Fumio Takeshita
@fum10.bsky.social
Researcher & curator of marine invertebrates at KMNH / Research for animal behaviour & ecology
Reposted by Fumio Takeshita
The kissing of sea slugs. Reminds me of Gustav Klimt paintings. Elysia viridis, commonly known as the solar-powered sea slug or sap-sucking slug, is uniquely distinguished by its rare ability to steal plant-like cellular machinery from the algae it eats and use it to perform photosynthesis.
July 31, 2026 at 8:11 AM
The kissing of sea slugs. Reminds me of Gustav Klimt paintings. Elysia viridis, commonly known as the solar-powered sea slug or sap-sucking slug, is uniquely distinguished by its rare ability to steal plant-like cellular machinery from the algae it eats and use it to perform photosynthesis.
It’s so happy to announce my paper entitled “Density-dependent courtship interference by neighbors in fiddler crabs: Increased male-male competition but reduced female choosiness at high population density“ has been published in behavioral ecology and sociobiology!
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Density-dependent courtship interference by neighbors in fiddler crabs: Increased male-male competition but reduced female choosiness at high population density - Behavioral Ecology and Sociobiology
High population density increases the proportion of unsuccessful males in both male-male competition and female choice contexts. This prediction assumes that these components of sexual selection opera...
link.springer.com
June 16, 2026 at 1:13 PM
It’s so happy to announce my paper entitled “Density-dependent courtship interference by neighbors in fiddler crabs: Increased male-male competition but reduced female choosiness at high population density“ has been published in behavioral ecology and sociobiology!
link.springer.com/article/10.1...
link.springer.com/article/10.1...
Reposted by Fumio Takeshita
Nuptial coloration in fiddler crabs as an indicator of reproductive quality
#Crab #ColSci #Signal #IndividualQuality
doi.org/10.1093/behe...
#Crab #ColSci #Signal #IndividualQuality
doi.org/10.1093/behe...
Crab Walking with Large Yellow Claw
ALT: Crab Walking with Large Yellow Claw
static.klipy.com
June 9, 2026 at 4:27 AM
Nuptial coloration in fiddler crabs as an indicator of reproductive quality
#Crab #ColSci #Signal #IndividualQuality
doi.org/10.1093/behe...
#Crab #ColSci #Signal #IndividualQuality
doi.org/10.1093/behe...
In @eLife.bsky.social: Evolution of sideways locomotion in crabs doi.org/10.7554/eLif...
Evolution of sideways locomotion in crabs
doi.org
April 21, 2026 at 1:45 PM
In @eLife.bsky.social: Evolution of sideways locomotion in crabs doi.org/10.7554/eLif...
Our paper is out from Animal Behaviour! Fiddler crabs can discriminate between neighbor unfamiliar individuals and familiar ones in the territorial fighting.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Dear enemy phenomenon in fiddler crabs: escalation of fights with unfamiliar individuals rather than familiar neighbours
In territorial animals, fights against strangers are often more aggressive than those against neighbours. This is called the ‘dear enemy’ phenomenon a…
www.sciencedirect.com
February 6, 2026 at 9:11 AM
Our paper is out from Animal Behaviour! Fiddler crabs can discriminate between neighbor unfamiliar individuals and familiar ones in the territorial fighting.
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Fumio Takeshita
🚨 Exciting new crab preprint! A Japanese team found that sideways walking only evolved once! Maybe carcinization itself is necessary but not sufficient to go sideways?
When it's lost, the species that go forward have alternate anti predation behaviors. 🧪🦑🦀
www.biorxiv.org/content/10.1...
When it's lost, the species that go forward have alternate anti predation behaviors. 🧪🦑🦀
www.biorxiv.org/content/10.1...
Evolution of sideways locomotion in crabs
The evolutionary change in the mode of locomotion is often a major evolutionary event, triggering diversification. Sideways locomotion is a defining feature of true crabs (Brachyura) and may have cont...
www.biorxiv.org
September 22, 2025 at 8:31 PM
🚨 Exciting new crab preprint! A Japanese team found that sideways walking only evolved once! Maybe carcinization itself is necessary but not sufficient to go sideways?
When it's lost, the species that go forward have alternate anti predation behaviors. 🧪🦑🦀
www.biorxiv.org/content/10.1...
When it's lost, the species that go forward have alternate anti predation behaviors. 🧪🦑🦀
www.biorxiv.org/content/10.1...
Non-flying bird has been flying
December 11, 2025 at 12:23 PM
Non-flying bird has been flying
I’m happy to announce our paper published online! Thank you for your interest!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Parasite aggregations: Females attract conspecific males to the hosts in the ectoparasitic isopod Onisocryptus ovalis
For symbionts of marine invertebrates, migration between hosts for mate-searching entails various ecological difficulties. Aggregation in hosts is a b…
www.sciencedirect.com
May 10, 2025 at 11:03 AM
I’m happy to announce our paper published online! Thank you for your interest!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Fumio Takeshita
Super happy to see our new article on how pharmaceutical pollution can influence salmon migration out in @science.org!
This was a huge effort by a great team of researchers over the last few years!
You can read the paper here: science.org/doi/10.1126/sc…!
This was a huge effort by a great team of researchers over the last few years!
You can read the paper here: science.org/doi/10.1126/sc…!
April 10, 2025 at 7:12 PM
Super happy to see our new article on how pharmaceutical pollution can influence salmon migration out in @science.org!
This was a huge effort by a great team of researchers over the last few years!
You can read the paper here: science.org/doi/10.1126/sc…!
This was a huge effort by a great team of researchers over the last few years!
You can read the paper here: science.org/doi/10.1126/sc…!
妻の知り合いの畑で採れた島落橋を楽しんでいる
March 29, 2025 at 10:01 AM
妻の知り合いの畑で採れた島落橋を楽しんでいる
Reposted by Fumio Takeshita
Our ⚠️March/April issue ⚠️ just dropped with this gorgeous cover image of an adult yellow-bellied marmot (Marmota flaviventer) at the Rocky Mountain Biological Laboratory in Colorado. Photo: Daniel T. Blumstein
Check the new issue out here 👉 academic.oup.com/beheco/issue...
Check the new issue out here 👉 academic.oup.com/beheco/issue...
March 28, 2025 at 3:12 PM
Our ⚠️March/April issue ⚠️ just dropped with this gorgeous cover image of an adult yellow-bellied marmot (Marmota flaviventer) at the Rocky Mountain Biological Laboratory in Colorado. Photo: Daniel T. Blumstein
Check the new issue out here 👉 academic.oup.com/beheco/issue...
Check the new issue out here 👉 academic.oup.com/beheco/issue...