How many years can a turtle live?

Usually 175 or over 300 years old. Relevant data show that: "its natural life span is generally 150 years", "according to relevant research, it has exceeded 300 years, and some even exceeded 1,000 years." What is the secret of tortoise's longevity? Scientists have found that turtles not only have a slow metabolism, but also can slow down their physiological rhythm and enter a state of suspended animation. Cell research has found that the generation of animal fibroblasts is directly proportional to the life span of animals. Turtles have slow cell differentiation and many times of reproduction. Its fibroblasts can reach125th generation in vitro, while human fibroblasts can only reach 50 generations. There are conflicting reports. Report 1: Xinhua News Agency 165438+ 10/5, Brisbane Zoo in Australia held a grand birthday party for a turtle 175 years old. This female turtle named Harriet is the oldest animal in the world. Darwin brought it back to England when he visited the Galapagos Islands in western Ecuador. After that, he was taken to Australia. The picture shows Harriet and the turtle-shaped cake prepared for her by the zoo. Report 2: Now, scientists have studied the living habits and physiological functions of turtles, and solved the mystery of their longevity: 1) According to the observation and research of zoologists and turtle experts, it is found that turtles who eat plants generally live longer than those who eat meat and omnivores. For example, domestic turtles living on tropical islands in the Pacific Ocean and the Indian Ocean feed on grass, wild fruits and cacti, and have a particularly long life span of 300 years. 2) Turtles have distinctive body structure and physiological functions. The tortoise has a hard shell, so that its head, abdomen, limbs and tail can protect itself from the outside world. At the same time, turtles also have the habit of sleepiness, sleeping about 10 months a year, hibernating and sleeping in summer, so their metabolism is slow and their energy consumption is little. 3) According to the research of scientists, there is a clock about cell division in human and animal cells, which limits the algebra of cell reproduction and its life span. When human embryonic lung fibroblasts are cultured for 50 generations in vitro, it is difficult to continue, while turtles can reach 1 10 generation, which shows that the generation of turtle cells is closely related to the life span of turtles. 4) Zoologists and medical scientists examined the heart function of turtles. The turtle's heart can beat for 24 hours after being taken out of the body, which shows that the turtle's heart function is very strong and plays an important role in the turtle's life. 5) Scientists believe that the life span of turtles is also related to the way they breathe. Turtles have no intercostal muscles, so when breathing, they have to move up and down under their mouths, suck air into their mouths and send it to their lungs. It is also because when it breathes, its head and feet stretch and its lungs suck one by one. This special breathing action is also the reason why turtles can live a long life. Scientists also believe that turtles are excellent animal models for studying human life span. Therefore, further revealing the mystery of longevity of turtles will have important implications for the study of human health and longevity.