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Anders K. Krabberød

@krabberod.bsky.social
273 followers 485 following 22 posts

Bioinformatician at the University of Oslo. Evolutionary biology, protists, progrock bassist.

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Reposted by Anders K. Krabberød
Håvard Kauserud @drhyfe.bsky.social · 12/09/2026
Why? Why not conduct more proper science? Punk attitude is sometimes fun, but not in science 😟 www.biorxiv.org/content/10.6...
biorxiv.org
Discovering 25 novel phyla that fill gaps in the eukaryotic tree of life
Protists play important roles in food chains and symbioses in soil and aquatic environments, displaying an enormous morphological and functional diversity[1][1],[2][2]. While most commonly found proti...
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Anders K. Krabberød @krabberod.bsky.social · 27/12/2025
#protistsonsky Can anybody help? I am looking for a pdf of "XXV. On the Mycetozoa" by de Bary, A. (1860). Annals and Magazine of Natural History, 5(28), 233–243.
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Sundy Maurice @sundymaurice.bsky.social · 17/12/2025
Key scientific events this week for the Oslo Mycology Group #OMG. 1- Maria Feiring brilliantly defended her Master thesis on the ecology and diversity of Myxomycete on boreal Forest soil and dead Wood. @krabberod.bsky.social @ellathoen.bsky.social @drhyfe.bsky.social & Inger Skrede
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Anders K. Krabberød @krabberod.bsky.social · 05/12/2025
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Anders K. Krabberød @krabberod.bsky.social · 18/08/2025
Det er valg! Lurer du på hvordan partiene står i forhold til hverandre? 📊 Her er en hovedkomponentanalyse (PCA) basert på NRKs valgomat. Fargene viser ideologisk blokktilhørighet, og linjene kobler partiene i et minimum spenntre – korteste vei som forbinder alle uten å lage løkker. #valg2025 #nrk
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Håvard Kauserud @drhyfe.bsky.social · 11/04/2025
Another version of our DNA metabarcoding course coming to an end. Thanks to the students and teachers @krabberod.bsky.social @ramalok.bsky.social @kbohmann.bsky.social @daniel-vaulot.bsky.social @micahdunthorn.bsky.social
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Håvard Kauserud @drhyfe.bsky.social · 10/04/2025
@krabberod.bsky.social presenting the Ribosomal Operon Database (ROD) at our ongoing DNA metabarcoding course onlinelibrary.wiley.com/doi/10.1111/...
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Reposted by Anders K. Krabberød
The PR2 database @pr2-database.bsky.social · 03/04/2025
- The web interface now provides access to the ROD database that contains full-length eukaryotic ribosomal operons developed by @krabberod.bsky.social
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Anders K. Krabberød @krabberod.bsky.social · 03/04/2025
I am very happy that ROD (The Ribosomal Operon Database) is now included in the outstanding PR2 web interface, enhancing its accessibility and utility. I hope to make some updates to ROD in the near future. with @drhyfe.bsky.social
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The PR2 database @pr2-database.bsky.social · 03/04/2025
Announcing the new release of the PR2 database, version 5.1. pr2-database.org/post/news/20... Very big thanks to all the contributors: @fonamental.bsky.social @ambonacolta.bsky.social @krabberod.bsky.social and more... A few highlights:
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William @williamreinar.bsky.social · 27/01/2025
New paper by our group, mutation accumulation experiment in heat-stressed Arabidopsis! www.biorxiv.org/content/10.1...
biorxiv.org
High short tandem repeat mutation recurrence in heat-stressed Arabidopsis thaliana lines
The rise of the annual average temperature presents a strong selection pressure for many species. Sessile organisms, such as the plant Arabidopsis thaliana (A. thaliana), need to adapt to elevated tem...
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Reposted by Anders K. Krabberød
Kjetill S Jakobsen @kjetillsj.bsky.social · 28/01/2025
Check out our latest preprint. Recurrence of STR length mutations in heat stressed Arabidopsis lines (over many generations) www.biorxiv.org/content/10.1...
biorxiv.org
High short tandem repeat mutation recurrence in heat-stressed Arabidopsis thaliana lines
The rise of the annual average temperature presents a strong selection pressure for many species. Sessile organisms, such as the plant Arabidopsis thaliana ( A. thaliana ), need to adapt to elevated t...
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Reposted by Anders K. Krabberød
Micah Dunthorn @micahdunthorn.bsky.social · 23/01/2025
Registration is now open for the ForBio/UiO course “Bioinformatics for environmental DNA sequencing” @biovitenskap.bsky.social @drhyfe.bsky.social @krabberod.bsky.social @ramalok.bsky.social www.forbio.uio.no/events/cours...
forbio.uio.no
ForBio and UiO/IBV course: Bioinformatics for environmental DNA sequencing - ForBio
Read this story on the University of Oslo's website.
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John Burns @burnsajohn.bsky.social · 01/01/2025
Let's kick of the New Year like an acantharian with a little #protistsonsky fireworks magic. Happy New Year 2025! 🦑
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John Dolan @tintinnman.bsky.social · 29/12/2024
Last Sunday of 2024 - Hoping for better year beginning this week!!!
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c0nc0rdance @c0nc0rdance.bsky.social · 25/12/2024
"Ants solving a geometric problem and it's amazing." This is a great example of 'emergent phenomenon': - None of the ants understand the problem they're solving. - None of them can see the whole shape. - A series of small decisions or rules add up to something with a new layer of complexity.
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John Burns @burnsajohn.bsky.social · 22/12/2024
One of my favorite radiolarians. I call it a "little hat", but I guess it is probably Eucecryphalus sp. Here are two examples from Bermuda (Atlantic) and Puerto Rico (Caribbean). Exquisite little #protistsonsky. I love seeing these forms in different regions of the Oceans. #protistaday #marinelife
An image of a radiolarian from the Carribean Sea off of Puerto Rico, likely from the genus Eucecryphalus. Looks like a little glass hat.An image of a radiolarian from the Atlantic Ocean off of Bermuda, likely from the genus Eucecryphalus. Looks like a little glass hat.
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Micah Dunthorn @micahdunthorn.bsky.social · 20/12/2024
International Society of Protistologists is funding two symposia at the 16th International Congress of Protistology in Seoul, South Korea. Proposals are due 30 January 2025 #protist #protistsonsky protistologists.org/programs/fun...
protistologists.org
Funding - International Society of Protistologists
Student support, seed money, and more. Got a tip for a program that funds protist research? Contact the Vice President. Society funding: The Holz-Conner Travel Fund provides funding for travel […]
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John Burns @burnsajohn.bsky.social · 20/12/2024
The rhizarian testate amoeba Euglypha rotunda eats its co-cultured bacteria, but it will also chow down on GFP E. coli. One day I'll use these vids to measure digestion rates. @thealgaeman.bsky.social another answer to what they eat! #protistaday #protistsonsky
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John Burns @burnsajohn.bsky.social · 19/12/2024
Sometimes you need to take your little shelled amoebas out for a walk. Rhizarian testate amoeba euglypha rotunda #protistsonsky #protistaday
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Daniel Vaulot @daniel-vaulot.bsky.social · 10/12/2024
New preprint led by Ruben Gonzalez-Miguens for a new coi database that should be useful to annotate metabarcoding datasets with protists. www.biorxiv.org/content/10.1...
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Javier del Campo @fonamental.bsky.social · 12/12/2024
Happy to be part of this effort led by Rubén González-Miguéns: A Novel Taxonomic Database for eukaryotic Mitochondrial Cytochrome Oxidase subunit I Gene (eKOI) www.biorxiv.org/content/10.1101/202… eKOI will be integrated into @pr2-database.bsky.social 🙌 #protistsonsky
biorxiv.org
A Novel Taxonomic Database for eukaryotic Mitochondrial Cytochrome Oxidase subunit I Gene (eKOI): Enhancing taxonomic resolution at community-level in metabarcoding analyses
Metabarcoding has emerged as a robust method for understanding biodiversity patterns by retrieving environmental DNA (eDNA) directly from ecosystems. Its low cost and accessibility have extended its…
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Iñaki Ruiz-Trillo @multicellgenome.bsky.social · 17/12/2024
🧬🦠 Exciting new resource for #protists lovers! The eKOI database to expand the power of COI metabarcoding with a focus on #protistsonsky & integrated in @pr2-database.bsky.social Lead by Rubén with @beaplab.bsky.social @fonamental.bsky.social @daniel-vaulot.bsky.social Link: t.co/3lqzRaFw9V
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John Burns @burnsajohn.bsky.social · 18/12/2024
Palpitomonas: the movie. I like this blurry little video because it shows the cryptistid Palpitomonas with its two absurdly long flagella beating with two different patterns. I imagine it as a pianist playing different parts with each hand. #protistaday #protistsonsky
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John Burns @burnsajohn.bsky.social · 16/12/2024
The rhizarian testate amoeba that I shared yesterday makes its shell out of intricate, self-constructed glass scales. Other testate amoebozoans in the same environment make their shells out of debris (left) or food (right). These are interesting examples of convergence! #protistsonsky #protistaday
An SEM image of a testate amoebozoan that makes its shell from debris in the environment. An SEM image of a testate amoebozoan that makes its shell from food particles--mostly diatom tests in this case!
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John Burns @burnsajohn.bsky.social · 17/12/2024
Today's #protistaday is a scan through a multinucleated Acantharian cell from here in the Gulf of Maine. All of the larger Acantharians I've looked at have multiple nuclei like this... need to take a look at/stain the teeny "baby" ones to see how these structures develop! #marinelife #protistsonsky
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John Burns @burnsajohn.bsky.social · 15/12/2024
Not a fish or a dragon scale, but a single cell of a #protistsonsky. This rhizarian testate amoeba creates perfect tiny glass scales to build it's shell. From a peat bog. #protistaday.
SEM image of a rhizarian testate amoeba (euglyphid) showing its glass scales.
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Lukas VF Novak @animalculum.bsky.social · 14/12/2024
This #amoeba eats prey like #owls do www.sciencenews.org/article/amoe... The vampyrellid amoeba #Strigomyxa ruptor gen. et sp. nov. and its remarkable strategy to acquire algal cell contents onlinelibrary.wiley.com/doi/10.1002/... #Protists #Algae #Amoebae #ProtistsOnSky #Microbes
The amoeba Strigomyxa ruptor (large yellow-orange cell) engulfs its prey, a Closterium alga (elongated green cell)
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John Dolan @tintinnman.bsky.social · 13/12/2024
Wild things out there! A likely ciliate cyst from the Arctic #protistsonsky
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John Burns @burnsajohn.bsky.social · 14/12/2024
Inspired by @evocellbio.bsky.social, I think I found our gal: Conchoceras caudatum! Drawing from the Challenger expedition in the mid 1870's. Happy to share this again with the additional context. What an incredible cell. #protistaday #protistsonsky #marinelife
Drawing of the phaeodarian Conchoceras caudatum from Haeckel's book from the Challenger expedition.Living cell of the phaeodarian Conchoceras caudatum collected in the Caribbean Sea near Puerto Rico.
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John Burns @burnsajohn.bsky.social · 13/12/2024
A nasselarian radiolarian with its podoconus (cone-like arrangement of long arms) out and lots of internal movement. Beautiful to see! In the water column, that cone of arms is probably oriented "up" for catching debris/prey and managing motion with the hard skeleton pointed "down" #protistaday
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John Burns @burnsajohn.bsky.social · 12/12/2024
Is it a repeat? Sort of, but this is a radiolarian in motion! I wanted to see how dynamic the symbionts are. They mostly stay still over a couple of minutes. With @micrott.bsky.social and @evocellbio.bsky.social #protistaday #protistsonsky #marinelife
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Fabien Burki @fburki.bsky.social · 10/12/2024
I am looking for an ERC-funded postdoc to work on spatial proteomics of microalgae (red algae and glaucophytes). The ideal candidate will have experience with mass spec and data analysis (R), but above all a keen interest in broad eukaryote evolution and protists #protistsonsky (1/2)
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John Burns @burnsajohn.bsky.social · 11/12/2024
Field imaging setup with @micrott.bsky.social. I lug my inverted scope and a variety of little cameras around and am taking up space in her lab to image #protistsonsky in collaboration. It is amazing! Pictured are two spumellarian radiolarians #protistaday #marinelife
Picture of a marine protist imaging setup with an inverted microscope, ocular camera, and two radiolarians on the computer screen.
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John Burns @burnsajohn.bsky.social · 10/12/2024
"Hey wait for meeee!" Said the little radiolarian. #protistaday #protistsonsky #marinelife. With @micrott.bsky.social and @evocellbio.bsky.social
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John Burns @burnsajohn.bsky.social · 09/12/2024
Today a radiolarian #protistaday from the Caribbean. It is a privilege to have the means, support, and interest to Research the curious cell biology of radiolarians. I have many like this to share and will hopefully have opportunities to dive into their cell bio in the future. 🦑 #protistsonsky
An image of a nasselarian radiolarian with symbionts from the Caribbean sea.
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John Burns @burnsajohn.bsky.social · 08/12/2024
Okay... #protistaday. I know this is a phaeodarian, but how does a cell evolve to build a glass mouth, teeth and all, to live inside? This is totally amazing. #protistsonsky #marinelife. With @evocellbio.bsky.social @micrott.bsky.social
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John Burns @burnsajohn.bsky.social · 07/12/2024
Today's #protistaday is especially for @krabberod.bsky.social. A taxopodida from the Caribbean Sea. With its long, wide oars it looks pretty different from the species I encounter in Maine! #protistsonsky #marinelife
Image of a single cell from the group Taxopodida. An oval shaped cell with long oar-like glass appendages.
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John Burns @burnsajohn.bsky.social · 06/12/2024
Today's #protistaday is not my most beautiful video, but it comes from a special location. This is a pair of ciliates that emerged from rainforest soil from El Yunque national forest 🇵🇷. Soils are amazing bc they look still at first, but a drop of water and a day wait brings motion! #protistsonsky
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John Burns @burnsajohn.bsky.social · 06/12/2024
And a special double #protistsonsky from me today with a second protist from rainforest soil. This testate amoeba has awoken from stasis (dry soil), but hasn't quite emerged from its protective plug. At least that's how I interpret this... in cold weather back in Maine I see something similar!
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John Burns @burnsajohn.bsky.social · 05/12/2024
Plankton tows in Puerto Rico with @micrott.bsky.social are going great! Lots of beautiful microeukaryotes and tiny animals. Today I'll share this Ornithocerus sp. dinoflagellate bc you can see it's little band of bacterial symbionts! #protistaday #protistsonsky #marinelife
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Luciana Santoferrara @lusantof.bsky.social · 02/12/2024
Our new paper: www.sciencedirect.com/science/arti... #protistsonsky Here there is a download link if the previous one doesn't work: authors.elsevier.com/a/1kC9d3m3nN...
sciencedirect.com
Phylogenomic workflow for uncultivable microbial eukaryotes using single-cell RNA sequencing − A case study with planktonic ciliates (Ciliophora, Oligotrichea)
Phylogenetic analyses increasingly rely on genomic and transcriptomic data to produce better supported inferences on the evolutionary relationships am…
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John Burns @burnsajohn.bsky.social · 04/12/2024
In hopes of finding lots of Carribean radiolarians today, my #protistaday image is a constellation of microscopic stars of the sea, acantharians. #marinelife #protistsonsky
An inverted image of isolated acantharians looking like a group of stars in the night sky.
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John Burns @burnsajohn.bsky.social · 03/12/2024
A radiolarian colony with some beautiful features: golden symbionts close to the cell bodies, and glass spines--a simple form that is similar to the basic skeleton of many more elaborate single celled species. 🦑 #protistaday #protistsonsky #symbiosky
A close up image of a radiolarian colony showing its central capsules, golden symbionts, and glass spines that this species makes.
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John Burns @burnsajohn.bsky.social · 02/12/2024
From a large, local, and unusual, bloom of the dinoflagellate Tripos muelleri in 2023. I trapped some cells in agar microwells to see if I could catch them dividing in a long timelapse. Those wells are 250 microns in diameter: the cells are large! #protistaday #protistsonsky #marinelife
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John Burns @burnsajohn.bsky.social · 01/12/2024
The tiny heterotrophic cryptophyte palpitomonas with its small cell body, relatively large nucleus (shown with a green nuclear stain) and its strangely extra long pair of flagella. #protistaday #protistsonsky
4 images of the marine cryptophyte protist palpitomonas. Showing the ce body and flagella and nuclear staining with the dye syto9 in green.
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John Burns @burnsajohn.bsky.social · 29/11/2024
Mitosis in a green alga. The cell grows until it is tetralogy, then divides twice to form 4 new haploid cells. This is one of my study algae, Oophila amblystomatis, a symbiotic green alga. #protistsonsky #protistaday
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John Burns @burnsajohn.bsky.social · 30/11/2024
Keeping with the #symbiosky green alga from yesterday, this amazing video shows where each little algal cell is (green dots) inside a salamander embryo. The only vertebrate-alga endosymbiosis. We are still trying to understand the interaction. Light sheet microscopy. #protistaday #protistsonsky
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John Burns @burnsajohn.bsky.social · 28/11/2024
Crawling through the water in slow motion, the tetraflagellate green alga Cymbomonas swims across the frame with its double-breaststroke like action pulling it forward. #protistaday #protistsonsky #marinelife
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John Burns @burnsajohn.bsky.social · 27/11/2024
A gorgeous planktonic foram from the Atlantic Ocean near Bermuda. With @blancobercial.bsky.social. Your #protistaday! #protistsonsky #marinelife
An image of a microscopic foraminiferan. It is a single cell that makes a calcium carbonate (calcite) shell and spines.
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