Insects

The insect has a fixed external cover, an external structure, a divided body, and common legs. It usually has the adult wing insects, the only invertebrates that fly, and usually the adult insect body is divided into three distinct parts Head, chest, abdomen, head, three pairs of oral parts, one pair of composite eyes, three simple eyes (Ocellus), one pair of common sensory antennas, the chest divided into three parts, each with a pair of legs , And has a couple of wings , And the belly appendages background associated with intermarriage, and consists of the outer structure of a solid substance called chitin. 

Insects breathe through a complex network of airways (trachea) that are open to the outside through a series of small openings (fuses) along the sides of the body. The digestive system includes the muscular intestines found in the insects that chew and are not present in the absorbent insects, The simple circulatory system consists of the tubular heart that pumps blood forward in the head, spreads through the tissue and returns to the heart. The aquatic larvae breathe through the outer nostrils, and some very primitive species breathe directly through the body wall. 

General characteristics of insects

Insects may be the most successful group among all animals because of their many species and individuals, their adaptability and wide distribution. Today, wild animals dominate about one million species. This represents about three quarters of the animals described. The actual number of species of living insects can be as high as 5-10 million, and the species with the largest number of species are wingfish, such as beetles and winged hospitals, such as butterflies, moths, and winged parasites, such as ants, bees , Wasps, and bows S wings, like real flies.

Benefits of Insects

Natural and biological control

The balance of nature depends on the activities of parasites and predators, most of them insect species, where researchers use this concept in biological control, and have been successful in many programs.

Inoculation

The importance of insects can not be limited to pollination of plants. Honeybee is one of the most important pollinators, pollinating about 80% of pollination in the United States. Pollination positively affects crop productivity by about $ 20 billion per year, including fruits, vegetables , And many nuts.

The importance of insects in nature

Insects play many important roles in nature. They help bacteria, fungi, and other organisms analyze organic matter and soil composition. For example, the decomposition of the carcass, mainly caused by bacteria, is accelerated by fly larvae or bedding. Bacteria, moth and beetle activities that analyze hair and feathers.

See More : How to treat bee pinch

Damage to insects

Pests can cause significant agricultural damage because they feed on many types of organic matter. Insect pests prey on food or wood crops, whether in the field or in storage. Microorganisms transmit infection to crops, animals and humans and use pest control technology, : Applied Sciences of Agricultural Insects and Forests, Medical and Veterinary Insectology, and Urban Insectology.