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.
December 15, 2024 at 1:55 PM
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.
Look at me! I'm a rhizarian doing amoeba-stuff inside my spiky/scaly glass house. #protistsonsky
November 8, 2024 at 2:34 AM
Look at me! I'm a rhizarian doing amoeba-stuff inside my spiky/scaly glass house. #protistsonsky
Hey little rhizarian glass-scale-shelled amoeba, where's your nucleus? Oh, it's exactly where it looks like it should be? Cool! #bogmonster #protistsonsky
January 16, 2025 at 10:32 PM
Hey little rhizarian glass-scale-shelled amoeba, where's your nucleus? Oh, it's exactly where it looks like it should be? Cool! #bogmonster #protistsonsky
Sometimes you need to take your little shelled amoebas out for a walk. Rhizarian testate amoeba euglypha rotunda #protistsonsky #protistaday
December 19, 2024 at 12:46 PM
Sometimes you need to take your little shelled amoebas out for a walk. Rhizarian testate amoeba euglypha rotunda #protistsonsky #protistaday
www.biorxiv.org/content/10.1...
Multiple evolutionary routes to cytoskeletal arborization revealed by the rhizarian amoeba Filoreta ramosa
Multiple evolutionary routes to cytoskeletal arborization revealed by the rhizarian amoeba Filoreta ramosa
July 7, 2026 at 11:52 AM
www.biorxiv.org/content/10.1...
Multiple evolutionary routes to cytoskeletal arborization revealed by the rhizarian amoeba Filoreta ramosa
Multiple evolutionary routes to cytoskeletal arborization revealed by the rhizarian amoeba Filoreta ramosa
Here's another harosan: Collozoum, a multicellular jelly tube made of rhizarian amoebas & photosynthetic dinoflagellate symbionts
February 28, 2025 at 7:56 PM
Here's another harosan: Collozoum, a multicellular jelly tube made of rhizarian amoebas & photosynthetic dinoflagellate symbionts
A hydrogen-producing mitochondrion in an anaerobic eukaryotrophic rhizarian https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
September 27, 2026 at 10:30 AM
A hydrogen-producing mitochondrion in an anaerobic eukaryotrophic rhizarian https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
This is an Alveolate from the Harosan kingdom. Harosans include brown & yellow algae like kelp & diatoms, mycelial oomycetes, dinoflagellates, ciliates, & rhizarian bony amoebas among others. A surprising number of these non-plant non-animal non-fungi critters are multicellular & macroscopic.
February 28, 2025 at 6:47 PM
This is an Alveolate from the Harosan kingdom. Harosans include brown & yellow algae like kelp & diatoms, mycelial oomycetes, dinoflagellates, ciliates, & rhizarian bony amoebas among others. A surprising number of these non-plant non-animal non-fungi critters are multicellular & macroscopic.
Spatial proteomics reveals carboxysome adaptation and mitochondrial proteome in Paulinella chromatophora
#microbiology #proteomics #mitochondria #MicroSky #ProtistsOnSky
@currentbiology.bsky.social
www.sciencedirect.com/science/arti...
#microbiology #proteomics #mitochondria #MicroSky #ProtistsOnSky
@currentbiology.bsky.social
www.sciencedirect.com/science/arti...
Spatial proteomics reveals carboxysome adaptation and mitochondrial proteome in Paulinella chromatophora
The Rhizarian amoeba Paulinella chromatophora represents a unique case of primary endosymbiosis, which has acquired photosynthetic organelles (chromat…
www.sciencedirect.com
September 29, 2026 at 6:38 AM
Spatial proteomics reveals carboxysome adaptation and mitochondrial proteome in Paulinella chromatophora
#microbiology #proteomics #mitochondria #MicroSky #ProtistsOnSky
@currentbiology.bsky.social
www.sciencedirect.com/science/arti...
#microbiology #proteomics #mitochondria #MicroSky #ProtistsOnSky
@currentbiology.bsky.social
www.sciencedirect.com/science/arti...
A hydrogen-producing mitochondrion in an anaerobic eukaryotrophic rhizarian https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
September 27, 2026 at 10:30 AM
A hydrogen-producing mitochondrion in an anaerobic eukaryotrophic rhizarian https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
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
December 20, 2024 at 11:39 PM
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
My PhD work is up on bioRxiv! Read all about the #actin and #microtubule #cytoskeleton of the Rhizarian #amoeba Filoreta ramosa here: www.biorxiv.org/content/10.1...
October 29, 2025 at 3:47 PM
My PhD work is up on bioRxiv! Read all about the #actin and #microtubule #cytoskeleton of the Rhizarian #amoeba Filoreta ramosa here: www.biorxiv.org/content/10.1...
Excited and honored to receive the Holz-Conner award and to present my research at the upcoming #ICOP2025 / #ISOP2025 in Seoul! Looking forward to sharing insights on Rhizarian genomics & metabolism. Join me June 22-27 at Sungkyunkwan University. #protistsonsky #SciComm
March 28, 2025 at 9:42 AM
Excited and honored to receive the Holz-Conner award and to present my research at the upcoming #ICOP2025 / #ISOP2025 in Seoul! Looking forward to sharing insights on Rhizarian genomics & metabolism. Join me June 22-27 at Sungkyunkwan University. #protistsonsky #SciComm
Forams are Rhizarian amoebas that build shells & mostly live on the sea floor, but this antarctic species collects diatoms to use as floaties
A remarkable new monothalamid (Rhizaria, Foraminifera) from the shoreline of Livingston Island, Antarctica
In this study, we describe a novel monothalamous Foraminifera, discovered in shoreline sediment samples from the Southern Ocean. The individuals, appr…
www.sciencedirect.com
November 14, 2025 at 5:49 PM
Forams are Rhizarian amoebas that build shells & mostly live on the sea floor, but this antarctic species collects diatoms to use as floaties
Photos of amoebas:
amoebozoan
rhizarian
discoban (SEM)
amoebozoan
rhizarian
discoban (SEM)
July 28, 2025 at 4:02 AM
Photos of amoebas:
amoebozoan
rhizarian
discoban (SEM)
amoebozoan
rhizarian
discoban (SEM)
A shell within a shell. The arcellinid amoeba Cyclopyxis pirini builds its test out of found materials. This one incorporated a rhizarian shelled amoeba from the other side of the eukaryote tree, Scutiglypha crenulata (=Euglypha acanthophora?).
#ProtistsOnSky #Protists #Amoebae
#ProtistsOnSky #Protists #Amoebae
December 17, 2024 at 1:30 PM
A shell within a shell. The arcellinid amoeba Cyclopyxis pirini builds its test out of found materials. This one incorporated a rhizarian shelled amoeba from the other side of the eukaryote tree, Scutiglypha crenulata (=Euglypha acanthophora?).
#ProtistsOnSky #Protists #Amoebae
#ProtistsOnSky #Protists #Amoebae
Ciliates are on the Alveolate branch of the Harosan kingdom. Some are multicellular: septated or on a common stalk. They are closely related to dinoflagellates (incl. symbionts of coral & jellies), & then to diatoms & giant kelp, & then to rhizarian amoebas, some of which get even larger.
April 6, 2025 at 12:38 PM
Ciliates are on the Alveolate branch of the Harosan kingdom. Some are multicellular: septated or on a common stalk. They are closely related to dinoflagellates (incl. symbionts of coral & jellies), & then to diatoms & giant kelp, & then to rhizarian amoebas, some of which get even larger.
Attention Protistology Hive MInd: Looking for suggestions for the best/most complete/not divergent Rhizarian genome to search.
B. natans is missing something and we'd like to double check if this is a real loss or just false negative.
B. natans is missing something and we'd like to double check if this is a real loss or just false negative.
June 5, 2025 at 3:16 PM
Attention Protistology Hive MInd: Looking for suggestions for the best/most complete/not divergent Rhizarian genome to search.
B. natans is missing something and we'd like to double check if this is a real loss or just false negative.
B. natans is missing something and we'd like to double check if this is a real loss or just false negative.
I made some lovely new friends over the weekend with @couchmicroscopy.bsky.social, @andrewilloughb.bsky.social, and these fantastic (and tiny--15 micron cells) #rhizarian #protistsonsky Paulinella sp. The eukaryote with totally unique and recently acquired photosythesis.
May 13, 2025 at 1:11 PM
I made some lovely new friends over the weekend with @couchmicroscopy.bsky.social, @andrewilloughb.bsky.social, and these fantastic (and tiny--15 micron cells) #rhizarian #protistsonsky Paulinella sp. The eukaryote with totally unique and recently acquired photosythesis.
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
December 16, 2024 at 2:43 PM
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
These critters make their houses out of strontium sulfate, and I don't think any other organism does this. They are rhizarian amoebas that are more closely related to kelp & then to plants than to animals & fungi.
October 3, 2025 at 4:16 PM
These critters make their houses out of strontium sulfate, and I don't think any other organism does this. They are rhizarian amoebas that are more closely related to kelp & then to plants than to animals & fungi.
An archaeon becomes a eukaryote by swallowing a bacterium, becomes a plant by swallowing a cyanobacterium, & becomes a plastid when swallowed by a dinoflagellate. The dinoflagellate then gets swallowed by a collodarian, a multicellular jelly tube made of rhizarian amoebas
January 24, 2025 at 3:36 PM
An archaeon becomes a eukaryote by swallowing a bacterium, becomes a plant by swallowing a cyanobacterium, & becomes a plastid when swallowed by a dinoflagellate. The dinoflagellate then gets swallowed by a collodarian, a multicellular jelly tube made of rhizarian amoebas
A hydrogen-producing mitochondrion in an anaerobic eukaryotrophic rhizarian #SingleCell 🧪🧬🖥️
https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
September 27, 2026 at 1:01 PM
A hydrogen-producing mitochondrion in an anaerobic eukaryotrophic rhizarian #SingleCell 🧪🧬🖥️
https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
https://www.biorxiv.org/content/10.64898/2026.09.23.753574v1
The Rhizarian amoeba Filoreta ramosa develops a neuron-like arborized network using conserved cytoskeletal mechanisms https://www.biorxiv.org/content/10.1101/2025.10.24.684464v1
October 25, 2025 at 10:30 AM
The Rhizarian amoeba Filoreta ramosa develops a neuron-like arborized network using conserved cytoskeletal mechanisms https://www.biorxiv.org/content/10.1101/2025.10.24.684464v1
These are rhizarians, in the Harosan Kingdom! They are closely related to collodarian jelly tubes & gromiids, then kelp & diatoms.
Unlike discoban & amoebozoan amoebas, rhizarian amoebas have microtubules in their pseudopods. This is also true of the few harosan amoebas found outside Rhizaria.
Unlike discoban & amoebozoan amoebas, rhizarian amoebas have microtubules in their pseudopods. This is also true of the few harosan amoebas found outside Rhizaria.
March 18, 2025 at 5:59 PM
These are rhizarians, in the Harosan Kingdom! They are closely related to collodarian jelly tubes & gromiids, then kelp & diatoms.
Unlike discoban & amoebozoan amoebas, rhizarian amoebas have microtubules in their pseudopods. This is also true of the few harosan amoebas found outside Rhizaria.
Unlike discoban & amoebozoan amoebas, rhizarian amoebas have microtubules in their pseudopods. This is also true of the few harosan amoebas found outside Rhizaria.