People always say that time flies, but do you know that flies also know time? Flying is the same word as flies in English. ) Scientists have found that although the brain of a small insect, Drosophila melanogaster, is only one-millionth the size of a human brain, it can also distinguish between afternoon and afternoon.
Scientists allowed fruit flies to smell different scents (mint and mushroom) at different times of the day (morning and afternoon). Scientists then placed fruit flies in a Y-shaped container with mint-and mushroom-flavored paper on each arm of the Y-shaped container. It was found that in the morning, fruit flies would fly to the end where they normally smell in the morning, and in the afternoon, they would fly to the end where they normally smell in the afternoon. On the third day, scientists also found that fruit flies preferred one of the odors.
Before the experiment, scientists had done similar experiments with mice and bees, using spouses or food instead of smells. This experiment on fruit flies is just a sudden flash of inspiration from scientists.
Further experiments show that Drosophila flies do not simply rely on the calculation of time to distinguish the change of time. On the contrary, their sense of time depends on their biological clock. Scientists at the Rudolph Firsault Center in Germany said: “Even drosophila, a creature with only a tiny brain, can recognize changes in time, which means that most animals can recognize changes in time. Although previous experiments have shown that mice and bees also have the ability to distinguish time changes, Drosophila’s ability to distinguish time is more fundamental.
The study showed that Drosophila can only recognize time changes for more than four hours, and if it stays bright all day, Drosophila will also be unable to recognize time. The experiment also showed that Drosophila can use time as a clue when looking for food. The next step for scientists is to explore the mechanism of time discrimination in drosophila. It is believed that with the help of powerful modern tools, people can conduct a comprehensive study of the brain of Drosophila and find out the reasons for time discrimination in drosophila.