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Marie Walde 🌊🦠🔬

@mariescopy.bsky.social
662 followers 552 following 51 posts

Biophysicist using #microscopy and image analysis to study marine microbes @roscoff-collection.bsky.social Co-founder of @biotraces-dna.bsky.social 🦣 ecoevo.social/@mariescopy 🔬 mariescopy.github.io 📑 orcid.org/0000-0002-4071-7677

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Reposted by Marie Walde 🌊🦠🔬
Mill_lab @cilialab.bsky.social · 08/10/2026
Microscopy images are scientific evidence, and that image processing must be transparent and faithful to the underlying biology. Reinforce those standards, especially now-insist Nikon uphold them. #NikonSWiM2026 Read the letter: tinyurl.com/OpenLetterSW... Add your name: forms.gle/TyGRELnCxq5z...
tinyurl.com
Open letter to Nikon Small World in Motion
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Glen Wheeler @glwheeler2.bsky.social · 05/10/2026
Fantastic to see the Nobel Prize awarded for the discovery of channelrhodopsin which arose from Peter Hegemann's studies of algal motility. Here is a Chlamydomonas cell celebrating with some flagella calcium signals!
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Reposted by Marie Walde 🌊🦠🔬
Karl Deisseroth @deisseroth.bsky.social · 05/10/2026
Thank you to everyone sharing in this moment! I’m so grateful to all my trainees & collaborators… dlab.stanford.edu/group-members (pic: Peter and I together in 2017) Reading for all those asking: for technical details: dlab.stanford.edu for everyone: deisseroth.org/projections
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Nobel Prize @nobelprize.org · 05/10/2026
BREAKING NEWS The 2026 Nobel Prize in Physiology or Medicine has been awarded to Karl Deisseroth, Peter Hegemann and Georg Nagel “for their discoveries concerning light-gated ion channels and optogenetics.”
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Simon Cleary @simoncleary.bsky.social · 01/10/2026
Nikon: '"At this time, we don't see that any rules were violated," it said in a statement.' www.bbc.co.uk/news/article...
bbc.co.uk
Tiny image sparks big backlash in Nikon photo contest
Dr Ning Xu denies he broke the rules of Nikon's annual Small World In Motion contest.
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Iñaki Ruiz-Trillo @multicellgenome.bsky.social · 28/09/2026
We have a new branch in the family tree of animals: Atreyea- a previously unrecognized lineage among the closest unicell relatives of animals. Led by @konsmitsi.bsky.social & @freejakoba.bsky.social together with a fantastic team of collaborators. 🔗 papers.ssrn.com/sol3/papers.... #protistsOnSky
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 28/09/2026
I am really enjoying your polarised images and might try it out too :D
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Reposted by Marie Walde 🌊🦠🔬
Valentin Dunsing-Eichenauer @dunsingvalentin.bsky.social · 25/09/2026
#FluorescenceFriday: Given the recently grown interest in ciliary beating, here is a movie of beating cilia in a human airway model that I captured last week with lattice light-sheet microscopy. No AI „processing“, this is the raw data! Frame rate is ca. 170fps, displayed here at 25fps.
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Reposted by Marie Walde 🌊🦠🔬
napari @napari.org · 26/09/2026
🚀 napari is hiring Remote Developers-in-Residence! Join us to build the future of interactive n-dimensional data visualization in Python. 💻 60% Dev / 20% Maintenance / 20% Community & Outreach ⏱️ Contract, 14–35 hrs/wk 🌍 Global 100% Remote Learn more and apply today: napari.org/island-dispa...
napari.org
We’re hiring Developers-in-Residence! — napari blog documentation
Organization: napari (a NumFOCUS Sponsored Project) Position Type: Independent contractor agreement. Global, 100% Remote. Duration: One year, possibility to extend. Commitment: 0.4 to 1.0 FTE…
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 25/09/2026
I think what troubles me most is that I dont have the feeling the author had the intention to cheat (I read all the comments on LinkedIn, too)... What does it mean for science if, as academics, we use tools whose limitations we do not understand and cannot critically question the "results"? 😬
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Christophe 🔬 Leterrier @christlet.bsky.social · 22/09/2026
From the new info my bet is fluo labeling inference pushed to 11. Hallucinating nonsensical DAPI nuclei, mitochondria stain, membrane labeling from a kind of phase contrast image: wrong localization, wrong scale, wrong movement. Keeping this movie as SWiM winner is a disgrace to the competition
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Reposted by Marie Walde 🌊🦠🔬
paveltomancak.bsky.social @paveltomancak.bsky.social · 18/09/2026
In light of this growing controversy, I would like to direct attention to the stunning videos 2-31! www.nikonsmallworld.com/galleries/20...
nikonsmallworld.com
A tiny roundworm and a single-celled Dileptus explore their microscopic world | 2026 Small World in Motion Competition
Nguyen Nam Nhat - A tiny roundworm and a single-celled Dileptus explore their microscopic world
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 18/09/2026
The #microscopy community has serious concerns about this year’s winning #NikonSmallWorld in Motion video. @healthcare.nikon.com, could you please comment on the raw data and acquisition process to clarify whether AI was used? Transparency would help maintain confidence in the competition.
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 18/09/2026
It would be interesting for to see that original video www.nikonsmallworld.com/galleries/sw...
AI generated videos are not permitted and Sponsor holds the right to request the original video for verification.
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 18/09/2026
which, I believe, would still be against the rules of this particular competition 🤷‍♀️ www.nikonsmallworld.com/galleries/sw...
AI generated videos are not permitted and Sponsor holds the right to request the original video for verification.
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 18/09/2026
I would have naïvely assumed that one must provide the corresponding raw data before the announcement of the winners... ? 🤔
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 13/09/2026
@jennifer1beatty.bsky.social This might interest you, too 😬
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 12/09/2026
"The most precious resources of our profession are students and ideas, [...] solving problems is only a tool and proxy for achieving the primary goal of conceptual understanding and insight."
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Reposted by Marie Walde 🌊🦠🔬
John Dolan @tintinnman.bsky.social · 12/09/2026
Sobering!! www.techtimes.com/articles/326...
techtimes.com
AI Paper Mills Now Taint One in Ten Cancer Studies: France Cuts Big Publisher Ties
AI paper mills now show up in nearly one in ten cancer research papers screened by machine learning, a 2026 BMJ study found, prompting France’s CNRS to cancel commercial database contracts and warn th...
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 10/09/2026
Maybe your prompts are just too sane and reasonable x)
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 09/09/2026
Congrats! Sounds like a really exciting project :D
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Reposted by Marie Walde 🌊🦠🔬
Christophe 🔬 Leterrier @christlet.bsky.social · 08/09/2026
So... an academic and an Anthropic employee used LLMs (including OpenAI models) to make decisive progress on the Navier Stokes resolution. Then OpenAI claimed to have done it and will not clearly disclose if it used access to the two researchers' LLM sessions to do so cims.nyu.edu/~tristanb/st...
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Reposted by Marie Walde 🌊🦠🔬
Julia Van Etten @couchmicroscopy.bsky.social · 13/07/2026
Cool video about the nitroplast that’s also a testament to why basic science is important! youtu.be/g9B3gBhcwqM?...
youtu.be
This cell just changed biology
YouTube video by Grist
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Julia Van Etten @couchmicroscopy.bsky.social · 04/09/2026
Our paper describing two new photosynthetic Paulinella species is out today in JPhycol! This is the kind of work I love to do and even it though took many years to finish, we had a lot of fun stomping around together in the marsh! onlinelibrary.wiley.com/doi/10.1111/... #protistsonsky
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Saloni @scientificdiscovery.dev · 05/09/2026
This is interesting. You get assigned to being born at a random place and time in history, to see what a typical person's life might have been like then. Unfortunately I was born in 1403 in the valley of Mexico and died at age 4 from dysentery.
anyhumanever.com
Any Human Ever
One life, drawn at random from all who have ever lived.
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Chloe Girard, PhD @chloegirard.bsky.social · 02/09/2026
I support Wikipedia, where information is still human-created, fact-checked, and 100% free. Join me! donate.wikimedia.org
donate.wikimedia.org
Make your donation now - Wikimedia Foundation
Donate to the Wikimedia Foundation, the nonprofit that hosts Wikipedia and other crucial free knowledge projects. Each year, the generosity of the 2% of readers who donate allows us to expand the reac...
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Reposted by Marie Walde 🌊🦠🔬
Dewi Langlet @dewilanglet.bsky.social · 21/08/2026
I'm happy to share two new #symbiosis papers freshly out of the press: - Symbiont shuffling in foraminiferal holobiont doi.org/10.1093/isme... #foramfriday - Ciliates symbionts in #deepsea shrimps doi.org/10.1111/jeu....
doi.org
Thermal responses and Symbiodiniaceae shuffling in a Red Sea foraminifer holobiont
Abstract. Symbiont-bearing benthic foraminifera, like corals, rely on endosymbionts for growth and nutrition and experience bleaching under heat stress. So
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Reposted by Marie Walde 🌊🦠🔬
jerome mutterer @jmutterer.bsky.social · 28/08/2026
I've made a video about Fig_Space, the next version of FigureJ. It has nice new features, I hope you like it. youtu.be/bTKcXN4p-JM
youtu.be
FigSpace Fiji plugin demo
YouTube video by jerome mutterer
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Reposted by Marie Walde 🌊🦠🔬
Ifremer 🌊 @ifremer.bsky.social · 10/08/2026
L'eau de mer est 🟤, 🟠, 🟢 ? Prenez une 📸 et faites avancer la science grâce à l'app #Phenomer de l’#Ifremer ! 🤳 👉 Infos : phenomer.org
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Reposted by Marie Walde 🌊🦠🔬
Florent Waltz @florentwaltz.bsky.social · 07/08/2026
We've been seeing a lot of "in situ" lately in titles from fancy journals (not pointing any fingers 👀). I’ve delayed posting this, but as more and more come out, I'm afraid "in situ" is becoming an empty buzzword, much like "near-atomic" was for SPA 🔬 1/n #cryo-ET #cryo-EM #cryoET #cryoEM 🧪
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Dave Barry @david-j-barry.bsky.social · 02/08/2026
From today, according to EU law, AI-generated content must be labelled as such.
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Universität Jena @uni-jena.de · 31/07/2026
For the first time, researchers from #UniJena and @leibniz-hki.de at @microverse.bsky.social have detected tiny membrane tunnels connecting social amoebae, serving as a communication and transport system. ➡️ www.uni-jena.de/en/434214/amo…
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John Burns @burnsajohn.bsky.social · 30/07/2026
I'm giving a public talk next Wednesday, August 5, on approaches to studying mid-water animals in situ. It will be light on technical details, and more conceptual and a journey to the deep than a regular science talk. Please join if you are interested! #marinelife www.bigelow.org/news/cafe-sc...
A chandelier siphonophore suspended in the deep Atlantic ocean.
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Reposted by Marie Walde 🌊🦠🔬
Christian Mosimann @chrmosimann.bsky.social · 25/07/2026
#2026SDB with amazing fluorescent imaging again. However, every session I attended so far has talks with red-green LUTs. 6-8% of us have color vision issues, especially for red-green. More visible color combos are easy to generate. As scientists, we can do better. 🧬🪰🐭🐟🧫🦎 #WeTheColorBlind #devbio
static.klipy.com
Rotating 'GREEN' Text in Red Circle
ALT: Rotating 'GREEN' Text in Red Circle
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Varsha Mathur @varshamathur.bsky.social · 21/07/2026
So happy to share our new paper out now in @natmicrobiol.nature.com! We establish Pirsonia-Coscinodiscus as a model pathosystem and uncover how this tiny parasite infects and kills bloom-forming marine diatoms 🌊🦠 rdcu.be/fuQyF
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Miguel Méndez Sandín @sandinmm.eurosky.social · 17/07/2026
Apparently the "boring billion" was actually exciting! We provide molecular evidence of complex Mesoproterozoic eukaryotic communities. So happy to see this out 🥳 Thanks to @phoebefossil.bsky.social , Hélène Morlon & @fburki.bsky.social for a lovely collab! doi.org/10.1073/pnas...
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Biozentrum, University of Basel @biozentrum.unibas.ch · 02/07/2026
New Assistant (tenure-track) or Associate Professor position in Climate #Biophysics! Join our international research community to explore fundamental molecular mechanisms underlying climate-relevant biological processes. Apply by 7 Sept 2026! www.biozentrum.unibas.ch/de/open-posi...
biozentrum.unibas.ch
Assistant/Associate Professor in Climate Biophysics
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Mark Peifer (He, him) @peiferlabunc.bsky.social · 27/06/2026
Truly bizarre story of how two papers from the 1940s by physics pioneer Max Planck have been "retracted" from Naturwissenschaften, potentially by an algorithm, for anachronistic "plagiarism" issues, leaving the current editor baffled (but it is Springer Nature so.... www.science.org/content/arti...
science.org
Why have papers by one of history’s most famous physicists been retracted?
Springer Nature has removed two studies by Max Planck. A bot may be to blame
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HHMI @hhmi-science.bsky.social · 28/06/2026
These stunning single-celled organisms can shape-shift & regenerate. Their trumpet-like shape inspired their name: stentor, after the herald in Greek mythology known for his booming voice. 📸: Confocal microscopy by Igor Siwanowicz, HHMI’s Janelia Research Campus
Three stentors
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Reposted by Marie Walde 🌊🦠🔬
Anne Walraven @annewalraven.bsky.social · 27/06/2026
Very excited that the preprint of the main paper of my PhD is now out! We show that Meringosphaera is the first centrohelid with permanent plastids: doi.org/10.64898/202... @zlatogursky.bsky.social, @pjkeelinglab.bsky.social, prof. Rachel A. Foster, and @fburki.bsky.social #protistsonsky
doi.org
Single cell genomics and fluorescence microscopy suggest a permanent plastid in a marine centrohelid
Photosynthetic organelles (plastids), which originated via primary endosymbiosis between an Archaeplastida ancestor and cyanobacteria, have shaped the Earth's oxygen-rich atmosphere and spread across ...
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Johannes Hohlbein @hohlbeinlab.bsky.social · 19/06/2026
You might have heard about our GitHub repository on #OpenMicroscopy. I finally vibecoded a page that (a) allows to search all entries and (b) generates a new database as soon as items are added on GitHub: hohlbeinlab.github.io/OpenMicrosco... Check it out and comments welcome!
hohlbeinlab.github.io
Open Microscopy — Resource Index
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Toni Gabaldón @tonigabaldon.bsky.social · 10/06/2026
Our paper "Gene ancestries reveal diverse microbial associations during eukaryogenesis.” is finally out in Nature. Eukaryogenesis was likely a gradual process shaped by multiple microbial partners and virus-mediated gene transfer, rather than a single binary symbiosis. doi.org/10.1038/s415...
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 10/06/2026
Congrats to you and the team! :)
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Guy Leonard @guyleonard.eurosky.social · 08/06/2026
Tadpole Doctor: a UK-based citizen science project that identifies novel Perkinsea clades closely related to candidate amphibian pathogens academic.oup.com/ismecommun/a...
academic.oup.com
Tadpole Doctor: a UK-based citizen science project that identifies novel Perkinsea clades closely related to candidate amphibian pathogens
Abstract. Parasites of the Perkinsea lineage infect both unicellular eukaryotic and metazoan hosts. The Pathogenic Perkinsea Clade (PPC) has been associate
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 05/06/2026
@gdrimabio.bsky.social @embrc-france.bsky.social @sbroscoff.bsky.social
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Virginie Uhlmann @virginieuhlmann.bsky.social · 01/06/2026
📢📢 We are hiring a Bioimage Analyst at the BioVisionCenter! 📢📢 Join our collaboration with the Flow Cytometry Facility and contribute back to the international efforts on open standards for bioimaging data! More information here, reach out if you have any question: jobs.uzh.ch/job-vacancie...
jobs.uzh.ch
UZH: Bioimage Analyst
The University of Zurich is the largest university in Switzerland and one of the most prominent in Europe. For research purposes the Biovision Center and Flow Cytometry Facility offer services to supp...
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Marie Walde 🌊🦠🔬 @mariescopy.bsky.social · 05/06/2026
Hacking spirit in Roscoff during our "Smart DIY Microscopy for Marine Biology" inspired by #MIFOBIO last year. We jointly assembled new #EnderScope systems for marine research. 🌊🔬💻 Big thanks to 💙EnderTeam 💙@embrc-france.bsky.social 💙@gdrimabio.bsky.social 💙@sbroscoff.bsky.social
A group of people listening to a presentationAn EnderScope with a multiwell dish containing small bits of different algaeAn EnderScope next to a big screen showing python codeA group of scientists visiting the historic aquarium of the Station Biologique de Roscoff
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Earth BioGenome Project 🌍 @ebpgenome.bsky.social · 04/06/2026
🧬 Diatoms are an extraordinarily diverse group of photosynthetic organisms, with tens of thousands of described species. Yet technical challenges still limit large-scale diatom genome production. EBP projects and biodiversity genomics R&D teams are working to solve them. 🌊🔬 #Diatoms #Biodiversity
Collage of microscopic images showing the remarkable diversity of diatoms. The slide title reads, “Why Is Sequencing Diatom Genomes So Difficult?” with the word “Difficult” highlighted in yellow. The background contains multiple light microscope photographs of different diatom species displaying a wide range of shapes and forms, including elongated needle-like cells, circular forms, rectangular chains, ornate geometric structures, and filamentous colonies. Some cells appear golden-brown due to photosynthetic pigments, while others show intricate silica patterns visible under magnification. The collage emphasizes the extraordinary morphological diversity found across diatoms.
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Arnaud Raoux @physicochimix.bsky.social · 31/05/2026
www.lesnumeriques.com/informatique... "Le logiciel libre l’emporte : Polytechnique dit non à Microsoft"
lesnumeriques.com
Le logiciel libre l’emporte : Polytechnique dit non à Microsoft et déclenche une vague de rébellion dans les universités
C'est un coup de théâtre qui secoue le monde de l'enseignement supérieur et de la tech française. Après des mois d'une guerre de tranchées juridique, la direction de l'École polytechnique a officielle...
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Julie Meilland @juliemeilland.bsky.social · 29/05/2026
We got our first common paper out #theLifeOfRetaria with @sandinmm.bsky.social , @raphaelmorard.bsky.social, @nicolecoots.bsky.social, @mattgr3co.bsky.social, Nicolaas Glock and Natalia Llopis-Monferrer - first product of our seminar series! check it out! onlinelibrary.wiley.com/doi/abs/10.1...
onlinelibrary.wiley.com
Unifying Retaria Research: A Common Framework for Studying Foraminifera and Radiolaria
Research on Foraminifera and Radiolaria has predominantly focused on their fossil remains. This synthesis identifies the “Big Five” disciplines of a unified Retaria research: diversity and evolution,...
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