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Theo Bakker

@tcmbakker.bsky.social

I am Co-Editor-in-Chief for Behavioral Ecology and Sociobiology and retired professor of Animal Ecology, University of Bonn

72 Followers  |  83 Following  |  4 Posts  |  Joined: 11.03.2025  |  1.9574

Latest posts by tcmbakker.bsky.social on Bluesky

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We are hiring - PDRA position exploring how information access shapes social dynamics in killer whales. Collaboration with @samellisq.bsky.social @drwhale.bsky.social Prof Dan Franks (York) start 1st Nov (or ASAP) end 31st Oct 2028. Apps close on 19th Oct.

www.jobs.ac.uk/job/DOT336/p...

23.09.2025 18:29 β€” πŸ‘ 30    πŸ” 44    πŸ’¬ 1    πŸ“Œ 5
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio

Awesome faculty position alert! Tenure-track assistant professor position in Evolutionary Biology, with a focus on organismal responses to environmental change.

Please help spread the word!
apply.interfolio.com/173889

12.09.2025 21:50 β€” πŸ‘ 27    πŸ” 33    πŸ’¬ 1    πŸ“Œ 1
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πŸ”΄ PFAS ('forever chemicals') found in wild fish across multiple EU countries!

New EEB report shows that:

πŸ§ͺ Most samples exceed proposed safety limits
⚠️ Some exceed by 10,000x
πŸ•°οΈ Member States want to delay action until 2051

Link in comments ⬇️

#PFAS #Environment #PublicHealth #ForeverChemicals

09.09.2025 06:15 β€” πŸ‘ 60    πŸ” 38    πŸ’¬ 1    πŸ“Œ 3
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Evolutionary age correlates with range size across plants and animals - Nature Communications Why are some species widespread while others are found only in small, isolated areas? This study shows that species with narrow ranges, and thus higher extinction risk, are often island-restricted, poor dispersers, and have evolved relatively recently.

Why are some species widespread while others are found only in small, isolated areas? A study in Nature Communications shows that species with narrow ranges, and thus higher extinction risk, are often island-restricted, poor dispersers, and have evolved relatively recently. #evosky πŸ§ͺ

08.09.2025 22:43 β€” πŸ‘ 53    πŸ” 22    πŸ’¬ 0    πŸ“Œ 0
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Why would anyone want to be a scientist?

"Doing good science requires the utmost exertion of body, mind and spirit, yet is consistently filled with failure and rejection."

journals.biologists.com/jcs/article/...

07.09.2025 12:06 β€” πŸ‘ 93    πŸ” 37    πŸ’¬ 7    πŸ“Œ 2

πŸ§ͺ ETHOLOGY: Biases in animal behaviour research are inevitableβ€”but can be identified & mitigated πŸ‘€πŸ’
Winder et al. propose a β€œknowns & unknowns” framework to help researchers reflect on overlooked assumptions & strengthen science. It's #OpenAccess: πŸ”— doi.org/10.1111/eth....

09.09.2025 11:19 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Join us tomorrow for the first FINE of the Fall 2025:

2nd September, Andrew Bass, Cornell University (USA)

Title: Crystal Clear Brains: Benefits & Tradeoffs of Miniaturization in Danionella Fishes

When: 2nd September, presentation starts at 11:00 NYC / 17:00 Paris.

01.09.2025 07:04 β€” πŸ‘ 2    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Sexually attractive males produce relatively more sons in a fish with external fertilisation According to the mate attractiveness hypothesis of biased progeny sex-ratio, sexually attractive males should produce relatively more sons. We tested this hypothesis with three-spined sticklebacks Gas...

New preprint: Bakker, T. C. M., MΓΌller, B., Mehlis-Rick, M. "Sexually attractive males produce relatively more sons in a fish with external fertilisation": see www.researchsquare.com/article/rs-7...

22.08.2025 09:59 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Adaptive variation in opsin expression of sticklebacks from different photic habitats - Hydrobiologia We studied phenotypic and genetic adaptation of the visual system of three-spined sticklebacks, Gasterosteus aculeatus, from North Uist, Scotland. We quantified differences in opsin gene expression of...

Our paper Bakker TCM, Hiermes M, Müller B, Martin S, Rennison DJ, Rick IP: "Adaptive variation in opsin expression of sticklebacks from different photic habitats" has now been printed: see link.springer.com/article/10.1...

22.08.2025 09:55 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Bamfield Stickleback 2025

On my way home from the 11th triennial Stickleback conference, which was at Bamfield Marine Sciences Centre on Vancouver Island. Had a great time, with lots of fascinating science talks and great conversations with colleagues. Some photos:
adobe.ly/4fieJBD

02.08.2025 06:09 β€” πŸ‘ 10    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Groen en betaalbaar treinreizen πŸš„ Oproep: maak duurzaam treinreizen betaalbaar Treinreizen in Nederland en Europa moet betaalbaar, toegankelijk en klimaatvriendelijk zijn. Op dit moment worden treintickets elk jaar duurder, terwijl vl...

Doe eventjes wat nodig is, teken 'm die oproep: doemee.greenpeace.nl/actie/groen-...

25.07.2025 12:29 β€” πŸ‘ 9    πŸ” 5    πŸ’¬ 0    πŸ“Œ 1
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Postdoctoral researcher: avian microbiomes and reproduction We are looking for a postdoctoral researcher to join our team working on avian reproductive microbiomes at the Netherlands Institute of Ecology (NIOO-KNAW) in the group of Dr. Melissah Rowe. The postd...

We are looking for a postdoc to join our group to work on an ERC funded project on avian reproductive microbiomes. nioo.knaw.nl/en/vacancies...
Please RT! #microbes #microbiomes #sparrows #postdoc

24.07.2025 12:39 β€” πŸ‘ 23    πŸ” 42    πŸ’¬ 0    πŸ“Œ 1
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The Local Organizing Commitee welcomes behavioral ecologists from across the world and of all career stages to enjoy a five-day meeting rich in top-notch science and ample networking opportunities in Turin (Italy), 20-24 July 2026.

28.06.2025 21:24 β€” πŸ‘ 96    πŸ” 44    πŸ’¬ 1    πŸ“Œ 7
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New cover image for Behavioral Ecology and Sociobiology
Writer: tbakker1
tbakker1
49 minutes ago
1 min read

Starting with the May issue, BES has a new cover image.

See Szala K, Tobolka M, Surmacki A (2025) Behav Ecol Sociobiol 79:66.

link.springer.com/article/10.1...

20.06.2025 15:15 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 1
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Beautiful addiction: art meets taxidermy in new Amsterdam museum - DutchNews.nl Before Ferry van Tongeren saw the insides of wild animals, he thought nature was beautiful. Then this former ad man retrained as a taxidermist, hooked up with artistic partner Jaap Sinke, took…

In a converted canal building in Amsterdam, they are showing off a collection of truly original and decidedly macabre preserved animal artworks in the new Art Zoo Museum. www.dutchnews.nl/2025/06/beau...

22.06.2025 10:01 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Highway to heaven: Happy 750th birthday, Amsterdam!

Highway to heaven: Happy 750th birthday, Amsterdam! www.dutchnews.nl?p=253574

22.06.2025 10:13 β€” πŸ‘ 6    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
AI in Scientific Writing

AI in Scientific Writing

Researchers in ANZ: Explore how Generative AI is transforming academic writing & publishing! Join our webinar to learn about AI tools, ethics, editorial policies & strategies to protect research integrity. bit.ly/4jRq24i #Webinar #AcademicSky

21.06.2025 17:30 β€” πŸ‘ 5    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0
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New cover image for Behavioral Ecology and Sociobiology
Writer: tbakker1
tbakker1
49 minutes ago
1 min read

Starting with the May issue, BES has a new cover image.

See Szala K, Tobolka M, Surmacki A (2025) Behav Ecol Sociobiol 79:66.

link.springer.com/article/10.1...

20.06.2025 15:15 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 0    πŸ“Œ 1
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Male mice can grow female organs β€” if their mothers lack iron Nature - Hear the biggest stories from the world of science | 04 June 2025

Latest from the Nature Podcast πŸ”Š Male mice can grow female organs β€” if their mothers lack iron

https://go.nature.com/3SY8I2V

08.06.2025 09:03 β€” πŸ‘ 44    πŸ” 10    πŸ’¬ 0    πŸ“Œ 1
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πŸŒ§οΈπŸ“± rain calls πŸ“±πŸŒ§οΈ

Cool study in @behavecol.bsky.social from Framond et al. (Brumm lab, @mpiforbi.bsky.social) of a poorly understood chaffinch call type

Based on playbacks + field studies they conclude these are female-directed alarm calls

academic.oup.com/beheco/artic...

#prattle πŸ’¬
#bioacoustics

06.06.2025 22:01 β€” πŸ‘ 19    πŸ” 11    πŸ’¬ 0    πŸ“Œ 1
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All eggs welcome - From so simple a beginning Males of the Japanese giant water bug take care of eggs - even of eggs that have been fertilized by other males.

Male Japanese giant water bugs exhibit exceptional paternal care.

blog.willyvanstrien.nl/2025/05/27/a...

27.05.2025 14:03 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

ObszΓΆn: Reichste Prozent der WeltbevΓΆlkerung besitzt nicht nur 45 % des weltweiten VermΓΆgens, sondern trug im Vergleich zum Durchschnitt 26-mal mehr zu Jahrhundert-Hitzewellen bei. Wer die #Klimakrise befeuert, sollte auch fΓΌr die Folgen aufkommen. #VermΓΆgenssteuer jetzt! #TaxTheRich

12.05.2025 06:56 β€” πŸ‘ 195    πŸ” 69    πŸ’¬ 1    πŸ“Œ 2
Postdoc - Birds on Islands Naturalis is looking for a postdoc studying birds on islands.

Work!
www.naturalis.nl/en/about-us/...

10.05.2025 07:56 β€” πŸ‘ 4    πŸ” 10    πŸ’¬ 0    πŸ“Œ 0
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β€œAlchemy” In Action As CERN Detects Lead Atoms Turning Into Gold You don’t need a philosopher's stone, just a really good particle accelerator.

β€œAlchemy” In Action As CERN Detects Lead Atoms Turning Into Gold

09.05.2025 05:00 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Tuesday, May 6th 2025, 11 AM NYC / 5 PM Paris
Eli Strauss, Max Planck Institute of Animal Behavior, Germany

Title: Exploring nepotistic societies with spotted hyenas

Live on zoom for subscribers.
YouTube channel. www.youtube.com/channel/UClX...

06.05.2025 06:10 β€” πŸ‘ 8    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
Natural History Museum Denmark

Natural History Museum Denmark

We are hiring. The Natural History Museum Denmark seeks a Tenure-track Assistant Professor and Curator in Vertebrate Paleontology.

Duties are collection-based research, curation of collections, teaching and public engagement.

Deadline: 18 May 2025. View full job posting: bit.ly/3XPIQcg

02.05.2025 06:54 β€” πŸ‘ 36    πŸ” 35    πŸ’¬ 0    πŸ“Œ 2

What an incredible talk πŸ‘

24.04.2025 15:01 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
15th April 2025, Mike Webster: Sexual signals & divergence in Australian fairywrens
YouTube video by Seminar on Frontiers in Social Evolution 15th April 2025, Mike Webster: Sexual signals & divergence in Australian fairywrens

Watch here last weeks FINE by Mike Webster about

Sexual signals & divergence in Australian fairywrens: From genes to behavior to speciation

www.youtube.com/watch?v=KNMD...

22.04.2025 11:19 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Seminar Series 2025: 1. Dr. Damien Farine
YouTube video by Animal Behaviour Live Seminar Series 2025: 1. Dr. Damien Farine

πŸ“£ SEMINAR SERIES 2025 – 1 week to go!πŸ“£

Join us Tuesday 29 April at 2pm GMT for the first seminar of 2025!
🐦 Dr. Damien Farine (ANU) on The Costs of Collective Behaviour
πŸ“ Live on YouTube β†’ www.youtube.com/watch?v=wc9z...
βœ… Free & open to all!
#AnimalBehaviour #OnlineSeminar #CollectiveBehaviour

22.04.2025 07:24 β€” πŸ‘ 13    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0
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THE URBAN NATURALIST is on sale! Enjoy 25% to 50% off your order! Just visit Tertulia and enter code URBAN.

tertulia.com/book/the-urb...

#urbannature #urbanecology #naturalhistory #nerdystuff #citizenscience #GiftsForGeeks #citynature #biology #animals #floraandfauna #fungi

20.04.2025 07:58 β€” πŸ‘ 5    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

@tcmbakker is following 20 prominent accounts