First identification of a Mosasaur Premaxilla in Japan
Reports and Proceedings
Updates every hour. Last Updated: 25-Oct-2026 16:15 ET (25-Oct-2026 20:15 GMT/UTC)
A long-held theory suggests that the asteroid strike that killed off non-avian dinosaurs — and most large marine predators — 66 million years ago created an ecological opportunity that spurred the rapid evolution of tunas, and other large, fast, and warm-blooded predators.
The idea is that tunas and their carnivorous counterparts filled a niche left by their massive, predatory predecessors, much like how mammals replaced the world’s non-avian dinosaurs after the K-Pg extinction event.
But that theory doesn’t quite hold water, according to a new Yale study that provides new insights into how these economically important fishes evolved their imposing size, speed, and ability to regulate their body temperatures in cold seas.
Researchers from the University of Osaka found that localization of the CLK1 kinase to nuclear stress bodies during thermal stress and recovery is regulated by PP1-mediated dephosphorylation and RIOK2-mediated rephosphorylation. This mechanism, which controls pre-mRNA splicing under stress conditions, could provide new insight into stress-related diseases.
Wildlife protection frameworks in both the EU and the UK need stronger and more consistent implementation – and must recognise animals as “individuals capable of experiencing suffering”, rather than mere ecological assets.