Speaking of beetles in the insect family, it is one of the insects most closely related to humans, and the vast majority of their species have established a connection with humans and their homeland, and they often have a place in human myths and legends. In ancient Egypt, known as scarabs were dung golden turtles, in the eyes of the Egyptians, they were regarded as a symbol of rebirth and immortality, when people saw adult dung scarabs bury themselves in the ground and reappear in the form of the next year, they associated the dung scarabs with good luck, and to this day, there are still people who wear scarab ornaments as a talisman.
<h1 class = "pgc-h-arrow-right" > most species are classified as pests</h1>
The remains of insects found at archaeological sites indicate that beetles that modern humans consider pests have been living with humans for a long time. The reason why it is considered a pest is that the beetles carry out their normal daily business on some items belonging to humans. Spider-shells from Asia are superb eaters who can feed on any dead organic matter, leather, feathers, hair, or even dried plants that they enjoy eating and are therefore not popular in homes or warehouses.
Another skilled beetle can invade many types of storage items, even burrowing into tin and lead items. Wood borers can break down dead trees, allowing the nutrients in them to enter the ecological cycle and provide nutrients for new life. But both human wooden buildings and furniture wood are at risk of being attacked by beetles on their interiors. Celestial bull larvae feed on roof wood and often take years to feather into adults; House borers or domestic cattle are commonly found in pine furniture, and death bugs usually do not let go of old oak wood; Some wood frogs like to eat furniture and floors, people can often find small round holes in these things, adult wood borers are in these holes through the larval stage without appendages, during which they live by nibbling on wood, the result of eating is to form these holes, and then they feather into adult worms and fly away.
Bark beetles pose a more serious problem because they eat live trees. The dried beetle of elms causes great harm to the English countryside with tall elms. In fact, the insects themselves are almost harmless, and their larvae only drill some holes in the bark straight. The problem is that they spread a deadly fungus, the Dutch elm fungus, which invades the vasculature of trees that transmit nutrients and water, interrupting transmissions and eventually causing the tree to die.
A weevil burrows into the apple blossom to lay eggs, a behavior that hinders the normal development of the fruit. Indian corn, on the other hand, was unlucky enough to be destroyed by several species of kowtow larvae, which fed on the roots of the corn. In weevils, corn weevils invade the cork marrow of corn stalks. Other beetle villains include the Mexican bean beetle and its close relatives, which destroy pods such as soybeans, cowpeas as feed, and solanum plants such as tomatoes and eggplants.
Potato growers are most afraid of the famous Colorado beetle, which has a bright body color and feeds on potato stems, which will eventually lead to a decrease in potato yields. When a large number of individuals gather together and haunt, probably all the potato crops will disappear. Genetic engineering experts have bred a plant that synthesizes its own toxins that are effective against beetles.
On the other hand, however, there is also concern that these toxins will enter the body of beneficial insects such as insects through the food chain – and similar side effects will in turn create a series of new problems. The spread of pathogenic microorganisms among beetle visitors may worsen the condition of some crops. In leaf beetles, the germs carried in cucumber beetles can cause the crop to wither if washed into the fresh wound of the crop by water.
<h1 class= "pgc-h-arrow-right" > a small number of species became friends of humans</h1>
Although most beetle species are harmful to human production and life, there are still some varieties that are helpful to humans. Nowadays in Australia, people use shells to solve a problem facing farms. The existing insect fauna in the area could not cope with the large amount of gong stool produced by foreign cattle, so the dung golden turtle was introduced from Africa and South America to solve the problem.
In the UK, chemicals fed to cattle to control parasites can slow down the breakdown of cow manure piles. For months, the cow dung remained untouched because the shell lang and other insects refused to touch the cows. This result shows that the feeding of cattle and sheep plays a role. At the same time, certain species introduced from Hawaii and Puerto Rico have been very successful in controlling the number of fecal horned flies, adults of which suck the blood of cattle.
Ground beetles are important natural enemies of pests, but due to the excessive use of pesticides, the number of ground beetles has declined in recent years. But at the same time, the cost of pesticides also reduces farmers' benefits, and the effects are more pronounced in poorer countries. A study in the 1990s showed that in the Philippines, farmers who had been trained on how to increase the number of ground beetles and spiders around their own farmland, after abandoning the use of pesticides, not only did their farmland yields not only not be affected, but were more profitable.
< h1 class="pgc-h-arrow-right" > invasion of beetle species caused by climate problems</h1>
Global warming has already had an impact on the distribution of insects, and many beetles that were previously unaccustomed to cold and humid northern Europe, especially the northern European winter, are now able to survive and reproduce in the region, a trend that has had devastating consequences for local ecosystems.
Over the past few years, two species of beetles have entered the UK to exacerbate forest areas that have been infested with elm beetles. Large black-and-white Asian Celestial Bulls are said to have entered the UK with wooden pallets of cargo from China, first spotted in Cumbria, and now spread to many other regions. The larvae of this celestial cow can harm a variety of trees, such as small fig trees, horse chestnut trees, willow trees, apple trees and pear trees. They will drill all the way to the heart of the tree and eventually kill the tree. In addition, cattle have caused extensive damage since they entered the United States in the 1980s with wooden boxes for sewer pipes. The larvae of the Celestial Bull have spread widely to native maple, elm and poplar trees.
Beetles are insects that are even our friends and our enemies, and the battle between us and beetles never stops, and if we want to live more harmoniously with beetles, we must understand their habits and pay attention to the impact of global warming on the activities of this insect.