How Many Sumatran Rhinos Are Left In The World

How Many Sumatran Rhinos Are Left In The World – In an effort to save the endangered Sumatran rhino species, a team from the Max Delbark Center managed to grow stem cells and a tiny brain from the skin cells of Kertam, the last male Sumatran rhino in Malaysia who died in 2019. . The goal is to use these cells to create sperm for reproductive purposes.

The Sumatran rhino, the world’s smallest and oldest rhino species, was distributed throughout East and Southeast Asia. However, poaching and habitat destruction have greatly reduced the population, with only a few dozen remaining in the rainforests of Sumatra and the Indonesian region of Borneo. With the rarity of these remaining individuals, pack encounters became even rarer and the species became extinct.

How Many Sumatran Rhinos Are Left In The World

How Many Sumatran Rhinos Are Left In The World

The Sumatran rhino, the only species of rhino with hair, has been declared extinct in Malaysia since 2019 after the death of the male Kratom and a few months later, the death of the female Iman. But the group of Berlin scientists led by Dr. Vera Zeutza and Dr. Sebastian Dijk, heads of the Pluripotent Stem Cell Platform at the Max Delbrück Center in Berlin, were not satisfied. He and his international colleagues have a big goal: converting skin cells taken from now-dead Sumatran rhinos into stem cells, allowing them to obtain eggs and sperm for use in assisted reproduction. . Embryos born in the petri dish, descendants of Kertum and other humans who have died or died, are carried by surrogate rhino mothers.

Iman, Malaysia’s Last Sumatran Rhino, Dies

Shown here is a brain organ from a rhinoceros. In this micro-slice image, neuron progenitor cells are visible in red. Fully developed neurons are colored green. Credit: Silke Frahm-Barske, Max Delbrück Center

In the scientific journal iScience, the team led by first author Zywitza and last author Diecke reported their first success: They created pluripotent stem cells, or iPS cells for short, from Kertam’s skin samples. These rooms have two main advantages. First, they can divide indefinitely, so they don’t die; And second, they can transform into any type of cell in the body. For their latest research, the team has created brain organoids, called “mini-brains”, from kratom iPS cells.

The tech foundation developed its stem cell technology as part of a biorescue research project for the endangered northern white rhino – just two females remain in a Kenyan wildlife reserve. “Our current research has greatly benefited from the knowledge gained from this important project, which is funded by the German Ministry of Education and Research,” says Zywitza. Professor Thomas Hildebrand, Head of the Department of Reproduction Management at the Leibniz Institute for Zoo and Wildlife Research (IZW) in Berlin, and his research team played an important role in the project.

Zywitza explained that everyone involved in the current study was surprised and delighted to find that the same methods used to convert northern white rhino skin cells into stem cells also worked well with Sumatran rhino cells. . Under the microscope, stem cells from both rhino species are indistinguishable from human iPS cells. However, there are different types: “Unlike northern white rhino iPSCs, Kertam iPSCs cannot be grown without feeder cells, which allow growth factors to stimulate the cells. See development

Sumatran Rhinoceros, Facts And Photos

In addition to species preservation, keratomy skin-derived stem cells may serve another purpose: “iPS cells from exotic animals are a unique tool for gaining insight into the evolution of organ development,” Ziotza said. To demonstrate this, Dr. Silk Frahm-Barske, a scientist in Deck’s research group, grew brain stem cells from cells.

“To the best of our knowledge, these little brains have only been obtained from mice, humans and non-humans,” says Frahm Barske. “So we were very happy to see that the stem cells we made from the Sumatran rhino were producing human-like organoids.” However, she added, the team used human and rhino iPS cells to produce brain organoids in slightly different ways.

The next goal is to use kratom iPS cells to produce sperm suitable for fertilization. “This part is more difficult,” says Zywitza. “To obtain sperm, iPS cells must first be used to produce early germ cells, the signal for the egg and sperm.” This is the difficult task that scientists are now doing. They also plan to obtain iPS cells from other Sumatran rhinos.

How Many Sumatran Rhinos Are Left In The World

Reproduction expert Thomas Hildebrandt explains why these actions are necessary: ​​”In Indonesia, steps are being taken to restore the Sumatran rhino population by collecting remains of individuals in wildlife reserves,” he says. “But women who haven’t been pregnant for a long time often don’t, for example because of a tumor in their reproductive organs, they may be too old to have children.”

Everything You Need To Know About Sumatran Rhinos

“Although our efforts are trying to do the impossible, that is, to ensure the survival of animals that may disappear from our world, this should be normal, not illegal,” Zywitza said. “For all the talk about what we do in the lab, our contribution to saving these rhinos from extinction may be small.

Review: Vera Zeutza, Silke Frahm, Norman Krueger, Anja Weiss, Frank Görtz, Robert Hermes, Susan Holtz, Silvia Colioni, Dr. Szemacher, Cesaremi, Szemacher, “Indud Pluripotent Stem Cells and Endangered Sumatran Rhino Brain Stem Cells of extinction”. organoids” Hildebrand and Sebastian Dack, November 18, 2022,

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Astrology Physics Behavioral sciences Biochemistry Biotechnology Black hole Brain cancer Biology Biology Climate change Cosmology COVID-19 Disease DOE Ecology Energy European Space Agency Evolution Genetics of exoplanets Harvard-Smithsonian Center for Space Physics International Materials Diseases JHBL 2018 Planck Institute Medicine M IT Nanotechnology NASA Flight Space Goddard Center Neuroscience Nutrition Paleontology Particle Physics Planetary Science Planetary Popular Public Health Quantum Physics Virology Yale University Sumatran Rhino (Dicerorhinus sumatrsis), also known as the Sumatran Rhino (Dicerorhinus sumatrsis). A rare member of the family Rhinocerotidae and one of the five species of rhinoceros; This gus is the only species of Dicerorhinus. It is the smallest rhinoceros, although it is still a large mammal. It is 112 to 145 cm (44 to 57 in) long at the shoulder, with a head and body length of 2.36 to 3.18 m (7 ft 9 in to 10 ft 5 in) and a 35-foot tail. to 70 cm (14–28 inches)). Weights range from 500 to 1,000 kg (1,100 to 2,200 lb), averaging 700 to 800 kg (1,500 to 1,800 lb). Like the two African species, it has two horns. The largest horn is the nose horn, usually 15–25 cm (5.9–9.8 in), with the second horn being a stalk. The Sumatran rhino has reddish-brown fur that covers most of its body.

The Sumatran rhino previously lived in forests, swamps, and cloud forests in India, Bhutan, Bangladesh, Myanmar, Laos, Thailand, Malaysia, Indonesia, and western China, especially Sichuan.

How Many Sumatran Rhinos Are Left In The World

Now critically endangered, there are only five large populations in the wild: four on Sumatra and one on Borneo, with fewer than 80 adults.

Genetic Study Offers Good News For Endangered Sumatran Rhinoceros

The species went extinct in Malaysia in 2019 and the Sumatran population is already extinct. In 2015, researchers reported that the Bornean rhino had gone extinct in northern Borneo in Sabah, Malaysia.

The Sumatran rhino is a solitary animal except for socializing and breeding. It is the most vocal of the rhinoceros species and communicates by marking the ground with its feet, turning over plants, for example, and leaving dirt behind. The species is better studied than the isolated Javan rhino, the project led to the captivity of 40 Sumatran rhinos with the aim of protecting the species. Little is known about the techniques that aid in breeding in the open. Although many rhinos died once in different areas and no calves were born for 20 years, rhinos die in their immediate wild state.

The Indonesian Ministry of Virology began an official Sumatran rhino census in February 2019, which is scheduled to be completed within three years.

The last Malaysian bull and Sumatran rhino died in May and November 2019. The species is considered extinct in this country and

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