There are so many summer cicadas, why is this?Worm experts let you know

The Yangtze River Daily Da Wuhan Client August 2 (Reporter Tian Qiaoping Correspondent Li Junyi) On the evening of July 29, a community on the 29th floor of A community in GEM, one learned to stay on the north -directional glass window of Ms. Peng's Ma'anshan Forest Park tweet. "My house is nearly 100 meters from the ground, how did it fly up? It's rare!"

Ms. Chen's home is in a large community in Huaqiao, Hankou. On the north balcony on the 11th floor of her house, a small money orange has known a few days in a row, and I know to "sing" every day. This is the past 18 years since Ms. Chen has lived in this house.

I know the scientific name is cicada. Some citizens' calls from the window and their own encounters have concluded that "know more than previous years", and some people infer that this year's knowledge is mostly related to global warming. The reporter from the Yangtze River Daily interviewed Zhou Xingmiao, an associate professor of the School of Botanical Science and Technology of Huazhong Agricultural University who specializes in "governing insects" about cicada.

"I also feel that there are so many cicadas this year."

"I also feel that there are many cicadas this year, but this year's cicada was not born this year, it was breeding 3 to 7 years ago. To say more, it is also the increase of 3 to 7 years ago." Associate Professor Zhou Xingmiao was from Central China from Central China. The cicadas of the towering trees on the campus of Agricultural University felt different this year, "more and neat".

But is it more or less cicadas in Wuhan than in previous years? "This requires observation research," said Associate Professor Zhou Xingmiao. "This kind of research needs to be selected for a region for several years of observation and comparison." But this kind of related research has not received much attention from scientific researchers. First, because of the relevant related to the relevant, it is because of the relevant related to the relevant. Scientific research funds are not easy to obtain support, and the second is because cicadas are neither an insect or a wider puppet. Although the cicada molting medicine is recorded in ancient Chinese books, it can meet the needs as long as it is collected in the seasons of the cicada. Therefore, humans have less detailed research history of various cicadas.

After asking questions from the reporter of the Yangtze River Daily, Zhou Xingmiao went to study the main category of Wuhan Chan. It took two days, he found that the types of Wuhan cicadas were mainly 蟪蛄, Mongolian cold cicada (蛁蟟), Mingming cicada (spots of wings), and black cicada.

"The cicada that comes out this year is not related to the abnormal high temperature."

It has not entered this year, and high -temperature warnings have been issued in multiple regions across the country. Is the abnormal high temperature this summer that causes a lot of cicada? Associate Professor Zhou Xingmiao who studied insects told the Yangtze River Daily that there were not many cicadas this year, which has nothing to do with this year's high temperature duration and high temperature.

"This should start with the life cycle of the cicada." Associate Professor Zhou Xingmiao introduced that the life cycle of the cicada includes eggs, nymphs (popular larvae) and adults. Cicada produced eggs in small branches in July and August, and did not hatch until April and May of the following year. The fastest is generally incubation in October in the first year. The incubated nymph fell to the ground, drilled into the soil, and survived by the juice of the root of the plant. In the following year, the development of nymphs is generally not available to adults. The existing documents believe that it takes at least 3 years in China to turn into a feather into adults. Some people think that some cicadas are also available for two years, but they do not have a complete scientific research papers support. After the cicada's nymph drills out of the ground, the feather turns into adults, and after completing the mission of breeding offspring.

Different types of cicadas have different life cycles. The existing documents believe that cicadas in Mainland China are 3 to 7 years. At present, the longest cicada on the earth is 17 years. "The cicadas came out of Wuhan this year were actually breeding 3 to 7 years ago. It may be 3 years, or it may be 5, 6, and 7 years. Some years in the past may be due to climate and environmental reasons. The amount of incubation is relatively large, and it looks like this year comes out, which has little to do with this year's high temperature abnormality. "

"The tweet in the sun is singing"

Most insects need to go through the four stages of eggs, larvae, pupae, and adults, but there are only three eggs, larvae, and adults. "Therefore, cicadas are incomplete perverts in the insect family."

Associate Professor Zhou Xingmiao took students to observe the process of drilling from the ground at night. The process that lasts for several hours must be when no one is disturbed in the middle of the night. A cicada's nymph drilled out of the ground, like wearing a transparent tights. The cicada touched the tights from the back of the head from the back of the head by adjusting the pressure of the blood in the body, and then struggled to drill out. The wings just opened slowly open, or milky or pale green, very beautiful. As soon as the wings are mature, the wings become dark brown or transparent.

From the ground to the sun, the only task is to reproduce offspring. The male cicada uses a high -pitched singing to attract the spouse, and the female cicada does not call. Different types of male cicadas are also different. After receiving the signal, the quiet female cicada made a sound of "I willing" to express "I am willing."

When the male cicada completes the ending with the female cicada, it will die, and the cicada chorus that humans hear less. The female cicada will die after spawning in a week or weeks. Associate Professor Zhou Xingmiao said: "The cicada of summer is the singing of their lives."

"It uses 'needles' to eat, don't bite people"

"Cicada does not carry the risk of human infection with humans." There were more cicadas, and the cicada came to their own balcony or house. Some people inevitably worried about these uncomfortable guests flying in the wild. Associate Professor Zhou Xingmiao said that this is how much it is.

Associate Professor Zhou Xingmiao told the reporter from the Yangtze River Daily that after the cicada entered the ground, inserted into the root of the tree with a needle -shaped port, and the juice of the root of the tree was inserted to the ground. "They use 'needles' to eat, do not bite people, and do not intersect with others." Mosquito also has a needle -shaped portion. It uses this "needle" to suck human blood and spread malaria. Eat with "needle", but cicada and mosquitoes are completely different.

Cicada does not picky eaters, and the trees that can be eaten include willow, poplar, cherry blossoms, maple poplars, osmanthus, camphor, Xixi, mulberry, locust, magnolia, Guangyullan, Suzuki, Begonia, peach, stinky, virginity, winter green, etc. These tree species are also common green plants in Wuhan community and streets, providing homes underground and ground to the homeland.

【Edit: Ding】

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