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Reposted by Cnidarian developmental mechanisms group

Max Telford @maxjtelford.bsky.social · Jul 11

Is the deuterostome clade an artifact???

New paper with first author @anaserrasilva.bsky.social, Laura Piovani, Paschalis Natsidis and project co-led by Paschalia Kapli.

www.sciencedirect.com/science/arti...

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Jul 11

Bravo @juliarmateu.bsky.social et @annaferraioli.bsky.social, merci à Richard Copley pour ce travail co-dirigée, et merci aux collaboratrices coralistes Isabelle Domart-Coulon (MNHN, Paris) et Núria Teixidó (LOV, et Ischia Marine Center, Stazione Zoologica Anton Dohrn)

Anti-LWamide staining of the aboral (anterior) end of a Clytia larva

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Jul 7

for the moment the application site seems to be in french only www.embrc-france.fr/en/node/9845

Appel 2026 pour l'accès aux services et ressources d'EMBRC-France | EMBRC France

ELIGIBILITÉ A travers cet appel, EMBRC-France s’adresse préférentiellement, mais pas exclusivement, à tout chercheur n’ayant jamais bénéficié de l’Infrastructure de Recherche (IR). L’IR privilégiera a...

www.embrc-france.fr

Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Jul 7

Interested in visiting Villefranche, Roscoff or Banyuls marine stations? The EMBRC-France (www.embrc-france.fr) 8th Call for Projects is open. Deadline Sept 19 for stays by end of June 2026. Up to 42 person-days per project are covered, with access to EMBRC-France services, accommodation & catering.

Accueil | EMBRC France

www.embrc-france.fr

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Reposted by Cnidarian developmental mechanisms group

Julia Ramon Mateu @juliarmateu.bsky.social · May 17

Excited to finally see my PhD work published! We identified specialized cells in jellyfish and coral larvae with shared features and potentially linked to settlement regulation.

Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · May 17

"Aboral cell types of Clytia and coral larvae have shared features and link taurine to the regulation of settlement" Kudos to Julia Ramon-Mateu and Anna Ferraioli @biodev-vlfr.bsky.social, and thanks to our collaborators for their coral larva expertise www.science.org/doi/10.1126/...

Aboral cell types of Clytia and coral larvae have shared features and link taurine to the regulation of settlement

Larvae of jellyfish and corals have specialized sensory cells with shared features potentially linked to settlement regulation.

www.science.org

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Reposted by Cnidarian developmental mechanisms group

Casey Dunn @caseywdunn.bsky.social · May 13

Our chromosome-scale genome assembly of Nanomia septata, a siphonophore - doi.org/10.1101/2025... . Much larger than many other cnidarian genomes, fewer chromosomes, and highly rearranged. No smoking gun for how they achieve complex colony-level organization. Great work Namrata Ahuja and friends!

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · May 17

Careful scRNAseq and characterisation of cell types from larve of 3 cnidarian species uncovered shared features. This work can help understanding of animal nervous system evolution, and identified potential regulators of larval settlement !
Bravo @juliarmateu.bsky.social @annaferraioli.bsky.social

Examples pf Coral larva aboral cell types

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · May 17

"Aboral cell types of Clytia and coral larvae have shared features and link taurine to the regulation of settlement" Kudos to Julia Ramon-Mateu and Anna Ferraioli @biodev-vlfr.bsky.social, and thanks to our collaborators for their coral larva expertise www.science.org/doi/10.1126/...

Aboral cell types of Clytia and coral larvae have shared features and link taurine to the regulation of settlement

Larvae of jellyfish and corals have specialized sensory cells with shared features potentially linked to settlement regulation.

www.science.org

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Reposted by Cnidarian developmental mechanisms group

Max Telford @maxjtelford.bsky.social · May 12

New entry into the sponge/ctenophore debate.... Have the chromosome fusions separating ctenophores from all other animals been given too much weight? Beautifully clearly written paper covering complex arguments from @rcply.bsky.social.
www.biorxiv.org/content/10.1...

Sponges, ctenophores and the statistical significance of syntenies

Shared fusions between ancestral chromosomal linkage groups have previously been used to support phylogenetic groupings, notably sponges with cnidarians and bilaterians to the exclusion of ctenophores...

www.biorxiv.org

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Reposted by Cnidarian developmental mechanisms group

Max Telford @maxjtelford.bsky.social · Apr 24

It's publication day of my first book: The Tree of Life. The tree of life is a time machine that can take us back 4 billion years to meet our most distant ancestor. It is the magic that lets us tell the origin stories, beginning with this ancient relative, of everything from mushrooms to man.

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · May 5

Intriguing findings from our Sendai collaborators Ruka Kitsui and Ryusaku Deguchi. While C. hemispherica spawns at dawn, Clytia IZ-D species spawns at dusk. This is not triggered by dark but, unexpectedly, by light-mediated extension of an autonomously-running 20h cycle. doi.org/10.1101/2025...

Cartoon of autonomous and light-modulated spwning cycles in Clytia IZ-D

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Reposted by Cnidarian developmental mechanisms group

genikhovich.bsky.social @genikhovich.bsky.social · Mar 4

www.nature.com/articles/s41...

The Hydractinia cell atlas reveals cellular and molecular principles of cnidarian coloniality - Nature Communications

Here they generate a cell type atlas of the colonial cnidarian Hydractinia symbiolongicarpus, which reveals that distinct colony parts are mostly made from unique combinations of shared cell types, an...

www.nature.com

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Reposted by Cnidarian developmental mechanisms group

CNRS Biologie @cnrsbiologie.bsky.social · Feb 28

🤝 @cnrscotedazur.bsky.social @sorbonne-universite.fr @clytia-vlfr.bsky.social

Lire l'article dans @elife.bsky.<a href="https://buff.ly/439XGxG" class="hover:underline text-blue-600 dark:text-sky-400" target="_blank" rel="noopener">social
👉 buff.ly/439XGxG

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Jan 29

Now out as a Reviewed Preprint on eLife - Thanks to the reviewers for their positive and constructive assessments! elifesciences.org/reviewed-pre...

Planar cell polarity coordination in a cnidarian embryo provides clues to animal body axis evolution

elifesciences.org

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Reposted by Cnidarian developmental mechanisms group

Nicolas Minc @minclab.bsky.social · Jan 3

Our lab has multiple open positions for post-docs to study the regulation and function of cytoplasm mechanics during embryo development.
Details below 👇👇
Please Repost !!!

@ijmonod.bsky.social @cnrs.bsky.social

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Jan 9

This will be great !

Arnau Sebé-Pedrós @arnausebe.bsky.social · Jan 8

Monod Conference "Origin of metazoans": fossils, genomes, cell biology, gene regulation, development, and more.

Join us in Roscoff for an exceptional speaker line-up and stunning venue!

🗓️Abstract deadline: March 4.

Register and share!
www.insb.cnrs.fr/fr/origin-me...

Origin of metazoans

Roscoff (Bretagne), France, June 16-20, 2025Deadline for application: March 4, 2025

www.insb.cnrs.fr

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Reposted by Cnidarian developmental mechanisms group

cnidofest.bsky.social @cnidofest.bsky.social · Jan 7

Big exciting news! The next Cnidarian Model Systems Meeting, better known as Cnidofest, will be held at the Marine Biological Laboratory from September 23-27, 2026. Mark your calendars!!! After two land-locked meetings, we are returning to an ocean view!!! 🌊🪸 @mblscience.bsky.social

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Reposted by Cnidarian developmental mechanisms group

@MEmilieTerret @memilieterret.bsky.social · Jan 3

Happy 2025!
Jellyfish in Paris @clytia-vlfr.bsky.social

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Jan 4

Happy New Year Marie-Emilie!

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Reposted by Cnidarian developmental mechanisms group

Development @dev-journal.bsky.social · Dec 16

ARPP19 phosphorylation site evolution and the switch in cAMP control of oocyte maturation in vertebrates

Read this Research Article by Ferdinand Meneau, Marika Miot and colleagues @clytia-vlfr.bsky.social:
https://doi.org/10.1242/dev.202655

Figure 1 (C) In situ hybridization detection of ClyARPP19 mRNA in a whole newly budded young medusa recently released from the polyp colony, and an adult ovary. Cartoons show tissue organization. ARPP19 mRNA is strongly detected in oocytes, around the bell rim where the nerve rings are positioned, and at the sites of neural stem cell populations. (D) Confocal images of Clytia oocytes stained with the anti-XeENSA antibody (a) or with the anti-XeENSA antibody pre-absorbed with ENSA protein (b). In each pair, images in the left are of anti-ENSA staining and images on the right are of DNA stained with Hoechst. The oocyte nucleus (GV) is positioned opposite the attached gastrodermal cells (gas)

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Reposted by Cnidarian developmental mechanisms group

Iñaki Ruiz-Trillo @multicellgenome.bsky.social · Dec 10

#Multicellularity enthusiasts! Mark your calendars! EMBO Workshop on "Evolution and Origins of Multicellularity Across the Tree of Life"
📅 October 9-11, 2025, Barcelona

🔗 Pre-register here: coming-soon.embo.org/w25-102

@csic.es @embopress.org
www.youtube.com/watch?v=uxKj...

EMBO meeting

YouTube video by Multicellgenome Lab

www.youtube.com

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Reposted by Cnidarian developmental mechanisms group

Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · Dec 8

A few days left to apply 🙌🏻

Lionel Christiaen, PhD (he/him/his) @lionlchristiaen.bsky.social · Nov 10

At the Michael Sars Centre, 📢 We are hiring Group Leaders! 🌊
Come join our team @UiB to lead innovative research in molecular, cellular and organismal biology using marine/aquatic organisms! ⌛️ Application deadline Dec. 15. Share this exciting opportunity ⤵️
tinyurl.com/4bwn8u3n @embl @EMBRC_EU

Group Leader Positions (Researcher I, code 1110) (270380) | University of Bergen

Job title: Group Leader Positions (Researcher I, code 1110) (270380), Employer: University of Bergen, Deadline: Sunday, December 15, 2024

tinyurl.com

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Dec 7

For anyone interested in how Metchnikoff's early studies in embryology linked to his later work on macrophophages and immunity, here is a nice account from Ibon Cancio from Bilbao. Illustrating again how marine stations are incubators for curiosity-led research 😉 www.embrc.eu/newsroom/new...

The value of friendship in marine science: Kovalevsky, Metchnikoff and kinship among embryos in evolution | EMBRC

Kovalevsky & Metchnikoff: a tale of two friends who were essential to understanding evolutionary embryology and physiology!

www.embrc.eu

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Dec 7

That was another nice find -thanks John. We love Metchnikoff too -especially for his substantial contribution to invertebrate embryology, including of course this !

Metschnijkoff -Embryologische Studien an Medusen https://catalog.hathitrust.org/Record/006714171

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Cnidarian developmental mechanisms group @clytia-vlfr.bsky.social · Dec 7

How come PKA signalling has opposite roles for oocyte maturation in vertebrates compared to many other species? We unpicked this “cAMP paradox” in a cross-species collaboration, charting phosphorylation site evolution of the key regulator ARPP19. Meneau et al. DOI: 10.1242/dev.202655

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