C. Chen @ Jamsteeeec
@squamiferum.bsky.social
Deep-sea biologist / Malacologist @JAMSTEC and @Senckenberg. Chemosynthesis-based ecosystems. 海洋生物学者・深海・軟体動物・化学合成生態系。
Website: https://squamiferum.net
See the collection: https://www.conchology.be/?t=92
Website: https://squamiferum.net
See the collection: https://www.conchology.be/?t=92
Pinned
[New Paper] We found a SECOND SNAIL with HARD SCALES on the foot -- Ifremeria nautilei lives in deep-sea hot vents and makes chitinous scales not by secretion but by cell differentiation, like our own skin!
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
[New Paper] Two shrimp species, Rimicaris loihi and R. cambonae, live side by side at hydrothermal vents — yet remain genetically distinct. Our genomic data and decadal sampling reveal insights on their demography and speciation!
Out now in Molecular Ecology, OPEN ACCESS: doi.org/10.1111/mec....
Out now in Molecular Ecology, OPEN ACCESS: doi.org/10.1111/mec....
October 11, 2025 at 12:14 PM
[New Paper] Two shrimp species, Rimicaris loihi and R. cambonae, live side by side at hydrothermal vents — yet remain genetically distinct. Our genomic data and decadal sampling reveal insights on their demography and speciation!
Out now in Molecular Ecology, OPEN ACCESS: doi.org/10.1111/mec....
Out now in Molecular Ecology, OPEN ACCESS: doi.org/10.1111/mec....
[New Paper] names Chaetoderma naga, a gigantic (>13 cm) new worm-mollusc from a cold seep! Like its sister-species C. shenloong, it probably relies on endosymbiotic bacteria for energy. We named it after Nāga, a snake-god from Asian mythologies!
Out now in Moll. Res., LINK: doi.org/10.1080/1323...
Out now in Moll. Res., LINK: doi.org/10.1080/1323...
October 10, 2025 at 4:20 PM
[New Paper] names Chaetoderma naga, a gigantic (>13 cm) new worm-mollusc from a cold seep! Like its sister-species C. shenloong, it probably relies on endosymbiotic bacteria for energy. We named it after Nāga, a snake-god from Asian mythologies!
Out now in Moll. Res., LINK: doi.org/10.1080/1323...
Out now in Moll. Res., LINK: doi.org/10.1080/1323...
[New Paper] in Zootaxa names new genus Lobatoradarea in the amphipod family Calliopiidae, with 10 new species found across a wide range of marine habitats from shallow subtidal waters to a deep-sea hydrothermal vent!
Link to the paper: mapress.com/zt/article/v...
Link to the paper: mapress.com/zt/article/v...
October 2, 2025 at 1:02 AM
[New Paper] in Zootaxa names new genus Lobatoradarea in the amphipod family Calliopiidae, with 10 new species found across a wide range of marine habitats from shallow subtidal waters to a deep-sea hydrothermal vent!
Link to the paper: mapress.com/zt/article/v...
Link to the paper: mapress.com/zt/article/v...
We disembarked from research vessel R/V YOKOSUKA in #Chichijima Island, #Bonin ( #Ogasawara ) Islands! The only way back to the main island of Japan is by a biweekly 24-hours ferry trip, so we got a couple days to see the islands!
October 1, 2025 at 1:42 PM
We disembarked from research vessel R/V YOKOSUKA in #Chichijima Island, #Bonin ( #Ogasawara ) Islands! The only way back to the main island of Japan is by a biweekly 24-hours ferry trip, so we got a couple days to see the islands!
[New Paper] Names Pyropelta artemis, a new deep-sea limpet from the Off Hatsushima seep in Japan! This species 'shape-shifts' its shell to fit the substrate shape, which we likened to the moon's waxing and waning.
Just out in Contributions to Zoology, OPEN ACCESS: brill.com/view/journal...
Just out in Contributions to Zoology, OPEN ACCESS: brill.com/view/journal...
September 27, 2025 at 6:46 AM
[New Paper] Names Pyropelta artemis, a new deep-sea limpet from the Off Hatsushima seep in Japan! This species 'shape-shifts' its shell to fit the substrate shape, which we likened to the moon's waxing and waning.
Just out in Contributions to Zoology, OPEN ACCESS: brill.com/view/journal...
Just out in Contributions to Zoology, OPEN ACCESS: brill.com/view/journal...
Rare shots of JAMSTEC deep-sea research vessels: recovering HOV SHINKAI 6500 with the drilling vessel CHIKYU in the background!
Suruga Bay, Japan.
Suruga Bay, Japan.
September 26, 2025 at 1:09 AM
Rare shots of JAMSTEC deep-sea research vessels: recovering HOV SHINKAI 6500 with the drilling vessel CHIKYU in the background!
Suruga Bay, Japan.
Suruga Bay, Japan.
Reposted by C. Chen @ Jamsteeeec
NEW #DEEPSEA SNAIL WITH HARD SCALES! #molluscmonday
[New Paper] We found a SECOND SNAIL with HARD SCALES on the foot -- Ifremeria nautilei lives in deep-sea hot vents and makes chitinous scales not by secretion but by cell differentiation, like our own skin!
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
September 1, 2025 at 2:39 PM
NEW #DEEPSEA SNAIL WITH HARD SCALES! #molluscmonday
[New Paper] We found a SECOND SNAIL with HARD SCALES on the foot -- Ifremeria nautilei lives in deep-sea hot vents and makes chitinous scales not by secretion but by cell differentiation, like our own skin!
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
August 27, 2025 at 4:08 AM
[New Paper] We found a SECOND SNAIL with HARD SCALES on the foot -- Ifremeria nautilei lives in deep-sea hot vents and makes chitinous scales not by secretion but by cell differentiation, like our own skin!
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
@royalsocietypublishing.org Proceedings B, OPEN ACCESS: doi.org/10.1098/rspb...
Reposted by C. Chen @ Jamsteeeec
This article in BBC Wildlife outlines the discovery of a 'giant' limpet discovered 5,922m below the Pacific, described by @squamiferum.bsky.social in @zse.pensoft.net.
www.discoverwildlife.com/animal-facts...
www.discoverwildlife.com/animal-facts...
Deep-sea submersible discovers 'giant' animal 5,922m down in Pacific abyss | Discover Wildlife
The creature was found during a deep-sea expedition 500km south-east of Japan.
www.discoverwildlife.com
July 28, 2025 at 8:23 AM
This article in BBC Wildlife outlines the discovery of a 'giant' limpet discovered 5,922m below the Pacific, described by @squamiferum.bsky.social in @zse.pensoft.net.
www.discoverwildlife.com/animal-facts...
www.discoverwildlife.com/animal-facts...
Reposted by C. Chen @ Jamsteeeec
JAMSTECのしんかい6500の調査で、新種の巨大カサガイBathylepeta wadatsumiを発見
今までの同属の3 cmを上回る殻長40.5 mmという巨大さから漫画ONE PIECEに出てくる大入道ワダツミと日本神話の海神からwadatsumiと命名
謝辞や参考文献にONE PIECE魚人編が引用されています
【原著論文、画像引用元 (CC BY 4.0)】
zse.pensoft.net/article/1562...
今までの同属の3 cmを上回る殻長40.5 mmという巨大さから漫画ONE PIECEに出てくる大入道ワダツミと日本神話の海神からwadatsumiと命名
謝辞や参考文献にONE PIECE魚人編が引用されています
【原著論文、画像引用元 (CC BY 4.0)】
zse.pensoft.net/article/1562...
July 26, 2025 at 7:51 AM
JAMSTECのしんかい6500の調査で、新種の巨大カサガイBathylepeta wadatsumiを発見
今までの同属の3 cmを上回る殻長40.5 mmという巨大さから漫画ONE PIECEに出てくる大入道ワダツミと日本神話の海神からwadatsumiと命名
謝辞や参考文献にONE PIECE魚人編が引用されています
【原著論文、画像引用元 (CC BY 4.0)】
zse.pensoft.net/article/1562...
今までの同属の3 cmを上回る殻長40.5 mmという巨大さから漫画ONE PIECEに出てくる大入道ワダツミと日本神話の海神からwadatsumiと命名
謝辞や参考文献にONE PIECE魚人編が引用されています
【原著論文、画像引用元 (CC BY 4.0)】
zse.pensoft.net/article/1562...
[New Paper] in @zse.pensoft.net names Bathylepeta wadatsumi, the world’s DEEPEST true limpet from 6 km deep! Giant sized (4 cm) for this depth, we named it after the god of sea in Japan & also the Large Monk “Wadatsumi” from the manga series ONE PIECE!
OPEN ACCESS: doi.org/10.3897/zse....
OPEN ACCESS: doi.org/10.3897/zse....
July 25, 2025 at 1:15 AM
[New Paper] in @zse.pensoft.net names Bathylepeta wadatsumi, the world’s DEEPEST true limpet from 6 km deep! Giant sized (4 cm) for this depth, we named it after the god of sea in Japan & also the Large Monk “Wadatsumi” from the manga series ONE PIECE!
OPEN ACCESS: doi.org/10.3897/zse....
OPEN ACCESS: doi.org/10.3897/zse....
Reposted by C. Chen @ Jamsteeeec
A new species of deep-sea limpet, discovered 6 km beneath the northwestern Pacific, has beeen named after a #ONEPIECE character.
Find out why on the @pensoft.net blog: blog.pensoft.net/2025/07/24/n...
Find out why on the @pensoft.net blog: blog.pensoft.net/2025/07/24/n...
New deep-sea species named after ONE PIECE character
Found 6 km beneath the Pacific, the limpet's unusually large size inspired its name.
blog.pensoft.net
July 24, 2025 at 2:09 PM
A new species of deep-sea limpet, discovered 6 km beneath the northwestern Pacific, has beeen named after a #ONEPIECE character.
Find out why on the @pensoft.net blog: blog.pensoft.net/2025/07/24/n...
Find out why on the @pensoft.net blog: blog.pensoft.net/2025/07/24/n...
[New Paper] in European J of Taxonomy names 1 new genus and 3 new species of XENOPHYOPHORES -- giant single-celled foraminifera! We integrate in situ imagery, dissection, SEM, micro-CT, and molecular phylogeny for unprecedentedly detailed descriptions for xenos.
OPEN ACCESS: doi.org/10.5852/ejt....
OPEN ACCESS: doi.org/10.5852/ejt....
July 24, 2025 at 7:19 AM
[New Paper] in European J of Taxonomy names 1 new genus and 3 new species of XENOPHYOPHORES -- giant single-celled foraminifera! We integrate in situ imagery, dissection, SEM, micro-CT, and molecular phylogeny for unprecedentedly detailed descriptions for xenos.
OPEN ACCESS: doi.org/10.5852/ejt....
OPEN ACCESS: doi.org/10.5852/ejt....
[New Paper] Reveals 4 distinct metapopulations in the hot vent mussel Bathymodiolus septemdierum found across the Indo-W Pacific! With implications for conservation in the face of upcoming deep-sea mining.
Out now in Journal of Biogeography, OPEN ACCESS: doi.org/10.1111/jbi....
Out now in Journal of Biogeography, OPEN ACCESS: doi.org/10.1111/jbi....
July 19, 2025 at 11:16 AM
[New Paper] Reveals 4 distinct metapopulations in the hot vent mussel Bathymodiolus septemdierum found across the Indo-W Pacific! With implications for conservation in the face of upcoming deep-sea mining.
Out now in Journal of Biogeography, OPEN ACCESS: doi.org/10.1111/jbi....
Out now in Journal of Biogeography, OPEN ACCESS: doi.org/10.1111/jbi....
[New Paper] reporting 8 distinct mollusc eggs from abyssal and hadal depths of Aleutian Trench is now out in Progress in Oceanography! With a potential Dumbo Octopus egg + at least 5 snail eggs!
OPEN ACCESS: www.sciencedirect.com/science/arti...
With @sigwartae.bsky.social @oceanspecies.bsky.social
OPEN ACCESS: www.sciencedirect.com/science/arti...
With @sigwartae.bsky.social @oceanspecies.bsky.social
July 13, 2025 at 4:53 PM
[New Paper] reporting 8 distinct mollusc eggs from abyssal and hadal depths of Aleutian Trench is now out in Progress in Oceanography! With a potential Dumbo Octopus egg + at least 5 snail eggs!
OPEN ACCESS: www.sciencedirect.com/science/arti...
With @sigwartae.bsky.social @oceanspecies.bsky.social
OPEN ACCESS: www.sciencedirect.com/science/arti...
With @sigwartae.bsky.social @oceanspecies.bsky.social
[New Paper] Uses phylogenomics to resolve how deep-sea symbiotic vesicomyid clams evolved to conquer the abyss; revising some the genus-level taxonomy along the way!
Just out in the journal Cladistics, read for FREE here: onlinelibrary.wiley.com/share/author...
Just out in the journal Cladistics, read for FREE here: onlinelibrary.wiley.com/share/author...
June 24, 2025 at 9:04 AM
[New Paper] Uses phylogenomics to resolve how deep-sea symbiotic vesicomyid clams evolved to conquer the abyss; revising some the genus-level taxonomy along the way!
Just out in the journal Cladistics, read for FREE here: onlinelibrary.wiley.com/share/author...
Just out in the journal Cladistics, read for FREE here: onlinelibrary.wiley.com/share/author...
[New Paper] @zoojlinnsoc.bsky.social reports three capitellid polychaetes from Indian Ocean deep-sea hot vents, two of them described as new species! Phylogenetic analysis reveals two independent origins of capitellids in chemosynthetic ecosystems.
FREE ACCESS: academic.oup.com/zoolinnean/a...
FREE ACCESS: academic.oup.com/zoolinnean/a...
June 16, 2025 at 9:34 AM
[New Paper] @zoojlinnsoc.bsky.social reports three capitellid polychaetes from Indian Ocean deep-sea hot vents, two of them described as new species! Phylogenetic analysis reveals two independent origins of capitellids in chemosynthetic ecosystems.
FREE ACCESS: academic.oup.com/zoolinnean/a...
FREE ACCESS: academic.oup.com/zoolinnean/a...
[New Paper] in The Nautilus names Naquetia confusa, a new species of muricid snail from Palawan, Philippines! It was previously confused with the morphologically similar N. vokesae from the Indian Ocean.
Read the paper: www.researchgate.net/publication/...
Read the paper: www.researchgate.net/publication/...
June 10, 2025 at 11:35 PM
[New Paper] in The Nautilus names Naquetia confusa, a new species of muricid snail from Palawan, Philippines! It was previously confused with the morphologically similar N. vokesae from the Indian Ocean.
Read the paper: www.researchgate.net/publication/...
Read the paper: www.researchgate.net/publication/...
[New Paper] @zoojlinnsoc.bsky.social presents 2 NEW deep-sea vent snails from Atlantic! Being giants for their genera, they're named after the giants "Gargantua and Pantagruel" in François Rabelais' novels. Peltospira gargantua is likely to have symbionts!
OPEN ACCESS: doi.org/10.1093/zool...
OPEN ACCESS: doi.org/10.1093/zool...
June 6, 2025 at 2:08 AM
[New Paper] @zoojlinnsoc.bsky.social presents 2 NEW deep-sea vent snails from Atlantic! Being giants for their genera, they're named after the giants "Gargantua and Pantagruel" in François Rabelais' novels. Peltospira gargantua is likely to have symbionts!
OPEN ACCESS: doi.org/10.1093/zool...
OPEN ACCESS: doi.org/10.1093/zool...
April 4, 2025 at 10:53 PM
The Divine Dragon Glistenworm (Chaetoderma shenloong) we named is one of the TOP-TEN MARINE SPECIES OF 2024 @WRMarineSpecies !! It is actually a wormy mollusc from methane seeps, and uses a new organelle “dracosphera” (“Dragon Ball”) to house symbiotic bacteria!
Our paper: doi.org/10.3897/zse....
Our paper: doi.org/10.3897/zse....
March 19, 2025 at 1:06 AM
The Divine Dragon Glistenworm (Chaetoderma shenloong) we named is one of the TOP-TEN MARINE SPECIES OF 2024 @WRMarineSpecies !! It is actually a wormy mollusc from methane seeps, and uses a new organelle “dracosphera” (“Dragon Ball”) to house symbiotic bacteria!
Our paper: doi.org/10.3897/zse....
Our paper: doi.org/10.3897/zse....
Reposted by C. Chen @ Jamsteeeec
(2/10) Although it looks like a worm, the Divine Dragon Glistenworm is actually a mollusc!
marinespecies.org/worms-top-te...
@squamiferum.bsky.social
#toptenmarinespecies #taxonomistappreciationday #OceanDecade #GenOcean #marinespecies #deepsea
marinespecies.org/worms-top-te...
@squamiferum.bsky.social
#toptenmarinespecies #taxonomistappreciationday #OceanDecade #GenOcean #marinespecies #deepsea
March 19, 2025 at 12:15 AM
(2/10) Although it looks like a worm, the Divine Dragon Glistenworm is actually a mollusc!
marinespecies.org/worms-top-te...
@squamiferum.bsky.social
#toptenmarinespecies #taxonomistappreciationday #OceanDecade #GenOcean #marinespecies #deepsea
marinespecies.org/worms-top-te...
@squamiferum.bsky.social
#toptenmarinespecies #taxonomistappreciationday #OceanDecade #GenOcean #marinespecies #deepsea
Reposted by C. Chen @ Jamsteeeec
Read 'Integrative morphological, mitogenomic and phylogenetic analyses reveal new vent-dwelling scallop species' by Yi-Tao Lin, Ying-Bei Peng, @squamiferum.bsky.social, Ting Xu & Jian-Wen Qiu in Invertebrate Systematics:
www.publish.csiro.au/IS/IS24091
#InvertebrateSys
Photo: Yi-Tao Lin
4/4
www.publish.csiro.au/IS/IS24091
#InvertebrateSys
Photo: Yi-Tao Lin
4/4
March 18, 2025 at 1:23 AM
Read 'Integrative morphological, mitogenomic and phylogenetic analyses reveal new vent-dwelling scallop species' by Yi-Tao Lin, Ying-Bei Peng, @squamiferum.bsky.social, Ting Xu & Jian-Wen Qiu in Invertebrate Systematics:
www.publish.csiro.au/IS/IS24091
#InvertebrateSys
Photo: Yi-Tao Lin
4/4
www.publish.csiro.au/IS/IS24091
#InvertebrateSys
Photo: Yi-Tao Lin
4/4
Reposted by C. Chen @ Jamsteeeec
From Ecology's #TheScientificNaturalist series: a relationship that blooms anew after 200+ million years...but with different players 👇
[New Paper] in Ecology reveals deep-sea snails in family Laubierinidae as obligate associates of crinoids (likely parasitic), including first-ever in situ observations of all 4 genera! This relationship was last seen in fossils >200 mil years old!
FREE READ: onlinelibrary.wiley.com/share/author...
FREE READ: onlinelibrary.wiley.com/share/author...
March 10, 2025 at 6:33 PM
From Ecology's #TheScientificNaturalist series: a relationship that blooms anew after 200+ million years...but with different players 👇
Reposted by C. Chen @ Jamsteeeec
FINALLY! a possible explanation for the snail on stalked crinoids we saw during #Okeanos EX1705! #molluscmonday #echinoday
March 8, 2025 at 3:57 PM
FINALLY! a possible explanation for the snail on stalked crinoids we saw during #Okeanos EX1705! #molluscmonday #echinoday