Robin Leeuwis
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leeuwisrobin.bsky.social
Robin Leeuwis
@leeuwisrobin.bsky.social
260 followers 510 following 26 posts
Animal physiology postdoc @NTNU interested in 🐟 and global change. Passionate about science and education, also Dutch and 🏳️‍🌈 (she/her).
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leeuwisrobin.bsky.social
Robin Leeuwis @leeuwisrobin.bsky.social · Oct 24
Tired of manually landmarking hundreds of images? 📍🖼️😩 Our lab developed HusMorph, a free and open-source tool that automates morphometric landmarking using #MachineLearning — no coding required. Simply train the model on your images, and it quickly places landmarks with human-level accuracy. #AI
Reposted by Robin Leeuwis
jutfelt.bsky.social
121 scientists from 27 countries! Join!
jutfelt.bsky.social Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 22d
Interested in thermal biology? Please join our new and growing grass roots initiative, the Thermal Ecology Alliance, initiated by @patricepottier.bsky.social. 🧪🐟🦑🌡️

Sign up here: www.thermalecologyalliance.org#participation

Check who already signed up:
www.thermalecologyalliance.org#community
Fish embryos under the microscope
November 10, 2025 at 6:27 AM
Reposted by Robin Leeuwis
jutfelt.bsky.social
Excellent article on the oxygen limitation during warming discussions, and our recent paper on the topic.

By @dianasmadeira.bsky.social 🐟🧪
plosbiology.org PLOS Biology @plosbiology.org · 19d
Oxygen limitation is considered a key mechanism of #ThermalTolerance. @dianasmadeira.bsky.social explores how a @plosbiology.org study challenges this idea, showing minimal protective effects of O2 supersaturation in heat-stressed #aquatic #ectotherms 🧪 Paper: plos.io/43hzMQa Primer: plos.io/3XeUtbS
The effects of temperature on organismal performance are depicted using thermal performance curves, where performance is greatest at the optimal temperature and starts to decrease toward cooler or warmer temperatures, reflecting the thermal window (tolerable range of temperatures) of the species. Briefly, the Oxygen and Capacity Limited Thermal Tolerance hypothesis proposes that oxygen limitation explains the performance decline at high temperatures and sets the first boundary for thermal limits across ectotherms. This is due to a mismatch between the oxygen demand of the organism and the capacity of the cardiorespiratory system to supply oxygen to tissues when the organism is under warming. This concept is central to predict species responses to warming. As oxygen supersaturation in water has been shown to alleviate oxygen supply limitations by increasing maximum rates of oxygen transport in blood, Raby and colleagues (2025) tested the effects of oxygen supersaturation on thermal tolerance across 14 aquatic species. The authors found that it had negligible effects on upper thermal limits, challenging the oxygen limitation hypothesis as a universal mechanism underpinning thermal tolerance of aquatic ectotherms. The authors highlight that oxygen supersaturation in water, a naturally occurring phenomenon in shallow waters, may not protect aquatic species from the effects of extreme heat.
November 7, 2025 at 2:38 PM
Reposted by Robin Leeuwis
jutfelt.bsky.social
Oxygen supersaturation has been reported to protect aquatic animals from heat waves. We tested this in a large collaborative experiment on many species of fish and crustaceans. Our new paper in @plosbiology.org shows that the effect of hyperoxia on thermal tolerance is negligible. Unfortunately.
November 5, 2025 at 10:34 AM
leeuwisrobin.bsky.social
Tired of manually landmarking hundreds of images? 📍🖼️😩 Our lab developed HusMorph, a free and open-source tool that automates morphometric landmarking using #MachineLearning — no coding required. Simply train the model on your images, and it quickly places landmarks with human-level accuracy. #AI
October 24, 2025 at 4:10 PM
Reposted by Robin Leeuwis
whatahoot.bsky.social
A terrific afternoon for fish biology here at #SEBconference ❤️🐟 Great talks by @leeuwisrobin.bsky.social, Moa Metz, and @erinmcstewart.bsky.social about different ways that fish respond to climate warming!
A scientist presents her take-away slide on a large dark stage. It reads: Take-away • Zebrafish can evolve improved growth at warmer temperatures • Thermal performance curves can undergo a left or right shift • Ectothermic vertebrates may adapt to global warming by enhancing performance • Role of selection in shaping thermal resilence A scientist presents her title slide on a large stage, it features a beautiful picture of a brook trout. A scientist presents the methods of her research on a large screen
July 8, 2025 at 3:49 PM
Reposted by Robin Leeuwis
lorenasilvag.bsky.social
Happy to share my first thesis chapter from my PhD at NTNU, published in Journal of Thermal Bio! “No Oxygen limitation of Upper Thermal Tolerance in Zebrafish Regardless of Acclimation Temperature” 🔓🐟🌡️

@jutfelt.bsky.social @annahandreassen.bsky.social @rasmusern.bsky.social
June 16, 2025 at 8:33 PM
leeuwisrobin.bsky.social
New research paper out about how fishes acclimate to different water temperatures! 🐟 It's in @conphysjournal.bsky.social and OA! 🔓 doi.org/10.1093/conp... We looked at the role of blood plasma factors and skin temperature sensation in this study 🩸 ♨️ Recap in the threat below for those interested 😊
June 29, 2025 at 4:30 AM
Reposted by Robin Leeuwis
jaydebon.bsky.social
🚨Preprint alert!🚨

We found that relevant levels of aquatic oxygen supersaturation do not always offer protective benefits to aquatic ectotherms during acute warming. 🌡️

Big collaborative project with A LOT of CTmax trials!!!

ecoevorxiv.org/repository/v...
Oxygen supersaturation has negligible effects on warming tolerance in aquatic ectotherms
ecoevorxiv.org
May 16, 2025 at 2:23 PM
Reposted by Robin Leeuwis
jutfelt.bsky.social
How do fish evolve to tolerate higher temperatures, and are there trade-offs? We explore these questions in our new paper
@natclimate.nature.com led by Anna Andreassen
@annahandreassen.bsky.social

www.nature.com/articles/s41...
🧪🐟🦑
May 14, 2025 at 9:20 AM
leeuwisrobin.bsky.social
Thank you so much @sebiology.bsky.social and @avianevans.bsky.social for featuring our artificial selection research in zebrafish in the Spring society magazine! 📰🙏🐟 ☺️ The whole issue is a great read, filled with fantastic news from the experimental biology community👌🔬🌱🌍
sebiology.bsky.social SEBiology @sebiology.bsky.social · May 22
📢 The Spring 2025 issue of SEB Magazine is now available!

Explore how experimental biology is helping tackle global challenges 🌍

✨ Featuring conference highlights, tools of tomorrow, inspiring interviews & more!

🔗 Read now:
www.sebiology.org/resource/the...
The Spring 2025 issue of SEB Magazine is now available on demand!
Explore the latest in biology with SEB Magazine Winter 2025, featuring groundbreaking insights on protein expression, epigenetics, and gene regulation.
www.sebiology.org
May 22, 2025 at 4:23 PM
Reposted by Robin Leeuwis
drtblew.bsky.social
Lab animals deserve enriching environments, but what if our efforts to help unintentionally cause harm? In our ES&T perspective, we explore how leaching plastics and plastic additives may impact fish health, and your experiments...
April 25, 2025 at 4:21 PM
Reposted by Robin Leeuwis
core-coeur.bsky.social
On y va! 🇨🇦 Let's go!

Researchers are ready for #Elxn45! We'll vote for candidates who see that #TeamCanada needs a robust research sector to thrive.🗳️Les chercheur.e.s sont prêt.e.s à voter pour la recherche et ses atouts pour #ÉquipeCanada!

Info: core-coeur.ca

#VotonsRecherche #ResearchersVote
A rectangular image with navy blue background and bilingual text in all caps coloured pale blue, white, yellow, which reads: Researchers in Canada vote. Les chercheur.e.s votent. A white footer includes the logo for CORE-COEUR Coalition for Research Excellence, Coalition pour l'excellence en recherche, a multicoloured mosaic with a partial orange heart and a partial blue heart. Une image rectangulaire avec un fond bleu marine et un texte en majuscules coloré en bleu pâle, blanc, jaune, qui se lit comme suit : Researchers in Canada vote. Les chercheur.e.s votent. Un pied de page blanc comprend le logo de CORE-COEUR Coalition for Research Excellence, Coalition pour l'excellence en recherche, une mosaïque multicolore avec un cœur partiellement orange et un cœur partiellement bleu.
March 23, 2025 at 1:13 PM
Reposted by Robin Leeuwis
zebrafishrock.bsky.social
Super helpful thread by @burgesslab.bsky.social, for those interested 🐟
April 15, 2025 at 5:03 PM
Reposted by Robin Leeuwis
zebrafishrock.bsky.social
@varshneylab.social‬ @sheng-jia.bsky.social (gRNA selection/ Phenotypic penetrance/ Neurodevelopmental disorders)
https://doi.org/10.1093/nar/gkaf180

‪@jutfelt.bsky.social Version 2 Husmorph (Image Analysis/ Landmarking) 
https://github.com/HenHus/Husmorph (32/34)
April 9, 2025 at 7:30 PM
Reposted by Robin Leeuwis
albrechts-h.bsky.social
this is VERY dangerous.
April 10, 2025 at 1:45 AM
Reposted by Robin Leeuwis
aerinj.bsky.social
Glad to see the Canadian Society for Ecology & Evolution (@csee-scee.bsky.social) speak up in support of science!

csee-scee.ca/current-bull...

This letter focuses on attacks on scientific integrity & science in the U.S.A. Similar things happened and still happen elsewhere.

Speak up. Stand up.
CSEE Current Bulletin
csee-scee.ca
April 10, 2025 at 1:35 AM
Reposted by Robin Leeuwis
bigbiology.bsky.social
⭐️Meet Wilco Verberk!⭐️

🎙️Learn more about his work in our newest episode - out now!

#science #scicomm #sciencecommunication #biology
April 1, 2025 at 10:06 PM
Reposted by Robin Leeuwis
jutfelt.bsky.social
Version 2 of our machine learning morphometric app is now out! Go try it on your organisms. github.com/HenHus/Husmo...
March 12, 2025 at 9:07 AM
leeuwisrobin.bsky.social
This was a really fun interdisciplinairy project to work on. Machine learning is such a powerful and helpful tool when working with large image datasets! Henning is also a very talented computer science student 👨‍💻👌
jutfelt.bsky.social Fredrik Jutfelt 🐠 @jutfelt.bsky.social · Feb 24
Interested in automated length and morphological measurements? Check out our new app and preprint!

🧪🐟🦑
ecoevorxiv.org/repository/v...
A zebrafish on white background and a closeup of the zebrafish eye and face
February 24, 2025 at 5:29 PM
Reposted by Robin Leeuwis
jutfelt.bsky.social
In this new preprint on ecoevorxiv we provide a detailed, practical guide to measuring CTmax and CTmin in aquatic animals.

Amazing team of authors! 🧪🐟🦑

Raby
@rachaelmorgan.bsky.social
Andreassen
@erinmcstewart.bsky.social
@jaydebon.bsky.social

ecoevorxiv.org/repository/v...
February 3, 2025 at 6:43 PM
Reposted by Robin Leeuwis
profcolinbean.bsky.social
The rise of goldfishes in North America, Fisheries, 2025;, vuae018, doi.org/10.1093/fshm...
The rise of goldfishes in North America
ABSTRACT. Goldfish Carassius auratus is a longstanding global invader that has entered a new phase in its invasion history, spreading into new geographical
doi.org
January 26, 2025 at 7:43 PM
Reposted by Robin Leeuwis
jaydebon.bsky.social
Our new paper on fish dynamics of thermal tolerance plasticity is finally out in Journal of Thermal Biology! This was an amazing collaboration with great researchers across the World!

www.sciencedirect.com/science/arti...
Dynamics of thermal tolerance plasticity across fish species and life stages
Climate warming with associated heat waves presents a concerning challenge for ectotherms such as fishes. During heatwaves, the ability to rapidly acc…
www.sciencedirect.com
January 2, 2025 at 2:32 PM
Reposted by Robin Leeuwis
jutfelt.bsky.social
New awesome video about rays! 🧪🦑🐟🦈

By @zefrank.bsky.social

youtu.be/DbaiBY8De54?...
True Facts: Rays, The Floppy Sombreros of the Sea
YouTube video by Ze Frank
youtu.be
December 28, 2024 at 10:59 PM
Reposted by Robin Leeuwis
frejamobula.bsky.social
The @iucnshark.bsky.social has published a landmark report on the global status of #chondrichthyans! This is a huge achievement and will assist the improvement of #FisheriesManagement and #conservation around the world!

Please read and share among your network: portals.iucn.org/library/node...
December 8, 2024 at 9:45 PM
Reposted by Robin Leeuwis
whysharksmatter.bsky.social
Always an interesting read 🧪🌎

www.cell.com/trends/ecolo...
A horizon scan of biological conservation issues for 2025
We discuss the outcomes of our 16th horizon scan of issues that are novel or represent a considerable step-change and have the potential to substantially affect conservation of biological diversity in the coming decade. From an initial 96 topics, our international panel of 32 scientists and practitioners prioritised 15 issues. Technological advances are prominent, including metal and non-metal organic frameworks, deriving rare earth elements from macroalgae, synthetic gene drives in plants, and low-emission cement. We include new insights into accelerated impacts of changes to Antarctic ice masses and air and water quality. We hope that anticipating and mitigating negative impacts, and making best use of new opportunities related to these issues, will contribute to better outcomes for biological diversity.
www.cell.com
December 5, 2024 at 2:01 PM