@ignasinr14
Shark scientist. Looking into the biological & ecological traits of sharks and their interactions with fisheries. Strong focus on bluntnose sixgill sharks in the Mediterranean Sea. At @ub.edu @marinemegafauna.bsky.social
There's some merch too :)
From sixgills to baskings! Our new #maximus_SHARK project is up and running, and we're visiting the Catalan fishing guilds to start a new collaboration with their fishermen. Together, we'll try to broaden the ecological knowledge of this species in the NW Mediterranean. @manelgazo.bsky.social
New maps reveal the scale of #saiga migrations across #Kazakhstan and the threats they face.
They highlight key migration routes and show how roads, railways and infrastructure can fragment habitat and disrupt movements.
Explore the interactive maps & fact sheets: cami.cms.int/news/new-map...
Killer whales and dolphins have been recorded working together to hunt salmon :)
www.theguardian.com/environment/...
The latest #FAO #SoMFi report shows we're steadily getting to an overall more sustainable framework of #resource exploitation. Room for improvement (e.g 28% women workforce, some important fish stocks yet to reach their MSy) but results tell us we're on the right track.
Just an hour ago at the CITES #CoP20 all Mantas and Devil Rays (Mobulidae spp.) were accepted by consensus to uplist from Appendix II to Appendix I!
Follow along for more updates live.
#CITESCoP20 #mobulids #manta #devilrays #shark #ray #chimaera #biodiversity #conservation #trade #conference
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
Our new research paper is out. We found microplastic ingestion by the blackmouth catshark (Galeus melastomus) in the canyoned continental margins of the Gulf of Lion was high, more than in other parts of the Mediterranean and was influenced by the role of those canyoned margins. Full thread 👇🏻🦈
Cutting teeth probably let smaller sharks get higher in the food web than those with grasping teeth. Awesome stable isotope study led by fabulous PhD graduate Sabrina Riveron!
@griffith.edu.au
onlinelibrary.wiley.com/doi/10.1002/...
The #Bocadolça project has been carried out at the Faculty of Biology from the University of Barcelona, Institut de Recerca de la Biodiversitat (IRBio_UB), and has been supported by the Fundació Zoo de Barcelona and the Barcelona City Council. Illustrated version of the protocol: Vanessa Rovira.
Additionally, we’ve also set up a handling protocol for individuals that are caught by trawl and trammel nets to minimise their at-vessel and post-release mortality. This protocol has been designed in collab with the fishermen and an illustrated version has been created to be used on board. (2/3)
We’ve recently finished our #Bocadolça project, the main aim of which was to determine presence and seasonality of the bluntnose sixgill shark (Hexanchus griseus) in the deep waters off Catalonia (NW Mediterranean). @manelgazo.bsky.social (1/3)
Panel figure from the paper showing a map on the right with shark movement track and detection locations - the figure caption says: "On 11 July 2024, a fisherman from Lagos, Nigeria, reported capturing (a) a female bull shark with (b) an internal acoustic transmitter (ID 6510). The shark was originally tagged on 2 April 2021 at the St Lucia Estuary mouth on the east coast of South Africa (c). The tagged shark recorded 541 detections on 20 receivers in southern Mozambique and South Africa before it was last detected in Mossel Bay on 25 March 2022 before being reported captured off the coast of Nigeria. Photo credit: Mr. Akeem Kolawole."
Breaking barriers: Transoceanic movement by a bull shark
🌊 🧪 🦑
doi.org/10.1002/ecy....
Hey Johann. We’ve talked to the fishermen and we do have a few nore details. Any email address we could reach out to so we can share the info?
(Photos: unknown)
Yesterday, an unfortunate 7m-long basking shark (Cetorhinus maximus) was caught by trammel nets in Port de la Selva (NE Spain), close to shore. Sightings of this species start to be more frequent along the Catalan Coast at this time of the year, likely driven by ++[phytoplankton] in the region.
New study shows that #SouthernOcean #warming plays a greater role than #Arctic Ocean warming in shifting tropical #rainfall in a future climate, increasing rainfall in #Brazil and enhancing #drought risk in the #Sahel. www.nature.com/articles/s41...
Cognitive perception of circulating oxygen in seals is the reason they don’t drown 🦑🌎🧪🦭 www.science.org/doi/10.1126/...
So cool! Tagged four sixgills in the Med this year, 3 tags popped up and we got really close to getting one back but it finally drifted too far away…
Important paper shows white shark reproductive population in eastern Australia might be as few as 500 adults... challenges the idea that shark populations are "exploding"
onlinelibrary.wiley.com/doi/pdf/10.1...
Hola @antiguaroma.com Gracias por este hilo! Ahora que mencionas a Domiciano, si un dia lo consideras apropiado, un post sobre tu opinión acerca de su figura podria ser muy interesante. Esa fama de paranoico…hasta que punto es cierta?
Though we still need to work on proper reporting of discards, the study concludes sharks and rays represent little to no revenue for Mediterranean fleets.
New research by Colloca et al. found that the average contribution of elasmobranchs to the total annual landings of EU fisheries operating in the Mediterranean Sea from 2013 to 2022 was, in economic value...
0.60%.
link.springer.com/article/10.1...
Lots to learn from Rwanda
www.telegraph.co.uk/global-healt...
To set up a protocol for the release of accidentally captured bluntnose sixgill sharks 🦈…. the key is to listen and learn from the experts.
A huge thank you for your time and knowledge, skippers!
Projecte #Bocadolça @marinemegafauna.bsky.social @irbio-ub.bsky.social @ub.edu @ignasinr14.bsky.social
Oh no.
The wave of rising shark & ray extinction risk #GlobalSharkTrends
👉 started in rivers, estuaries, nearshore coastal waters
👉 before rapidly expanding out across the oceans.
Lower risk only in harder-to-fish nearshore habitats, ie,
👉 Kelp/algal reefs
👉 Rocky reefs, &
👉 Deepsea
🧵10/20
Cover of the new "global status of sharks, rays, and chimaeras" report
BREAKING: The IUCN Species Survival Commission Shark Specialist Group has released a new report on the global conservation status of sharks and their relatives.
portals.iucn.org/library/node...
Really nice paper guys!
No idea who to follow? 🧪🌊🦑
Try these starter packs & Follow All or some:
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Plankton Ecology: go.bsky.app/8fAUg8j
Nice! How long is an adult S.corona?