Raymond Castillo
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raymondcast.bsky.social
Raymond Castillo
@raymondcast.bsky.social
PhD Student at Washington University in the Landis Lab!!

Polyploids Rock!!!

He/Him
Pinned
Hi to all new mutuals and fellow scientists fleeing twitter! Figure I should have a post about who I am! I am a phd student at WashU in the landis lab, developing phylogenetic methods! I am primarily interested in modeling chromosome evolution using SSE models!
Had a great post-SSB hackathon with the RevBayes crew! Got tons of work done on both RevBayes and RevGadgets! Special thanks to @trayc7.bsky.social @jembrown.bsky.social for organizing and hosting!
January 15, 2026 at 6:38 PM
Reposted by Raymond Castillo
The wonderful Emily Graslie talking to the #SSB2026 crowd about the importance of natural history museums. She has an art background and became enamored with the University of Montana natural history collections and created the #brainscoop series.
January 10, 2026 at 10:45 PM
Reposted by Raymond Castillo
I am still actively looking for postdoc positions — please lmk if you (or your friends and colleagues) need a hardworking postdoc with field, lab, and bioinformatic skills!

I am broadly interested in evolution in the ocean, conservation and population genetics, and rapid evolution.
Successfully added a few letters to my name last month!!! Truly could not have done this with our villages upon villages 🫶🏼
December 11, 2025 at 1:08 AM
Reposted by Raymond Castillo
Successfully added a few letters to my name last month!!! Truly could not have done this with our villages upon villages 🫶🏼
December 11, 2025 at 1:04 AM
Overheard a conversation from an UG walking on campus. They said "I don't think I could have done my degree without AI".

It's somewhat frightening the reliance some have on AI and I'm uncertain of its increased use at universities, but maybe i'm becoming the old man shaking his fist...
December 11, 2025 at 12:39 AM
I am so happy to have successfully proposed my dissertation chapters! Despite how nervous I was, it went over so well and all of my committee members are so incredibly helpful!
December 9, 2025 at 5:55 PM
Reposted by Raymond Castillo
As you are making your schedule for the last day of #Evol2025 don’t forget to add Nicolás Castillo’s talk about Puya character displacement. Puya are the most amazing plant in the Páramo ecosystem and their macroevolution is incredible.
June 24, 2025 at 3:39 AM
Last but not least, I will be sharing some work on a model I have been developing for chromosome evolution today! Be there or be square! I'll be presenting at 4:45 in Phylogenetic Theory! #Evol2025
June 23, 2025 at 11:58 AM
Also, if you missed their poster last night, Sarah Swiston, will be presenting their work on elipse modeling for biogeographic range evolution! (EMPIRE)
Alright #Evol2025 folks, we got a ton of talks today!
Gabriel Garcia, a visiting PhD student from Brazil, will be sharing his work on ecological traits driving diversification in bats!
June 23, 2025 at 11:56 AM
Alright #Evol2025 folks, we got a ton of talks today!
Gabriel Garcia, a visiting PhD student from Brazil, will be sharing his work on ecological traits driving diversification in bats!
June 23, 2025 at 11:55 AM
Today another postdoc in the Landis lab, @albertchristian.bsky.social, will be giving a talk during the machine learnering and new inference algorithm section at 3:15! If you are particularly partial to island biogeography you definitely dont wanna miss this one! #Evol2025
June 22, 2025 at 12:58 PM
Be sure to check out Anna Nagel's talk today in Molecular evolution II! Really cool work on estimating mutation ages and population origins in structured populations! #Evol2025
June 21, 2025 at 2:40 PM
Had a fantastic time at the mole 2025 workshop in Woods Hole! I am so grateful to meet such amazing scientists! Although times are difficult and uncertain now, engaging with professors and students who are still working so hard to teach and learn despite recent hardships is truly uplifting.
June 2, 2025 at 8:46 PM
Reposted by Raymond Castillo
It's back! The Society of Systematic Biologists is running Year 3 of the Mentorship Program!

Find community, support your colleagues, and talk trees. Apply by June 10th, 2025.

Program info: www.systbio.org/mentorship-p...

Application form: forms.gle/QtD22C9dtfRF...

@systbiol.bsky.social
May 19, 2025 at 5:21 PM
Reposted by Raymond Castillo
This is bad.

Read the updates.

www.nsf.gov/updates-on-p...
Updates on NSF Priorities
www.nsf.gov
April 18, 2025 at 7:28 PM
Totally forgot to update: I PASSED!!!!!!
A small win after a lot of despairing the past few months with the political climate :')
Qualifying exam in a couple hours! Once it's over with I'll have to figure out a different way to distract myself from the existential dread that is US politics
April 18, 2025 at 6:07 PM
Qualifying exam in a couple hours! Once it's over with I'll have to figure out a different way to distract myself from the existential dread that is US politics
April 16, 2025 at 5:46 PM
Reposted by Raymond Castillo
The recording of last week's #PolyploidyWebinar featuring @raymondcast.bsky.social and @erichagen.bsky.social is now up! youtu.be/zmUyTO3jN6s
Polyploidy Webinar 2 April 2025
YouTube video by Mike Barker
youtu.be
April 8, 2025 at 5:27 PM
Reposted by Raymond Castillo
Join us on Wednesday, April 2 at 11 AM Pacific Time for the next #PolyploidyWebinar! The last webinar of the 24-25 season will feature @raymondcast.bsky.social and @erichagen.bsky.social! Sign up (if not already!) to get the zoom: www.barkerlab.net/polyweb
March 29, 2025 at 1:28 AM
Reposted by Raymond Castillo
March 7, 2025 at 9:02 PM
Reposted by Raymond Castillo
SHARE WIDELY.
KNOW YOUR RIGHTS.

With mass deportations starting today across the country, it is vitally important - for both citizens and non-citizens - to know your rights.

You have the right to remain silent. Assert it. You have the right to a lawyer. Ask for one.

(1/3)
January 22, 2025 at 2:19 AM
list comprehensions may never make 100% sense to me but at least the work 💀
December 9, 2024 at 4:07 PM
Reposted by Raymond Castillo
Earlier this year my advisor @landismj.bsky.social and I published this cool work at BMB; looking at applying diffusion in macroevolutionary context for state-dependent diversification models to learn about evolutionary patterns that these models produce. #evobio

www.smb.org/news/13402507
December 5, 2024 at 12:51 AM
Reposted by Raymond Castillo
Bayesian Least-Squares Supertrees (BLeSS): flexible inference of large time-calibrated phylogenies https://www.biorxiv.org/content/10.1101/2024.11.29.625936v1
Bayesian Least-Squares Supertrees (BLeSS): flexible inference of large time-calibrated phylogenies https://www.biorxiv.org/content/10.1101/2024.11.29.625936v1
Time-calibrated phylogenies are key to macroevolutionary hypothesis testing and parameter inference,
www.biorxiv.org
December 5, 2024 at 6:33 PM
Reposted by Raymond Castillo
Join us on Wednesday, December 4, at 11 AM PST for the next #PolyploidyWebinar! This month we have Pam & Doug Soltis presenting on the Polyploid Integration Institute and @trevorfaske.bsky.social on analyses of mixed-ploidy data! Sign up (if not already!) to get the zoom: www.barkerlab.net/polyweb
November 30, 2024 at 11:47 PM