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Ryan Hulett

@ryanehulett.bsky.social
917 followers 385 following 26 posts

HHMI Hanna Gray Postdoctoral Fellow in the Cleves lab. EvoDevo of endosymbioses in a changing world. 🏳️‍🌈 Missing the Ediacaran.

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Ryan Hulett @ryanehulett.bsky.social · 29/09/2026
Absolutely incredible. 👏🏽
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Ben Parker @ben-parker.bsky.social · 21/09/2026
Excited that our new paper with @henrylabsymbio.bsky.social and Kerry Oliver is out @pnas.org! We show that mobile genetic elements can spread adaptive host-benefiting traits across heritable insect symbionts on eco-evolutionary timescales.🧵 www.pnas.org/doi/10.1073/...
pnas.org
Phenotypic divergence is driven by mobile genetic elements in a heritable insect symbiont | PNAS
Heritable microbes profoundly influence insect biology, yet the traits they confer often evolve rapidly and differ among closely related symbiont s...
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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · 19/09/2026
Evidence collected by successive lab members over many years that neural cells in the Clytia larva have two origins: From 'i-cells' located in endoderm and by delamination of the gastrula ectoderm. doi.org/10.1242/dev.... @biodev-vlfr.bsky.social @annaferraioli.bsky.social
The two proposed neurogenesis pathways during Clytia larval development
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Sheri @sagrill.bsky.social · 19/09/2026
Incredibly excited to share my new preprint! 🪰🧬 Ever wondered how germ cells can specify their fate without having a dedicated transcriptional program? We found that germ cells keep the uncommitted chromatin state of the early embryo www.biorxiv.org/content/10.6...
biorxiv.org
Decoupling Transcription from Cell Fate Preserves Germ Cell Totipotency
Only germ cells can give rise to a totipotent embryo, yet a conserved transcriptional program for germ cell identity remains elusive. Profiling Drosophila primordial germ cells (PGCs) across embryogen...
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Arjuna Rajakumar PhD @arjunarajakumar.bsky.social · 19/09/2026
So proud of my lab mate @sagrill.bsky.social (whose on the job market 👀) for this magnum opus from @remlehmann.bsky.social lab @whiteheadinstitute.bsky.social ScRNA-seq of 🪰 germ cells reveals new biology, answers age old questions, and proposes new paradigms! 1/8 www.biorxiv.org/content/10.6...
Drosophila stage 10b embryo w/HCR staining marking two germ cell clusters. One will successfully colonize the gonad and the other, like tears in the rain, will be lost forever
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Leslie B Vosshall PhD @leslievosshall.bsky.social · 18/09/2026
Transformative opportunity for early career faculty @hhmi-science.bsky.social #FreemanHrabowski Scholars competition opens 11/3/2026 but you can get started NOW: view application components, establish eligibility, and unlock example applications and other resources www.hhmi.org/programs/fre...
hhmi.org
Early Career Faculty Program | Freeman Hrabowski Scholars | HHMI
The Freeman Hrabowski Scholars Program offers comprehensive support to outstanding early career faculty committed to scientific excellence in their own research, and to fostering labs that expand the ...
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Ryan Hulett @ryanehulett.bsky.social · 17/09/2026
❤️
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Jessica Goodheart @mollusksatamnh.bsky.social · 11/09/2026
The Goodheart Lab is seeking a full-time Postdoctoral Fellow on an NSF-funded project to study the process of kleptocnidy, the theft and storage of nematocysts, in nudibranch mollusks. Project link: www.nsf.gov/awardsearch/...). Application here: careers.amnh.org/postings/4908.
nsf.gov
Award Details - NSF Award Search
Find award details and explore award abstracts and publications.
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Marine Biological Laboratory @mblscience.bsky.social · 07/09/2026
Happy #MicroscopyMonday! Check out this confocal image of #squid blood cells (known as hemocytes) from the hummingbird bobtail squid (Euprymna berryi). Imaged by student Yoon Chang during the 2026 Molecular and Cell Biology of Symbiosis course.
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ICRS International Coral Reef Society @icrs.bsky.social · 05/09/2026
The Status of Coral Reefs of the World: 2025 report is out! 📊🪸 Peer-reviewed by ICRS, it tracks global hard coral & macroalgae cover over 44 years. ➡️ Swipe for key takeaways! 💬 What’s happening on your local reefs? Share what you see below!
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Open Box Science @openboxscience.bsky.social · 04/09/2026
Julia Belk's talk is now on Youtube! www.youtube.com/watch?v=uUOL... Microglia replacement during human aging @juliabelk.bsky.social Paper: Somatic mutations reveal the ontogeny of microglia in human aging (Nature 2026)
youtube.com
[Julia Belk] Microglia replacement during human aging
Speaker: Julia Belk Title: Microglia replacement during human aging Paper: Somatic mutations reveal the ontogeny of microglia in human aging (Nature 2026)
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Thibaut Brunet @thibautbrunet.bsky.social · 02/09/2026
🚨 New preprint alert! 🚨 Choanoflagellates reorganize their global cytoskeletal architecture within seconds to explore confined microspaces. This is the main PhD work of the amazing @maitefreired.bsky.social www.biorxiv.org/content/10.6... A tread 🧵⬇️
biorxiv.org
Rapid repurposing of microvillar content drives a flagellate-to-amoeboid switch in the closest relative of animals
Animal cells extensively remodel their cytoskeleton during differentiation and can notably switch between two major motility modes: flagellum-based swimming and actin-based crawling. We previously sho...
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Ryan Hulett @ryanehulett.bsky.social · 28/08/2026
Just had a spawn this week :)
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Stowers Institute @stowersinstitute.bsky.social · 21/08/2026
🪼Jellyfish and anemones sting using some of the most complex cell-based venom systems in the animal kingdom. @mgstowers.bsky.social Lab postdoc @gelatinoussting.bsky.social is decoding how these stinging cells form, work rooted in 500+ million years of #evolution. 🔗Read more: bit.ly/3SsB74n
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Genetics Society of America @genetics-gsa.bsky.social · 06/08/2026
🪱 A comparative analysis of sex determination in the hermaphrodite, Caenorhabditis tropicalis, shows how it differs from other Caenorhabditis species and illustrates how genetic pathways change during natural selection. Discover more in the August issue of #GENETICS 🔗 buff.ly/qXVSbgo
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James Gagnon @james-gagnon.bsky.social · 04/08/2026
In a new (ish) preprint, we used CRISPR barcodes to label germline stem cell clones in zebrafish, then tracked their contributions to sperm production for 2 years. Instead of staying stable, individual clones rose, fell, and disappeared over time. www.biorxiv.org/content/10.6...
biorxiv.org
Clonal dynamics deviate from neutral drift in zebrafish spermatogenesis
Spermatogonial stem cells (SSCs) maintain male fertility, but how their clonal dynamics change with age remains poorly understood. Here, we use in vivo CRISPR barcoding in zebrafish to label SSCs and ...
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Marine Biological Laboratory @mblscience.bsky.social · 05/08/2026
Hidden in water collected from the MBL's own Waterfront Park, Whitman Fellows Takato Honda, Ph.D. and Daniel Cortes have discovered a new species of stentor: Stentor hondawara. 🔗 Full story here: go.mbl.edu/5xfcpj
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Allan Carrillo-Baltodano @allancarbal.bsky.social · 05/08/2026
Right on time for #WormWednesday "Patterns of Autonomous and Conditional Neural Specification for the Brain and Ventral Nerve Cord in Annelida" onlinelibrary.wiley.com/doi/10.1111/... With Nicole @johnnyds.bsky.social @biyolokum.bsky.social Skyler and @neva-meyer.bsky.social #EvoDevo #DevBio
Diagrams of different experimets in two annelid worms, showing a complex secification of neurons between brain and nerve cord
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Molecular Biology and Evolution @molbioevol.bsky.social · 13/07/2026
@ironark.bsky.social et al. measured transcript abundance, ribosome-associated RNA, and protein abundance in bacterial endosymbionts, suggesting a mechanism for aberrant pseudogene-derived protein removal. 🔗 doi.org/10.1093/molbev/msag153 #societyjournal #evobio #molbio
MBE | The transcriptional and translational outcomes for pseudogenes in bacterial endosymbionts
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RobertoFeuda @robertofeuda.bsky.social · 30/07/2026
We're hiring 4 postdocs at @unibo.it to study nervous system evolution. Seeking expertise in single-cell genomics, molecular or developmental biology in ctenophores, cnidarians, echinoderms, flies or human stem cells. 2+2 yrs contract. Deadline: 26 Aug. Please share! bandi.unibo.it/s/apos7/proc...
bandi.unibo.it
Procedura di valutazione comparativa per titoli e colloquio per il conferimento di n. 4 contratti di ricerca presso il Dipartimento di Scienze Biologiche, Geologiche e Ambientali - SSD BIOS-04/A - GSD...
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Gaspar Jekely @jekely.biologists.social.ap.brid.gy · 30/07/2026
If you are interested in nervous system evolution you may want to read our review with Kei Jokura on nerve nets: "Revisiting nerve nets: functional organization and evolutionary implication" link.springer.com/article/10.1038/s… […] [Original post on biologists.social]
Figure showing different Erdős–Rényi-type random graphs with different preferential attachment, resulting in increasingly modular graphs. Images of Syncytial nerve net of the ctenophore Mnemiopsis, Schematic of an incision experiment carried out by Romanes on the scyphosoan medusa Aurelia,  Schematic of the localised spread of activity in a hydrozoan nerve net, where different non-overlapping nerve nets mediate distinct behaviours. The hydromedusa Aglantha digitale with its giant motor system shows a centralised arrangement.
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Marc Robinson-Rechavi @marcrr.bsky.social · 29/07/2026
New preprints! 1/3 Spider venom glands are modified salivary glands which have recruited appendage and myogenic programs from other the developmental programs of other organs. Led by Giulia Zancolli, with @yehumoran.bsky.social doi.org/10.64898/202...
Schematic view of the embryonic expression pattern of the genes Sage, Sum1 and Dll in a spider embryo, showing Sage only in venom gland primordia, Sum1 in chelicerae and other appendages, and Dll at the distal end of appendages
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Moi Expósito-Alonso (MOILAB) @mexpositoalonso.bsky.social · 28/07/2026
The prestigious Miller Research Postdoctoral Fellowship is open! University of California, Berkeley This is a postdoc fellowship with substantial support and independence to be hosted at a lab at Berkeley, reach out with interests! miller.berkeley.edu/nominate-app...
miller.berkeley.edu
Miller Research Fellowship | Miller Institute for Basic Research in Science
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Alex Eve @amjeve.uk · 26/07/2026
Congratulations, @jeffreyafarrell.bsky.social, on winning the @socdevbio.bsky.social #2026SDB Elizabeth D. Hay New Investigator Award! Learn more about Jeff's science and career in his @dev-journal.bsky.social interview with @saanjbati.bsky.social.
doi.org
Transitions in development – an interview with Jeffrey Farrell
Jeffrey Farrell is an Earl Stadtman Investigator at the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), USA, where he heads the Unit on Cell Specification and ...
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Society for Developmental Biology @socdevbio.bsky.social · 04/07/2026
A window into early development! 🔬✨ This 2-photon image of a Ciona neurula embryo reveals a nuclear SoxB1 reporter (grey) and a membrane Msxb reporter, color-coded along the anterior–posterior axis, highlighting the organization of the developing nervous system. 📷: Laurence Lemaire #FluoresceFriday
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Nancy Moran @nancy-moran.bsky.social · 02/07/2026
A step forward in discovering Buchnera's key to the aphid's heart, published today! Thanks to Jerry Maeda and other authors--a great team -- and to the helpful reviewers #SymbioSky doi: doi.org/10.1038/s415...
doi.org
A secreted endosymbiont protein essential for colonizing host cells - Nature
SyeA was present in the Buchnera ancestor, is secreted into the host cytoplasm, is homologous to secreted effectors of bacterial pathogens and is essential for Buchnera transmission.
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Phillip Cleves @pcleves.bsky.social · 02/07/2026
Our work on the symbiont-containing organelle that supports coral reefs is published today. Also, new genetic tools to study symbiosis in both corals and Aiptasia. Great work by Shumpei Maruyama, Cat Henderson, and the rest of the fantastic team. #SymbioSky www.cell.com/cell/abstrac...
cell.com
Co-option of lysosomal machinery shapes the evolution of the intracellular photosymbiosis supporting coral reefs
Corals harbor intracellular algal symbionts in specialized organelles that enable them to build diverse reef ecosystems. Corals and other cnidarians have repeatedly evolved this symbiosis through the ...
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Gaurav Vaidya @gvaidya.bsky.social · 01/07/2026
The first preprint from my PhD is out! :thread: How does an animal choose between two completely different reproductive fates? Here’s how one planarian does it :point_down: www.biorxiv.org/content/10.6...
biorxiv.org
Life-cycle trajectory inference links temperature-gated progenitors to reproductive fate
Temperature shapes reproductive strategies across animals, yet how individuals switch between sexual and asexual reproduction remains unknown. We establish the planarian Phagocata morgani as a model f...
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Stowers Institute @stowersinstitute.bsky.social · 25/06/2026
🎉 Congrats to @mgstowers.bsky.social postdoc @hrhorkan.bsky.social on receiving a prestigious @wellcometrust.bsky.social Early-Career Award! The award will support Helen as she takes the first steps toward launching her independent research program at @uniofexeternews.bsky.social: bit.ly/3SkKEtZ
bit.ly
Stowers Postdoc honored with Wellcome Early-Career Award
The highly competitive award will help Helen R. Horkan, Ph.D., a Stowers Institute postdoctoral researcher, take the first steps to launch her independent…
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Molecular Biology and Evolution @molbioevol.bsky.social · 09/06/2026
Guttieres et al. suggest that core molecular interactions of the cadherin–catenin complex are conserved in ctenophore Mnemiopsis leidyi, suggesting this was an ancestral trait foundational to the evolution of multicellular animals. 🔗 doi.org/10.1093/molbev/msag123 #evobio #molbio
doi.org
Evidence for an early cadherin–catenin interaction network in ctenophores
Abstract. The cadherin–catenin complex (CCC) is a calcium-dependent assembly that is essential for the organization and function of animal cells and tissue
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Tessa Montague @tessamontague.bsky.social · 06/06/2026
Do you know an outstanding aquarist? We're hiring a Senior Aquarist to help run our cephalopod facility at Columbia University. Our team maintains a colony of 250+ cuttlefish, develops new husbandry techniques (inc transgenics) & studies cuttlefish camouflage and social behavior. 1/3 [Pls repost!]
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Ryan Hulett @ryanehulett.bsky.social · 16/04/2026
So good!
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EvoDevo PanAm @evodevopanam.bsky.social · 10/04/2026
Join us 🌟 #EvoDevoMondays 🗓️April 13, 2026 ⏰10am PDT/1pm EDT Speakers 🐌Luiza de Oliveira Saad 🐤 João Francisco Botelho Register here: docs.google.com/forms/d/e/1F... @the-node.bsky.social @latinxdb.bsky.social @lasdb.bsky.social
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Aide Macias-Muñoz @aidemm.bsky.social · 10/04/2026
I am excited to share these results that are now published. Lab researcher Kelso Cochran solved a big problem in the field and optimized a protocol to increase Hydra egg yield in the lab. www.frontiersin.org/journals/eco...
frontiersin.org
Frontiers | Optimizing egg production by trait selection and starvation in Hydra vulgaris
Hydra vulgaris is considered an effectively immortal freshwater cnidarian. As a sister group to all Bilateria, studies of cnidarian genomes offer valuable ev...
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Dr. Lauren E. Fuess @laurenfuess.bsky.social · 08/04/2026
Update: I am definitely hiring 2 PhD students; preference to those who can start spring 2027, but reach out if you’re looking to start in Fall 27. Want to start earlier? Reach out and we can talk about technician positions starting as early as this summer.
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Nat Clarke @natclarke.bsky.social · 01/04/2026
I'm hiring! I have 2 open positions: 🔬 Postdoc 🧪 Research associate We study how animal multicellularity evolved by exploring the molecular logic of cell adhesion using cell biology, 'omics, and tool-building in non-model organisms. Come join us! Details and application links 👇 Please repost
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MultiplEye Lab @multipleye-lab.bsky.social · 24/03/2026
If you'd be interested in a postdoc with us using CT scans of trilobite eyes to model their visual abilities, watch this space...!
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Dr. Lauren E. Fuess @laurenfuess.bsky.social · 20/03/2026
Hi folks, there is a high likelihood I will be recruiting 1-2 PhD students to start in Spring 2027. Trying to get the word out early; please share broadly with your networks and encourage your students to reach out early. Info can be found on my webpage. fuesslab.wp.txstate.edu/opportunities/
fuesslab.wp.txstate.edu
opportunities – Symbiommunity Lab
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Gladstone Institutes @gladstoneinst.bsky.social · 02/03/2026
Final week to apply! PUMAS is designed specifically for community college students ready to gain hands-on research experience at Gladstone. Don’t miss this opportunity to spend your summer in the lab learning from world-class scientists. Apply now ➡️ bit.ly/2UVIaST
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Harvard_MCB @harvardmcb.bsky.social · 02/03/2026
Wendy Valencia Montoya Receives Weintraub Graduate Student Award for Groundbreaking Thesis on the Evolution of Sensory Worlds 🧠 🧪🧬 #AcademicSky #higherEd www.mcb.harvard.edu/department/n... @nbellono.bsky.social @rachellegaudet.bsky.social @basicsci.fredhutch.org @harvardoeb.bsky.social
mcb.harvard.edu
Wendy Valencia Montoya Receives Weintraub Graduate Student Award for Groundbreaking Thesis on the Evolution of Sensory Worlds - Harvard University - Department of Molecular & Cellular Biology
Wendy Valencia Montoya has been named a recipient of the prestigious 2026 Harold M. Weintraub Award in recognition of her doctoral thesis, an ambitious and interdisciplinary body of […]
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Phillip Cleves @pcleves.bsky.social · 02/03/2026
To increase the use of gene editing in corals, we have made a comprehensive methods paper describing the protocol. We hope this helps the field of functional genetics in corals. www.nature.com/articles/s41...
nature.com
Efficient genome editing using CRISPR–Cas9 in reef-building corals - Nature Protocols
In this protocol, the authors present straightforward and efficient methods to genetically modify corals and study gene function throughout various life-history stages using CRISPR–Cas9-based mutagene...
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Dr. Carly Kenkel @drcarl.bsky.social · 24/02/2026
Calling all researchers working on *Genomics of Adaptation to Extreme Thermal Environments* I'm serving as a guest editor of an upcoming collection in BMC Genomics and am eager to read your submission! More on scope and how to contribute here: bit.ly/4kH3PIx 🧪 @springer.springernature.com
bit.ly
Genomics of adaptation to extreme thermal environments
As climate change continues to influence ecosystems around the globe, understanding the genomics of adaptation to hot and cold environments is becoming ...
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Carrie Adler @carrieadler.bsky.social · 28/01/2026
Our new paper reveals critical new regulators of stem cell differentiation that control where the right kinds of cells are made in planarians. In particular, we find Anosmin—a gene responsible for Kallmann Syndrome—as a restrictor of neurogenesis. www.nature.com/articles/s41... #basicresearch
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📑 EvoDevo Papers @evodevo-papers.bsky.social · 14/01/2026
Establishment of a transgenic protocol in Trichoplax adhaerens pubmed.ncbi.nlm.nih.gov/41493084 #EvoDevo
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Thibaut Brunet @thibautbrunet.bsky.social · 12/01/2026
Our research scientist Núria Ros-Rocher won the 1st prize @zeiss-microscopy.bsky.social microscopy contest with this beautiful choano colony www.zeiss.fr/microscopie/... 🥳 C. flexa might not yet be a genetic model, but it is now at least a calendar model, which counts for something. I think.
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imaeso.bsky.social @imaeso.bsky.social · 07/01/2026
Our work on the evolution of the regulatory genome of echinoderms is now out in @natecoevo.nature.com. Led by my former PhD Marta Magri, Danila Voronov & Saoirse Foley. Great collaboration of Arnone, Hinman & Maeso labs, started long time ago with our missed José Luis Gomez-Skarmeta: rdcu.be/eXX8l
rdcu.be
Deep conservation of cis-regulatory elements and chromatin organization in echinoderms uncover ancestral regulatory features of animal genomes
Nature Ecology & Evolution - Analysis of the 3D chromatin architecture and cis-regulatory elements in a sea urchin and a sea star reveals mechanisms of 3D chromatin organization in echinoderms...
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Ryan Hulett @ryanehulett.bsky.social · 07/01/2026
Shout out to the fellow Olga Raikova stan last night
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Aide Macias-Muñoz @aidemm.bsky.social · 06/01/2026
Happening today at 2:30 pm #sicb2026
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Aide Macias-Muñoz @aidemm.bsky.social · 05/01/2026
Interested in transposable elements, genome evolution, and jellyfish? Be sure to check out graduate student Ayanna Mays’ talk TODAY at 11:45 in B114 (first SICB talk!) #SICB2026
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Carl T. Bergstrom @carlbergstrom.com · 02/01/2026
"I don’t know why my fellowship was terminated. I suspect that it has something to do with studying a species that doesn’t fit the binary of what we expect to see in nature, with completely different males and females." @carlzimmer.com profiles my wonderful coauthor @jjinsing.bsky.social Gift link.
nytimes.com
He Studied Why Some Female Birds Look Like Males
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