Johann Mourier

Occitanie : Une reconnaissance mondiale pour l’Université de Montpellier au classement du TIME Magazine 2026  - Ecomnews Ce classement, développé par TIME Magazine en partenariat avec Statista R, vise à offrir une évaluation rigoureuse et contemporaine des universités du monde entier. Il repose sur des critères multidim...

#Classement | Une reconnaissance mondiale pour l’Université de Montpellier au classement du TIME Magazine 2026 avec une 244e place mondiale.

ecomnews.fr/news/occitan...

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#jpoUM 📅📣 J-12 | PORTES OUVERTES de l’Université de Montpellier

🗓️ Samedi 14 février 2026
📍 Tous les campus de l'UM
🎓 +600 diplômes, échanges, visites, conférences
👉 Orientation & masters au programme !

🔗 + d'infos : www.umontpellier.fr/agenda/journ...

doesn't look like a common eagle ray on the picture...

Revealing the hidden patterns of shark and ray diversity over the past 145 million years Gardiner et al. reconstruct the diversity of sharks and rays across the past 145 million years using deep learning and an extensive dataset. Their results unveil previously hidden patterns, including ...

Our new paper is online! We found that 1) today's shark & ray diversity was already reached ~100Ma; 2) that the K/Pg extinction was not catastrophic; 3) that the max diversity was reached ~50Ma; and 4) that today's diversity is depleted compared to the past.
www.cell.com/current-biol...

Extinction risk and the spatial patterning of shark, ray and chimaera richness, including hotspots of coastal and deepwater richness, for wide-ranging and endemic species.

Sharks & rays are sentinels of ocean health.

- Global abundance has been fished down by 65%,
- Now 37.5% of species are threatened,
- The current extinction rate is 25–250 times greater than the background fossil record, with greatest losses in tropical coastal seas. #BiodiversityTargets

Bending back the biodiversity loss curve of sharks and rays. The loss of sharks and rays to date has involved serial depletion of the largest, most evolutionary and functionally distinct species, and the increasing prevalence of smaller-bodied species that have benefited from release from predation.

New paper out today in @natrevbiodiv.nature.com by the #GlobalSharkTrends team: Bending back the curve of shark & ray biodiversity loss;
Read the paper here: rdcu.be/eZ9n9
@sfu.ca
@sfubiosciences.bsky.social
@earth2ocean.bsky.social

NEW PAPER ALERT | Only One Percent of Important Shark and Ray Areas in the Western Indian Ocean Are Fully Protected From Fishing Pressure.

Read the full paper in Ecology and Evolution here: doi.org/10.1002/ece3...

#shark #ray #chimaera #ISRA #publication #biodiversity #conservation

‼️New paper‼️
Social units of the Crozet killer whales are composed of both related & unrelated individuals, with an additive mortality event from the late 1990s leading unrelated individuals that survived to associate and join social units.
link.springer.com/article/10.1...

YouTube video by Collectif Les Argonautes Un requin vaut-il plus mort ou vivant ? (avec Johann Mourier)

Une vidéo très complète avec le Collectif Les Argonautes dans laquelle on vous explique pourquoi un requin vivant est plus rentable à long terme qu'un requin mort. Illustrée par la réouverture de la pêche aux requins profonds aux Maldives (qui était un sanctuaire à requins).
youtu.be/zmeGdN9JHOU?...

One of the best project I have ever seen. I love this battle between the smart Oz cockatoos 🦜 and human 🚶‍♂️about bins 🚮!
It seems that this arm race is unlimited and will give scientists work for a long time 😄
It also give me great souvenirs of my year spent in Sydney!

bsky.app/profile/shar...

I will do!
I am now also tracking using high-resolution telemetry some small fish species such as damselfish or Mediterranean rainbow wrasses.

Historic Victory for Sharks as Oceanic Whitetips Upgraded to Appendix I at CITES Banning International Trade Samarkand, Uzbekistan, Nov. 27, 2025 – CITES CoP20 Parties voted to list oceanic whitetip sharks on Appendix I, the highest level of protection offered by CITES. The vote marks a major victory for one...

Historic victory for sharks: #CITESCoP20 Parties voted to list oceanic whitetip sharks on Appendix I, the highest level of protection offered by CITES.

“Today’s decision is a watershed moment for all sharks and rays,” said WCS’s Luke Warwick.

🌏 Read more: bit.ly/4olha9w

ShoalBase | Join, Explore, Contribute Now ShoalBase offers a global database on fish social behaviour, supporting research, conservation, and ecology through community contributions and visual data mapping.

🧵1/9 There are 35,000+ fish species, but we have formal social-behaviour classifications for a tiny fraction. Most knowledge lives in the experience of researchers, fishers, divers, aquarists, naturalists, and Indigenous communities, but almost none of it is centralised. So we built ShoalBase.org.

Great initiative !

Requin versus Méduse Christophe Galfard reçoit Guillaume Néry, champion d'apnée , le biophysicien Bill François et Johann Mourier, biologiste pour un combat Requin VS Méduse.

La bataille a fait rage entre méduses & requins. Quel vainqueur?
Pour le savoir écoutez l’émission BIGBANG @franceinter.fr animée par @christophegalfard.bsky.social
Méduses défendues par @billfrancois.bsky.social) & requins par moi-même, arbitré par Guillaume Nery
www.radiofrance.fr/franceinter/...

Super-habitats could hold key to shark conservation Scientists have identified a super-habitat for reef sharks in Fakarava. The finding could have major implications for conservation.

Shark SUPER-HABITATS : key for conservation!
Habitats that include all critical activities of shark's life cycle: resting, feeding, cleaning, mating, parturition.
news.fiu.edu/2025/super-h...

✨ Maria shared her research on leveraging ISRA declaration into conservation action: Common Guitarfish within the Murcia Eastern Coast case study #EEA2025

It was already been reported. See this paper: micologia.uv.cl/index.php/rb...

Density-dependent network structuring within and across wild animal systems - Nature Ecology & Evolution The number of individuals in a given space influences animal interactions and network dynamics. Here the authors identify general rules underlying density dependence in animal networks and reveal some...

The number of individuals in a given space influences animal interactions and network dynamics. Here the authors identify general rules underlying density dependence in animal networks and reveal some fundamental differences between spatial and social dynamics. 🧪

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

Celebrating the publication of our big collaborative spatial-social meta-analysis of density-dependent transmission effects, out now in Nature Eco Evo! doi.org/10.1038/s415... (or rdcu.be/eD6eB)

Density-dependent network structuring within and across wild animal systems Nature Ecology & Evolution - The number of individuals in a given space influences animal interactions and network dynamics. Here the authors identify general rules underlying density...

Happy that my shark data contributed to this collaborative paper brilliantly led by @gfalbery.bsky.social on animal social networks. Out in @natecoevo.nature.com

If density drives greater network connectedness, >80% of relationships are nonlinear (75% with saturating trends).
Read: rdcu.be/eD6eB

Thanks, looking forward to reading it!

good job! do you have a link to the paper?

Our paper made the cover of the journal Animal Conservation

Shark feeding affects health and female reproductive investment in blacktip reef sharks from French Polynesia
zslpublications.onlinelibrary.wiley.com/doi/10.1111/...

New paper introducing the term of SUPER HABITAT for sharks in which all critical activities (resting, feeding, mating & giving birth) occurs.
🦈🌴❤️🍽️ 👶
Access the paper here:
www.sciencedirect.com/science/arti...
@dr-yannis.bsky.social @charlie-huveneers.bsky.social

‼️ New important shark paper 🦈
We demonstrate that all critical life stages (resting, feeding, being cleaned, mating & giving birth) can occur in the small Fakarava channel & we define it as a “super habitat”
www.sciencedirect.com/science/arti... @dr-yannis.bsky.social @charlie-huveneers.bsky.social

NEW PAPER ALERT | Important Shark and Ray Areas can inform conservation planning in the Mediterranean and Black Seas

Read the full paper in the journal iScience here: doi.org/10.1016/j.is...

#shark #ray #chimaera #research #marine #conservation #ISRA Thanks to the Shark Conservation Fund

New paper in Ecology & Evolution: analysed 187 species of rays & skates to explore patterns of sexual size dimorphism. Turns out SSD in rays doesn’t follow the same rules as in sharks.

❓Differences in reproductive strategies❓

🔗 doi.org/10.1002/ece3...

#SharkScience #Evolution #MarineBiology

Warming oceans a turn-off for female Critically Endangered sharks - Lancaster University Critically Endangered female angelsharks (Squatina squatina) are changing normal mating routines in warming oceans as they prioritise staying cool over visiting breeding grounds when things get too…

Warming oceans a turn-off for female Critically Endangered sharks www.lancaster.ac.uk/news/warming...