There were more people at the DNR Fish Pond at the 2025 Minnesota State Fair (as there should be)! Their Reflecting Pool was much clearer too…AND HAD GAR 😎👍

📣 Meeting announcement - the SDB Southwest Regional meeting will be at the University of Utah from March 5-7, 2027! Developmental biologists from Denver to Mexico City and from Reno to New Orleans, join us to share your research and celebrate our community. Details soon. @socdevbio.bsky.social

Spectacular preprint led by @sydsat.bsky.social in @ohnolog.bsky.social lab, @uwgenome.bsky.social. Neutrophils precede gastrulation in killifish and rapidly patrol the yolk. (1/2)

Cool new tool from Keir Balla Lab @czbiohub.bsky.social 🐟🧬 Give it a try: portal.rnaquarium.org

(1/X) Assembling a time- and embryo-resolved sci-RNA-seq atlas of (slow) medaka development from blastula to hatch, we use comparative analysis of (fast) zebrafish to understand global + cell type-specific trends in developmental timing. Excited to get this resource out to the fish community!

What? You heard SUFS made wheatpasting posters? We totally DO NOT have wheatpasting posters on our website for you to print at home and totally DISCOURAGE you from pasting them! DO NOT visit the link in our bio or this link to print them: zurl.co/QHtb4 Learn how to avoid wheatpasing below! 🧵

Our new paper on interferon signaling during the response to heart injury is out today. doi.org/10.1242/bio....

HySIL / pLSM-SCOPE / SLICE work out now in Nature Biotechnology (open article)!

At 10k followers I start spilling the tea on model organisms starting with frogs

Have you ever wondered if fish yawn? (and if they do, what that tells us about yawning?) The first preprint from the lab and a serendipitous observation ⬇️ www.biorxiv.org/content/10.6...

🚨The Kasper lab is hiring! Funded positions for a postdoc and research assistant.🚨 We study regulatory mechanisms regulating vascular and hematopoietic development using zebrafish 🐟. For postdocs, contact me [email protected]. For RAs, apply here: searchjobs.dartmouth.edu/postings/85822

A fascinating video about the return of riparian habitats as Lake Powell water levels drop. youtu.be/eMaa0vEAbZA?...

Single Cell Genomics Day: A (Virtual) Practical Workshop. June 12, 2026, organized by @nygenome.org's Rahul Satija Free, livestreamed, no registration.

Excited to share the published version of MIC-Drop-seq @natcomms.nature.com! Shoutout to co-lead authors @claycarey.bsky.social @sparvez.bsky.social for driving this work. Excited to see where this new scale of single-cell perturbation screening goes next. www.nature.com/articles/s41...

How do sperm and egg fuse? Surprisingly, we still don’t fully know… Our field has uncovered many pieces of the fertilization puzzle, but not how they fit together. We identify ✨ SPARK ✨ - a conserved sperm complex that couples sperm-egg binding to fusion. tinyurl.com/34cm4xat Read on! 🧵👇

Support a great cause. Spread the shrimp gospel. Everyone wins.

Do you know any students who are planning to apply to graduate school this cycle? Encourage them to apply to the Biology Preview Program! We provide intensive workshops to help students w/ their applications + 1:1 mentorship.

🎉 The new #SDB Merch Store is officially LIVE! 👕🧢☕ Grab your favorite SDB gear including t-shirts, sweatshirts, caps, mugs & more ✨ 🛍️ Visit the store via the SDB homepage or shop directly here: sdb-official-merch.printify.me Show off your dev bio pride 🔬🧬🐟 #DevelopmentalBiology

Help needed! Does anyone have experience extracting nuclei from flash frozen tissue? Especially helpful if it is fish skin or tail tissue! We are trying to get some precious melanoma samples processed for snRNAseq but are having issues with either nuclei number and/or quality

LEARN THE TRUTH NOW 🥵🐟

New preprint from the lab, led by Bradley Cutler. With the @james-gagnon.bsky.social lab we use zebrafish to show that fever is not a reduction in the perception of warmth. Immune signals instead increase the valence of warming stimuli while cooling turns aversive. www.biorxiv.org/content/10.6...

Open-rank search: 2 (!) PI positions in Pulmonary Biology at @cuanschutz.bsky.social 🌄 We are looking for new colleagues @cupediatrics.bsky.social, working in lung fibrosis, focusing on #devbio, stem cell, & regen.biology of the lung 🫁🫀. Please help spread the word! cu.taleo.net/careersectio...

(1/15) Thrilled to share new Evo-Devo work where we address the molecular, cellular & morphometric basis of an extreme axis segmentation program in the Japanese eel — an animal that forms 120 vertebrae.

I'm very sad to share that my advisor and colleague Jim Keener has passed away. Jim's impact on mathematical biology, through his writing and prolific mentorship, is hard to overstate. I'll write more personal reflections soon, but given his influence on so many, I wanted to share the news.

Applications due tomorrow!

Using light-activated CRISPR in zebrafish, we triggered synchronized DNA breaks and track the repair process. ⚡🐟⚡ 

 Well ... DNA repair is very different in embryos compared to tissue culture cells. Embryos repair DNA breaks incredibly fast - within minutes! www.biorxiv.org/content/10.6...

🐸Do salamanders need adaptive immunity to regenerate limbs and tails? 🐸 Nope! 🚨Check out back-to-back pre-prints from PhD student in our lab Chimezie (tinyurl.com/42wst3bh) and from our collaborators the Max Yun lab (tinyurl.com/b92rzwzr)

Please share widely! We will imminently be posting a technician position in our lab group since @rheasood.bsky.social is off to grad school 🙌! If you know of anyone excited about molecular biology, evolution, and functional genomics please have them reach out (schumer at stanford). Start date ~June

A very moving tribute to one of the founders of modern Stem Cell Biology: Gail Martin. Well worth a read. www.pnas.org/doi/10.1073/...

Excited to share a new review by @kocherlab.bsky.social and me: Nature-inspired neuroscience We discuss diverse sensory systems and behaviors across the animal kingdom and argue for their integration into neuroscience. New tools in diverse systems are making this possible ✨ tinyurl.com/y5y9du27

Did you know the Santa Cruz Developmental Biology Meeting has an entire session just for NEW PI Talks? And a New PI Keynote Talk? It does! These will be chosen from the abstracts. New PIs, sign up! @socdevbio.bsky.social @rashmi-priya.bsky.social @lowelab.bsky.social scdb2026.sites.ucsc.edu

In 1936, a U.S. Forest Service ranger was fishing high in the Utah mountains when he found something bizarre: Cutthroat trout with tiny - or missing - dorsal fins! 🧵

Once-Adventurous Salmon Can’t Believe She Ended Up Moving Back To Birthplace, Having A Bunch Of Kids https://theonion.com/once-adventurous-salmon-can-t-believe-she-ended-up-movi-1825827223/

Very happy to share this study from our group and colleagues now out in Science! We found that in zebrafish, before the immune system is mature, gut epithelial cells perform immune functions by producing the cytokine IL-22 to shape the microbiota to promote early life gut function #Zebrafish #Gut

Students from the MBL's Embryology course cleared this turtle embryo last year using LifeCanvas Technologies Inc.'s SmartBatch+, labeled with acetylated tubulin to visualize the nervous system, and imaged with the #MegaSPIM light-sheet microscope. #microscopy

“Here we present ZMAP (Zebrafish Meta Atlas Project), a harmonized reference integrating 8 published whole-embryo zebrafish scRNA-seq datasets comprising 798,790 cells across 15 developmental time windows.” 🐟 🧪 New work from @danwagnerlab.bsky.social 🔗 to WebApp: wagnerlabucsf.github.io/zmap/

📢📢 My lab at @utah.edu is officially open and I'm RECRUITING — especially techs/specialists and postdocs! Our research focuses on the neurobiology of interoception and learning & memory using tools from systems/comp neuro. Please share! 🧠🏔️🏜️ Apply/more info: zimmerman-lab.org#positions

Signatures of sex ratio distortion in humans https://www.biorxiv.org/content/10.64898/2026.02.04.702084v1

It gives me comfort that my weird science obsessions protect me from the algo. Like, sorry honey, you're gonna have to sort a whole bunch posts about hagfish slime before you figure out what brand of sweatpants I prefer.

I’m recruiting new members to the Farrell Lab this summer. We will have space for 1 postdoc (since Abhinav is leaving to start his own lab at U Arizona!!) and 2 postbacs, since my current two will leave for PhD programs at the end of the summer. More details in thread:

Is this the greatest thread in the history of science blue sky?

She uses the bristled end of a deck brush on her back and hindquarters, using repeated place-and-pull motions. For more sensitive areas such as the belly flap, udder, and anal region, she switches to the stick end, using careful, repeated poke-and-lift movements. See video link: youtu.be/bAk4PFEuWKQ

Don't miss out. Apply to our 2026 Advanced Research Training Courses today!

Defending PhD student, looking over their thesis: “If I knew then what I know now, I could’ve done all of this in like 9 months.” A thread about my favorite pioneering cave explorers and why I don’t think AI will ever “solve” biology.

Over the past weeks I have been reading the earliest papers on zebrafish development, and came to realize that in the “canonized" version of zebrafish history we neglect some important people pre-Streisinger. I will try to correct here the record. Let’s start with Edward C. Roosen-Runge. (1/7)

Happy Coelacanth Day!

Happy to highlight an essay I wrote together with @marcdemanuel.bsky.social, @natanaels.bsky.social and Anastasia Stolyarova, trying to think through what sets the mutation rate of a cell type in an animal species: www.biorxiv.org/content/10.6... 1/n

She let me know that they recently received guidance that, ONLY for the January EI deadline (1/27/2026) and the February ESI deadline (2/3/2026), PIs can submit MIRAs even if their previous application (R35, R01, R15, R21, and R37) is still considered under review.

I was today years old when I learned that there is a superb (freely available) documentary from 1961 on early zebrafish development by J.V. Durden. collection.nfb.ca/film/embryon... (1/2)

FYI - if you already have a pending MIRA application, you need the summary statement in hand by Jan 27th to hit this first FOA deadline.