Lizards have evolved their own version of rock-paper-scissors. Here's my story on the genetics behind nature's games. Gift link: nyti.ms/493KGMI

As an early Christmas gift, @journal-evo.bsky.social accepted @kenstoyama.bsky.social and my paper on macroevolutionary patterns of ornament evolution in birds of paradise! 🦚 Check it out here: academic.oup.com/evolut/advan...

Surprisingly, sperm length is not linked to sperm storage traits. Instead, vagina length emerges as a key—yet overlooked—player in post-copulatory sexual selection in birds. academic.oup.com/evlett/article/9/6/686/8271462

if you enjoyed our chat today do check out my published paper at www.sciencedirect.com/science/arti... :)

🎄✨ Early Christmas gift! The abstract submission deadline for #ECE2026Tours has been extended to 31 January 2026 🎁🐜 For more information about the XIII European Congress of Entomology ➡️ www.ece2026.org @irbi-tours.bsky.social @cnrsbiologie.bsky.social @royentsoc.bsky.social

In an earlier review, I proposed to define #sexualselection as competition for gametic and non-gametic resources provided by mating partners. doi.org/10.1093/behe... I’m happy to now share a few additional thoughts on it in @behavecol.bsky.social doi.org/10.1093/behe...

Killer whales and humans share a trait that is otherwise rare in nature: a long female menopause. Read 'Sexually antagonistic selection, X-chromosome relatedness and the #evolution of menopause in killer whales': doi.org/10.1098/rsbl... #BiologyLetters #ecology Image: Christopher Michel

POSTDOC recruitment! We’re looking for a post-doc to join us to work on the (epi)genetic basis of inbreeding depression as part of the ANR-funded project FRIDA macrostomum.wordpress.com/the-genetic-... Please share!

Now out! How important is social experience in male mating behavior? @corrallopeza.bsky.social found that experienced males were more likely to coerce non-receptive females, but did not change overall preference onlinelibrary.wiley.com/doi/10.1002/... w/ @vdbijl.bsky.social @idarolti.bsky.social

Darwin speculated that it was energetically costly to be an hermaphrodite. He thought that might explain why they were relatively rare in animals. Our paper out today tested this conjecture for the first time. royalsocietypublishing.org/rspb/article...

I'm teaching Statistical Rethinking again starting Jan 2026. This time with live lectures, divided into Beginner and Experienced sections. Will be a lot more work for me, but I hope much better for students. I will record lectures & all will be found at this link: github.com/rmcelreath/s...

Kudos to @pdevillemereuil.bsky.social for writing a blog post about our paper published earlier this years in the one and only @peercomjournal.bsky.social ! You want to know how genetically variable plasticity is in your fav system, and what components of reaction norm shape vary the most? Try this!

New paper out from our lab today in Biology Letters! This work, led by our former lab tech @avigayillev.bsky.social and lab alum Isabella Martinez, used hemiclonal analysis to show that longer matings with previously mated females are advantageous to males! doi.org/10.1098/rsbl...

Do you find this image attractive? Then you're probably a male #bonobo, looking for a mate. But as this @plosbiology.org study shows, things are more complicated, and a swollen butt may not be as reliable a sign of fertility as it seems...

It’s time to publish responsibly! (And has been for a while, quite frankly...) To help you do so, @nicolasgaltier.bsky.social and coauthors have put together a handy database of academia-friendly journals, DAFNEE. You can read about it in their article just out in @jevbio.bsky.social.

Just one week left to submit your abstract for our symposium on eco-evolutionary dynamics of #sexualselection and #sexualconflict at @ece2026tours.bsky.social ! Join us in beautiful Tours, France, 29 June – 3 July 2026!

Our new article how sex roles shape androgen and hematocrit profiles (or the other way round?) of classically polyandrous red phalaropes and polygynous pectoral sandpipers academic.oup.com/beheco/advan...

Please help! We are looking for tissue-specific RNA-seq datasets or pubs with both male and female individual gene expression data, not pooled, from animal species. If you know of any relevant resources, please drop a link in the comments or send me a DM. Also, please help spread the word - thanks!

Interested in insect evolutionary genetics?🧬🪰 Come at #ECE2026Tours, to explore sexual selection and conflicts, phenotypic plasticity, host–microbiome dynamics, genetic variation and selection with keynotes incl. Pau Carazo, Patricia Beldade, Kelley Leung and Hassan Salem More info www.ece2026.org

Not sure our paper rocks as much as Katharina’s cover illustration, but we’re very delighted it was picked as ‘Editor’s Choice’ on @evolletters.bsky.social!

It’s that time of the year again: we are looking for a new cohort of @jevbio.bsky.social editors. Join our board and support your #SocietyJournal!

Huge News from the Western Amazon: it's the year 2025 and we are still describing entirely new, strikingly-distinctive large-bodied bird species! Behold Tinamus resonans sp. nov. the Slaty-masked Tinamou mapress.com/zt/article/v... #Ornithology @tetzoo.bsky.social 🪶

Long-term experiments show that strong sexual selection in beetles accelerates genetic and reproductive divergence, supporting its role in the early stages of new species formation.

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

🆕 in "Ecology": Who spreads more disease - males or females? At least in water fleas, it depends on temperature 📄The sicker sex is plastic: Thermal plasticity determines sex biases in pathogen transmission doi.org/10.1002/ecy....

Very happy to see our opinion article out in @cp-trendsecolevo.bsky.social today. 🥳 We ask whether sexual signals can influence the evolutionary trajectory of naturally selected adaptations, such as protective colouration, for better or for worse 🧐 1/n doi.org/10.1016/j.tr...

📢Don’t miss it! Less than 3 weeks left to submit your abstract and register at the early bird rate! The 15th of December deadline for the XIII European Congress of Entomology (29 June – 3 July 2026, Tours, France) is fast approaching! All details & submission: ➡️https://www.ece2026.org/

We’ve started the Thermal Ecology Alliance! Go grab a cup of TEA and join the movement www.thermalecologyalliance.org/participation

Funded PhD studentship available on the way that mating system affects coevolutionary processes with natural enemies. #ecoevo #sexualselection looking for a great candidate spread the word! www.findaphd.com/phds/project... 🧪

Most #hummingbirds use their elegant beaks to sip nectar, but male green hermits stab each other in the neck with their sharp, straight weaponised bills when duelling during the mating season journals.biologists.com/jeb/article/... Read the full article at journals.biologists.com/jeb/article/...

Excited to announce our symposium on eco-evolutionary dynamics of #sexualselection & #sexualconflict at the XIII European Congress of Entomology (29 June–3 July 2026, Tours, France), co-organised with Lucas Marie-Orleach! Call for abstracts is open until 15 Dec 2025. www.ece2026.org

Join us! 🧬🪰🎉🔬 We are currently advertising two #PhD projects to study the #evolution, #development and #genomics of sexual traits in stalk-eyed flies. Deadline for applying is Wednesday, January 7, 2026. Get in touch for more info!

Modestly, we decided to review a century's worth of theories of balancing selection :) onlinelibrary.wiley.com/doi/10.1111/...

In a stunning display of coordinated movement, male Swallow-tailed Manakins dance together in groups of up to five to attract females. Researchers studied display consistency, group size effects and implications for female choice: royalsocietypublishing.org/doi/10.1098/... #RSOS #AnimalBehaviour

Fast females, slow males: accelerated ageing and reproductive senescence in Drosophila melanogaster females across diverse social environments url: academic.oup.com/evlett/artic...

I posted a pre-print today. It's a big deal for me as it's the first paper as an independent PI. It's the culmination of 2 years worth of work and I'm really proud of it.

Our latest issue is out! www.cell.com/current-biol... On the cover, a male Victoria's riflebird doing his best to dazzle a female (or screaming at the white blob?) Paper & dispatch here👇 www.cell.com/current-biol... www.cell.com/current-biol...

🔔New paper alert🔔 a fun project, with some interesting findings- How short and longer of heatwave durations impact insect eggs and are results reproducible across labs? doi.org/10.1002/oik.... @biouea.bsky.social @exeter.ac.uk @bencole2504.bsky.social & co-authors

🚨 2nd master’s project! Interested in bird migration & genomics? 🧬🐦 Use whole-genome data to trace the recent colonization of Ouessant Island by Blue Tits and explore how irruptive migratory events can shape colonization dynamics. Please share! #ornithology www.vogelwarte.ch/de/wir/mitar...

Have you recently read about a particular field in depth? Perhaps you have just finished your PhD thesis? @jevbio.bsky.social is seeking Review Articles! Find out more about Reviews and Target Reviews at JEB here: academic.oup.com/jeb/pages/re...

Applications for the MEME programme (www.evobio.eu ) are now open! MEME is a research- and mobility-oriented master’s in evolutionary biology (& I’m a proud alumna!), jointly run by the Unis of Groningen, Uppsala, Montpellier, and LMU Munich, with Harvard and Lausanne as partners. Spread the word!

Does #SexualSelection fuel #Speciation? Our new #meta-analysis of comparative studies finds support for a positive relationship, but the rather moderate global effect suggests it’s not necessarily a dominant force. doi.org/10.1093/evle...

📜 Why are trade-offs often so elusive? Does the distribution of resources in a population affect if life history trade-offs emerge? We tested this experimentally in the Australian field cricket using a re-sampling approach. Now out #OpenAccess in @journal-evo.bsky.social: doi.org/10.1093/evol...

Please RT! 🚨 4-year PhD position in my lab (Oct 2026 start) 🚨 Molecular and genomic insights to sexually antagonistic genes Application deadline: Dec 2, 2025 biodtp.norwichresearchpark.ac.uk/projects/mol...

Temperature can reverse sexual conflict, facilitating population growth doi.org/10.1093/evle... Now in @evolletters.bsky.social by Roberto García-Roa et al.

How should ejaculate ejection behaviour by females be measured? And does it correlate with female pre-mating preference? Find out in our new paper! onlinelibrary.wiley.com/doi/10.1002/...

Do you want to study #Quantitative #Ecology & #Evolution? Are you interested in a research-oriented #MSc program? Apply & join us at @umontpellier.bsky.social in the #IDIL program. #Fellowships available for #international #students

I definitely wasn’t early to the Listers party, but I’m glad I made it. Can recommend to all birder adjacent and bird curious folks 🪶 m.youtube.com/watch?v=zl-w...