Allan Carrillo-Baltodano

Cover of the book mentioned in the post

I’m looking forward to getting stuck into this! ‘Atlas of Marine Invertebrate Larvae’ eds M.Boyle, C.Young and M.Sewell

After 5 years of sample collection and analysis our paper examining the impacts of an industrial #DeepSea mining trial on seafloor #biodiversity is published! Read here: www.nature.com/articles/s41...

I’m FABULOUS, says this polychaete (bristle worm) larva!

#marineplankton 🦑

Terebellid worm against a black background. It has a lot of white tentacle-like appendages at the front that curl into little springs and curls. A bit behind there's a pair of tree-like branchae. The first few segments are thickened with prominent (but small) parapodia(?). Behind that the animal gradually gets thinner and smoother. It starts out a fleshy pink colour with brighter reds and oranges towards the middle of the worm and transparent at the back. It currently has a bit of sediment in its guts which gives the transparent part a brown appearance.

With Crustmas going on right now, it's easy to forget that it is #WormWednesday, too!
This is an unidentified Terebellid worm. It may be Amphitrides gracilis, but I'm far from certain.

#MarineLife #Polychaete #Worm

The new issue @cp-devcell.bsky.social brings the final form of our opossum heterochrony work www.cell.com/developmenta... And it also brings two great papers from @oliveringe.bsky.social @santoslab.bsky.social and @tobyandrews.bsky.social @rashmi-priya.bsky.social 🙌 great #DevBio from @crick.ac.uk

A Sabellariidae polychaete (bristle worm) larva.
#marineplankton 🦑

🔔 Please share 🔔 I have two open developmental biology/genetics/evo-devo PhD project vacancies for October 2026 start.

1 = 🐚 🐌 🔬(embryos!!)
⏱️📆 DEADLINE 15th DEC 📆⏱️ (competition)
sleightlab.com/vacancies/

2 = 🦪 🐌 🧬
⏱️📆 DEADLINE 14th JAN 📆⏱️(fully funded)
sleightlab.com/phd-vacancy-2/

Freshly out at @natcomms.nature.com ! Our @univie.ac.at @awi.de @viennabiocenter.bsky.social @ercgrantees.bsky.social research into neurogenic plasticity of adult worm brains, and similarities in stem cells supporting growth of camera-type eyes. www.nature.com/articles/s41... [1/7]

Panel 1. A worm wriggles along watched by a human. It asks: "What are you doing?" Panels 2 to 5. Scientist "I'm studying you. I'm a biologist. Just carry on as if I'm not here." Worm "I feel self-conscious now... What was I doing when you got here?" Scientist "Just wriggling along" Worm "Shall I go back to doing that?" Scientist "I suppose so." Panel 6. The worm is wriggling again. Both the worm and scientist are thinking: "This feels weird now..."

My cartoon for this week’s New Scientist.
p.s. I have a new book of science cartoons: www.tomgauld.com/comic-books-v2

A tv screen showing a flying to San José, Costa Rica

"todos vuelven" 🇨🇷

Exciting SWBio PhD opportunity to study cell signalling in marine diatoms during heat stress. Deadline 3rd December 2025 @swbiodtp.bsky.social @kehelliwell.bsky.social @thembauk.bsky.social @exetermarine.bsky.social

A chromosome-level assembly and functional genomic resources for the model annelid Capitella teleta https://pubmed.ncbi.nlm.nih.gov/41279112/ #EvoDevo

Gene editing without a genome: generation and validation of F0 CRISPR mutants in gastropod mollusc Crepidula fornicata https://www.biorxiv.org/content/10.1101/2025.11.26.690768v1

Very happy to announce that our article in multimodal single cell analyses in planaria is out in Nature Communications @natcomms.nature.com ! Thank you very much to everyone that made this work possible. I am very happy to see it out (: www.nature.com/articles/s41...

These little orange goobers always cheer me up! The larva of a Serpulidae polychaete (bristle worm).
#marineplankton 🦑

3 different flavours of Polychaeta (bristle worms) in one friendship group! The biggest is from the family Spionidae, the orange one was featured is yesterday’s post, from the family Serpulidae, and the littlest is a mystery to me!
#marineplankton 🦑

The Hydractinia Genome Project Portal: multi-omic annotation and visualization of Hydractinia genomic datasets AbstractMotivation. The colonial hydroid Hydractinia exhibits several unique biological properties, including its remarkable regenerative capacity and the

We've updated our Hydractinia Genome Project Portal! The site includes genomic, transcriptomic, and proteomic datasets, genome browsers, an interactive single-cell gene expression atlas, proteome-scale structure predictions, a custom BLAST interface, and more. Check it out! tinyurl.com/hydractinia

#PASEDB community✨

Welcome to our newly elected PASEDB executive council members @kathykavanagh.bsky.social @ischneider.bsky.social @fishevodevogeno.bsky.social @fishfena.bsky.social

Thrilled to have you join us and are looking forward to working with you!

🧬 10 @dfg.de-funded PhD positions at @goettingen-campus.de 🧬
❗Focus: Evolution of gene regulatory networks & Wnt signaling in emerging models (insects, snails, flatworms, cnidarians).
💻 Methods: 'Omics, Bioinformatics, CRISPR/RNAi & Imaging.
📌Start: June 2026.
#EvoDevo #Genomics #Bioinformatics

Q & A Interview with Cassandra Extavour, who studies the evolution of the genetic mechanisms employed during early animal embryogenesis to specify cell fate, development, and differentiation at Harvard Univ...

Check out our latest issue where we interview Cassandra Extavour, who studies the evolution of the genetic mechanisms employed during early animal embryogenesis to specify cell fate, development, and differentiation at Harvard University. www.cell.com/current-biol...

Separation of the Early gastrula into oral and aboral halves shows that some neural cell tupes derive from aboral ectoderm, and others from i-cells

Drawing together findings from several projects over many years, we make a case that neural cell types in the Clytia larva have two embryological origins: i-cells and ectodermal.
bioRxiv 2025.11.17.688882; doi: doi.org/10.1101/2025...

Dual origins for neural cells during development of the Clytia planula larva https://www.biorxiv.org/content/10.1101/2025.11.17.688882v1

Adenine DNA methylation associated with transcriptionally permissive chromatin is widespread across eukaryotes - Nature Genetics Long-read sequencing in 18 unicellular eukaryotes reveals that 6mA is widespread across eukaryotes and is enriched at transcriptionally permissive regions, which are also marked by H3K4me3.

Out today, our take on 6-methyladenine #6mA evolution in Eukaryotes @natgenet.nature.com. We asked a simple question, is really DNA 6mA common across the eukaryotes? The answer is "yes" if you're a unicellular eukaryote 🦠, not so if you're multicellular 🐝🌱🍄. www.nature.com/articles/s41... 1/9

Ectopic head regeneration after nervous system ablation in a sea anemone Via genetic ablation of neurons, Mazloumi Gavgani et al. show that the nervous system is essential for defining axial polarity during whole-body regeneration in the sea anemone Nematostella vectensis.

Our paper on the role of neurons in Nematostella head regeneration is now out at @currentbiology.bsky.social Big thank you to all collaborators, it was a pleasure!

Ectopic head regeneration after nervous system ablation in a sea anemone: Current Biology www.cell.com/current-biol...

Glad to see our phoronid genome study featured on the cover of @currentbiology.bsky.social! It shows how genome structure can be used to test competing hypotheses of nested topology and how derived structural changes provide evidence for monophyly.

www.cell.com/current-biol...

Looking forward to giving this talk. See you all on Tuesday!

Join our upcoming course on cutting-edge evolutionary & genomic methods for Evo-Devo studies!
We'll cover: comparative & single-cell transcriptomics,ATAC-seq, phylogenomics, comparative genomics, gene regulation, and much more
Spots still available: sites.google.com/view/evodevo...

A comic panel from Watchmen, showing a partially muscled skeleton (Dr Manhattan) screaming in pain in front of two horrified security guards. Text reads: “November 14th: a partially muscled skeleton stands by the perimeter fence and screams for thirty seconds before vanishing…”

Happy partially muscled skeleton screaming before vanishing day to all those who celebrate.

I will be participating in this EvoDevo course in Madrid, organised by @patrialvarezcam.bsky.social and other colleagues.

sites.google.com/view/evodevo...

I will be covering scRNA-seq, other topics are transcriptomics, ATAC-seq, phylogenomics

Registration closes on Nov 20!

Dates: Dec 15-18