
Nanopore's getting accurate, but
1. Can this lead to better metagenome assemblies?
2. How, algorithmically, to leverage them?
with co-author Max Marin @mgmarin.bsky.social, supervised by Heng Li @lh3lh3.bsky.social
1 / N
Reposted by Frederic Delsuc
Excited to share that I’ve started as Associate Professor at the Technical University of Denmark! 🧑🎓
I also received an a NNF Emerging Investigator grant to use genomics + machine learning to study extinction.
👉 PhD & Postdoc positions coming soon — follow for updates!
Reposts appreciated 🙏
I also received an a NNF Emerging Investigator grant to use genomics + machine learning to study extinction.
👉 PhD & Postdoc positions coming soon — follow for updates!
Reposts appreciated 🙏
September 5, 2025 at 1:52 PM
Excited to share that I’ve started as Associate Professor at the Technical University of Denmark! 🧑🎓
I also received an a NNF Emerging Investigator grant to use genomics + machine learning to study extinction.
👉 PhD & Postdoc positions coming soon — follow for updates!
Reposts appreciated 🙏
I also received an a NNF Emerging Investigator grant to use genomics + machine learning to study extinction.
👉 PhD & Postdoc positions coming soon — follow for updates!
Reposts appreciated 🙏
Reposted by Frederic Delsuc
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!
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
Learn more in this week's issue: https://scim.ag/46caVho
September 4, 2025 at 7:01 PM
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!
Reposted by Frederic Delsuc
Mindblowing research out of the wonderful @isemevol.bsky.social (where I'm delighed to be based for the next three months).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
September 3, 2025 at 6:50 PM
Mindblowing research out of the wonderful @isemevol.bsky.social (where I'm delighed to be based for the next three months).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
Reposted by Frederic Delsuc
How is this possible?
This ant can lay eggs of two different species, birthed by the same mother
This ant can lay eggs of two different species, birthed by the same mother
September 3, 2025 at 3:13 PM
How is this possible?
This ant can lay eggs of two different species, birthed by the same mother
This ant can lay eggs of two different species, birthed by the same mother
Reposted by Frederic Delsuc
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
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
September 3, 2025 at 3:34 PM
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
go.nature.com/4mOb5T9
Reposted by Frederic Delsuc
August 27, 2025 at 7:44 AM