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Mathilde Chevallay

@mathildechevallay.bsky.social
1.3K followers 661 following 30 posts

Marine biologist turned into science communicator 🌊 I bring ocean science to life through talks, workshops & photos 🐧📸 Passionate about making research accessible to all! Based in Niort, FR — working locally & online 🌍 linktr.ee/mathilde.chevallay

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Reposted by Mathilde Chevallay
Benjamin Dupuis @bendps.org · 29/01/2026
!📃New paper📃! My 2nd PhD paper is out in @animalecology.bsky.social ky.social ! Using a unique 25-year #biologging and population monitoring🐧 dataset , we uncover how environmental changes 🧊 scale up from individual to population responses. besjournals.onlinelibrary.wiley.com/doi/10.1111/... #move
besjournals.onlinelibrary.wiley.com
Energetics link long‐term environmental variations to breeding success in a wild penguin population
Using a unique 25-year dataset, we uncover how environmental changes scale up from individual to population responses. We show that sea ice drives individual energetics, while parental foraging effor...
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Mathilde Chevallay @mathildechevallay.bsky.social · 23/07/2025
Exciting news! 🎉 I’m launching my new journey as an independent science communicator 🌊 From marine biology to public talks, school workshops & ocean storytelling — let’s make science accessible, fun & meaningful ! 📍 Based in Niort 🇫🇷 working locally & online! linktr.ee/mathilde.che...
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Mathilde Chevallay @mathildechevallay.bsky.social · 16/04/2025
My PhD thesis is finally available online! 🎓 Check it out if you want to learn more about the fascinating hunting tactics of the diving predators of the Southern Ocean 🐧🦭 theses.hal.science/tel-04985134
theses.hal.science
Hunting in the deep : unravelling the mysteries of Southern Ocean predator-prey interactions using innovative biologging technologies
Fine-scale interactions between predators and their prey, i.e. how predators find, select, and capture their prey, and alternatively how prey detect predators, and react to imminent predation, are key...
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Mathilde Chevallay @mathildechevallay.bsky.social · 03/04/2025
Last week, I had the pleasure of returning to my old high school to talk about my journey and research. 🐧For nearly two hours, we explored marine biology, ocean science, and career paths in research. 👩‍🔬Huge thanks to the students & teachers at Lycée Anna de Noailles for the great discussions! 🙌
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Mathilde Chevallay @mathildechevallay.bsky.social · 03/03/2025
🌿✨ World Wildlife Day ✨🌿 Today, we celebrate the beauty of wildlife. As a biologist and photographer, I capture these moments to raise awareness of their fragility and the need for protection. Every species matters! 📸 Follow me on my Instagram account: @mathildechevallay #WorldWildlifeDay
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Mathilde Chevallay @mathildechevallay.bsky.social · 11/02/2025
📢 Today marks the 10th anniversary of the International Day of Women and Girls in Science 👧! 💡Encouraging women in science means enriching research, breaking stereotypes, and ensuring a fairer, more inclusive science ⚖️ @unesco.org #EveryVoiceInScience #WomenInScience
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Mathilde Chevallay @mathildechevallay.bsky.social · 23/01/2025
This week, I had the pleasure of talking with the students from Ecole du Nord for their "Maritime Challenges" project, raising awareness about ocean richness and threats. We discussed about the top predators of Kerguelen Islands and their incredible survival strategies in the Southern Ocean 🌊🐧
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Mathilde Chevallay @mathildechevallay.bsky.social · 15/01/2025
In December, I had the pleasure to share my journey as a woman in science with bright, curious high school students as part of the "Têtes Chercheuses" event 👐. We had inspiring discussions about breaking stereotypes, overcoming challenges, and shaping the future through science! 🔬💡
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Mathilde Chevallay @mathildechevallay.bsky.social · 13/01/2025
I was honored to receive the Beauvoir-sur-Niort city medal 🎖️during the New Year ceremony, recognizing my research work and my commitment to science education 🎓. Thanks to the mayor for this opportunity to talk about the importance of protecting biodiversity with residents! 🌊
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Reposted by Mathilde Chevallay
Journal of Experimental Biology @jexpbiol.bsky.social · 16/12/2024
Issue 23 has closed & issue 24 is open journals.biologists.com/jeb/issue/22... The front cover, by Benjamin Dupuis, French Polar Institute, shows an Adélie penguin leaping from the water to return to its colony. @bendps.bsky.social & co report how depth tracking can estimate penguin energy use
Journal cover for issue 23, volume 227 of Journal of Experimental Biology. The cover includes an image of an Adélie penguin leaping from the water onto ice to return to its colony. The image is by Benjamin Dupuis @bendps.bsky.social – French Polar Institute
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Reposted by Mathilde Chevallay
Benjamin Dupuis @bendps.org · 05/12/2024
My first PhD chapter just got published in @jexpbiol.bsky.social ! We proposed a new framework to estimate foraging energetics ⚡ of Adélie 🐧 using TDRs. Our framework provided results similar to accelerometers and could likely be applicable on other diving predators 🐋🦈 doi.org/10.1242/jeb....
Graphical abstract of the paper describing the main findings
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Mathilde Chevallay @mathildechevallay.bsky.social · 02/12/2024
To celebrate the end of my thesis on Southern Ocean predators 🦭, I’m selling limited-edition fine art prints from my expeditions 🌊🖼️. Printed on Hahnemühle Rag high quality paper, signed & numbered (only 20 per photo). DM me for details & bring the wild home! 🐧📷
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Mathilde Chevallay @mathildechevallay.bsky.social · 25/10/2024
Last week, I was delighted to defend my doctoral thesis on Southern ocean predator-prey interactions at the @CEBC_ChizeLab ! 🦭🐧 A big thanks to the whole lab for this amazing experience, and especially to my two wonderful supervisors!
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Mathilde Chevallay @mathildechevallay.bsky.social · 14/10/2024
Last week, I was honored to be named a Young Talent France #ForWomenInScience 2024 by @FondationLOreal & @UNESCO. This recognition will help accelerate my research on marine predators' ecology. I am deeply grateful for this support to advance #WomenInScience. #FWIS2024
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Mathilde Chevallay @mathildechevallay.bsky.social · 08/10/2024
I'm delighted to announce that I've been named one of the #FWIS2024 @FondationLOreal-@UNESCO French Young Talents! An award I share with 34 other young researchers, and which highlights the importance of the contributions of #WomenInScience. @CEBC_chizeLab @CNRS @UnivLaRochelle
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Mathilde Chevallay @mathildechevallay.bsky.social · 09/08/2024
PhD thesis submitted after 3 years of work! 📚 @CEBC_ChizeLab @MarineMegafaun1
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Mathilde Chevallay @mathildechevallay.bsky.social · 25/04/2024
Happy #WorldPenguinDay ! A funny memory from the Kerguelen Islands where deployed tags on king penguins for my final PhD chapter. Results coming soon! 🐧🐟
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Mathilde Chevallay @mathildechevallay.bsky.social · 06/03/2024
Today I was very happy to present my PhD work about the fine scale hunting tactics of diving predators 🦭 of the Southern ocean at the @bls8tokyo2024 🇯🇵 ! Many thanks to all the people that listened to my talk! @MarineMegafaun1 @CEBC_ChizeLab
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Mathilde Chevallay @mathildechevallay.bsky.social · 20/02/2024
New paper out! We deployed sound and movement tags on Antarctic fur seals 🦭in Kerguelen Islands and recorded for the first time underwater vocalizations during foraging in this species 🎙️! @CEBC_ChizeLab @MarineMegafaun1 @marinemammalogy
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Mathilde Chevallay @mathildechevallay.bsky.social · 10/01/2024
New paper out in @WileyEcolEvol ! I was very happy to be involved in this study about fine-scale predator-prey interactions in Weddell seals 🦭 using sonar tags for the first time on this species! 📷 Karine Heerah
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Mathilde Chevallay @mathildechevallay.bsky.social · 02/01/2024
Another chapter of my PhD got published! In this study, we deployed new biologging devices on elephant seals 🦭 to describe fine-scale distribution and characteristics of their prey 🐟 in different oceanographic conditions. @CEBC_ChizeLab @MarineMegafaun1
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Mathilde Chevallay @mathildechevallay.bsky.social · 02/01/2024
Back from a great field season in the French Southern and Antarctic Lands! I spent one month on the small Amsterdam island to deploy GLS tags on subantarctic fur seals to learn more about their foraging ecology!
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Mathilde Chevallay @mathildechevallay.bsky.social · 17/10/2023
My first PhD chapter has just been published in @PNASNews! We show that elephant seals 🦭are able to detect their prey at a long distance enabling them to set up stealth approach tactics and to find enough prey in the vast Southern Ocean 🐟 @CEBC_ChizeLab @MarineMegafaun1
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Mathilde Chevallay @mathildechevallay.bsky.social · 13/10/2023
Dans le cadre de la Fête de la Science, les élèves des Deux Sèvres ont pu découvrir comment utiliser des balises pour mesurer les exploits sportifs des animaux! #FDS2023 @CEBC_ChizeLab
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Mathilde Chevallay @mathildechevallay.bsky.social · 25/09/2023
Présentation de mon deuxième chapitre de thèse au Colloque des Doctorants de Deuxième Année de @UnivLaRochelle 🦭
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Mathilde Chevallay @mathildechevallay.bsky.social · 18/05/2023
Remake de Ma Thèse en 180 s pour le Week End de la Conservation au Zoodyssée ! @CEBC_ChizeLab
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Mathilde Chevallay @mathildechevallay.bsky.social · 04/05/2023
Présentation de mon deuxième chapitre de thèse sur la distribution des proies des éléphants de mer autour des Kerguelen 🦭 Merci au @CNFRA_France pour l'organisation de ces journées scientifiques ! #JS19CNFRAA @AcademieClimat
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Mathilde Chevallay @mathildechevallay.bsky.social · 01/08/2022
First day at @marinemammalogy conference! I will be presenting my MSc work on the ability of elephant seals 🦭 to detect their prey and decide on capture tactics before prey reacts. Check out my pre-recorded talk in the Virtual-Behavior session! #SMM2022
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Mathilde Chevallay @mathildechevallay.bsky.social · 08/07/2022
Very glad to present my first PhD chapter at the #SEB2022 about predator-prey interactions in Southern elephant seals! #SEBiology
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