Question 2: How do fireflies shine? The luminous principle of fireflies is that there is a phosphorus-containing luminescent substance and a catalytic enzyme in its luminous part. Fireflies have some air holes in their luminous bodies. After air is introduced from the pores, luminescent substances will be oxidized by oxygen through the catalysis of enzymes. And then emits light through this mechanism.
Fireflies glow through this effect. The light emitted in this way is called cold light, because most of the energy is converted into light energy and only a small part is converted into heat energy. Because the conversion between luminescence and light energy is quite efficient, fireflies can glow for a long time. The firefly itself can also control whether it does this to control whether it shines.
The structure of the light emitter also makes the glow of fireflies brighter. The luminous organ of fireflies consists of several layers of cells. There are luminescent cells under the skin, and there are reflective cells under the luminescent cells, which can reflect the light emitted by the luminescent cells and make the light look brighter. Well, isn't it amazing? If you want to know more about the luminous principle of fireflies, please click here to visit, and you will certainly have a deeper harvest!
Question 3: How do fireflies feed? ■ Terrestrial fireflies
Larval food: snails, slugs, earthworms, etc.
After the larvae find the prey, they first inject anesthetic substances into the prey through the hollow sickle-shaped jaw, and then inject digestive juice after the prey is anesthetized, so that the tissues of the prey form minced meat, which is then inhaled into the mouth; It takes an average of one or two days for larvae to leave their prey.
At this point, if the prey is a snail, only an empty shell remains; If it's a slug or an earthworm, there's only debris left.
■ Aquatic fireflies
Larvae of aquatic fireflies usually feed on snails and shellfish in water or small aquatic insects.
Predation patterns are similar to terrestrial fireflies. According to their habitat, they can be divided into still water and flowing water:
Species of still water prey on snails;
Flowing water species inhabit places where rivers flow slowly.
Most fireflies don't prey in adulthood,
Only suck nectar, pollen or dew, and a few species will eat small insects.
Question 4: What do fireflies look like? They are small and have wings behind them, just like little black bugs. At night, the back of the tail will light up. You can't see fireflies shining until it's dark. It likes to be near the water in summer, but it doesn't like it in autumn.
Question 5: What are the life habits of fireflies? In the summer evening, people can often see fireflies flying around in twos and threes in the trees and by the river. Green light is up and down, flickering, fast and slow, just like stars falling from the sky.
The ancients in our country called this small insect that can emit fluorescence "night light". Because fireflies fly like a small lantern, the ancient Greeks gave it a beautiful name "Ranpilu", which means "a poetic soul walking at night with lanterns". There was a poor and studious Che Yin in the Jin Dynasty in China. He loved reading since he was a child, but his family was too poor to light a lamp. So he made a small bag out of thin gauze and caught fireflies and put them in. In the evening, he studied hard with sparkling fluorescence. This is the story of "Che Yin Capsule Firefly".
Fireflies are cute. When residents of the West Indies walk barefoot in the jungle at night, they often tie a big and bright firefly to their toes to illuminate the way forward. Girls in Brazil tie these beautiful "little lights" in their hair like flowers; There is a firefly festival in Japan. On that day, many people rowed on the lake. In laughter, they put fireflies in cages to compete with the stars.
In the caves in the south of China, people sometimes see the moving sight of fireflies shining. In the dome of the cave, millions of fireflies emit silk threads as bright as gold and silver. If the person who walks into the cave speaks too loudly, or taps the wall of the cave a few times to disturb the fireflies, the light will disappear in an instant, just like the switch is turned off. After a pause, the danger passed, and fireflies lit up their little lights one after another, just like the city lit up thousands of lights at night, and the whole ceiling was soon lit up.
There are about 1500 species of fireflies, and the light they emit is different: light green, light yellow, orange yellow and light blue. Some emit short light yellow light three times in a row, while others emit orange light five times with an interval of 2 ~ 10 second. Fireflies in the West Indies can emit very strong light. 1898, when the American army was fighting in Cuba, the famous doctor gogas suddenly went out while operating on the wounded. As a result, he successfully completed the operation with the light of a bottle of fireflies. It is estimated that the intensity of light emitted by 37 ~ 38 fireflies is about equal to the brightness of light emitted by a candle.
Fireflies in Jamaica are brightly lit. When they gather on palm trees, the whole tree seems to be submerged in a sea of fire. Male fireflies gathered in mangroves along the river in Thailand flicker 120 times per minute. Qian Qian shines together and goes out together. The boat is rowing on the river. It's like being struck by lightning. One minute it was dark around, and the next minute it was as bright as day.
Scientists have revealed the mystery of fireflies' luminescence through research. It turns out that there is a luminous body at the tail of the firefly, and the fluorescein in it will emit fluorescence when it is oxidized under the catalysis of luciferase. Different proportions of fluorescein and luciferase lead to different colors. The different amount of oxygen entering the emitter will make the dim light brightness different. The luminous organ of female fireflies is located in the rear three segments of the abdomen, and the luminous part is slightly larger. The first two paragraphs are broadband, and there are two dots in the back 1 paragraph.
The luminous part of male fireflies is very small, and there are only two small ideas at the end of their tails.
Fireflies glow at night, but do they also glow during the day? You can do an experiment: in the dark, fireflies glow; At this time, a beam of extremely thin light shines on the eyes of fireflies, and in an instant, the "light" of fireflies goes out. It can be seen that fireflies don't shine during the day.
Why do fireflies glow? In fact, this is a "dialogue" between them. The secret was discovered by Dr Lauder, a zoologist at the University of Florida. Dr Lauder is an expert on insect behavior. He has been studying the luminous phenomenon of fireflies for 18 years, and has traveled all over the world with fireflies.
Dr Lauder found that male and female fireflies of the same species can communicate with each other by flashing light. There is a female firefly that emits "light, light, light" at very precise intervals. Extinction "signal, which tells the male firefly:" I am here. After learning this signal, the male firefly will reply with the flash of "turn off the light, turn off the light": "I'm coming." And fly to the female firefly at the same time. They used this "flash language" to keep in touch until they met.
If you don't believe me, you might as well try it in a rural area on a summer night: the flashlight flickers on and off, and after the male firefly receives the flashing signal. Maybe I will really fly to your side to "keep an appointment"!
English night fireflies, only females can shine ... >>
Question 6: What do fireflies look like? There are more than 2,000 species of fireflies in the world, most of which appear in rivers, ponds and farmland in summer, and their range of activities generally does not leave the water source.
Fireflies are characterized by long and flat bodies, soft walls and sheathed wings. The back plate of the chest is flat and often covers the head. Small head. The eyes are hemispherical, and the eyes of males are often larger than those of females. The abdomen has 7~8 segments, and there is a luminous body below the end, which can emit yellow and green light.
Fireflies are active at night. Eggs, larvae and pupae often glow, and the glow of adults can attract the opposite sex. Larvae prey on snails and small insects, and like to live in moist and warm places with rich vegetation.
Question 7: What kind of environment is suitable for fireflies to grow? It is sunny in summer, because fireflies come out to mate at this time.
There are about 2000 species in the world, distributed in tropical, subtropical and temperate regions. There are about 54 species in China. They like to live in humid and warm places with rich vegetation.