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Scott Nichols

@scottnichols.bsky.social
1.9K followers 2.3K following 51 posts

Associate Professor of Biology @ University of Denver. Sponges, evolution, cell biology.

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Reposted by Scott Nichols
Tyler J. Carrier @tylerjcarrier.bsky.social · 05/09/2026
New paper entitled “Phagocytosis of microbial symbionts supports embryonic nutrition in the sponge Halichondria panicea” is out now in @microbiomej.bsky.social! link.springer.com/article/10.1...
link.springer.com
Phagocytosis of microbial symbionts supports embryonic nutrition in the sponge Halichondria panicea - Microbiome
Background Animal development is frequently supported by microbial symbionts that contribute to host nutrition, metabolism, and physiology. While the functional importance of microbiomes in adult host...
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Casey Dunn @caseywdunn.bsky.social · 25/08/2026
My new book, Phylogenetic Biology, is now published. Available online for free at dunnlab.org/phylogenetic... . Physical copies can be purchased at shop.lightningsource.com/b/085?params... or your favorite bookstore.
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EcoEvoRxiv @ecoevorxiv.bsky.social · 28/08/2026
'Cell-autonomous immunity and the endosymbiotic theory: Septins at the origin?' doi.org/10.32942/X2X...
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Chemistry World @chemistryworld.com · 24/07/2026
‘How can we ever trust this company again knowing what it’s done? We need a big response and a real promise to do things differently moving forward,’ says Elisabeth Bik. #ChemSky @elisabethbik.bsky.social @reeserichardson.bsky.social @sholtodavid.bsky.social www.chemistryworld.com/news/thermo-...
chemistryworld.com
Thermo Fisher antibody data manipulation is a breach of trust, say researchers
Science sleuths say the problem is impacting research progress and Thermo's response falls short
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Pawel Burkhardt @pawelburkhardt.bsky.social · 10/07/2026
Our News & Views article “Body-plan organizer in comb jellies hints at animal ancestry” now published in @nature.com 🎉 We discuss fascinating work revealing organizer activity in comb jellies & the evolution of animal development. rdcu.be/fsLWq @ruthstyfhals.bsky.social @msarscentre.bsky.social
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Noah Whiteman @nkwhiteman.bsky.social · 25/06/2026
So excited to announce our search for 4 postdocs (funded by the Simons Foundation) who will use genomics to "test how ecological interactions, natural selection, natural enemies, hybridization & environmental gradients shape...tropical tree communities" in Panama: stri.si.edu/story/bci-ev... ...1
stri.si.edu
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Anh Hoang Le, PhD 🏳️‍🌈🏴󠁧󠁢󠁳󠁣󠁴󠁿🇻🇳 @anhhle2702.bsky.social · 22/05/2026
Happy #FluorescenceFriday! I captured this shot of a group of embryonic macrophages expressing LifeAct and H2B migrating inside tissue. These cells can use lamellipodia, filopodia, or blebs to migrate, and are frequently switching between these different modes or combining them. So fascinating.
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Ben Larson @blarson.bsky.social · 25/06/2026
I had a ton of fun the other day talking with @nonresidentdesi.bsky.social and @scifri.bsky.social 's Flora Lichtman and Rasha Aridi about murderous microbes and the things that we are trying to learn from them. Happy for the opportunity to bring some new awareness to the world of protists!
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Alessandro Garritano @alegarritano.bsky.social · 27/05/2026
From my last PhD paper, now in The Conversation: how deep sea sponges thrive in the dark. Their microbial partners oxidise ammonia and break down tough algal carbon. theconversation.com/deep-sea-spo... #Metagenomics 🧪 #Bioinformatics 🧬💻 #SymbioSky
theconversation.com
Deep-sea sponges survive in complete darkness in ways we didn’t know before
Beyond the sunlit ocean lies a vast abyss where organisms have to recycle every scrap available.
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Dr. Carly Kenkel @drcarl.bsky.social · 03/06/2026
The list of Ecology/Evolution/Marine Bio Labs recruiting grad students for Fall 2027 is live! PIs enter your position info here: forms.gle/MAGd4ohyPeoY... students (and PIs not recruiting) share the composite list: docs.google.com/spreadsheets... Please share widely! 🧪
forms.gle
Ecology/Evolution/Marine Biology labs recruiting for Fall 2027
Please complete this form if you are a PI recruiting graduate students for a Fall 2027 start. If you are NOT recruiting, feel free to share the response sheet with prospective students looking for lab...
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Jacob Pawley 🧽 🦠 🦕 @pawley.bsky.social · 11/05/2026
Successfully defended my PhD last Thursday :) Dissertation Title: “Exploring foundations of animals of host–microbe interactions in a freshwater sponge” Lab: @scottnichols.bsky.social #sponge #immunology #symbiosis
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Megan Sorensen @messorensen.bsky.social · 30/04/2026
Interested in working on the evolution of photosynthetic endosymbioses? Come join us! I have 2 open positions in my new group @cemess.bsky.social in Vienna 3yr postdoc info: tinyurl.com/4emkjpn4 4yr PhD info: tinyurl.com/mtxmsjpy Apply by 1st June! Please share/repost #Protists #Symbiosis #PhD
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Jason Rasgon @vectorgen.bsky.social · 23/04/2026
The RasgonLab is anticipating several postdoc openings to work on development & application of CRISPR in arthropods, dependent on final approval of funds and HR approval of positions. Candidates must already be physically located in the USA. H1B visa sponsorship is not possible. Email me for info
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Bohdana Hurieva🇺🇦 @bhurieva.bsky.social · 23/04/2026
🎉Excited to share our new preprint! TIR domains from diverse animals, including human TLR4, are catalytically active and produce cyclic ADP-ribose (cADPR). This enzymatic activity is widespread in animals and conserved across the tree of life. www.biorxiv.org/content/10.6...
biorxiv.org
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Vengamanaidu Modepalli @venky-vnm.bsky.social · 20/04/2026
Interested in miRNAs, early animal evolution, and RNA biology? We’re recruiting a BBSRC-funded Postdoctoral Research Associate @bristolbiosci.bsky.social #Postdoc #microRNA #RNAbiology Apply by 14 May 2026. 👉 www.bristol.ac.uk/jobs/find-in...
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Dennis Lavrov @dlavrov.bsky.social · 09/04/2026
Where do you find an animal mitochondrial genome that is several Mbp in size and contains thousands of linear chromosomes? In a tiny #sponge Sycon ciliatum: doi.org/10.1098/rstb... #Porifera #Mitochondria
doi.org
Extreme mitochondrial genome complexity in the calcaronean sponge Sycon ciliatum (Fabricius, 1780): fragmentation, gene duplication and mRNA editing
Abstract. Mitochondrial genomes (mt-genomes) of calcaronean sponges are among the most unusual in Metazoa. They are fragmented into multiple linear chromos
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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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David Roberts @volts.wtf · 04/04/2026
For years I've been looking for the right guest to do a pod on this. The car-sales model that is dictated by law in the US -- you must go to a dealership & suffer for hours in order to buy one -- is one of the most nakedly anti-social special interest giveaways in history. Needs to be killed dead.
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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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Iñaki Ruiz-Trillo @multicellgenome.bsky.social · 24/03/2026
#Ichthyosporea are not just the 5–6 species we and others have helped establish as models. Our recent synthesis suggests that ~95% of their species-level diversity remains uncultivated. In other words, we still know only a fraction of the map! #protistsonSky @ibe-barcelona.bsky.social @prbb.org
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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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Nichole Broderick, PhD @nabroderick.bsky.social · 20/03/2026
Excited to announce our new journal from @isme-microbes.bsky.social ISME Host Microbe is live and now accepting submissions. Look forward to receiving your papers! #Microsky 🧫 🦠
Image of the cover of the 1st volume of ISME Host Microbe a new official journal of the International Society for Microbial Ecology. Cover images shows a plant stomata with bacteria around and entering.
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Aissam Ikmi @aikmi.bsky.social · 20/03/2026
Our study on shape diversity in cnidarians is now published. The final version includes extensive new data that substantially extend the original bioRxiv preprint. Congrats to everyone who contributed to this work! www.cell.com/cell/fulltex... @embl.org
cell.com
Deciphering mechanical determinants of morphological evolution
A comparative analysis of cnidarian larval morphogenesis combined with active surface theory identifies a set of mesoscale mechanical modules that predict species-specific shapes. Manipulating these m...
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Ctenophores Rock! @ctenophoresrock.bsky.social · 18/03/2026
Work with #ctenophores or similar emerging models of evolutionary biology? Whether you research or take care of them, we want to follow you! Reach out if this describes you 😀 Please repost! 🙏
Image of text in all caps that says CTENOPHORES ROCK! There are wiggly lines and stars in different colors.
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Taylor Mitchell Brown @tmitchellbrown.bsky.social · 13/03/2026
Extraordinary new fossils from Newfoundland reveal an ancient mass extinction worse than the asteroid-driven calamity that killed the dinosaurs. #Paleontology #KotlinCrisis #FossilFriday 🧪🧪 New for @science.org
science.org
Earth’s first major extinction was worse than we thought
Fossil finds suggest nearly 80% of life on Earth died some 550 million years ago
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Pawel Burkhardt @pawelburkhardt.bsky.social · 12/03/2026
Choanoflagellate transfection just got much cheaper: www.biorxiv.org/content/10.6... Congratulations @frutag33.bsky.social & team. #choanoflagellates #transfection
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Schmidt Ocean Institute @schmidtocean.bsky.social · 10/03/2026
Wow. Foraminifera! ROV pilots paused and carefully zoomed in to collect footage of these single-celled microorganisms, or protists, at 843 m during the #OBVI #LivingBioreactors expedition w/ @schmidtsciences.bsky.social offshore of Argentina. Read the full caption: youtube.com/shorts/Yv_ud...
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Fay-Wei Li @fernway.bsky.social · 05/03/2026
Our work on #hornwort #pyrenoids is finally out in @science.org! 🎉 We uncovered how hornworts pack their Rubisco into pyrenoids and successfully recreated them in Arabidopsis. A key step toward engineering more efficient photosynthesis in crops @btiscience.bsky.social www.science.org/doi/10.1126/...
science.org
An unconventional Rubisco small subunit underpins the CO2-concentrating organelle in land plants
In many algae, photosynthesis is boosted by biophysical CO2-concentrating mechanisms, which pack the CO2-fixing enzyme Rubisco into liquid-like organelles called pyrenoids. Engineering C3 crops with a...
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Pawel Burkhardt @pawelburkhardt.bsky.social · 04/03/2026
Thrilled to share that our preprint has been accepted in Science Advances! Grateful to an incredible team & collaborators. Link: www.science.org/doi/10.1126/... 👏 @annaferraioli.bsky.social @maikekittelmann.bsky.social @msarscentre.bsky.social @erc.europa.eu @hfspo.bsky.social #ctenophores
science.org
The 3D architecture of the ctenophore aboral organ and the evolution of complex integrative centers in animals
The ctenophore aboral organ integrates multimodal sensory signals across distinct cell types.
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ContempraInn 🌹 @contemprainn.bsky.social · 02/03/2026
A 2000 year old barrel sponges in the Banda Sea spawn with the full moon, a rare natural spectacle of life. Found throughout the   tropical coral reef environments in the Atlantic Ocean, these sponges grow slowly but can live for centuries or thousands of years in
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Thibaut Brunet @thibautbrunet.bsky.social · 28/02/2026
Final version @nature.com of our paper describing unconventional multicellular development in a choanoflagellate inhabiting an extreme environment. A ton of new data since the first @biorxivpreprint.bsky.social preprint (which we've kept updating). A brief 🧵 (carried over from the old place)
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Frank Schnorrer @frankschnorrer.bsky.social · 16/02/2026
Two funded PhD positions investigating the evolution of sarcomeres @ibdm.bsky.social in @biancah0406.bsky.social and our lab, together with @cnidevo.bsky.social - Interested to explore how similar or different Jellyfish sarcomeres are to Drosophila or human ones? www.ibdm.univ-amu.fr/ibdm_job/2-a...
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Roy Zang @cellulo-evo.bsky.social · 18/02/2026
How do #sponges coordinate their bodies despite lacking neurons and true muscles? We show that sponges use monoamines to control water flow in their canals — reminiscent of how adrenaline regulates blood vessels. My PhD story, now on BioRxiv: www.biorxiv.org/content/10.6... #Evolution
Evolution of monoamine reception and its role in cellular contractility.
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Gaspar Jekely @jekely.biologists.social.ap.brid.gy · 18/02/2026
In @eLife: Neural connectome of the ctenophore statocyst doi.org/10.7554/eLife.108420 Version of record of our ctenophore nerve-net connectome paper.
elifesciences.org
Neural connectome of the ctenophore statocyst
Volume EM and connectome reconstruction of the apical organ of a ctenophore combined with high-speed imaging reveals a neuronal coordination of balancer cilia in the gravisensory organ.
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John Wallingford @jbwallingford.bsky.social · 10/02/2026
Registration is OPEN for the 2026 Santa Cruz Meeting on Developmental Biology!!! Please spread the word! @mads100tist.bsky.social @socdevbio.bsky.social @bsdb.bsky.social @xenbase.bsky.social @isdb.bsky.social @devbiol.bsky.social @the-node.bsky.social scdb2026.sites.ucsc.edu
scdb2026.sites.ucsc.edu
Santa Cruz Developmental Biology Meeting
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Centre de Regulació Genòmica (CRG) @crg.eu · 11/02/2026
Congratulations to @arnausebe.bsky.social, Premi Ciutat de Barcelona 2025 in the category of Life Sciences and Medicine. The award ceremony will take place today at the historic Saló de Cent and was presided over by the Mayor of Barcelona. Full story: www.crg.eu/en/news/arna...
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Scott Nichols @scottnichols.bsky.social · 10/02/2026
Excited to announce a new preprint from my PhD student @pawley.bsky.social : "The discovery of an external bacterial niche reconciles sequencing-based microbiomes in a freshwater sponge."
biorxiv.org
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Max Telford @maxjtelford.bsky.social · 27/01/2026
The last word on Ctenophores versus Sponges (not). www.nature.com/articles/d41...
nature.com
What were the first animals? The fierce sponge–jelly battle that just won’t end
For almost two decades, scientists have debated whether sponges or comb jellies are the first animal lineage. Now some are calling for a more harmonious approach.
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でんか @k-hermit.com · 22/01/2026
❤️‍🔥
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Rob Steele @robthehoosier.bsky.social · 15/01/2026
press.asimov.com/articles/hea...
press.asimov.com
Mystery of the Head Activator
A biological puzzle that made one researcher and ruined another might never be solved.
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c0nc0rdance @c0nc0rdance.bsky.social · 15/01/2026
Seeing this video of two Great Horned owls (Bubo virginianus) from Colton Lockridge you might think: "Get a room, you two." But, uh... these are juvenile siblings. 🤨 The behavior shown here is called 'billing' or 'bill fencing' & it's a playful social interaction, *no matter what it looks like*.
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Tay (Antonio J. Osuna Mascaró) @biotay.bsky.social · 14/01/2026
1/3 Jellyfish and anemones also sleep, despite not having a brain Not only do they sleep, but their behavior is affected if they lack sleep; they become clumsier and need to catch up on lost sleep. Interestingly, they sleep 8 hours a day, just like us. (paper) www.nature.com/articles/s41...
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BejaLabTechnion @bejalab.bsky.social · 12/01/2026
A giant virus forms a specialized subcellular environment within its amoeba host for efficient translation www.nature.com/articles/s41...
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Casey Dunn @caseywdunn.bsky.social · 09/01/2026
Our eLetter github.com/caseywdunn/s... responding to a recent Science paper was just posted. The paper found more genes with consistent support for sponge-sister than ctenophore-sister. We found several technical issues that, when corrected, reverse the conclusions and recover ctenophore-sister.
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Philip Donoghue @phil-donoghue.bsky.social · 08/01/2026
Our latest: Independent origins of spicules reconcile paleontological and molecular evidence of sponge evolutionary history, led by @meleonora-rossi.bsky.social with help from friends @bristolpalaeo.bsky.social including @anariesgo.bsky.social @evopalaeo.bsky.social Davide Pisani and many others
science.org
Independent origins of spicules reconcile paleontological and molecular evidence of sponge evolutionary history
Sponges have a cryptic Ediacaran history because ancestral sponges were soft-bodied and had low fossilization potential.
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Scott Nichols @scottnichols.bsky.social · 04/01/2026
Tectura paleacea … surfgrass limpet. Only grows as wide as the seagrass blade it lives on.
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Scott Nichols @scottnichols.bsky.social · 31/12/2025
Help with invert ID? Point lobos, Carmel CA. I don’t know what either the yellow or the while things are. White looks like it has two siphons, yellow has only one. Thinking the yellow might be a keyhole limpet? No idea about the white one….
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Stephen Heard @stephenbheard.bsky.social · 31/12/2025
It's official - my new book is officially published today! If you mentor science students who write - grad or undergrad - you're the reason we wrote this. Mentoring/teaching writing is hard; but we can make it easier!
scientistseessquirrel.wordpress.com
It’s publication day! “Teaching and Mentoring Writers in the Sciences”
Ok, we’re seriously excited – not for tonight’s fireworks, but because after several years of work, our new book is officially published today! That’s right – Teaching and Mentoring Writers i…
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