66-Day Fetus Of Northern White Rhino Marks A Moment Of Hope For A Species On The Brink скачать в хорошем качестве

66-Day Fetus Of Northern White Rhino Marks A Moment Of Hope For A Species On The Brink

There are just two northern white rhinos left in the world: Najin and Fatu, a mother and daughter pair. They can’t continue the species alone, but a world-first attempt was made to bring a new northern white rhino calf into the world using frozen samples, in vitro fertilization (IVF), and a surrogate southern white rhino. That surrogate was called Curra, and the successful world-first attempt at this kind of cross-species IVF was achieved by BioRescue, an initiative developing advanced reproduction technologies for saving critically endangered mammals. Jan Stejskal was one of the people who had just landed in Kenya to check on the status of her pregnancy when they received a worrying call: Curra was sick, and it was happening fast. They’d never get to check if she was pregnant, as she died within an hour of falling ill. The team would later learn that this was the devastating outcome of a chain of unfortunate events. First, there was the shift in El Niño, which caused very heavy rains. Then, those rains washed away the top layer of soil in Kenya, resurrecting mummies that had been stored in the ground for centuries. Inside those carcasses was Clostridia bacteria that can live for 500 years, and that bacteria releases an extremely powerful toxin that can kill a rhino in just 60 minutes. It was a devastating loss for the BioRescue team and even more so for the guardians who had cared for Curra and the other rhinos on the Ol Pejeta Conservancy in Kenya. There came, however, just one small glimmer of hope. During an autopsy, the team found a 66-day fetus. It was a male northern white rhino, the last seen since the death of Sudan in 2018. There was nothing that could be done to save Curra or the developing fetus inside her, but it was proof that this kind of IVF was possible – something that had never been proven before. This story of loss and hope is explored in the new National Geographic film, The Last Rhinos: A New Hope, which premieres Aug. 24 at 8/7c and streams next day on Disney+ and Hulu. Find out more: https://www.iflscience.com/ancient-ba... Video credit: The Last Rhinos: A New Hope, National Geographic