What are the natural enemies of locusts? Why do locust plagues occur on Earth?

At the beginning of 2020, the locust army, which crisscrossed about 50 kilometers, began to expand from East Africa to Asia. Locust infestations have also occurred in India and Pakistan. Locusts are everywhere in violent storms, large quantities of crops are eaten and destroyed, and there is also a food crisis in some countries in Africa.

According to statistics, the number of locusts reached 400 billion, which is 51 times the current population of the world. According to experts, if the number of locusts is not controlled, the size of the locusts will be even larger, possibly up to 200 trillion. Because the locusts have entered the breeding season.

<> why did the locust infestation happen? One of the main reasons why locusts are prone to infestation is that locusts are very felive. The locusts reproduce every three weeks and have very small spawning grounds, leaving offspring almost at any time as long as the soil is soft.

The eggs are in the ground, so they are not easily destroyed It is estimated that the female birds of locusts lay about 100 eggs per one, and there are 300,000 eggs in 1 square meter of soil. Therefore, locusts can multiply on a large scale as long as the conditions are good, and the number of individuals can increase rapidly. Depending on the serotonin, the locusts that live in a person live in swarms, and the color of the body changes from green to brown, and the damage to the place where the locusts eat and fly occurs.

The occurrence of locusts is linked to the occurrence of climate change, especially drought. There is an old saying about "dry locusts". Locusts breed in a dry environment, and drought forces locusts to move in large numbers.

Due to their high fecundity, locusts are not picky eaters, and a wide variety of plants, including crops, become feeders. The locusts are very capable of flying and can fly for hours on end, up to 150 kilometers. Locusts fly 1,000 kilometers a week.

So, how should humans respond to locust attacks? What are locusts afraid of?

First of all, the locust plague can be cured from the locust breeding action. Locusts prefer drought and can increase vegetation cover, and the relatively humid environment prevents locusts from laying eggs in the soil. Therefore, it not only protects vegetation, but also prevents sand winds and locust disasters.

Next, use the locust's natural predator to fight off the locusts. The natural enemies of locusts include frogs, birds, wandering spiders, poultry, etc., and the number of locusts can be suppressed by raising and protecting the natural enemies of locusts.

Frogs are the natural enemies of locusts; Desert locusts have a tendency to deteriorate because of the favorable climatic conditions for survival, they can destroy local food and crops, such as forage and food crops, the desert locust plague may respond to a humanitarian crisis in the Horn of Africa, in order to protect the appropriate security of livelihoods, the situation of desert yellow populations and to assist countries in their actions and eradication of this pest.

Because its reproductive ability is particularly fast, and the number of reproduction is also very large, plus the adaptability is relatively strong, so locust plagues will occur, and the natural enemy is frogs, or you can also spray some insecticides on the eggs, which can also be killed.

Frogs and chickens are natural enemies of locusts; The reason why locust plagues occur on the earth is because the reproduction ability of locusts is very strong, and many locust eggs are relatively small, and they are very well hidden, and there is no good cleaning to clean up.

Chickens, because they are afraid of chickens, and chickens will eat them as well. Because their upper food chain is gradually decreasing, there are no professional pesticides.

Chickens, because it is afraid of chickens, and chickens will eat it because of the gradual reduction of his grassroots food chain, there are no professional pesticides.

1. Locusts harm grasses, are agricultural pests, natural enemies in nature have frogs and birds, especially frogs, and locusts live in the same type of ecological environment, is the main natural enemy of locusts, in addition to lizards, spiders, praying mantis and other animals also hunt locusts.

2. Almost all frogs are the natural enemies of locusts, frogs and locusts live in the same type of ecological environment, where there are reeds, weeds in low-lying land, pits, ditches, etc., are their good places of survival, so frogs are the vanguard of restricting the locusts to live and reproduce. According to statistics, a frog can eliminate more than 10,000 pests in a summer, and a frog eats an average of 50 pests a day, up to 266, even a stupid toad can prey on nearly 10,000 pests in three months of summer. According to this calculation, an average of one frog in two square meters of crop field is enough to inhibit the survival of the hopper.

Because it is a natural disaster, it can only be explained by the laws of nature! Very simply, that time was because the locusts were too multiplied and there was not enough food, so they had to go to forage in groups, and the reason why there were so many was because they had a fear of human beings. Hehe......

yinwei because of the insatiable desires of human beings.

The main reasons for the rampant formation of locusts can be summarized as follows:

1) The main locust species that form locust plagues have physiological ecological characteristics such as fast reproduction, large reproductive offspring, wide diet, large food quantity, and strong dispersal and migratory ability. East Asian locusts can occur 2 4 generations in 1 year, female adults after the mating of male and female locusts can lay eggs many times per generation, generally can lay 4 5 eggs in a lifetime, up to 12 eggs, each piece generally contains 50 80 eggs, the average total number of eggs laid in a lifetime is 300 400 eggs, and the total number of eggs that can be laid by individual summer locusts and autumn locusts can reach 1013 and 592 eggs at most. The egg mass of the desert locust contains 20 100 eggs, and the dispersed female can produce up to 120 eggs.

The social type spawns up to 1000 square meters in groups. It should also be noted that both the East Asian locust and the desert locust are parthenogenic, i.e. the female locust can lay eggs without mating, and the hatched offspring are all females, and their adults can mate to lay eggs or continue parthenogenesis. There are about 20 kinds of food plants in East Asian locusts, with a lifetime diet of about 60 80 g, and the adult stage eats 3 7 times more than that of the bug stage.

Swarms can spread for short distances, and adults of the social type can migrate over long distances. The desert locust can fly up to 1500 to 5100 km, and its flight experiments have shown that it can fly continuously for 17 hours. For example, the eggs of the Italian locust in Xinjiang can reach 140 square meters, and the eggs of the Siberian locust can reach 486 square meters.

2) Abnormal climate in the world and region, frequent droughts and floods, improper rise and fall of water conservancy projects or sudden changes, etc., will be conducive to the generation, existence or attention of some suitable conditions for locusts, poor grassland management, overgrazing, grassland degradation and improper human use of land resources, etc., are conducive to the rampant occurrence of locusts in some agro-pastoral ecotones.

3) Global warming, early warming of spring temperatures, hot summers, and warm winters lead to low mortality of locust eggs overwintering, and the occurrence of locusts is generally early, and the occurrence of East Asian locusts has a northward trend (the occurrence of second and third generations has occurred in the 1 2 and 2 generations and 2 and 3 generations of regions).

4) The investigation and monitoring of locust situation, water situation, drought situation and climate change are neglected, insufficiently grasped, untimely, or even wrong, and the monitoring and reporting control structure and the quality management level of its professionals are all greatly affected and played an extremely important role in locust control.

5) Flow changes (flow size, duration, water level fluctuations, floodplain area, etc.) and flow interruption changes (frequency, morning and evening, duration, length of river sections, etc.) in the Yellow River, Huaihe River, Haihe River and other river basins, as well as rivers and lakes in locust areas. The fluctuation of water level in reservoirs and coastal areas has a significant correlation and impact on the size and density of locust occurrence areas.