Jenni Prokkola's Avatar

Jenni Prokkola

@jmprok

Salmon scientist and an angry optimist. Evolution & Physiology ๐ŸŸ๐ŸŒก๏ธ๐Ÿงฌ Senior scientist & Research Fellow @luke.fi. Lohitutkija. She/her.

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05.10.2023
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Latest posts by Jenni Prokkola @jmprok

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08.03.2026 09:42 ๐Ÿ‘ 118 ๐Ÿ” 26 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
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(cartoon from 2003)

open.substack.com/pub/margaret...

03.03.2026 16:27 ๐Ÿ‘ 551 ๐Ÿ” 147 ๐Ÿ’ฌ 5 ๐Ÿ“Œ 6
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Two fantastic postdoc offers in ecohydraulics and stream fish ecology available at INRS in Quรฉbec city!

Please apply as soon as possible and no later than March 31st 2026.

20.02.2026 19:55 ๐Ÿ‘ 2 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
RV SVEA a large blue and white research vessel passes between two rocky headlands heading out to sea

RV SVEA a large blue and white research vessel passes between two rocky headlands heading out to sea

Jobs thread - Lots of aquatic research related jobs open here at SLU Aqua Sweden right now (with a few bonus aquatic jobs in other departments). Around half are English language roles. Come and work with us๐Ÿ™‚ 1/n

20.02.2026 10:16 ๐Ÿ‘ 14 ๐Ÿ” 17 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Restored Peatlands Could Become Carbon Sinks Within Decades - Eos Thatโ€™s much faster than what most scientists thought.

"Drained peatlands in Finland can become carbon sinks within just 15 years of restoration, suggests a study published in Restoration Ecology."

Restored peatlands can become habitats right away and stop harmful discharge to the rivers and lakes.

#RestoreNature

eos.org/articles/res...

17.02.2026 18:13 ๐Ÿ‘ 82 ๐Ÿ” 38 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 2

Canโ€™t believe we are still doing this

15.02.2026 14:03 ๐Ÿ‘ 6126 ๐Ÿ” 1279 ๐Ÿ’ฌ 60 ๐Ÿ“Œ 24
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Development of abundance and distribution of the invasive pink salmon in the large River Teno/Tana catchment in northern Finland and Norway.
onlinelibrary.wiley.com/share/ZYHXEZ...

13.02.2026 02:33 ๐Ÿ‘ 7 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Photo by Panu Orell. A juvenile salmon in a river, on top of a red and black rock. There is algae around the rock in the river bottom but the water is very clear. Sunlight is reflected on the fish scales, and showing the red and black dots, and brown, tall stripes on the side of the fish.

Photo by Panu Orell. A juvenile salmon in a river, on top of a red and black rock. There is algae around the rock in the river bottom but the water is very clear. Sunlight is reflected on the fish scales, and showing the red and black dots, and brown, tall stripes on the side of the fish.

๐ŸŸ๐ŸŒก๏ธ๐Ÿงช New study from #ThermoEvo project
@luke.fi: Juvenile Atlantic salmon show no increase in aerobic scope during an ecologically realistic #heatwave.
This suggests limited capacity to cope with higher oxygen demand in warming rivers, when O2 costs increase.
onlinelibrary.wiley.com/doi/10.1111/...

11.02.2026 13:44 ๐Ÿ‘ 3 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Photo by Panu Orell. A juvenile salmon in a river, on top of a red and black rock. There is algae around the rock in the river bottom but the water is very clear. Sunlight is reflected on the fish scales, and showing the red and black dots, and brown, tall stripes on the side of the fish.

Photo by Panu Orell. A juvenile salmon in a river, on top of a red and black rock. There is algae around the rock in the river bottom but the water is very clear. Sunlight is reflected on the fish scales, and showing the red and black dots, and brown, tall stripes on the side of the fish.

๐ŸŸ๐ŸŒก๏ธ๐Ÿงช New study from #ThermoEvo project
@luke.fi: Juvenile Atlantic salmon show no increase in aerobic scope during an ecologically realistic #heatwave.
This suggests limited capacity to cope with higher oxygen demand in warming rivers, when O2 costs increase.
onlinelibrary.wiley.com/doi/10.1111/...

11.02.2026 13:44 ๐Ÿ‘ 3 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The โ€land of the freeโ€ is building literal concentration camps. I donโ€™t think the world should just watch it happen in real time ๐Ÿ™„

10.02.2026 06:07 ๐Ÿ‘ 4 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Irish man with valid US work permit held in ICE detention for five months Seamus Culleton, who has lived in US for two decades, faces deportation after being arrested on way home from work

"Irish man with valid US work permit held in ICE detention for five months" www.theguardian.com/us-news/2026...

09.02.2026 18:18 ๐Ÿ‘ 11 ๐Ÿ” 7 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

NBC is editing out footage of JD Vance being booed at the Olympics.

CBS is state sponsored propaganda.

Bezos fired over 300 journalists from The Washington Post and left many stranded in foreign countries.

Theyโ€™re crowd funding to get home.

Support independent journalism.

08.02.2026 04:58 ๐Ÿ‘ 251 ๐Ÿ” 102 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 2

Thanks for writing that, and it would be great if biologists had more conversations about this. Also we tend to present work e.g. in conferences after the experiment is done, but could be even more useful to do this before itโ€™s done. Registered reports would also help, if we just used them:)

07.02.2026 11:29 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Principles of experimental design for ecology and evolution Here I argue that we do not discuss experimental design, often until it is too late. This editorial seeks to begin a conversation about how and where to replicate appropriately.

The principles of experimental design in ecology and evolution has 20k downloads, but unfortunately I still have to reject ~20% of papers without review because they lack replication at the right level. More discussion among mentors and mentees please.
onlinelibrary.wiley.com/doi/full/10....

07.02.2026 04:57 ๐Ÿ‘ 35 ๐Ÿ” 14 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Hieno artikkeli vitamiinipuutoksesta, joka on aiheuttanut massakuolemia lohenpoikasilla myรถs Itรคmerellรค -90-luvulla. Silloin syyksi arvioitiin kilohailin suhteellisen isoa mรครคrรครค silakkaan nรคhden, ja on mielenkiintoista ettรค silakkaa ehdotetaan โ€vitamiinipilleriksiโ€ myรถs Tyynen valtameren lajeille.

07.02.2026 07:09 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Symposium on restoration

Save the date
๐Ÿ“ Oulu, Finland
๐Ÿ“… 30 June โ€“ 2 July
โœ restofish@luke.fi

Find all the details including submission guidelines on the website: lyyti.events/p/Symposium_...

@luke.fi | @oulu.fi
@jmprok.bsky.social

05.02.2026 11:29 ๐Ÿ‘ 0 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Abstracts still open for Symposium on Habitat Restoration for Diadromous Fishes ๐Ÿ“ฃ

If youโ€™re working on:
๐Ÿ”ต Climate-smart habitat restoration
๐ŸŸข Tools & best practices for design and monitoring
๐ŸŸก Social aspects of restoration
๐ŸŸ  Lessons from real-world projects

Submit by 15 Feb! โฐ

๐Ÿ‘‰ shorturl.at/z4e5u

05.02.2026 11:29 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1

Going down a rabbit hole of TX special elections on a Sunday morning was not what I expected, but itโ€™s great news! Hope the wave continues in Novemberโ€ฆ

01.02.2026 07:03 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Good times to be had in Finland this summer, submit an abstract now ๐Ÿ‘‡
#restoration #science ๐Ÿงช

31.01.2026 05:27 ๐Ÿ‘ 10 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Uppsala in late autumn

Uppsala in late autumn

Join us at the Evolutionary Biology Centre at Uppsala University. Weโ€™re searching for an Assistant Professor in Biology. www.uu.se/en/about-uu/...

28.01.2026 20:28 ๐Ÿ‘ 158 ๐Ÿ” 186 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 5
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โ€˜This is what fascism looks likeโ€™: terror in Minneapolis reminiscent of civil war Alex Prettiโ€™s death could be a moment of reckoning for Democrats to call time on Trump waging war on his people

โ€œItโ€™s like Call of Duty.โ€

But it's not. It's Minneapolis, and these are real human beings. www.theguardian.com/us-news/2026...

25.01.2026 13:19 ๐Ÿ‘ 32 ๐Ÿ” 16 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Latest ChatGPT model uses Elon Muskโ€™s Grokipedia as source, tests reveal Guardian found OpenAIโ€™s platform cited Grokipedia on topics including Iran and Holocaust deniers

With #Gemini hallucinating #GoogleSearch, #Grok hallucinating in its own encyclopedia, and #ChatGPT increasingly drawing on that exact #Grokipedia, we are continuously enshittifying the information space. This has already become a huge mess that will be increasingly difficult to clean up.

24.01.2026 15:45 ๐Ÿ‘ 48 ๐Ÿ” 18 ๐Ÿ’ฌ 8 ๐Ÿ“Œ 2
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Oxygen-free metabolism in the bird inner retina supported by the pecten - Nature While the photoreceptor outer segments in the bird outer retina have access to oxygen, the inner retina operates under chronic anoxia, supported by anaerobic glycolysis in the retinal neurons.

Link to their article:

www.nature.com/articles/s41...

21.01.2026 18:09 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Illuminating how the bird inner retina works without oxygen solves a 350-year-old structural mystery | Nature Neurons in the bird eyeโ€™s inner retina lack a blood supply. Finding how these neurons function without oxygen reveals a role for an enigmatic eye structure. Neurons in the bird eyeโ€™s inner retina lack a blood supply. Finding how these neurons function without oxygen reveals a role for an enigmatic eye structure.

Have you ever wondered whatโ€™s going on in birdsโ€™ eyes? Theyโ€™re bizzarre! ๐Ÿงช๐Ÿฆ๐Ÿ‘€

Damsgaard et al. describe the role of a structure, which function was not properly understood until now, in @nature.com. Amazing work.

In this N&V, Michael Berenbrink and I highlight the study (gift link): rdcu.be/eZ6EC

21.01.2026 18:07 ๐Ÿ‘ 4 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Laajempaa taustatietoa silakan ja lohien yhteyksistรค @suomenluonto.bsky.social jutussa:

21.01.2026 10:19 ๐Ÿ‘ 4 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Joo, tosiaan! Toivotaan ettรค massiaisia riittรครค jatkossakin๐Ÿ˜Š

20.01.2026 19:47 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Meriselviytymisen parantuminen voisi selittรครค kossien mรครคrรครค, ja siihen taas voisi vaikuttaa se ettรค vaelluspoikasille olisi ollut paremmin ravintoa. Silakoiden kunto on samaan aikaan kohentunut, ja niillรค on samoja ravintokohteita.

20.01.2026 17:08 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

A plea from an editor:

postdocs & grad students who want to review manuscripts, please (!) have an online presence with your current email. I try to solicit reviews from ECRs, but we all move a lot, and it's hard to know if we'll be able to reach you at the email address on your last paper ๐Ÿงช๐ŸŒ

20.01.2026 13:51 ๐Ÿ‘ 45 ๐Ÿ” 25 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 9
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Luke: Itรคmeren lohitilanteessa elpymisen merkkejรค Uutiset nopeasti ja luotettavasti.

Uusi tiedotteemme: Itรคmeren lohitilanteessa elpymisen merkkejรค

Onhan se kiva pitkรคstรค aikaa kertoa hyviรคkin uutisia โ˜บ๏ธ

@luke.fi

20.01.2026 11:28 ๐Ÿ‘ 13 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 2