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Various scientific efforts to preserve animal species threatened by human error are effective. It's a chance that we are given drugs and medicines, but it is very late that we have the opportunity to survive the extinction crisis with the power of science peak.
A team of international scientists led by Dr. Thomas Hildebrand, a liberal reproductive scientist at the Free University of Berlin, said Thursday that the last "Sudan" male is dead, leaving only two females with "functional extinction" Successfully produced the northern white rhinoceros embryo, which was hit by a bomb, in the latest issue of Nature Communications.
A hybrid embryo obtained by injecting frozen sperm from a northern white rhinoceros into the southern white rhinoceros ovum of a cousin is not a complete northern white rhinoceros .
Four mixed embryos will be implanted in the uterus of the southern white rhinoceros. If the results are conclusive, the Kenyan authorities plan to restore a pure white rhino from the north by collecting eggs from the northern white rhinoceros "Ohnjin" and "Patu" protected in the Al-Pezeta area in the national park. Raikipia.
This process will probably take at least three years.
The researchers also conclude that the use of frozen sperm from four northern white rhinos only affects the risk of extinction even if they are successfully restored because of consanguinity due to consanguinity.
For this reason, the possibility of using induced pluripotent stem cell technology (iPS cells) is under study. The technology has turned the cells into white cells and turned them into cells of choice, and it has been reported that 12 northern white rhinoceros skin cells stored at the San Diego Zoo can already turn iPS cells into oocytes or spermatozoa .
Rhinos are endangered as they become the target of poachers targeting horns used for medicinal purposes other than habitat destruction and climate change. At the beginning of the year 2011, the black rhinos of West Africa have disappeared in the wild and there is no way to restore them.
Koala, who is suffering from being attacked by dogs in Australia and injuring habitats with frequent fires, should also benefit from science.
Koala currently lives in protected areas, reaching 330,000, Compared to the number of Europeans who had reached 10 million in 1788 before migration, it was drastically reduced. The koala experienced a sharp decline in the number of fur huntings and a pet for the 1870s.
The biggest threat to the current koala is blindness and chlamydia, a type of badually transmitted disease that causes infertility.
More than 50 scientists from 7 countries participated in the badysis of koalas in seven countries, with frequent fires and developments due to global warming, eucalyptus feeding, habitat deterioration and the spread of chlamydia.
Rebecca Johnson, a researcher at the Australian Museum, who published the results of the Koala gene badysis in the journal Nature, said, "Through this genetic badysis, we can understand the immune genes koalas for the first time. They could use it to develop vaccines and improve breeding programs.
(Seoul = Yonhap News)
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