What kind of animal is a leech, and what is a leech?

Leeches belong to the annelid leech class.

Grasshopper, the common name of leech, belongs to the annelid leech class, there are 400 to 500 species in the world, about 100 species in China, and 89 species have been discovered.

The main characteristics of leeches are flat spindle-shaped, with many links; The back is black-brown or black-brown, slightly raised, and after immersion in water, black spots can be seen arranged in 5 longitudinal stripes; The ventral surface is flat, brownish-yellow. brownish-yellow on both sides, slightly pointed at the front end, blunt and rounded at the back end, with 1 suction cup at each end, the front suction cup is not significant, and the rear suction cup is larger; Brittle, easy to break, cross-sectional gelatinous; The smell is slightly fishy.

Grasshoppers mostly live in freshwater, a few in saltwater, and some are terrestrial and amphibious. There are species that live by sucking blood or body fluids, and there are also carnivorous species that prey on small animals. The common grasshopper in the rice fields is called the Japanese medicine leech, which feeds on the blood of humans, animals, and frogs.

There are some mountain locusts living in the mountains and forests of Hainan Island and Taiwan, often lurking in the grass and trees. After being processed, the grasshopper can be used as a valuable Chinese medicinal material. In recent years, due to the threat of chemical fertilizers and pesticides to their living environment, coupled with predatory fishing by humans, the wild resources of locusts have been decreasing.

In order to meet the market demand, the artificial breeding industry of grasshoppers is developing rapidly.

Grasshopper is a common name for the phylum Annelids and vermicules. Unlike other annelids such as earthworms or sand silkworms, most of these animals live in vitro parasitism temporarily. Adapted to this lifestyle, the locust has no bristles on its body, has suction cups at the front and back ends, and has a muscular body, and the body cavity is divided and filled by muscles and connective tissues and shrinks.

Leeches are many carnivorous or blood-sucking annelids that make up the class Leechida. It is a hermaphroditic animal that usually develops directly, mainly found in freshwater, a few are marine, and some tropical types are terrestrial.

Leeches, also known as medical leeches, commonly known as water locusts, are distributed all over the world, with more than 300 species, and more than 100 species in China. All the animals dried by the wide-bodied golden leech, the brown leech and the Japanese medical leech are recognized as traditional Chinese medicinal materials by the Pharmacopoeia of the People's Republic of China (hereinafter referred to as the "Chinese Pharmacopoeia").

Distribution:

It is produced in lakes, ponds and paddy fields in most parts of China. It is mainly produced in Shandong Weishan, Dongping, Nanyang Lake and other lakes, with Weishan Lake having the largest output, in addition to the province, and sold in Northeast China, Hebei and Shanxi.

Some of the products produced in the suburbs of Suzhou, Wuxian and other places in Jiangsu Province are also exported. In addition, Zhejiang, Anhui, Hunan, Hubei, Sichuan, Shaanxi, Hebei, Liaoning, Jilin, Heilongjiang and other places are also produced, all of which are self-produced and sold.

<> leech, commonly known as leech, is a cold-blooded anlinkar belonging to the phylum Annelids, Leechidae, Leechidae, and Leechidae. Leeches mainly live in freshwater waters such as reservoirs, ditches, rice fields, lakes and marshes, and their main lifestyle is to suck the blood or body fluids of animals, and they have strong survival ability.

Leeches are leeches of the family Leechidae.

Leeches (scientific name: whitmania pigra whitman), also known as leeches, leeches, grow and breed mainly in inland freshwater waters.

The leech is slightly flattened in length, cylindrical at first glance, about 2 15 cm long and about cm wide.

The dorsal surface is green with black in the middle, with 5 yellow longitudinal lines, the ventral surface is flat, grayish-green, without variegated spots, the overall annular pattern is prominent, and the body segment is composed of 5 rings, each with a similar width.

Leeches have high medicinal value and are traditional Chinese special medicinal aquatic animals.

Leech value. 1. Leech, commonly known as leech, has been recorded in the "Shennong's Classic of Materia Medica" and has high medicinal value; It grows and breeds in inland freshwater waters, and is a traditional Chinese special medicinal aquatic animal.

Its dried products are soaked in traditional Chinese medicine and have the effects of stroke, high blood pressure, stasis, amenorrhea, bruises, etc. In recent years, it has been newly discovered that leech preparations have special effects in the prevention and treatment of cardiovascular and cerebrovascular diseases and anti-cancer.

2. It is mainly natural fishing in history, due to the abuse of pesticides and fertilizers in recent years, as well as the pollution of the environment by the "three wastes" of industry and agriculture, the source of wild natural resources has decreased sharply.

With the in-depth development of the medicinal value of leeches, its market demand potential is huge. Around 1995, southern China began to harvest natural seeds, and for the first time they were raised in captivity, which was successful.

In the northern region, there has been no cultivation for seed and technical reasons. <>