Ants began to crawl around aimlessly. When they get close to the candy you put, they will smell the sweetness and then slowly climb over. ...

This time, I wrote a short article about popular science. My observation object is a small animal-ants.

The ants we usually see are about 1-2 cm long, black or brown, with a pair of tentacles and six legs. The body is obviously divided into three parts: head, chest and abdomen.

Ants like to live in groups and walk away alone when looking for food. There are three kinds of ants in a nest: worker ants, male ants and female ants. We usually only see worker ants, whose main task is to find food. It's not easy to see females and males. You can't see the ants until they move. In the mighty ant moving team, the female ants are the ones with big bodies and wings, and the male ants are the ones with small bodies and wings. In the procession of ants moving, we can also see that there are many workers carrying white round things, that is, ant eggs.

The food that ants like to eat is sweets, such as sugar and bread crumbs. The situation of ants looking for food is very interesting. As long as you put the candy in the place where ants often haunt, wait patiently and observe carefully, you can see the whole process of ants looking for food. At first, ants crawled around aimlessly. When it is close to your sweet food, it will smell the sweetness and then crawl slowly. First, it will test the food with its legs to see if it reacts. If it doesn't respond, it will eat it and try to drag it away. If the food is too big for it to drag, it will go back along the route to call its companion, and then you can find the ant's nest by careful observation. Soon after the ants enter the nest, several ants will come out and crawl in the direction of food along the original road. On the way, some ants will turn around and meet other ants on the road. They can talk with tentacles. Soon, many ants will come out of the nest to feed.

Ants are really an interesting little animal!

First of all, the external form of ants

The ant's body is divided into three parts: head, chest and abdomen. It has six feet, thin and elastic body wall, membranous wings, hard and fragile.

Second, the growth of ants.

It takes 14 days from egg to worker ant, and it goes through two stages: larva and pupa. The egg is white or yellowish, slender, 0.5 mm in size and shaped like a grain of rice. Young ants are milky white, with thin front ends, often curved, and are easily mistaken for "ant eggs". The pupa is the last age, and the young ants become shorter and can't eat or move, which is called the pre-pupa, and the pre-pupa is the pupa after molting. Pupa is milky white at first, and then gradually turns yellow-brown. Often stacked together, it is also mistaken for "ant eggs."

The life span of ants is relatively long, and the life span of a single ant is amazing. Some worker ants can live for 7 days, and the life of queen ants can be as long as 20 years. But a wandering ant can only live for a few days This is due to the clear division of labor within the ant colony and the interdependent group structure. This is the basic factor of its reproduction.

Third, the feeding habits of ants.

Ants are divided into: lower species, carnivorous, feeding on insects, small animals and even dead animals; Stinky ant subspecies, Formicidae and higher species of Formicidae can feed on animals and plants, especially honeydew secreted by aphids and scale insects; Most other ants are herbivores, and they mostly feed on dead leaves, seeds, fruits and branches.

Polyrhachis vicina is a higher omnivorous species, which can feed rice bran, wheat bran, beans, sugars, melons and fruits, animal feed such as fish meal, silkworm chrysalis, bones, eggs, dead and live insects, etc. , or chicken feed or homemade feed.

Fourth, the physiological habits of ants.

1. Ants can grow normally in the range of 15℃ ~ 40℃, but the optimum temperature is between 25℃ and 35℃. Hibernate when it is below 10℃ in winter.

2. The soil moisture of ants should be controlled between 10% ~ 20%; The relative humidity of air should be controlled between 70% and 90%.

3. Ants are social insects and have a strong love for their nests. Most species nest underground. They eat all kinds of food, usually both plants and meat. Polyrhachis vicina, like other ants, usually takes the nest as their home. There is a queen (male ant) and one or dozens of queens (female ants) in a nest. Worker ants specialize in nesting, foraging, feeding and other work, with the largest number; Soldiers and ants guard the safety of the masses, and the number is small.

Five, the reproductive habits of ants

The reproductive process of ants is generally divided into three parts: mating, spawning and nesting. When a nest of ants reaches a certain number, the queen will breed male and female ants in advance. When the time is right, female ants will fly out of their nests to mate, build their own nests to reproduce and become new families. Ants are completely abnormal insects. Complete metamorphosis is a process from egg to adult through larval stage and pupal stage.

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One Saturday night, a friend of mine came to my house and told me excitedly as soon as he entered the door: "There is good news today. The Ocean Park in Haikou has moved to eight places, and a popular science exhibition will be held during the National Day. I heard that sharks have more than 200 kilograms! " This is really exciting news. I jumped three feet high with joy, and I really want to see it soon.

103, our family went to the stadium of lights happily. After buying the tickets, we walked in. First of all, we saw a dazzling array of shell specimens, which made me dazzled. Looking to the left, there is an ancient birthday girl-turtle in the ocean. Turtles are big and small, and the big ones are dozens of centimeters long and weigh 100 kilograms. The small one also weighs several kilograms. There is also a tortoise that looks strange. Generally speaking, the tortoise has an oval shell, but its shell has many sharp corners. I think it's a tortoise, but its real name is overlord tortoise.

I walked forward and saw a shark in a water tank. There is a sucker shark on the shark. The staff told us: "Sucker sharks are the laziest fish. It doesn't swim by itself, but dares to stay on the dominant shark in the sea. But the shark will not attack it, because the shark and it are good friends. " I asked, "Why are sharks good friends with them?" The staff said: "Because it can help sharks eliminate parasitic bacteria. There is a sucker like a brush under it, which can be tightly attached to the shark. "

Later, I met the turtle shell, the king of shellfish, and heard the staff say, "At that time, when people salvaged it, it weighed more than 500 kilograms. After removing the meat, it weighed more than 100 kilograms." I thought: If I curl up, I can go in.

We also saw all kinds of shellfish, such as giant snails and nautilus ... It's really an eye-opener to see so many underwater creatures today.