Chadi Saad-Roy

Young kea on a corrugated metal roof

Kea! 🪶

Dont miss the ESPIDAM summer program in June 2026 in Stockholm, covering many key concepts for ID modelling:
stochastic models, AI for ID control, nowcasting and forecasting, phylodynamics, data analysis, network models, within-host models, health economics www.statistics.su.se/english/divi...

Bottleneck size drives the evolution of cooperative traits in an aggregative multicellular myxobacterium Population bottlenecks shape the evolution of cooperative traits in Myxococcus xanthus through life cycle trade-offs. This study shows that stringent bottlenecks favor growth and sporulation, while re...

Happy to share our new paper in PLOS Biology journals.plos.org/plosbiology/...

Showed that population bottlenecks don't uniformly drive “cooperation” but rather selectively shape which cooperative traits evolve #evolution #ecology #microbiology

@vishuguttal.bsky.social @iamsamayp.bsky.social

Assistant Professor without Tenure (WOT), Marine Invertebrate Organismal Biology University of Washington: Academic Personnel & Faculty: College of the Environment: Aquatic and Fishery Sciences Location Friday Harbor Labs, WA Open Date Dec 12, 2025 Description The School of Aquatic and Fishery Sciences (SAFS) and Friday Harbor Labs (FHL) at the University of Washington (UW) invite applications for the Riddiford – Truman Endowed faculty Chair, a position in the Without Tenure (WOT) track at the Assistant rank with specialization in marine invertebrate organismal biology. The successful candidate is expected to develop a collaborative, extramurally-funded and nationally recognized research program based at FHL that leverages FHL’s unique marine research infrastructure and natural setting. We especially welcome candidates whose scholarship in natural systems advances fundamental knowledge and contributes to environmental stewardship. All University of Washington faculty engage in teaching, research, and service.

Looking for a faculty job at one of the world's great research stations?

We're looking for a marine invertebrate biologist at UW's Friday Harbor Labs.

apply.interfolio.com/178804

Modern-Day Oracles or Bullshit Machines: Introduction A free online humanities course about how to learn and work and thrive in an AI world.

Recently had the chance to hear @carlbergstrom.com on information foraging in the current space of LLMs.

He and @jevinwest.bsky.social have crafted a course that touches various facets of LLMs. Just finished reading through its 18 modules. Absolutely loved it!

thebullshitmachines.com

Its very exciting to see this paper out in @behavecol.bsky.social. These conversations, expertly led by @delphinedemoor.bsky.social, have really shaped how I now think about working with social network data. Check out Delphine's thread to learn more!

Super excited that the bulk of my PhD work is now preprinted! Here we used whole-community competition, or coalescence, experiments to quantify selection acting on genetically diverged strains within larger communities. (1/n)
www.biorxiv.org/content/10.1...

2 job adverts on a NERC project w myself + @darrenobbard.bsky.social on “What determines the virome: ecology and the environment, evolution, or species history?” early 2026 in
@uniexecec.bsky.social
- Postdoc: jobs.exeter.ac.uk/hrpr_webrecr...
- RA: jobs.exeter.ac.uk/hrpr_webrecr...
Pls share!

I'm really excited to see this paper by @fernpizza.bsky.social, @baym.lol, et al. This is a great model system for studying multilevel selection, and the experimental work builds nicely on cross-scale theoretical modeling approaches that I've enjoyed learning about over the past few years. 🧵

Thanks!

thank you!

Thank you, Matt!

Thanks!

Thanks, Amy!

Thank you, Asher!

I'm super excited to have joined @ubcmath.bsky.social
and @ubcmicroimmuno.bsky.social !! Please get in touch if you might be interested in graduate studies or postdoctoral research opportunities!

Thanks so much, Becky!

This piece on infection history as a driver of individual heterogeneity in infection outcomes was fun to think about and to write with @chadisaadroy.bsky.social and Mike Boots. Also suggest that systems like #Drosophila can offer useful tools to tackle the epidemiological consequences.

Evolutionary Games: Mathematical Theory and Biological Insights

I am really happy to share that there will be a @nitmb.bsky.social workshop next year on mathematical and biological features of evolutionary game theory.

It was really fun to co-organize this workshop with Olivia Chu, Alex McAvoy, and @jplotkin.bsky.social.

www.nitmb.org/evolutionary...

Vaccination to mitigate climate-driven disruptions to malaria control in Madagascar Extreme weather is common in high malaria burden areas and is likely to increase in severity owing to climate change–related severe weather events. Yet, data on infection rates after these events and ...

Out today in Science: Our work on tropical cyclones and malaria in Madagascar. Work inspired by many and done in collaboration with many www.science.org/doi/10.1126/...

thanks so much!

Corina Tarnita and I have discussed the relation between theoretical ecology and evolutionary game theory since my sabbatical in 2022. Now the paper is out, doi.org/10.1073/pnas... Cooperation in nature may not be mysterious when there are growth differences- questioning the notion of cooperation.

Join Us! | King Lab Are you interested in joining the King Lab? More information here!

Come join us at beautiful UBC! The King Lab is recruiting a Post-doc Fellow to develop mathematical theory on infectious disease evolution and emergence, together with Ben Ashby (SFU) #zoonoses #biodiversity www.zoology.ubc.ca/kinglab/join...

thank you!

thanks!

Thanks so much Dan!

Thanks so much, Nick!

Thank you!

thanks!

Thanks so much!