Scientists in Europe said Tuesday they've successfully transferred a test tube rhino embryo back into a female whose eggs were fertilized in vitro, as part of an effort to save another nearly extinct sub-species of the giant horned mammal.
The procedure was performed last month on a southern white rhino at Chorzow zoo in Poland, said Thomas Hildebrandt of the Leibniz Institute for Zoo and Wildlife Research in Berlin.
Hildebrandt is part of BioRescue, an international team of scientists and conservationists trying to use IVF to save the rare northern white rhino.
FILE - In this Wednesday, Feb. 13, 2019 file photo, a team of experts harvest eggs from a female southern white rhino, 17-year-old Hope, at a zoo park in Chorzow, Poland. Scientists in Europe said Tuesday June 25, 2019, they have successfully transferred a test tube rhino embryo back into the female whose eggs were fertilized in vitro, as part of an effort to save another nearly extinct sub-species of the giant horned mammal. (AP PhotoPetr David Josek, File)
Only two northern white rhinos — both females — are left. The last male northern white rhino, named Sudan, died in March 2018. Scientists had preserved frozen sperm samples from several males that they now hope to use to revive the species.
Scientists chose to test the IVF transfer on southern white rhinos, a closely related sub-species whose numbers have stabilized in the wild.
"This is the first positive proof that the entire procedure we've developed in theory can be successful," Hildebrandt told reporters in Berlin.
But time is running out.
The BioRescue team is waiting for permission from the Kenyan government to harvest eggs from the last two surviving female northern white rhinos, a mother and daughter called Najin and Fatu. They are unable to bear offspring themselves, so once the embryos are fertilized in the lab they would be implanted in a southern white rhino surrogate mother.
Kenya's ambassador in Germany, Joseph Magutt, said his country supports the effort, but didn't say how long it would take to clear the paperwork.
Hildebrandt cautioned that while ultrasound tests show the embryo transferred at Chorzow zoo has grown, it's smaller than expected and it remains to be seen whether it will implant in the mother's uterine lining and result in a pregnancy.
"There are a lot of technical problems that will be solved, but it will take time," said Cesare Galli, whose Italy-based company Avantea specializes in artificial reproduction of horses.
The German government announced Tuesday that it is supporting the project with 4 million euros ($4.6 million) funding.
In the meantime, others in the BioRescue team are working on ways to turn preserved skin cells from deceased rhinos into eggs or sperm, a procedure that's so far only been performed with mice.
Rhinos have long been under pressure from poachers because of their horns, and several sub-species are at risk of extinction. Conservationists say rhinos are important for the survival of many other species because of the role they play in landscaping their native habitat.
Earlier this week, five eastern black rhinos were transported from European zoos to Rwanda's Akagera National Park to help increase the genetic diversity of the rhino population there.
More broadly, a recent United Nations report warned that a million species are at risk of extinction in the coming decades, largely because of human activity.
PARIS (AP) — French President Emmanuel Macron warned Thursday that Europe could “die” if it fails to build its own robust defense as Russia’s war in Ukraine rages on, or if it fails to undertake major trade and economic reforms to compete with China and the U.S.
Macron urged Europeans to become more ambitious in a fast-changing world to face the challenges of war, fierce trade competition, energy scarcity, climate change and increasing authoritarianism.
In a nearly two-hour speech at Sorbonne University in Paris, Macron said that the continent is divided and “too slow and lacks ambition” at a time when the 27-member European Union needs to become a superpower, defend its own borders and speak with one voice if it wants to survive and thrive.
“Our Europe today is mortal,” Macron said. “It can die and that depends solely on our choices,” he added. He called on people to make those choices now because, “it’s today that Europe is between war and peace.”
Russia's full-scale invasion of Ukraine, now in its third year, is an existential threat and Europe isn't armed enough to defend itself when “confronted by a power like Russia that has no inhibitions, no limits,” Macron said.
‘Our ability to ensure our security is at stake," Macron said. “Russia mustn’t be allowed to win.”
Europe now has the “good fortune” of having the Biden administration’s commitment to supporting Ukraine, Macron said. But, in a year of key elections around Europe, in the U.S. and elsewhere, support may fragment or disappear entirely, he added.
“Europe must become capable of defending its interests, with its allies by our side whenever they are willing, and alone if necessary,” Macron said.
Strong armies, a European rapid intervention program and force, tanks, a missile shield and other weapons, produced in Europe, will need the support of “a joint diplomatic force that will speak with one voice and build bridges with Africa and Latin America,” the French leader said.
“Only then will Europe show that it's not a United States’ lap dog, and that it also knows how to talk to other regions of the world,” he said.
France has been a firm supporter of Ukraine in its fight against Russian aggression, and Macron has often clashed with other Western leaders as he has insisted that Europe must stand by the country at any cost. The French president alarmed European leaders by saying recently that sending Western troops into Ukraine to shore up its defenses shouldn’t be ruled out.
Referring to trade practices of China and the U.S., Macron said “the two world powers have decided not to respect the rules of global trade” by shoring up protections and subsides while Europe’s industry remains open and is stuck in overregulation.
“Let’s do the same, we are in competition,” Macron said.
“We must buy faster, we must produce more and we must buy more that is made in Europe. That is key,” Macron said.
Thursday's speech came less than two months before a pivotal European Parliament election.
Macron, an avid advocate of a united and assertive Europe, also rallied support for his centrist Renaissance party before the June 6-9 vote as far-right parties lead the moderate coalitions in the polls. He called for safeguarding democratic values as the “authoritarian model” was becoming “more popular” across the continent.
The war in Ukraine and immigration are top priorities for European Union voters, according to polls. Far-right parties have gained support by criticizing Macron’s government policies on both issues. Macron acknowledged divisions on immigration policies, including on asylum and deportation rules for those who have arrived to Europe illegally.
He emphasized the need for an effective response and Europe-wide coordination for curbing illegal immigration, closer cooperation with immigrants' countries of origin and a unified, relentless fight against human traffickers.
Macron criticized the idea of striking an agreement, as Britain as done, with countries in Africa and elsewhere to transfer immigrants there.
“This is a betrayal of our values that ultimately leads us to dependency on other counties,” Macron said.
The British government earlier this week approved a law allowing the deportation of some migrants who enter the country illegally to Rwanda.
Macron lost his majority in France’s most influential house of parliament, the National Assembly, after the 2022 election to the far-left coalition and the far-right National Rally party.
The social situation in France remains tense as Paris prepares to host the Olympic Games this summer, amid protests from teachers and police officers, and farmer demonstrations in recent weeks. The protests follow huge rallies last year against Macron’s ultimately successful proposal to increase the retirement age from 62 to 64.
Barbara Surk reported from Nice, France. Lorne Cook contributed to this report from Brussels.
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron arrives to deliver a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron delivers a speech on Europe in the amphitheater of the Sorbonne University, Thursday, April 25 in Paris. 2024. French President Emmanuel Macron will outline his vision for Europe as a more assertive global power at the backdrop of war in Ukraine, security, and economic challenges in a speech ahead of pivotal election for the European Parliament in June. (Christophe Petit Tesson, Pool via AP)
French President Emmanuel Macron speaks during a media conference at an EU summit in Brussels, Thursday, April 18, 2024. European Union leaders on Wednesday debated a new "European Competitiveness Deal" aimed at helping the 27-nation bloc close the gap with Chinese and American rivals amid fears the region's industries will otherwise be left behind for good. (AP Photo/Omar Havana)
