Friday, 18 October, 2019

In vitro fertilization might save endangered rhinos

Enlarge this image Enlarge this image
Patty Aguilar | 07 July, 2018, 00:59

A team of worldwide scientists have managed to extract stem cell lines from southern white rhino embryos, a closely related subspecies to the northern white rhino, to develop hybrid rhino embryos, or "test-tube rhinos", reports CNN.

"We thought, 'The story's over, '" said Dr Hildebrandt, a wildlife reproductive biologist at the Leibniz Institute for Zoo and Wildlife Research and the Free University of Berlin.

To create the lab-grown embryo, researchers used thawed sperm from previously frozen northern white rhino males.

Now that Professor Hildebrandt and his team have perfected the technique for egg retrieval from rhinos, they have started work to produce a pure northern white rhino embryo.

This could provide a way of "rescuing valuable genes" from a sub-species that is already functionally extinct; the last male northern white rhino, named Sudan, died earlier this year at the age of 45. A death that practically meant the extinction of the species, of which only two females remain, namely, Najin, the daughter of Sudan, and Fatu, its granddaughter.

"Our results indicate that (assisted reproduction techniques) could be a viable strategy to resuce genes from the iconic, nearly extinct, northern white rhinoceros and may also have broader impact if applied with similar success to other endangered large mammalian species", according to the paper, published this week in the journal Nature Communications.

Fatu is one of two remaining northern white rhinos, both female, who live on a nature reserve in Kenya.

Man who challenged black mom's right to be at pool loses job
The HOA also announced that it has re-instituted a sign-in sheet at the pool "to make sure no resident feels singled out again". In a Twitter post , South Carolina-based Sonoco apologized to Edwards and said the situation doesn't reflect company values.

Sounds Like Meghan Markle Has Adopted British Accent
For her first royal engagement as the Duchess of Sussex , Meghan's tights were very noticeable beneath her sheer Goat dress. It's the first time Meghan has worn a bright colour on an engagement with Harry since their marriage in May.

South Korean Basketballers Arrive in North to Mix Sports, Diplomacy
Trump insisted the talks are moving "very quickly" and that he believed North Korea is serious about total denuclearization. North Korean leader Kim Jong-un has visited the special economic zone of Sinuiju. on the North Korean border with China.

The NWR can only reproduce in the zoos very slowly. In years to come, there will finally be few true breed northern white rhino calves once again, saving the entire species from the brink of extinction.

This was done while the female southern white rhino was under general anaesthetic, but the process is still very risky.

It may not look much now, but this blastocyst is a major step in the battle to save the northern white rhino.

The resulting egg was fertilized by sperm, taken earlier from Sudan and stored frozen. The procedure had never been attempted among northern and southern white rhinos, according to the study.

In total, Hildebrandt and his colleagues created four hybrid embryo, the Northern white Rhino - two males and two females. Several embryos are now cryopreserved for future transfer into surrogate mothers to carry a pregnancy to term. The goal of simply preserving the subspecies' genes in a new hybrid rhino (in captivity), and whether it would be worth all the effort, is unclear.

If these experiments will be completed successfully, then the scientists will remove the egg from the body of the last two representatives of this subspecies, fertilizes them and try to extract embryonic stem cells from them.

Those embryos are frozen right now and the team says that there is a high chance of establishing pregnancy once the embryos are implanted into the surrogate mother. All conservation efforts to save this species have been foiled by human activities such as poaching, civil war and habitat loss. "I do think that if there's one thing we should learn from this, it's that we shouldn't allow species to get to such a critical state that these high-tech approaches are the only ways of saving its genes". The animals were killed for their horns, a gram of which valued more than gold and served as a status symbol for many.

Recommended

Texas mom shoots man who stole SUV with kids inside Texas mom shoots man who stole SUV with kids inside While inside, a man, who was later identified as 36-year-old Rickey Wright, entered her SUV and attempted to drive away with it. Dallas police say a woman shot a man in the face as he tried to steal her sport utility vehicle with her two children inside.

China: 'We're Ready to Retaliate Against US Tariffs' China: 'We're Ready to Retaliate Against US Tariffs' The Chinese government responded quickly to the as President Donald Trump's tariffs went into effect at midnight ET on Friday. In a commentary, the state-run tabloid Global Times said that China was ready for a fight.

Thailand Cave Rescue Diver Samarn Poonan Dies After Running Out Of Oxygen Thailand Cave Rescue Diver Samarn Poonan Dies After Running Out Of Oxygen In the most recent videos a Navy SEAL is shown treating minor cuts on the feet and legs of the boys with antibiotic ointment. But families have only been able to hear from their children through footage uploaded to the Thai Navy Seal Facebook page .

Beryl becomes first hurricane of 2018 season Beryl becomes first hurricane of 2018 season The hurricane center also cautioned that because of its small size, Beryl is harder to predict with any certainty. While the storm is expected to dissipate as it nears the southern Caribbean islands, rain and winds are expects.

Total lunar eclipse expected on July 28 According to Fundamental Astronomy, a lunar eclipse occurs when the Moon passes directly behind Earth and into its shadow. NASA says the lunar eclipse will last for 1 hour and 43 minutes with total viability in Eastern Africa and Central Asia.

Pakistan court gives 10-year jail to Sharif in 1st corruption case Pakistan court gives 10-year jail to Sharif in 1st corruption case The court dismissed applications by lawyers of the defendants on Thursday seeking a seven-day delay in announcing the verdict. Maryam Nawaz and her husband stand barred from contesting the July 25 election from Lahore and Mansehra respectively.

Scott Pruitt resigns at EPA; Andrew Wheeler to take over Scott Pruitt resigns at EPA; Andrew Wheeler to take over Trump tweeted that Pruitt's deputy, the former coal lobbyist Andrew Wheeler , would take over Monday as acting head of the agency. Chief of staff John Kelly was seemingly obsessed with getting Pruitt ousted, according to EPA and White House officials.

Bill Shine White House Appointment Sparks Protests From Gretchen Carlson, Chelsea Handler Bill Shine White House Appointment Sparks Protests From Gretchen Carlson, Chelsea Handler On your marks, get set. how long till the liberal media and snowflakes start taking shots at the great Bill Shine? Shine was never personally accused of harassment, but multiple women accused him of defending the men who were.

Japan executes cult leader Shoko Asahara for 1995 subway attack Japan executes cult leader Shoko Asahara for 1995 subway attack In all, 13 cult members were sentenced to death during more than 20 years of trials , which came to an end in January 2018. Aum Shinrikyo followers chant before a portrait of guru Shoko Asahara on July 19, 1999, at Aum's Adachi office in Tokyo .

UK Poisoning: Police say Novichok may be left over March UK Poisoning: Police say Novichok may be left over March The Skripals spent weeks in critical condition after being attacked in the southwest England city of Salisbury in March. Scientists say there's no easy way to use technology to locate the container thought to be the source of the Novichok .

Trudeau denies sexually assaulting reporter in 2000 Trudeau denies sexually assaulting reporter in 2000 After removing Kent Hehr from the cabinet for similar allegations, Trudeau himself may be fighting for his political career. I'm responsible for my side of the interaction, which certainly as I said, I don't feel was in any way untoward".

Thunder just trying to figure out how to get rid of Carmelo OKC will work with Anthony's reps and evaluate options including trade, buyout and/or stretch provision, which could save the team over $100 million.

US job growth strong; unemployment rate rises to 4 per cent It was 14.5 per cent in May, but 15.5 per cent in June. "This generates a rising standard of living and strong income growth". The unemployment rate ticked up to 4% from 3.8%, but this was because more people entered the labour force looking for work.

Stop Mbappe! Uruguay's tactic v France for quarter-final Stop Mbappe! Uruguay's tactic v France for quarter-final Didn't make as spectacular an intervention as he had against Argentina, but Pavard still enhanced his reputation with a solid defensive display.

Trump says US to meet soon with Europe on trade Trump says US to meet soon with Europe on trade U.S. allies are upset with Trump after he imposed a 25 percent tariff on imported steel and a 10 percent tariff on aluminum. The country has a lot at stake in the face of USA protectionism, and this is not the first time Rutte has made that clear.