Daniela Rößler

Daniela Rößler

@roesslerdaniela.bsky.social

Behavioral & Evol Ecologists | Emmy Noether Group Leader Uni Bonn | @sleeblab.bsky.social | Spider Sleep🕷️💤 | Pred-Prey Interactions | Sens Ecol | LGBTQ+ 🌈 | firstgen | she/her | https://danielaroessler.weebly.com Prev: Harvard, Uni Konstanz & MPI-AB

1.8K followers1.5K following108 posts

Daniela Rößler reposted

Gwen Pearson
@bug-gwen.bsky.social

In addition to being very cute, "Comparing sleep across such different animals can help us understand how sleep evolved, which features are ancient, and what functions different sleep stages may serve." 💤🕷️ 🧪

Perry Beasley-Hall, PhD@pbeasleyhall.bsky.social

A new study has found a species of #jumpingspider experiences at least two sleep stages, including one resembling REM. 🥹🕷️ #entomology #arachnology www.abc.net.au/news/science...

abc.net.auJumping spiders caught on camera sleeping and leg twitching like humansThe most comprehensive study of its kind confirms that jumping spiders go through two phases of sleep, including a REM-like state that is associated with human dreaming.

Daniela Rößler reposted

Perry Beasley-Hall, PhD
@pbeasleyhall.bsky.social

A new study has found a species of #jumpingspider experiences at least two sleep stages, including one resembling REM. 🥹🕷️ #entomology #arachnology www.abc.net.au/news/science...

abc.net.auJumping spiders caught on camera sleeping and leg twitching like humansThe most comprehensive study of its kind confirms that jumping spiders go through two phases of sleep, including a REM-like state that is associated with human dreaming.

Daniela Rößler reposted

c0nc0rdance
@c0nc0rdance.bsky.social

Great thread on spider snoozles.

Nadja Geiger@nadjageiger.bsky.social

🕷️💤 New paper in time for 🎃! Do #spiders really sleep? In our new study on #Portia fimbriata we tested all behavioural criteria of #sleep and found evidence for regulated, two-stage sleep with recurring REM-like stages. Out in @pnas.org! @roesslerdaniela.bsky.social 📄 tinyurl.com/3fky8ze7 🧵1/9

Daniela Rößler reposted

La Chelle Dame Sans Merci
@chelleraiser.bsky.social

I feel like @aptshadow.bsky.social might appreciate this one: scientists have discovered that Portia jumping spiders experience REM-like sleep, and even make up for it when they're deprived. THE SPIDERS ACCRUE SLEEP DEBT. 🕷️ www.sciencealert.com/spiders-can-...

sciencealert.comSpiders Can Rack Up REM-Like Sleep Debt (And May Even Dream), Just Like HumansTucked in a corner of an enclosure, swaddled in darkness, a tiny spider sleeps.
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Daniela Rößler
@roesslerdaniela.bsky.social

Why this matters: A. diadematus is a common, accessible, #nonmodel species. If a backyard orb‑weaver shows clear sleep‑like arousal patterns in the wild, we suddenly have a powerful system for studying how sleep evolved, outside the lab, in real ecological contexts. 🧵4/5

Daniela Rößler
@roesslerdaniela.bsky.social

Next time you see a garden spider hanging a bit droopy in its web, it might be asleep. #staycurious @asab.org @unibonn.bsky.social @mpi-animalbehav.bsky.social Read "Increased response latency in Araneus diadematus (Araneidae) during putative sleep in the wild" here: tinyurl.com/uznvv58y 🧵5/5

tinyurl.comIncreased response latency in Araneus diadematus (Araneidae) during putative sleep in the wildSleep is a seemingly universal behaviour across the animal kingdom, yet for the majority of species, experimental evidence of sleep is still lacking. …
Daniela Rößler
@roesslerdaniela.bsky.social

We tested wild Araneus diadematus with an auditory stimulus: a 400 Hz sound triggering a stereotyped "leg raising" reaction. Active spiders reacted fast irrespective of night or day. Immobile spiders during the day? Also fast. Immobile spiders at night? Much slower! 🧵2/5

Daniela Rößler reposted

Mikkel Roald-Arbøl
@roald-arboel.com

We do an awful lot of looooong video recordings in our lab and have long wanted an easy way to clip, compress and combine videos for our workflows. So here's #croppy! 🦀 I hope others will find it useful too - I'd love to hear if you do! And would appreciate if you give it a star on Github! 🌟

Daniela Rößler@roesslerdaniela.bsky.social

Our postdoc @roald-arboel.com made a thing! #Croppy is #free and awesome for fast and effective #video #editing and it has a #GUI! Need to crop a part of a video? Need to trim a video? Need to combine videos? Need to compress a video? roald-arboel.com/croppy/

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Daniela Rößler
@roesslerdaniela.bsky.social

“Jobs” is where you manage all the jobs you’ve created. You can start or stop jobs and monitor their progress. If your computer has multiple GPU/CPU cores, you can even choose to run jobs in parallel for a nice speed-up.

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Daniela Rößler
@roesslerdaniela.bsky.social

“Compress” allows you to change the encoding of a file, which often means compressing to save space. But it can e.g. also be used to change your “.mov” file to “.mp4” or lower your frame rate.

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Daniela Rößler
@roesslerdaniela.bsky.social

Don’t want to use expensive video editing software or use ffmpeg in the terminal? Croppy is for YOU! For all actions, you choose where the new files go, what they’ll be called, and how they’re encoded. If you have a GPU, then Croppy detects it automatically to allow you to speed things up-no fuzz.

Daniela Rößler reposted

Atal Pande
@atal-pande.bsky.social

Really excited to share that my first PhD chapter is now out in @currentbiology.bsky.social! 🕷️👀 We show that visually hunting spiders have repeatedly evolved forward-facing eyes, highlighting the remarkable evolutionary flexibility of their modular visual system. doi.org/10.1016/j.cu...

cell.comHunting ecology predicts eye arrangements in the modular visual system of spidersPande et al. show that visually hunting spiders have convergently evolved forward-facing eyes. The positions and orientations of the eyes show the greatest morphological disparity and fastest evolutio...

Daniela Rößler reposted

Lauren Sumner-Rooney
@laurensr.bsky.social

Beyond proud of @atal-pande.bsky.social, whose first PhD chapter is out now in @currentbiology.bsky.social! Atal shows that spiders that use their vision to hunt have convergently evolved similar eye arrangements, which imply lots of resampling of frontal space www.sciencedirect.com/science/arti...

sciencedirect.comHunting ecology predicts eye arrangements in the modular visual system of spidersVision is one of the most important senses used by animals and contributes to fundamental behaviors, including foraging, navigation, and mate detectio…

Daniela Rößler reposted

Evolutionary Biomechanics lab Greifswald
@evoimec.bsky.social

Spider running performance varies enormously. We joined forces with David Labonte's Evolutionary Biomechanics lab in London for the broadest spider speed assay so far: 258 spp / 139 families Preprint: doi.org/10.64898/202... Press coverage by the New Scientist: www.newscientist.com/article/2532...

newscientist.comThe world's fastest spider tops 3.5 metres per secondThe most comprehensive database ever compiled of how fast arachnids can run has shown how leg anatomy and evolutionary history influence spiders’ running speed
Daniela Rößler
@roesslerdaniela.bsky.social

Please spread this talented and wonderful human’s name and work. Maartje @maartjevandenderen.bsky.social just finished her Scientific Illustration Master and is leaping into freelancing next. Got 💰 and #illustration needs? Look no further!! www.maartjevandenderen.nl

maartjevandenderen.nlMaartje van DenderenMaartje van Denderen is a Scientific Illustrator, interested in insects, mushrooms, and plants.
Daniela Rößler@roesslerdaniela.bsky.social

Massive congrats to @maartjevandenderen.bsky.social for defending her fantastic thesis! 🥳 Maartje did her scientific illustration thesis with us on #spider #sleep @sleeblab.bsky.social Super cool experience & a pleasure to advise her. 👀 to hire an #illustrator >>> 💻 📞 Maartje!!! Colored pencil 🤯:

Daniela Rößler
@roesslerdaniela.bsky.social

🧵 Summary thread on our latest #spider #research. No time to read the #study ? But dying to know why spiders may twerk? This is for you: 🧵

Nadja Geiger@nadjageiger.bsky.social

New paper alert!🕷️✨ Tiny spider. Shiny abdomen. Suspiciously wiggly bum. In our new study, we asked what abdomen bobbing in this jumping spider is really all about: Cute? Yes. Meaningful? Let’s find out...! [1/8] @unibonn.bsky.social link.springer.com/article/10.1007/s00265-026-03745-1