What do cicadas rely on to reproduce? What is the mode of reproduction of cicadas

It is what everyone calls cicadas, which are parasitic on various trees, and in summer, they will have a sharp and loud chirp. So, how do you know how to reproduce?

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1. How to reproduce?

Knowing that the female cicada reproduces through oviparity, the mating female cicada punctures the bark with a needle-like ovipositor and lays the eggs in the young branches, and the branches will wither and die and fall into the soil after being pricked. After hatching into nymphs, the eggs are attached to the roots of the tree and suck the sap for a living, and after 2 to 3 years, the nymphs grow and mature, and after the summer solstice, they will burrow out of the ground.

Second, the economic value of knowing.

Cicada molt is rich in chitin, protein, amino acids, organic acids, etc., and is often used for external wind heat, cough hoarseness, sore throat, rubella itching, red eyes, tetanus, pediatric epilepsy, night crying and other diseases. There is also a record of cicada eating in the ancient "Book of Rites", when cicadas were not only the food of ordinary people, but also became a delicacy at the banquet of kings and nobles, and there are still many places where the custom of eating cicadas is retained. Cicadas can be eaten in a variety of ways, either braised or fried.

It is a high-protein food like earthworms, grasshoppers, ants, bean insects, silkworm pupae and other insects. According to dietitians, cicadas contain up to 72% protein, which is a natural nutrition.

Because it is known that it can bring good economic value, there are a lot of artificial breeding at present, and when breeding, the preservation of cicada eggs is directly related to the hatching rate and the strength of cicada ant physique, which must be paid attention to.

The cicada pupates into adults in June and July every summer, at this time the male cicada will make a sound to attract the female cicada to mate with it, after mating, the female cicada inserts the oviposition tube into the trunk to lay eggs, the eggs will hatch larvae in the second year, the cicada has two pairs of membranous wings, the head is wide and short, the compound eyes are distributed on both sides of the head, there are short antennae with bristles and 3 pairs of legs, and the body length of the adult is 2-5 cm.

Cicadas pupa into adults in June and July every summer, at this time the male cicada will make a sound to attract the female cicada to mate with it, after mating, the female cicada will insert the oviposition tube into the trunk to lay eggs, the eggs will hatch larvae in the second year, at this time live in the soil for several years or more than ten years, after many times of shedding the shell into an adult, for mating and reproduction.

The cicada has two pairs of membranous wings, the head is wide and short, the compound eyes are distributed on both sides of the head, there are short antennae like bristles, there are 3 pairs of legs, the color of the last instar larvae and the adult are similar, the body length of the adult is between 2-5 cm, and the length of the largest variety is about 7 cm.

The larvae of the cicada have strong forefeet and piercing-sucking mouthparts, absorb enough nutrients and will molt and feather at the end of June, at this time there will be black cracks on the back, green when they first emerge into adults, and then gradually grow and mature after the color will deepen, the lifespan after feathering is between 60-70 days, note that the cicada begins to lay eggs in July and August every year.

Cicadas are mainly distributed in tropical and temperate regions, usually inhabiting grasslands or forests, but also inhabiting deserts, among which the cicadas that appear in the summer of each year are the three-dog cicadas, which belong to the class of moth cicadas, in addition to the periodic cicadas, among which the seventeen-year-old cicada.

and the thirteen-year-old cicada is the most famous.

The mode of reproduction of cicadas is oviparous. Female cicadas use needle-like ovipositors to cut through the bark of young branches and lay their eggs in the branches. Cicada eggs spend the winter on the branches and hatch nymphs the following summer.

The nymph falls to the ground and burrows into the dirt, finding the roots of the tree to suck the sap. The nymphs inhabit the ground for several years, and do not crawl out of the ground until the evening before emergence, find a plant and fix it, burrow through a crack in the center of the dorsal back of the chest, and wait until the next day's dawn exoskeleton.

And the wings harden and you can fly. The male cicada has a vocalizer, the female cicada does not, and the female cicada will go to find the male cicada to mate and lay eggs, so that a generation is completed.

The habits of cicadas are as follows:

Cicadas are widely distributed in temperate to tropical regions of the world, inhabiting forests, deserts, and grasslands. Some species of cicadas are distributed in desert areas, and when the body temperature is too high, more water will be expelled from the back plate, so as to achieve the effect of cooling and heat dissipation.

The larvae of cicadas live in the soil and have the habit of a pair of strong, digging forefoot cicadas. The sap of plant roots is sucked by the piercing and sucking mouthparts, which weakens the tree momentum, makes the branches die, and affects the growth of the tree. They usually stay in the soil for a few years or even more than ten years, such as 3 years, 5 years, and 17 years.

The cicadas spend years in the ground not in this small hole, this is just a passage for them to climb out of the ground. The larvae come from somewhere else, probably far away, and no one knows how the cicadas spend their long time underground.

Lifespan and characteristics of cicadas:

The cicada's lifespan generally ranges from one month to more than ten years, and its larval period is spent underground, where they survive by sucking the sap from the roots and tendrils of trees. The larvae of the golden cicada usually live underground for about 1 to 2 years, then dig holes and climb trees to molt to become adults, and then they spend the last month to complete their final mission. The lifespan of lime may be much shorter than that of golden cicadas.

The male cicada has a semicircular lid on the left and right sides of the abdomen, and there is a cavity underneath, and there is a small hole on the outside of the cavity, and inside the small hole is the cicada's vocal organ. The voice of the cicada is low and hoarse when it closes its belly, and the voice of the cicada is loud and crisp when it puffs out its belly.

In June and July of each year, the nymphs will turn from pupae to adults and then lay eggs in just a few days, starting from the eggs, the process of the nymphs living in the ground, until the last time they shed their shells and become adults, and they are loud in the trees, usually one to two years.

Among the cicadas, their larvae are also called "nymphs", their male cicadas will make sounds to attract female cicadas to mate with them, and they use their sharp oviposition tubes to lay eggs close to the tree, and the larvae will not hatch until the next year, and then live in the soil for a few years or even more than ten years before breaking through the soil.

In a long life, they have to go through many shellings, and the next shelling is also when it becomes an adult, and when it becomes an adult, it will make a sound, and the sound made by the male cicada is at a high frequency of hundreds of times per second, constantly moving the two tympanic membranes located in the abdomen, to make a sharp and loud sound. This sound seepage helps the female cicada determine the location of the male cicada suitable for mating.

1. The ovipositor of the female cicada pierces a circle of small holes in the young branches, lays the eggs inside the wood of the tree, and punctures them with mouthparts at the lower end of the young branches.

A circle of phloem makes the branches cut off from water and nutrients, and the shoots gradually die. Branches with eggs are easily blown to the ground by the wind so that the hatchlings can burrow into the soil.

2. The eggs laid by the cicada hatch in half a month. The life period of young cicadas is particularly long, with the shortest being 2 to 3 years underground, generally.

4 5 years, the longest is 17 years. The young cicada has been living underground for a long time, with warm winters and cool summers, and there are few natural predators to threaten it.

After 4 to 5 molts, they have to get out of the ground, climb the branches and finally molt in turn, becoming adults.

Distribution of cicadas] 1. Tropical, inhabiting deserts, grasslands and forests. In addition to the species of the genus Mothcia that appear in midsummer every year, there are also Zhou.

Periods. The most famous periodic cicadas are the 17-year-old cicada and the 13-year-old cicada, which appear once at certain intervals in a certain area.

2. Some species are easier to identify from the sound, behavior and morphology. The male cicadas of each species make 3 different calls Ensemble sounds, which are affected by each.

diurnal weather changes and the regulation of other male cicada calls; courtship sounds before mating; The gruff sound of being caught or frightened and flying away. Larvae.

It lives in the soil and feeds on the sap of the roots of plants, and adults suck the sap from the upper parts of plants.

Reproduction of cicadas] 1. Acquisition of provenance, collection of eggs. Choose a place with dense trees and many cicadas, and use a long pole with tall branch shears at the top to lay eggs on the tree to kill the cicadas.

The thin dry branches of the tree are cut off. All sides are flat, dry and with an incomplete surface, and the subcutaneous xylem is inlaid with a large number of milky white oblong ovals.

The eggs are cicada eggs.

2. Cut off the excess eggless auspicious shoots in the upper part of the ovipositor nest, leave 10-15 cm eggless branches in the lower part of the oviposition nest traces, and bundle 50 into 1 small.

bundle and put it in a plastic bag. Plastic bags should have holes. Adults are collected, and mature larvae are collected at 18-24 hours. The harvester is the Lord of the tree.

The base of the stem is captured by irradiation with a flashlight. After harvesting, it is placed in a mesh box for feathering and spawning.

3. There are many natural enemies of nymphs and adults in pest control, such as toads, snakes, rats, hedgehogs, sparrows and other birds; Beauveria bassiana, zombie aeruginosa.

microorganisms such as fungi and cordyceps fungus (cicada fungus). Floods and pesticides and fertilizers are more harmful to nymphs or adults. The most important seasons are:

The egg stage on the tree is the occurrence period of "cicada ants", and the emergence period of old mature nymphs. The natural enemies are mainly ants and small red toons, and the control measures are used.

Dilute 100 times of the solution with strong chlorine to soak the branches with eggs, or use dichlorvos, strong chlorine and other agricultural herbs for soil treatment.

<> How do cicadas reproduce?

First of all, I tried to put a number of cicadas in my grandfather's idle birdcage, and I put some fresh branches in it, and changed them regularly to ensure that they could absorb the sap of the tree, and as a result, these cicadas died in one day at the earliest, and not more than three days at most, and as for the eggs, I didn't see a single egg. It is speculated that the cicadas may have a large demand for sap, and some of the broken twigs are fresh, but in the summer, the high temperature and water loss are also fast, which eventually leads to the lack of food and water and the death of the cicada.

Since the trick of letting cicadas lay eggs doesn't work, let's switch to collecting egg branches. The life of the cicada has to go through three late stages of egg, nymph and adult, among the three stages, the nymph period is the longest, with an average of at least 2 years, like the North American cycle cicada, and even the nymph period is as long as 17 years, so that the nymph can become a cicada, which is not very cost-effective, after all, the nymph is the most expensive and the most delicious stage, and I am reluctant to do experiments when I am a child.

Therefore, the eggs can only be collected, and the cicadas usually begin to appear in June every year, reaching their peak in July, and the peak of cicadas' egg-laying season is actually concentrated in August and September.

When cicadas lay their eggs, they usually look for some small branches of the year, which are usually no more than centimeters in diameter, which is very thin. It's also easy to identify such branches, and in late August, many cicadas have already laid their eggs, and since the cicadas use their sharp ovipositors to pick open the bark and lay their eggs inside, this creates the destruction of the bark of the twigs, which we can see if we look closely.