Thomas Desvignes

Updating some of my ocean heat content graphics tonight with data for 2025, which required extending the y-axis upper limit and steepening the rate of the linear trend. Meanwhile just read another article describing declining newspaper coverage on climate change. So many feelings, all the time.

Fun time bringing some students of my Aquatic Biodiversity and Conservation course to the local Turkey Creek Nature Preserve to learn about endangered darter fish, turtles, bats, and more!

Thank you for the tour and all the great explanations Jefferson County Greenway staff!
🌎🧪🐟
#UABbiology

Only one week left for abstracts to the @scar-antarctic.bsky.social SCAR Open Science Conference in Oslo this summer!
Come share your fish evolution studies!
🇦🇶🧊🐟🌎🧪
@usscar-antarctic.bsky.social
@mmatschiner.bsky.social
#antarctica #TeamFish #FishSci

All evolutionary studies are welcome! From taxonomy and systematics, morphology and physiology, to the molecular evolution of specific gene families!
Don't hesitate to contact us if you wonder if your work would fit the session!

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

Super cool indeed!

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!
🧪🌎🐟🧊🇦🇶

Obviously the nascent zebrafish unicorn!

It does look like one of them indeed! Thanks for sharing!

Hmm, this one I really don't know. The huge eyes are throwing me off. That's a species out of my expertise... sorry!

Thanks!
Yes, given the area and the size of the fish P. ramsayi seems like a good possibility!

Yes, eelpout!

Do you have a Lat/Long or a rough area? And some stills maybe? I have hard time seeing clearly the first dorsal. But yes, good call! Could be a notothenioid, although not a Notothenia, more likely Patagonotothen, possibly P. ramsayi.

Learn about the Teleost Zoo with #TeleostTalk!

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Hemoglobin-Gene Cluster Deletions in Antarctic White-Blooded Icefishes Facilitated by Transposable Elements Abstract. Vertebrates transport oxygen throughout the body bound to hemoglobin packed in red blood cells. Antarctic icefishes are evolutionary oddities wit

We recently published a follow up in a new article published in @genomebiolevol.bsky.social about the hemoglobin gene cluster deletions in the icefish ancestor. We show that each deletion involve different mechanisms and that transposons fueled these deletions!
🐟🧪🌎🧊🇦🇶
academic.oup.com/gbe/article/...

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

For #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! 🧪🌎🐟

Awe! I love that!! I'm glad people liked it! 🤩

I am!

That's what I see from my place... maybe around little bit of pink!!

Rumoured photo from the first international workshop on zebrafish at the university of oregon. Image credit to Cecilia Moens. How many people can you spot?

The first international workshop that focused on #zebrafish was convened in 1990 in Eugene, Oregon. Sponsored by NIH and NSF, the gathering of ∼40 scientists sought to evaluate the research potential of the tiny fish. Today, nearly 1,800+ zebrafish labs exist worldwide. #ZebrafishFunFacts 🧪

Inject some #zebrafish into your timeline with our updated Starter Packs! 🧪

WomenInScience v1: go.bsky.app/4BegEjv
"" v2: go.bsky.app/VoebYrt
Resources: go.bsky.app/JcC5df3
Sr. Scientists & PIs v1: go.bsky.app/2cHYybY
"" v2: go.bsky.app/4zBuxAF
"" v3: go.bsky.app/JvjuSZg
"" v4: go.bsky.app/2c4WLQK

I hear ya! I do the same once in a while!

Frontiers | A finding of maintained cryonotothenioid nesting sites in the Western Weddell Sea The Weddell Sea is one of Earth’s most remote and least studied regions. The region around the Larsen C Ice shelf has been largely inaccessible because of it...

He's the link to the scientific article:
www.frontiersin.org/journals/mar...

Deep Antarctic waters hold geometric communities of fish nests Scientists found thousands of patterned fish nests in Antarctica’s Weddell Sea, boosting calls for marine protected areas.

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...

🚨 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...

MBE | Temperature and Pressure Shaped the Evolution of Antifreeze Proteins in Polar and Deep Sea Zoarcoid Fishes A graphic visualizing the finding by Bogan et al. that antifreeze protein (AFP) genes increased in copy number among shallow-water, polar species of Zoarcoidei fishes. Top left: Pholis gunnellus photographed by Chris Isaacs (CC-BY-NC). Top right: Cebidichthys violaceus photographed by Alex Heyman (CC0 1.0). Bottom left: Lycenchelys sp. photographed by Julien Savoie (CC BY 4.0). Bottom right: Lycodes sp. photographed by Julien Savoie (CC BY 4.0).

@snbogan.bsky.social @notothentoma.bsky.social @scotthotaling.bsky.social @paulbfrandsen.bsky.social et al. explore the evolution of type III antifreeze proteins in deep sea zoarcoid fishes.

🔗 doi.org/10.1093/molbev/msaf219

#evobio #molbio