iiinova — where your digital self keeps evolving

Reposted by Rachael Morgan

Josefin Sundin @josefin-sundin.bsky.social · 08/06/2026

Fully-funded 4-year PhD-position available! The PhD-student will investigate the effects of restocking European eel. The position will be based at SLU Aqua in Stockholm, Sweden. Application deadline is July 6. Info about the PhD-position and link to apply: www.slu.se/en/about-slu...

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Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 11/05/2026

Thanks also to all the participants in the Trondheim Thermal Physiology Symposium 2026! Great presentations and discussions! 🐟🧪

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Moi Expósito-Alonso (MOILAB) @mexpositoalonso.bsky.social · 26/03/2026

Our new experimental evolution study across 30+ locations using the plant Arabidopsis thaliana —— we direct "see" adaptation and extinction to different climates at the genetic as it happens! Read it in Science dx.doi.org/10.1126/scie... @ucberkeleyofficial.bsky.social @hhmi-science.bsky.social

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Zebrafish Rock! @zebrafishrock.bsky.social · 27/03/2026

For cod’s sake, these are fintastic opportunities!

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Rachael Morgan @rachaelmorgan.bsky.social · 27/03/2026

🐟 Two PhD positions in fish physiology at the University of Bergen 🐟 www.jobbnorge.no/en/available... I'm hiring two fully-funded PhD fellows to find out how climate change affects a fish’s vision and how it responds to predators, using VR for fish, respirometry, opsin gene expression, and more!

jobbnorge.no

Two PhD Research Fellows in Fish Physiology (298755) | University of Bergen

Job title: Two PhD Research Fellows in Fish Physiology (298755), Employer: University of Bergen, Deadline: Friday, April 17, 2026

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Rachael Morgan @rachaelmorgan.bsky.social · 22/03/2026

Delighted to be part of this team! Thanks for warmly welcoming me in and I’m looking forward to working together!

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Reposted by Rachael Morgan

Peter Fabian @fabianlab.bsky.social · 15/12/2025

Apply! It’s just ONE page! Technically just abstract and brief info about 2-4 aims based on how many colleagues join your new collaborative team. 😇

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Shaun Killen @shaunkillen.bsky.social · 25/11/2025

🧵1/9 There are 35,000+ fish species, but we have formal social-behaviour classifications for a tiny fraction. Most knowledge lives in the experience of researchers, fishers, divers, aquarists, naturalists, and Indigenous communities, but almost none of it is centralised. So we built ShoalBase.org.

shoalbase.org

ShoalBase | Join, Explore, Contribute Now

ShoalBase offers a global database on fish social behaviour, supporting research, conservation, and ecology through community contributions and visual data mapping.

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Reposted by Rachael Morgan

PLOS Biology @plosbiology.org · 06/11/2025

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.

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Reposted by Rachael Morgan

Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 05/11/2025

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.

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Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 03/11/2025

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

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Methods in Ecology and Evolution @methodsinecoevol.bsky.social · 25/08/2025

📖Published📖 Raby et al. provide a comprehensive, practical guide for designing and conducting experiments to measure critical thermal limits, with an emphasis on CTmax 🌍 🧪 👇 buff.ly/iZN6Xdg

Diagram of a template design for a CTmax apparatus. Aeration, mixing mechanisms (pump), and heating elements are in an ‘equipment section’ that is physically separated with a screen from the part of the arena containing the animals (‘animal arena’; here with fish). A submerged temperature sensor (or data logger) is used to log temperatures, in addition to a temperature sensor with a display that is used to score CTmax in real time. The time and temperature should only be visible to the data recorder (and/or video camera), not to the person observing animals for end points.

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Jeremy De Bonville @jaydebon.bsky.social · 20/08/2025

Happy to see this out in @methodsinecoevol.bsky.social Are you new to CTmax tests (or CTmin)? Are you experienced, but unsure on what to report in your Methods?🤔 Then this practical guide is for you! It even includes a fillable table! 😎 besjournals.onlinelibrary.wiley.com/doi/full/10....

besjournals.onlinelibrary.wiley.com

Measuring critical thermal maximum in aquatic ectotherms: A practical guide

Critical thermal limits, commonly quantified as CTmax (maximum) or CTmin (minimum), are core metrics in the thermal biology of aquatic ectotherms. CTmax, in particular, has recently surged in popu...

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Journal of Experimental Biology @jexpbiol.bsky.social · 06/08/2025

In the Summer of 2024, @biologists.bsky.social hosted a visual ecology workshop attended by scientists across the world. In a new Commentary, these visual ecologists have come together to identify new ways of tackling the unanswered questions in this field journals.biologists.com/jeb/article/...

A screenshot of the first page of the PDF of Emerging frontiers in visual ecology, by Eleanor M. Caves, Karen L. Cheney, Marie Dacke, Tanmay Dixit, Kristina Fialko, Amanda M. Franklin, Anna-Lee Jessop, Nathan S. Hart, Natalie Hempel de Ibarra, Nathan I. Morehouse, Rachael Morgan, Baheerathan Murugavel, Todd H. Oakley, Daniel I. Speiser, Mary Caswell Stoddard, Eric J. Warrant, Sönke Johnsen and Lorian E. Schweikert. The publishing details state: © 2025. Published by The Company of Biologists | Journal of Experimental Biology (2025) 228, jeb250537. doi:10.1242/jeb.250537. The first sentence of the Abstract says, Visual ecology, the study of how animals acquire and respond to visual information in nature, has grown rapidly over the past few decades.

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Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 28/06/2025

FINclub research trip going well! 32 people, dozens of fish and invert species, 16 experiments, two dogs and lots of fun. Some photos in thread. 🧪🐟🦑

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Robin Leeuwis @leeuwisrobin.bsky.social · 29/06/2025

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 😊

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Conservation Physiology @conphysjournal.bsky.social · 19/06/2025

Little is known about the mechanisms controlling thermal acclimation in fish. Check out this study exploring possible roles of hormones & skin thermoreception during acclimation in goldsinny wrasse. 🐟 Read it here: academic.oup.com/conphys/arti...

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Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 14/05/2025

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... 🧪🐟🦑

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Dylan Beard @beardydylan.bsky.social · 24/03/2025

It was great to see so many wonderful talks and presentations at the RE Peter Biology Conference last week hosted by @ualberta.bsky.social! In particular, the keynote by @rachaelmorgan.bsky.social on how temperature and oxygen changes can impact fish was fascinating! 🐟 repeterconference.weebly.com

An image of Dr. Rachael Morgan from the University of Bergen starting her talk titled "Physiological and behavioural responses of fish to fluctuating environments".

On the left there is a roll up banner stand that says "RE Peter Biology Conference: Highlighting Undergraduate and Graduate Student Research, Edmonton, Alberta". On the right there is a board with the schedule and notices from the conference.

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Nicholas Wu @nicholaswu.bsky.social · 06/03/2025

New paper in @nature.com led by @patricepottier.bsky.social! We demonstrated global vulnerability of amphibians to warming, threatening 10% of >5,000 species examined. How did we do it? See thread🧵 Paper: www.nature.com/articles/s41...

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Jeremy De Bonville @jaydebon.bsky.social · 03/02/2025

Are you new to CTmax tests? Are you experienced, but unsure on what to report in your Methods section? Do you think there any other factors at play? 🤔 Then this practical guide is for you! 😎 Glad I could be a part of this effort which could help with studies comparisons! 🤩

ecoevorxiv.org

Measuring critical thermal maximum in aquatic ectotherms: a practical guide

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Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 03/02/2025

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...

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Josefin Sundin @josefin-sundin.bsky.social · 01/01/2025

Post-doc position available! Join us in this exciting project where we will use more than 100 years of data to investigate habitat choice and availability of the elusive European eel. The position will be based at SLU Aqua in Stockholm. Apply before January 7. Please repost!

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Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 22/12/2023

Happy to announce two PhD positions in fish ecophysiology 📣 Fully funded, fun fish temperature physiology, supervision by me, @shaunkillen, @NPilakouta! @Naturvetenskap Please spread the word 🙏 web103.reachmee.com/ext/I005/103...

web103.reachmee.com

Doctoral students in biology with focus on ecophysiology of fish

Doctoral positions in biology with focus on ecophysiology of fish At the Department of Biological and

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