The International Union for Conservation of Nature (IUCN) reported during its annual red list update on Saturday in Marseille, France, that despite global improvement at the species level, the number of species at high risk continues to grow.
The organization said many regional tuna populations remain severely depleted. For example, bluefin tuna continue to be overfished in the Indian Ocean.
Its update also included a reassessment of the world’s shark and ray species, which shows that 37% of these species are now facing extinction. According to IUCN, all endangered shark and ray species are overfished, with 31% of them affected by habitat loss and degradation and 10% also by climate change.
“We observe striking similarities between shark and lightning statistics and recent plant estimates: approximately 2 out of 5 are threatened with extinction and habitat loss and degradation poses more immediate threats than climate change,” he said Dr. Eimear Nic Lughadha, conservation scientist. at the Royal Botanic Gardens, Kew.
In addition, the Komodo dragon, the world’s largest lizard, is now considered endangered due to significant habitat loss due to ongoing human activities and climate change, the IUCN.
The four tuna species include Atlantic bluefin tuna, which went from “endangered” to “less worrying”, southern bluefin tuna, which went from “critically endangered” to “endangered” tuna alacor and yellow fin, both “almost threatened” by “less worry.”
“Tuna species migrate through thousands of miles, so it’s also key to coordinate their management globally,” Collette said.