Stephane Guindon
@stephaneguindon.bsky.social
230 followers 170 following 19 posts
Computational geneticist, curious in all things related to evolution, ecology and science in general | #CNRS researcher | https://stephaneguindon.github.io
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stephaneguindon.bsky.social
Join us in Crete next year for a new edition of the conference "Mathematical and Computational Evolutionary Biology"! More information (to be updated in the coming weeks), including the list of keynote speakers available here:

mceb2026.sciencesconf.org?lang=en

cc @stamatak.bsky.social
Mathematical and Computational Evolutionary Biology, Crete, 2026 - Sciencesconf.org
mceb2026.sciencesconf.org
stephaneguindon.bsky.social
Incredibly honest, inspiring and insightful address given by the president of the American Society of Naturalists, Prof. Daniel L. Bolnick at #Evol2025. Highly recommended.
stephaneguindon.bsky.social
The first and last keynote speakers at #MCEB2025: Lisa Pokorny and Richard Durbin.
stephaneguindon.bsky.social
Thanks a lot Granada for hosting us in 2025! It was a real blast. Fantastic venue, marvellous city. Many thanks to the local organizers: A. Jesús Muñoz-Pajares and Mohamed Abdelaziz Mohamed. #MCEB2025
stephaneguindon.bsky.social
The programme and list of abstracts of selected talks and posters for the upcoming MCEB 2025 in Granada, Spain are now available. Please check out the conference website: mceb2025.sciencesconf.org?lang=en
MCEB 2025 - Granada, Spain - Sciencesconf.org
mceb2025.sciencesconf.org
stephaneguindon.bsky.social
MCEB 2025 in Granada, Spain, 12-16 May 2025: mceb2025.sciencesconf.org

Deadline for pre-registration : 21 February 2025

Looking forward to seeing you there!
MCEB 2025 - Granada, Spain - Sciencesconf.org
mceb2025.sciencesconf.org
Reposted by Stephane Guindon
leonhilgers.bsky.social
These extreme peaks - spikes in effective population size (Ne) immediately followed by an even more extreme collapse are really common! Here are a few examples from the literature:
stephaneguindon.bsky.social
Is there any new result about the origins of old (i.e. pre-european) Native American DNA in Rapanui genomes? Also, have we ever found traces of Rapanui DNA in Native American genomes? Asking for a friend :)
stephaneguindon.bsky.social
For its 2025 instalment, the conference "Mathematical and Computational Evolutionary Biology" (MCEB) will take place in Granada, Spain ! It will focus on methods and models for phylogenomics and population genomics, with a great lineup of keynote speakers.
mceb2025.sciencesconf.org?lang=en
MCEB 2025 - Granada, Spain - Sciencesconf.org
mceb2025.sciencesconf.org
Reposted by Stephane Guindon
sdellicour.bsky.social
How fast are viruses spreading in the wild? Check out our latest study now published in @plosbiology.bsky.social: doi.org/10.1371/jour.... A study performed with Paul Bastide, Pauline Rocu, Denis Fargette, Olivier Hardy, @msuchard.bsky.social, @stephaneguindon.bsky.social, and Philippe Lemey (1/7)
stephaneguindon.bsky.social
We applied this technique to the West Nile virus in the USA and showed that PIV models were indeed able to predict the arrival of that virus on the West Coast in 2002 using data collected before the end of 2001, for instance.
stephaneguindon.bsky.social
Also, since PIV models enable the estimation of speed at the tips of a phylogeny, we used them to predict future dispersal patterns.
stephaneguindon.bsky.social
Simulations show that "Phylogenetic Integrated Models" (PIV) provide estimates of dispersal speed that are more accurate than that obtained with previous approaches.
stephaneguindon.bsky.social
We devised a new model which, instead of describing the evolution of coordinates, focuses on the evolution of velocity. The coordinates are then obtained by integrating out velocities, which can be done at no extra computational cost.
stephaneguindon.bsky.social
-> Brownian trajectories have infinite variation: no matter how much you zoom in a trajectory, it will never be smooth... The concept of instantaneous speed simply does not exist here! This leads to difficulties for assessing the speed of dispersal under models such as the "Relaxed Random Walk".
stephaneguindon.bsky.social
Inferring speed of dispersal/migration in phylogeography is not trivial. For instance, assuming a Brownian process to model the evolution of spatial coordinates is a sensible approach overall but does not provide adequate means to measure speed. Why?
stephaneguindon.bsky.social

Modeling the velocity of evolving lineages and predicting dispersal patterns
www.pnas.org/doi/10.1073/...
www.pnas.org
stephaneguindon.bsky.social
J'ai eu le privilège de rencontrer (presque par hasard) Philippe Martin hier, à Lodève. Incroyable naturaliste, qui, grâce à ses techniques photographiques, nous donne une vision de la nature allant bien au delà de ce que l'oeil peut percevoir. www.youtube.com/watch?v=VGOW...
Philippe Martin - Ecologue photographe - Reportage
YouTube video by PHOTOGRIFFON
www.youtube.com