How many species of cultured leeches are there?

1. Japanese medical leeches, also known as medical leeches, are cylindrical and about 5 cm long. 2. Brown leeches, also known as turtles, are willow leaf-shaped. 3. Wide-bodied golden leech, flat body, dark green back color.

4. Philippine leeches, also known as Phnom Penh leeches, feed on blood. 5. Pointed and thin gold-threaded leeches, with a small head and a brown back.

1. Japanese medical leeches

Japanese medical leeches are also called medical leeches, their body size is narrow and long, cylindrical, about 5 cm in length, there are green and yellow longitudinal lines on the back, the abdomen is gray-green, no markings, and Japanese medical leeches mainly live in paddy fields and swamps, and feed on the blood of people and animals.

2. Brown leeches

The brown leech is also called the cow turtle, showing the shape of willow leaves, the body is flat, the back color is brown-green, there are 5 green-black longitudinal lines, the abdomen is light yellow, and the brown leech has strong adaptability to the environment, and it is distributed in all provinces in China.

3. Wide-body golden-threaded leech

The wide-body leech has a flat body, a body length of about 13 cm, a dark green back color, 6 fine yellow-black longitudinal lines distributed, a pale yellow abdomen, and irregular brown spots, and the wide-body golden leech mainly feeds on insects and plankton in the water, and does not suck blood.

1. Wide-bodied golden-threaded leeches, which do not suck blood, feed on shellfish, and have a fast growth rate. 2. Japanese medical leeches, which live on animal blood and are small. 3. Sharp and thin gold leeches, with a unique appearance, with a yellow stripe on each side.

4. Philippine leech, a common variety in the south, has medicinal value. 5. Brown leeches, flat in size, belong to wild varieties.

1. Wide-body golden-threaded leeches

The wide-bodied golden leech is one of the most important species of leeches raised in our country, this leech does not suck blood, does not have the sequence of fine teeth used by blood-sucking leeches, but has many blunt teeth that can easily cut crustaceans, mainly feeds on shellfish, is large, reproduces rapidly, grows very fast, and is easy to catch.

2. Japanese medical leeches

Japanese medical leeches are a kind of blood-sucking leeches dedicated to medicine, mainly living on animal blood, the body size is not very large, and it is generally raised as a representative of sterile blood-sucking leeches in medicine, but the scale of breeding is difficult to expand, so it is not widely used, and is mostly used for clinical practice or vivion surgery.

3. Thin and thin gold leeches

The appearance of the thin golden leech is relatively unique, there is a golden yellow longitudinal stripe on both sides of the body, the abdomen is yellow-gray, and the edges of both sides have black-brown spots to form a markinged band, mainly preying on the aquatic larvae of earthworms and various insects in the water to survive, there is no ability to suck blood, and the size is slightly smaller than the wide-body golden leech.

4. Philippine leeches

Philippine leech is a very common leech species in the southern region, domestic Fujian, Taiwan, Guangdong, Guangxi, Hubei, Hainan and other places are distributed, it is a typical blood-sucking leech, living in ditches or ponds, mainly sucking vertebrates, such as human or cow, horse blood, has the ability to anticoagulant, can be used for medicinal purposes.

The main differences between farmed leeches and wild leeches are as follows:

1.Different appearance: Farmed leeches are usually stronger in appearance than wild leeches, with more well-proportioned bodies and more vivid colors.

2.Different health conditions: farmed leeches are healthier than wild leeches, can resist various germs and viruses, and live longer.

3.Different habits: farmed leeches do not swim in the water like wild leeches, but circulate in pools, so their mobility is limited to a certain extent.

4.The growing environment is different: farmed leeches live in artificially managed pools, and the water temperature and water quality in the pools can be controlled, while wild leeches live in the natural environment and are affected by the natural environment.

1. Different morphological characteristics: the body shape of the cultured leech is larger, the body color is relatively bright, and there are red, green, black, purple and other colors; Wild leeches, on the other hand, are smaller in size and darker in color, mostly grayish-brown.

2. Different growth environments: Breeding leeches generally grow in an artificial breeding environment, and the temperature, water quality and other conditions can be controlled; Wild leeches, on the other hand, grow in their natural environment, and conditions such as temperature and water quality cannot be controlled.

3. Different feeding habits: farmed leeches generally eat artificial feed as their staple food, while wild leeches feed on small animals in the natural environment.

4. Different spawning methods: artificial spawning methods are generally used for breeding leeches, while wild leeches are naturally spawning.

There is no obvious difference in appearance between farmed leeches and wild leeches, but there are many differences in breeding.

1. Wild leeches generally grow in the natural environment and have a strong ability to adapt, but farmed leeches are easy to adapt and obey manual management.

2. Farmed leeches have strong disease resistance and can be almost immune to any disease, while wild leeches are easily affected by diseases.

3. The breeding time of wild leeches is longer, and the breeding time of leeches can be greatly shortened.

4. The powder of wild leeches is basically ground natural feed, while the powder of cultured leeches is chemically supplemented.

The main difference between farmed leeches and wild leeches is that they grow in different environments, farmed leeches grow in captivity, while wild leeches grow in a natural environment. In addition, because farmed leeches are raised in a certain nutritional environment and conditions, the size of farmed leeches will be slightly larger than that of wild leeches, but the characteristics and nutritional value of the two are similar.

: There is a big difference between farmed leeches and wild leeches, and the taste of farmed leeches is softer and the color is more uniform; Wild leeches, on the other hand, have a slightly harder taste and a more messy color. In addition, farmed leeches contain more nutrients than wild leeches, which can exercise people's disease resistance more.

At present, there are four popular breeding methods: leech cage culture, leech knife scraping Bukaiyu culture, leech cage culture, leech greenhouse burning draft raising section rolling breeding; To learn leech breeding technology, you can see the double immunization leech cultivation method published by China Agricultural University.