The final chapter of my PhD is published in Journal of Experimental Biology! And, we got the cover!
We used biologgers to estimate great hammerheads' temperature “sweet spot.” We saw they can perform well at a range of temps, which supports observations from the field. (1/2) 🌊🦑🧪🐟
This was a HUGE effort with LOTS of field time and LOTS of analysis – huge thank you to all my coauthors and the many folks who contributed in the field. Very proud of this one. (4/4)
@dr-yannis.bsky.social 🦑🧪🌊🐟
See the paper: link.springer.com/article/10.1...
‼️ 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
Popular press coverage, from phys.org, of the new paper by @fiu.bsky.social researcher @dr-yannis.bsky.social that explains how electric rays escape #shark predators by zapping them with an electric⚡ shock!!! 😮
New paper out today! Using accelerometers to generate thermal performance curves in great hammerhead sharks. Their low activation energies may explain why they can perform well across seasons.
Incredible biomass of bigeye jacks at Malpelo Island, Colombia
Individual and size-based variability in movements and residency by nurse sharks at a Caribbean Atoll - Marine Biology
Life stage-specific habitat use and trophic ecology of the critically endangered great hammerhead (Sphyrna mokarran) link.springer.com/article/10.1...
Further coverage, this time from National Geographic, of new paper by @dr-yannis.bsky.social discussing #electricrays using their shocks to avoid getting eaten by large sharks
www.nationalgeographic.com/animals/arti...
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
Video
Video
Optimal foraging theory has been used to understand the foraging choices of animals but is rarely applied to large predatory fishes due to difficulties measuring their behavior in the wild. Great hamm...
Marine Biology - Large, mobile predators may act as spatiotemporal drivers of ecosystem processes by using diverse habitats and resource pools. Movement is a critical component of the role...
The great hammerhead (Sphyrna mokarran) is listed as Critically Endangered by the IUCN Red List and is one of the most iconic shark species worldwide. Despite its emblematic status, there are major…
Electric rays are staying out of the stomachs of sharks by shocking them—with up to 200 volts.
joeymaier 🌊
Johann Mourier
Johann Mourier
joeymaier 🌊
David Shiffman, Ph.D. 🦈
David Shiffman, Ph.D. 🦈
🦈 #shark
New research paper from @dr-yannis.bsky.social uses biologging & diver observations as evidence that #torpedorays can repel #whiteshark & #tigershark predators by using their electric shock abilities. These #electricrays use shorter discharges for defense.
share.google/wYDvmpOn2Kda...
🦈 #shark
New research paper from @dr-yannis.bsky.social uses biologging & diver observations as evidence that #torpedorays can repel #whiteshark & #tigershark predators by using their electric shock abilities. These #electricrays use shorter discharges for defense.
share.google/wYDvmpOn2Kda...
Torpedo rays can produce electric organ discharges (EODs) which they use to stun prey. Here we show they can also use this for defensive purposes to repel large sharks including tiger and white shark....
Torpedo rays can produce electric organ discharges (EODs) which they use to stun prey. Here we show they can also use this for defensive purposes to repel large sharks including tiger and white shark....
