Thomas Lesaffre 🌱

Many organisms, including humans, reshape their environments in ways that influence the conditions faced by future generations. We ask whether this can favour biological variation with @irisprigent.bsky.social in our new paper. Thanks to @dee-unil.bsky.social @snsf.ch
www.pnas.org/doi/full/10....

Mathematical Models in Ecology and Evolution | University College Cork Learn, Study and Research in UCC, Ireland's first 5 star university. Our tradition of independent thinking will prepare you for the world and the workplace in a vibrant, modern, green campus.

For the MMEE 2026 in Cork www.ucc.ie/en/matsci/ev... note the updated deadline!

Submission of talks and poster presentations: March 30th, 2026.

We are offering a fully funded two-year postdoctoral position focused on sex chromosome evolution and speciation in the *Jaera albifrons* species complex. Please find the advertisement attached. We welcome applications from interested candidates. Join us :-)

My computer says she is an "Old Godmother".

Environmental conditions shape the global distribution of ant societies | PNAS Sociality has evolved several times and is a key strategy for overcoming environmental challenges and promoting ecological success. Yet, it remains...

Our new study is out in @pnas.org ! 🐜🌍
We show that the environment shapes how ant societies are distributed across the world. Accessible here:
www.pnas.org/doi/10.1073/...

Post doc position in Evolutionary biology and bioinformatics - work environment: This postdoctoral position will be supervised by Aline Muyle and hosted at the Institute of Evolutionary Sciences of Montpellier (ISEM), within the CHANGE department and the Plant ...

I am hiring a Postdoc (18 months contract in Montpellier, France) to study how polyploidy affects sex chromosomes in the plant Silene latifolia, using bioinformatic analyses of RNA-seq and DNA-seq data. Deadline for applications March 24th. euraxess.ec.europa.eu/jobs/412961

Interested in the molecular mechanisms and evolution of atypical reproductive modes ? Since 2025, we are running a (bi)-monthly online series. You can join us to watch or present!

More information : tinyurl.com/EvoRepro
Sign-up to our mailing list : go.unil.ch/QYYNa

Plastic Germination, Temporal Niche Partitioning and Emergent Assortative Mating in Annual Plants Temporal environmental fluctuations can drive genetic diversity and species coexistence via the storage effect. Using eco-evolutionary models of annual plants, we show that adaptive plasticity in see...

V happy to share new paper led by @schmidmax.bsky.social: doi.org/10.1111/ele....

We show that plastic germination timing not only buffers environmental fluctuations (storage effect) but also promotes divergence, temporal assortative mating and thus ecological speciation. Thx @dee-unil.bsky.social

Oui oui on avait compris fdp.
(Féru De Patriotisme)

Plastic Germination, Temporal Niche Partitioning and Emergent Assortative Mating in Annual Plants Temporal environmental fluctuations can drive genetic diversity and species coexistence via the storage effect. Using eco-evolutionary models of annual plants, we show that adaptive plasticity in see...

New paper out in Ecology Letters with Katja Tielbörger, Amaël Daval, and Charles Mullon 🥳!

Using eco-evolutionary models of annual plants, we show that adaptive plasticity in seed germination promotes genetic diversification and ecological speciation.

dx.doi.org/10.1111/ele....

🌺 New preprint out with John Pannell and @charlesmullon.bsky.social ! 🌺

We show that selection broadly favours a form of plasticity for the selfing rate where individuals adjust their mating behaviour to their condition — their overall vitality owing to their genetic background and environment. ⤵️

Led by my talented PhD student @justine-armg.bsky.social we’re running a #meta-analysis of #cross-sex-genetic-correlations in fitness components.

If you have unpublished data or know of studies that might not appear in a systematic search, please reach out, we’d love to include them!

Please share!

🌺 New preprint out with John Pannell and @charlesmullon.bsky.social ! 🌺

We show that selection broadly favours a form of plasticity for the selfing rate where individuals adjust their mating behaviour to their condition — their overall vitality owing to their genetic background and environment. ⤵️

Grand moment de dignité journalistique. C’est un journaliste suisse, malheureusement, ce n’est pas en France qu’on verrait ça.

The evolution of tandem repeat sequences under partial selfing and different modes of selection - Heredity Heredity - The evolution of tandem repeat sequences under partial selfing and different modes of selection

New paper with @vsudbrack.bsky.social. Using pop gen modelling, we show that partial selfing makes selection on tandem repeats more efficient, reducing the associated load across different scenarios. Thanks to @snsf.ch @dee-unil.bsky.social @fbm-unil.bsky.social !

www.nature.com/articles/s41...

Evolution and mechanisms of atypical reproductive modes Evolution and mechanisms of atypical reproductive modes Monthly meetings to bring together researchers focusing on atypical reproduction and other non-mendelian transmission systems. The objective is to promote the exchange of ideas and feedback on conceptually similar questions approached with d...

Join our online series on atypical reproductive modes and non-Mendelian inheritance, Tuesdays at 3 p.m. CET. More info & sign-up: https://tinyurl.com/EvoRepro Best, Schwander Group, University of Lausanne. #conference

Friedman Lab Visit the post for more.

Are you anywhere in the world (other than Canada) and want to do a PhD in my lab in Canada at Queen's University? We have a prestigious scholarship for 3-years of PhD funding. Get in touch, applications due early February. Must love plants and evolution!
friedmanlab.ca

Reporting back from the frontline of the 59th iteration of PopGroup conference in Lille, only the 2nd ever outside the UK. With a free bar stocked with local bar, excellent frites for the poster session and top quality food, why would we ever hold it anywhere again?! 😁 #pgg59 #popgroup59 #conference

Musicians warm up for the popGroup gala at ‘chaud bouillon’ #popgroup59 #ppg59 #pgg59 (maps.app.goo.gl/mEp8d9dWbJ6k...)

beers are on their ways !

... current status...

The ULille campus under the snow

Looking forward to welcoming everyone in just two days now...

Check out the latest updates to the program at populationgeneticsgroup.org.uk

Comprendre l’intervention américaine au Venezuela On ne peut pas comprendre l’enlèvement de Nicolas Maduro si l’on ignore les masses financières colossales associées à un changement de régime à Caracas.

Les États Unis ont déjà exploité férocement le Venezuela et ses ressources pétrolières pendant quelques décennies. Les chiffres cités par Zucman dans cet article sont saisissants, le pillage était colossal. Pour Trump par contre ça c'était l'âge d'or des US.
open.substack.com/pub/gabrielz...

Congrats Camille !

One week left to submit abstracts for the EMBO workshop on Molecular Mechanisms of Selfish Elements and Strategies!

In Bern (Switzerland), from 8 to 11 February 2026.

meetings.embo.org/event/26-sel...

#EMBOselfishElements #EMBOevents

Great opportunity for those interested in fundamental questions in evolutionary biology and mathematical models: postdoc opening in Laurent Lehmann’s group @unil.bsky.social. We have a lively community of theorists here in Lausanne with good interactions across groups. Join us ! Please RP

Time to publish responsibly: DAFNEE, a database of academia-friendly journals in ecology and evolutionary biology Abstract. The current economics of scientific publishing reveal a profound imbalance: academia pays prices far exceeding the actual costs of publication. R

Time to publish responsibly: DAFNEE, a database of academia-friendly journals in ecology and evolutionary biology url: academic.oup.com/jeb/article/...

Only a few days left to register and join us in Lille for this first ever French edition of PopGroup!

Next week's DEE External Seminar welcomes Andrew Pomiankowski (hosted by Charles Mullon) with a talk on mitochondrial quality and the evolution of sexes. 12:15, November 6th at the Biophore Amphitheatre or online via REC-UNIL.

Next week's DEE External Seminar welcomes Andrew Pomiankowski (hosted by @charlesmullon.bsky.social ) with a talk on mitochondrial quality and the evolution of sexes. 12:15, November 6th at the Biophore Amphitheatre or online via REC-UNIL.

Molecular mechanisms of selfish elements and strategies Certain genes, chromosomes, organelles, or entire sets of chromosomes can bias their transmission to the next generation, propagating themselves at the expense of the rest of the genome. Referred to …

(1/9) Join us in Bern, Switzerland (8–11 Feb 2026) for our EMBO Workshop on Molecular Mechanisms of Selfish Elements and Strategies!

Organized with Tanja Schwander, Laura Ross (@laurarossevo.bsky.social) and Axel Imhof.

meetings.embo.org/event/26-sel...

#EMBOselfishElements #EMBOevents

Encore une fois il a plié cette obscénité mise en scène tout au long de la journée d’hier.
Propre, carré, clinique.
On peut passer à autre chose