200-year-old Aldabra sea turtle delays aging and attracts people's attention!
Galapagos Islands and Seychelles giant sea turtle live for more than a hundred years. They continue to grow, even if they grow old and escape extinction by maintaining fertility!
Aging and death are inevitable, even if a person lives in a safe society, how much medicine has developed. However, some reptiles , such as humans, as well as other mammals and birds, cannot escape the fate of aging!
Rita da Silva of Denmark's Southern University and other researchers used the International Animal Information Management System (ZIMS) to collect a large amount of information from zoos around the world, not only making turtles in zoos and aquariums live longer, but most of them aging slower, even stop or reverse aging. revealed in a published paper.
Researchers analyzed data on 52 species of sea turtles and about 26,000 species of sea turtles, but 75% of the species surveyed aging was very slow, and 80% of the turtles aged slower than humans. "Unlike previous aging theories, sea turtles in many species delay aging, and even turn off the switch completely," Lita da Silva said in a news material at the university, saying that "aging is not the fate of all living things."
In evolutionary biology, aging that occurs after sexual maturity is described as a conflicting relationship between body recovery and reproduction. They decided whether to spend their energy on restoring cell and tissue damage or to devote their energy to leaving genes to the reproduction of the next generation.
Aldabra elephant tortoise is a long-lived sea turtle. It was discovered that he lived in his 200s.
Most animals stop growing after sexual maturity, their physical functions decline, and eventually die. However, the researchers analyzed that turtles continue to invest energy after sexual maturity to compensate for cell damage, which seems to delay or avoid aging. Many turtles continue to grow for generations, with males getting bigger as they age, and females may lay more eggs.
The Aldabra turtle, which lives in the Seychelles in the Indian Ocean, is a long-lived turtle that lives to over 100 years old, and some live to 200 years old, but the study found that the aging rate (the increase in death with age) is 0.
Hamilton Game has a significantly lower mortality rate than when he was young.
Hamilton turtles living in Southeast Asia found in the survey that their aging rate showed negative growth. The older you are, the lower the mortality rate will be, let alone aging. The females of Greek sea turtles also recorded negative aging rates. This turtle is distributed along the Mediterranean coast, also known as the long-lived turtle, and is far older than 100 years old.
Just because aging stops, the aging rate becomes negative, does not mean that these turtles will live forever. Professor Fernando Colcello, one of the paper’s lead authors, said, “Just because turtles rarely age or regress does not mean they will live forever”, which means that the probability of death does not increase with age. In other words, they are destined to die of illness.
These long-lived sea turtles are on the verge of disappearing from the earth, before the secret of suppressing aging is revealed. The Aldabra tortoise, the Hamilton turtle and the Greek Likugame are all listed as internationally endangered species for overfishing and poaching.
Age rate of male aging in Rikugame in Egypt is much lower than that of females. Studies have found that male turtles age slowly and live longer than females.
Researchers analyzed long-term studies of 77 warming animals, including wild turtles, but the aging rate of wild turtles is more than 20% lower than that of mammals and half that of birds and humans. In addition, the aging rate of reptile lizard (Tuatara), endemic to , New Zealand, is as high as 90% of sea turtles, with an average lifespan of 137 years.
In the mid-19th century, life expectancy for 40-year-olds doubled, and now it is 81 years old.However, this is mainly due to the decline in infant mortality and improved living conditions, and the rapidly increasing mortality rate does not change much as the ageing rate increases. Therefore, how warming animals, such as long-lived sea turtles, lizards and crocodiles suppress aging has attracted people's attention.
