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Posts by Dr. Jonas Wolff

I remember we were talking about this at the ECA excursion. Great to read about your findings!

1 week ago 1 0 0 0
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Scientific conferences can be a bore. Can jokes liven them up? Science speaks with ecologist Stefano Mammola about the power of humor to enhance science communication

Scientific conferences can be a bore. Can jokes liven them up?

Science Careers speaks with ecologist @stefanomammola.bsky.social about the power of humor to enhance science communication. https://scim.ag/4uCVf1N

1 month ago 25 8 3 2

Great news! Congratulations!!

3 weeks ago 1 0 0 0

Happy Birthday, Catherine!

1 month ago 0 0 0 0
The colonial spider web in Sulfur Cave, is home to a mixed colony of Tegenaria domestica and Prinerigone vagans. A. Side view; B. frontal view. The swarm of adult chironomids is visible near the cave stream. Photo A: Marek Audy.

The colonial spider web in Sulfur Cave, is home to a mixed colony of Tegenaria domestica and Prinerigone vagans. A. Side view; B. frontal view. The swarm of adult chironomids is visible near the cave stream. Photo A: Marek Audy.

Biggest spider web in the world: the area of a flat.

Found in a sulphur-smelling cave in the Balkans, this ~100m² spongy web is maintained by two species of solitary 🕷️. The 110K inhabitants feed on midges, probably because they can't see the other spiders.

🧪
subtbiol.pensoft.net/article/1623...

2 months ago 30 11 3 5
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Spiders possess multiple types of silk glands, which produce silk materials with contrasting properties.
What happens if they combine different silks into a single line - Does this reinforce, even toughen, the silk thread?

We got some answers from cellar and cave spiders:
doi.org/10.1039/D5SM... 🔓

2 months ago 2 2 0 0
Figure showing a video still from a high speed video of a netcasting spider capturing a cricket with its elastic web held in the front legs. Left to the video still there are load-strain diagrams of different lines in the web showing that the upper lines are stiff and strong and the lower lines are highly extensible. Left to the diagrams there are scanning elactron microcopy images of the dfifferent lines, showing that the upper, stiffer lines are cables made of many parallal fibres, whereas the lower lines have a soft central core with adjoined looped fibres. The degree of looping correlates with how much the spiders post-process the silk after spinning. This way they can tailor the stiffness of each line in the web separately and create a vertical stiffness gradient throughout the whole web architecture from stiff and strong in the upper load bearing frame to soft and hyper-elastic in the lower part that is rapidly extended and thrown against the prey at high speed during the predatory strike.

Figure showing a video still from a high speed video of a netcasting spider capturing a cricket with its elastic web held in the front legs. Left to the video still there are load-strain diagrams of different lines in the web showing that the upper lines are stiff and strong and the lower lines are highly extensible. Left to the diagrams there are scanning elactron microcopy images of the dfifferent lines, showing that the upper, stiffer lines are cables made of many parallal fibres, whereas the lower lines have a soft central core with adjoined looped fibres. The degree of looping correlates with how much the spiders post-process the silk after spinning. This way they can tailor the stiffness of each line in the web separately and create a vertical stiffness gradient throughout the whole web architecture from stiff and strong in the upper load bearing frame to soft and hyper-elastic in the lower part that is rapidly extended and thrown against the prey at high speed during the predatory strike.

Netcasting spiders modulate silk thread stiffness via a tailorable multi-fibre meta-structure to construct a web that is hyperelastic and high load-bearing at the same time.
Read about our discovery in PNAS: doi.org/10.1073/pnas...
🔓 & with video content!

2 months ago 17 8 1 0

Just back from a productive writing retreat of @evoimec.bsky.social and @multipleye-lab.bsky.social on the remote island of Hiddensee.
Look out for new papers coming up from our labs!

4 months ago 8 1 0 0
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Royal Society Publishing Photography Competition | Royal Society Celebrating the power of photography to communicate science.

Wow! Our long-term collaborator and friend Martín Ramírez is the winner of the @royalsocietypublishing.org photo competition, with a SEM image from our joint research on spider silk!!
royalsociety.org/journals/pub...

4 months ago 26 12 0 1

Thanks for joining. These were fruitful 3 days.
Plus I have eaten so well and laughed so much as not in a long time.

4 months ago 1 0 0 0
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This is the Sunburst Candy Spider from Thailand. Not AI (sucks to have to declare this). Very real and had been on my wish list for a long time.

The taxonomic placement is unclear, so we are leaving it at Cyrtarachninae.

4 months ago 660 154 21 21
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This is a "reindeer cyclone", a defensive behavior that has been observed in herds of reindeer, even in captivity.

The fawns and older animals are at the center, the strongest animal in the outer lanes.

The point is to confuse the brains of predators accustomed to stalking a single outlier.

1 year ago 645 161 19 26

Looks like a juvenile huntsman(?) Amazing catch for a Salticid.

5 months ago 2 0 0 0

How cool is that? Is that a tree house?

5 months ago 0 0 0 0
Photo of Maitry Jani in the lab, smiling, showing a large live spider sitting on her hand.

Photo of Maitry Jani in the lab, smiling, showing a large live spider sitting on her hand.

@maitryjani.bsky.social from my lab @evoimec.bsky.social talks about her scientific journey and newest paper in @jexpbiol.bsky.social ERC Spotlight:
journals.biologists.com/jeb/article/...

5 months ago 7 3 0 0
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Toward a global repository of insect traits (GRIT) Biodiversity loss is accelerating, yet insect conservation is hindered by the absence of a centralised, comprehensive trait database. We propose the GRIT, a FAIR, open-access platform uniting datase...

#LIBresearch: A new study introduces the Global Repository of Insect Traits (GRIT) — a worldwide initiative integrating insect trait data to make insects more understandable and comparable across ecosystems. → doi.org/10.1111/icad.70035

@cscherber.bsky.social

5 months ago 25 14 1 0
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Cool. Congrats!
I only found one in 3.5 yrs of fieldwork in Australia.
Try to feed it a spider.

5 months ago 3 0 2 0

I love these critters!
Thanks for your great contributions to the taxonomy of whip-spiders!

5 months ago 2 0 1 0

Reposting for the Monday morning scrollers! Funded PhD opportunity with me @multipleye-lab.bsky.social @bristolbiosci.bsky.social - spiders, their eyes, and their babies under long- and short-term light pollution!

6 months ago 16 21 0 0
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AI Abuse to Skirt Copyright Law - Macro Photography by Nicky Bay In the past week, a number of prominent nature photographers showed how their photographs were being stolen and mangled into "AI-nonsense", deceiving countless others into believing the made-up storie...

www.nickybay.com/ai-abuse-to-...
AI abuse on macrophotography and AI generation of incorrect captions. Here are examples compiled by wildlife photographer Nicky Bay.

7 months ago 10 5 0 0
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Our second invited #morphology speaker @wolffspider.bsky.social from @unigreifswald.bsky.social presented on the amazing biomechanics of #spider extended phenotypes and their ecolution

7 months ago 7 1 1 0
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It was an absolute joy sharing this amazing web of brilliant people here in Zadar. Thank you all for coming and making it so special! 🕷️❤️

7 months ago 17 9 2 2

I guess it would have been cooperative if I had captured it :-D

7 months ago 1 0 0 0

Thank you @mpavlek.bsky.social et al. for organising this wonderful @35theca2025.bsky.social conference! This will remain a memorable event.

7 months ago 3 0 1 0
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Happy to say the 35th ECA in Zadar has officially started!

7 months ago 14 7 1 0
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Dear all, the registration and abstract submission deadline is approaching in a few days! Friday June 20th at midnight!!! 🚨 Don't miss the chance to join us in a beautiful Zadar! 🌞https://event.fourwaves.com/eca2025/pages

10 months ago 4 3 0 0
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🕷️🌍🕸️ Spiders aren't creepy crawlies—they're ecosystem heroes! From pest control to biotech inspiration to key figures in our collective culture, a new review reveals the many services spiders provide:

🔗 doi.org/10.1111/brv....

(drawing by @jmalumbresolarte.bsky.social)

10 months ago 69 26 5 5

Shame the males do not use their abdominal flaps for gliding 😆
Wonder how long evolution would take to "figure this out".

10 months ago 1 0 0 0
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Our latest paper on the jump kinematics and choreography in the Oz Splendid Peacock spider. We filmed & analysed locomotory jumps in male & female spiders. The males are incredibly light - measuring just 2mg - and oh they can jump! Videos in the thread. Open Access - read here: tinyurl.com/4bnpz9tz

1 year ago 52 18 2 2
Cyphonia clavata, a treehopper with a helmet that looks like an ant - this is a brown insect, head towards us, with green eye transparent wings, and a weird ass growth out of its head. It is absolutely crazy. Cyphonia clavata, a treehopper with a helmet that looks like an ant - this is a brown insect, head towards us, with green eye transparent wings, and a weird ass growth out of its head. It is absolutely crazy.

Cyphonia clavata, a treehopper with a helmet that looks like an ant - this is a brown insect, head towards us, with green eye transparent wings, and a weird ass growth out of its head. It is absolutely crazy. Cyphonia clavata, a treehopper with a helmet that looks like an ant - this is a brown insect, head towards us, with green eye transparent wings, and a weird ass growth out of its head. It is absolutely crazy.

Go home everyone, there is absolutely nothing happening here.

....

😍

⚒️🧪🦀🦑

(Photo by Andreas Kay)

1 year ago 103 19 6 2