Thomas Desvignes
🐟🐠🐡Fish Ecophysiologist and Evolutionary Biologist at the University of Alabama at Birmingham (UAB). I love all aquatic life, but my heart goes to Antarctic notothenioid fishes.🇨🇵 🇦🇶 🇺🇲
https://www.thomasdesvignes.com
- Only ~3 weeks left to submit abstracts to the @scar-antarctic.bsky.social meeting in Oslo! Come present your work on Antarctic and/or sub-Antarctic fish evolution in session#21 convened by @mmatschiner.bsky.social, Julia York, Jin-Hyoung Kim, and myself! All the fishes are welcome!❤️🐟🧪🌎🇦🇶 scar2026.org
- Happy Friday night!
- Those look like many Paragonotothen ramsayi! 🤩 It's one of the species whose Antarctic Notothenioidei ancestor readapted to life in more temperate waters and subsequently diversified in over a dozen species around Patagonia, thus the genus name Patagonotothen! 🧪🌎🐟🧊🇦🇶
- A bustling seafloor scene from the #taleof2canyons expedition: “We studied how these canyons can facilitate such incredible biodiversity,” said Chief Scientist Dr. Silvia Ines Romero. “What are the mechanisms — the currents and the chemistry — that support all of this life?”
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- Come tell us about your cool new evolutionary work on Antartic (and/or sub-Antarctic) fishes! It doesn't have to be notothenioids, we love all the fishes (and Evolution)!! 🧪🌎🐟🧊🇦🇶 @scar-antarctic.bsky.social @usscar-antarctic.bsky.social
- Reposted by Thomas DesvignesFor #AntarcticaDay, do you know the #fish that live in the frigid waters around the icy continent?! blogs.uoregon.edu/antarcticfis... 🧪🌍🇦🇶🐟🐠🐡🌊🐧🧊 #sciart #TeamFish
- Awesome first day of talks at the 2025 Southeastern Fishes Council (SFC) in Tuscaloosa, AL! Great diversity of impressive student talks on the incredible fish biodiversity of the South! 🧪🌎🐟
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- I was recently interviewed by @sciencenews.bsky.social about the discovery of new Antarctic #fish nesting in the fragile Weddell Sea in #antarctica. This time it was the yellow fin notie Nototheniops nudifrons nesting, likely in groups! 🧪 🌎 🇦🇶 🐟 🧊 www.sciencenews.org/article/anta...
- Reposted by Thomas Desvignes🚨 Recruiting 12 PhD students for a new NSF-funded program at the University of Alaska Fairbanks College of Fisheries and Ocean Sciences! This program is for U.S. students who received an Honorable Mention on the NSF GRFP within the last 3 years. @uafairbanks.bsky.social www.uaf.edu/cfos/academi...
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- Reposted by Thomas Desvignes@notothentoma.bsky.social @arcolon14.bsky.social & @jpostlethwait.bsky.social show how Antarctic white-blooded icefishes, the only vertebrates without hemoglobin, independently lost hemoglobin cluster genes, driven by TEs and repeats. 🔗 doi.org/10.1093/gbe/evaf184 #genome #evolution #TEsky
- Reposted by Thomas DesvignesExcited to share this work, out today in MBE! In polar fishes, we found that antifreeze protein genes expanded in copy number at low temperatures and contracted in the deep sea, highlighting a role of depth and pressure in AFP evolution. 🔗 academic.oup.com/mbe/article/...
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- Reposted by Thomas DesvignesFirst pop gen paper from our lab! We find repeated evolutionary turn over of sex chromosomes in darters contributes to reproductive isolation. Turnover may be an escape hatch to resolve mitonuclear conflict & neo sex chromosomes evolved via a rare recessive mutation. www.biorxiv.org/content/10.1...
- Few months ago I commissioned artist @hidet0shi.bsky.social a drawing of the Antarctic dragonfish we described last year, with if possible both the fish and the RV Laurence M Gould as the fish was named after the ship: Akarotaxis gouldae! It turned out so beautiful I made stickers out it! 🧪🌎🐟🧊🇦🇶
- While trying to see if two populations of the Antarctic longfin icedevil fish Aethotaxis mitopteryx were genetically differentiated, we uncovered a clear sex signal demonstrating that in this rarely encountered species males are the heterogametic sex! 🧪🐟🌎🐧🧊🧬 onlinelibrary.wiley.com/doi/10.1002/...
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- First "official" lab meeting in the books at UAB Biology! 🐟🧪🧬
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- Environmental conditions influence life history traits, but what about in Antarctic fish?🐟🇦🇶 We compared two pops of Crowned Notothens Trematomus scotti: one from a fjord of the Antarctic Peninsula and one from the Weddell Sea. Their life histories traits were very different! tinyurl.com/mtmmrv8w 🧪🌎🐧
- Reposted by Thomas DesvignesThe Braasch Lab @fishevodevogeno.bsky.social will soon post a position to replace manager of our *Ancient Fish Facility* at Michigan State. Looking for aquaculturist excited for unusual 🐟 species (gar, bowfin, paddlefish, polypterus) + zebrafish. Pls send candidates our way (DM or braasch@msu.edu)!
