Which rodents live long and are cheap?

Among mammals, the longest-lived animal is the elephant. It is said that it can live for 60 to 70 years. Of course, wild land is different from artificial farming, and the former has a shorter life span. According to records, the long-lived elephant in Golpagos Islands can live 180 to 200 years. The oldest animal turtle in the world is Harriet, who celebrated its175th birthday on 14. I also got a pink hibiscus cake. Harriet is a giant Galapagos tortoise, born in 1830 and weighing 150kg. It is the oldest surviving tortoise shell reptile certified by Guinness World Records. Steve irwin, an Australian animal protector, said, "It must be the oldest animal in the world. I think it can definitely live to be 200 years old. " Legend has it. It used to be Darwin's pet. 1835, Darwin returned to England from the global expedition of the battleship beagle. These turtles are both his pets and his research objects, including Harriet, but historians still doubt this statement. In the past century, it was mistaken for a male turtle and was named Harry. Harriet can confirm her identity and become a female turtle named Harriet. The oldest animal in the world is the clam at the bottom of Iceland. According to the latest research results of British scientists, a kind of clam named Ming has been determined as the longest-lived animal in the world. Ming grew up on the seabed in Iceland, and the texture on its shell shows that it is now 405 years old. Scientists will further study its growth process. According to the British "Sunday Times" report, last year, scientists from the School of Marine Science of Bangor University in the United Kingdom salvaged more than 3,000 empty shells and 34 surviving Ming from the bottom of Iceland in the northern Atlantic Ocean. The length of these bright flowers is about 8.6 cm. Ming got its name from the Ming Dynasty in China, a kind of round clam mollusk, because its early growth took place in the Ming Dynasty in China. Allen Warren Michael was involved in fishing that year. He said, "So he sent them to the laboratory." Subsequently, the British charity "Help the Elderly" spent 40,000 pounds (about 80,000 US dollars) to entrust experts to study the exact age of these animals and their growth process on the seabed. Because the shells on Ming's body have 405 textures, scientists finally concluded that these animals have survived for 405 years. They are 365,438+0 years older than the oldest animals found before. Therefore, The Times quipped that in the early Ming Dynasty, under the rule of Elizabeth I, British literary master Shakespeare was writing his Merry Wives of Windsor. The texture of the shell, like the texture on the trunk shell, is not only the basis for people to determine their exact age. This also makes it a living specimen to record environmental changes. According to scientists, shells only grow in summer. When the sea water is warm and food is abundant, the texture with a thickness of about 0. 1 mm will grow on the shell every year. Because the thickness of each texture on the shell depends on the environment at that time, people can understand the ecological environment and climate change at that time on this basis. "The texture on the shell. Professor Richardson, an expert in marine biology, said, "We know that marine clams usually live for more than 200 years, and climate records are compiled into shells. Based on these data, we can establish a detailed chart of climate change in the North Atlantic. "At present, because Ming died during the research, their body parts have been taken out, and the remaining shells will continue to be used for scientific research. The mystery of longevity is still unsolved, which is limited to the current understanding of mollusks. Scientists still don't know how Ming lived under the sea for centuries. " Richard, who participated in the study, said: "The understanding of bottom clams may be limited to their taste? Farag said, "We need to find out how they keep their muscles active, prevent diseases and keep their nervous system intact for such a long time." Farag said that Ming may have lived in a quiet and safe environment for a long time. Because of this "boring" life, Ming's reproductive ability may be very poor. "Maybe his fertility declines with age," Richardson said. Although it is not easy to solve the mystery of Kaiming's longevity, a spokesman for HelpAge said that Ming's discovery provided an opportunity for human beings to explore how to keep healthy for hundreds of years. (Xinhua News Agency for this newspaper) List of longevity stars of animals and plants American foxtail pine: 4844-year-old English oak: 1000-year-old lake sturgeon: 154-year-old right whale: 130-year-old human (Jenny? Camente): 122 years old elephant: 78 years old horse: 62 years old Japanese salamander: 55 years old Galapagos tortoise: 177 years old seagull: 49 years old bat: 32 years old dog: 24 years old rabbit: 18 years old.