Johann Mourier
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sharkmourier.bsky.social
Johann Mourier
@sharkmourier.bsky.social
4.2K followers 670 following 70 posts
Shark scientist 🦈 & behavioural ecologist | Animal Social Networks
Junior Professor at University of Montpellier @umontpellier.bsky.social | Lab MARBEC
Website: www.johannmourier.com
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sharkmourier.bsky.social
Johann Mourier @sharkmourier.bsky.social · Aug 22
‼️ 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
Reposted by Johann Mourier
shaunkillen.bsky.social
🧵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.
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.
ShoalBase.org
November 25, 2025 at 1:11 PM
sharkmourier.bsky.social
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/...
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.
www.radiofrance.fr
November 23, 2025 at 11:22 AM
sharkmourier.bsky.social
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...
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.
news.fiu.edu
November 3, 2025 at 10:20 AM
Reposted by Johann Mourier
eea2025.bsky.social
✨ Maria shared her research on leveraging ISRA declaration into conservation action: Common Guitarfish within the Murcia Eastern Coast case study #EEA2025
October 29, 2025 at 1:33 PM
Reposted by Johann Mourier
natecoevo.nature.com
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...
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...
www.nature.com
September 17, 2025 at 8:53 AM
Reposted by Johann Mourier
gfalbery.bsky.social
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)
September 8, 2025 at 2:53 PM
sharkmourier.bsky.social
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
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...
rdcu.be
September 5, 2025 at 2:32 PM
sharkmourier.bsky.social
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/...
August 31, 2025 at 8:06 AM
sharkmourier.bsky.social
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
August 23, 2025 at 6:51 PM
sharkmourier.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
August 22, 2025 at 4:56 PM
Reposted by Johann Mourier
iucnshark.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
August 12, 2025 at 5:44 AM
Reposted by Johann Mourier
physiologyfish.bsky.social
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
July 22, 2025 at 8:21 AM
Reposted by Johann Mourier
whysharksmatter.bsky.social
Warming oceans a turn-off for female Critically Endangered sharks www.lancaster.ac.uk/news/warming...
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…
www.lancaster.ac.uk
July 17, 2025 at 1:13 PM
Reposted by Johann Mourier
whysharksmatter.bsky.social
This paper from Israeli colleagues documents a recent fatal shark bite and provides management recommendations to reduce the chance of this happening in the future.

I don't think I've ever seen a paper completed and published so soon after something happens.

www.sciencedirect.com/science/arti...
Fatal shark incident in the eastern Mediterranean Sea highlights urgent need for enhanced management measures
The aggregation of dusky sharks (Carcharhinus obscurus) and sandbar sharks (C. plumbeus) around coastal infrastructure in the eastern Mediterranean Se…
www.sciencedirect.com
July 16, 2025 at 6:26 PM
sharkmourier.bsky.social
Little science art using my Wacom palette and software Krita
This is a painted comber (Serranus scriba) from the Mediterranean Sea
July 14, 2025 at 4:41 PM
Reposted by Johann Mourier
cjfas.bsky.social
Have you used fish telemetry in your research? @cjfas.bsky.social is accepting submissions on how telemetry is being applied to support conservation and management in aquatic ecosystems. This includes work from @icft2025.bsky.social ▶️ buff.ly/Y2FTYRL
Canadian Journal of Fisheries and Aquatic Sciences social card to promote call for papers on new collection 'Fish telemetry to address management and conservation' with image of boat and fish underwater.
July 9, 2025 at 7:50 PM
Reposted by Johann Mourier
thefsbi.bsky.social
Check out the editorial for the Special Issue: "Advances in telemetry approaches and technologies applied to fish ecology and management", which sets the scene and rational for this exciting collection of papers. doi.org/10.1111/jfb....
Authors: J. Mourier, T. Murray, R. Lennox, K. Birnie-Gauvin
July 9, 2025 at 3:35 PM
sharkmourier.bsky.social
Invité ce matin sur le plateau de Télématin sur France 2 pour parler requins bien sûr ! Une opportunité d’évoquer les 50 ans des dents de la mer et de promouvoir mon livre.

www.dailymotion.com/video/x9lt3qy
Le grand témoin - Johann Mourier
Dailymotion video by Télématin
www.dailymotion.com
June 24, 2025 at 1:58 PM
sharkmourier.bsky.social
Successful fieldtrip as part of the NETFISH project & A. Laurioux's PhD thesis with the tagging & release of 93 tiny coastal Mediterranean fishes (min=8.5cm) in 4 days with @lotektelemetry.bsky.social high resolution acoustic positioning system
@umontpellier.bsky.social @aquatictracking.bsky.social
June 22, 2025 at 9:36 AM
Reposted by Johann Mourier
dr-yannis.bsky.social
New paper! We review how to use AI to analyze animal borne camera tag footage. Important with how large these datasets are getting!

besjournals.onlinelibrary.wiley.com/doi/10.1111/...
June 21, 2025 at 1:03 PM
Reposted by Johann Mourier
sharkscience.bsky.social
Tonic immobility in cartilaginous fishes (Chondrichthyes): function, evolutionary history, and future directions 🦑🧪🐟🦈 link.springer.com/article/10.1...
Tonic immobility in cartilaginous fishes (Chondrichthyes): function, evolutionary history, and future directions - Reviews in Fish Biology and Fisheries
Tonic immobility, a temporary cessation of voluntary movements, is a widespread phenomenon within the animal kingdom. While commonly regarded as an ‘anti-predator’ defence strategy, empirical evidence...
link.springer.com
June 11, 2025 at 3:07 PM
Reposted by Johann Mourier
camilleadaoust.bsky.social
A l'occasion de la Conférence sur l'océan #UNOC3, je vous embarque pour @franceinfo.fr dans les profondeurs de la réserve marine protégée de Cerbère-Banyuls, véritable "modèle à suivre", note @joachimclaudet.bsky.social www.franceinfo.fr/environnemen...
REPORTAGE. Mérous par centaines, dialogue avec les pêcheurs... La réserve marine de Banyuls-Cerbère, un "modèle à suivre" pour protéger la mer
Les aires marines protégées sont au cœur des discussions de la Conférence des Nations unies sur les océans, qui se déroule à Nice de lundi à vendredi. Franceinfo a plongé dans la plus ancienne de Fran...
www.franceinfo.fr
June 9, 2025 at 5:21 AM
sharkmourier.bsky.social
Just back from the field for the start of our new project NETFISH using @lotektelemetry.bsky.social high-resolution telemetry to track small coastal fishes of the Mediterranean including damselfish. We deployed an array of receivers and next week we will be back for tagging ~100 fishes. More soon...
June 7, 2025 at 1:50 PM
Reposted by Johann Mourier
thesimslab.bsky.social
NEW in @science.org Global tracking #MarineMegafauna shows <8% of areas used overlap w/ existing MPAs, while >75% of important areas overlapped by threats like #fishing #shipping & ocean warming - 30x30 goal will be insufficient for their conservation www.megamove.org @thembauk.bsky.social
Global tracking of marine megafauna space use reveals how to achieve conservation targets
The recent Kunming-Montreal Global Biodiversity Framework (GBF) sets ambitious goals but no clear pathway for how zero loss of important biodiversity areas and halting human-induced extinction of thre...
science.org
June 5, 2025 at 6:41 PM
Reposted by Johann Mourier
iucnshark.bsky.social
The event will present the Coalition’s vision, key action pillars, and examples of national efforts already underway — and will provide a platform for endorsements.

Learn more: www.haltsharkrayextinction.org

#UNOC3 #OceanDecade #Sharks #Rays #Biodiversity #MarineConservation
Halt Shark and Ray Extinction
www.haltsharkrayextinction.org
June 4, 2025 at 1:01 PM