CATDOLL : CATDOLL: Snail species (garden snail)

1. Snail Types

It looks a bit like: Emei Bianshan snail. But it's quite rare so I'm not sure. It would be better to have a higher-resolution picture to confirm. Food is fruits and vegetables. It can live well if the environment is humid.

The host, commonly known as "earth melon snail"

2. Which snails are poisonous and which are edible?

Poisonous snails include cone snails, sea snails and other species. Their toxins can cause an adult to die from poisoning. However, non-toxic snails are particularly useful and can provide certain value to humans. For example, the content of metal pollutants in the snail's digestive gland is an important indicator of the degree of soil pollution. This indicator can reflect the degree of environmental pollution. Snails can also be made into food for people to enjoy.

1. What kind of snail is poisonous?

1. Generally, snails are non-toxic, but some snails have certain toxins, such as cone snails and sea snails. However, non-toxic snails can provide many benefits to people. For example, snails can make some contributions to the environment and add delicious delicacies to people’s food.

2. Snails can also contribute to the environment. The content of metal pollutants in the snail's digestive gland is an important indicator of the degree of soil pollution. By testing this indicator, the degree of environmental pollution can be reflected, and people can understand which major environments need to be improved in a timely manner.

3. Snails can also be made into food for people to enjoy. In the UK and France, snails are made into a variety of delicious dishes. Snails have also become a famous dish in France. Many French people will order snails when they eat in restaurants.

2. What kind of snails are edible?

1. French snails are edible snails. There are as many as 22,000 species in the world, but only a few types of edible snails can be sold, such as French snails, garden snails and agate snails. These snails are large in size and have relatively delicious meat.

2. The snails that are edible in China are mainly white jade snails. White jade snails are produced in Taiwan Province, Hubei Province and southeastern coastal provinces. White jade snails are artificially cultivated snails. They are relatively cheap in terms of cost-effectiveness and are easily consumed by consumers.

3. When cooking snails, you must pay attention to high-temperature sterilization, because there are many bacteria in the snail's body, which can only be eliminated through high-temperature sterilization. If the snail is not cooked before eating, it may be infected with some parasites or some diseases.

3. Is there any information about snails?

Basic Information

English name snail

Snail Pinyin: wō niú Mandarin is pronounced as "wō niú", but in many dialects it is pronounced as "guā niú". Latin name: Fruticicolidae Classification: Animalia, Mollusca, Gastropoda, Stylophora, Macrostomidae

Introduction

Any of about 22,000 species of continental snails. Most belong to the class Gastropoda, the subclass Pulmonata, and a few to the subclass Prosobranchia. They feed on decaying plant matter and lay their eggs in the soil. Most common on tropical islands such as Cuba, but also found in colder regions where they hibernate during the winter. Arboreal species are brightly colored, while terrestrial ones are usually monochromatic. The largest are the African genus Achatina, which are often over 20 centimeters (8 inches) long. Several species of the European genus Achatina are often eaten as delicacies, especially in France. See the entry for gastropod. Snail

Snails are the animals with the most teeth in the world. Although their mouths are about the size of a needle tip, they have 25,600 teeth. There is a small hole in the middle of the snail's tentacles, which is its mouth. Inside is a serrated tongue, which scientists call "radula". Snail is not the name of a biological classification. It generally refers to all species of animals in the family of giant snails, and in a broad sense, it also includes some animals in other families of the class of gastropods (including slugs, etc.). Generally, Western languages ​​do not distinguish between aquatic snails and terrestrial snails. In Chinese, snails only refer to terrestrial species, although they also include many animals of different families and genera, but their shapes are similar. Snails have a relatively fragile, low conical shell. Different types of shells have left-handed or right-handed shells. There are two pairs of tentacles on the head, and the latter pair of longer tentacles have eyes on the top. There are flat and wide ventral feet on the ventral side. They move slowly, and secrete mucus under their feet to reduce friction to help them walk. The mucus can also prevent the invasion of general insects such as ants. Snails generally live in relatively humid places, hiding from direct sunlight in the bushes. Snails living in cold areas hibernate, and those living in tropical areas also hibernate during the dry season. When they hibernate, the mucus they secrete forms a layer of dry film to seal the shell opening, and the whole body is hidden in the shell. When the temperature and humidity are suitable, they will come out to move. Snails are distributed almost all over the world. Different types of snails vary in size. The African giant snail can be up to 30 cm long, while the wild species in the north are generally less than 1 cm. Generally, snails feed on plant leaves and tender shoots, so they are an agricultural pest. But there are also carnivorous snails that feed on other types of snails. Now this artificially cultivated edible snail has spread to all parts of the world along with French cuisine. Snails are hermaphroditic. Some species can reproduce independently, but most species require two individuals to mate and exchange sperm with each other. Ordinary snails lay eggs in moist soil, and generally two to four weeks later, the small snails will break out of the ground. 100 eggs can be laid at a time. Snails have many natural enemies. Chickens, ducks, birds, toads, turtles, snakes, and hedgehogs all eat snails. Fireflies mainly eat snails. Generally, snails can live for 2-3 years, and up to 7 years, but most of them may become food for other animals that year. The symbolic meaning of snails in various cultures is also different. In China, snails symbolize slowness and backwardness; in Western Europe, they symbolize tenacity and perseverance; some nations use the actions of snails to predict the weather. The Finns believe that if the tentacles of snails are very long, it means that there will be good weather tomorrow. Snails have high edible and medicinal value. They are rich in nutrition and delicious. They are high-protein, low-fat, low-cholesterol, and rich in more than 20 kinds of amino acids. High-grade nutritional supplements. Snails belong to the gastropod terrestrial mollusk, and there are many species all over the world. According to relevant records, there are 40,000 species of snails around the world. Snails are distributed in all provinces and regions of my country, living in forests, shrubs, orchards, vegetable gardens, farmlands, parks, gardens, temples, mountains, plains, hills and other places. However, there are few species that are valuable for breeding and eating. As a high-protein, low-fat, high-quality food and animal protein feed for humans, snails are increasingly valued by people. Snails are one of the most common mollusks on land. They mainly feed on plants, especially the buds and tender leaves of crops, so wild snails are more harmful to crops. With the development of science, people have turned harm into benefit and artificially raised snails, allowing snails to provide humans with snail meat with high nutritional value.

Appearance characteristics

The snail's entire body includes eyes, mouth, feet, shell, tentacles, etc. It has a spiral shell on its back. Its shape, color and size vary. Its shells are pagoda-shaped, gyro-shaped, cone-shaped, spherical, pipe-shaped, etc. At present, the white jade snail, the big snail with a cover, the big snail with a scattered cover, the big snail with a bright light, the brown cloud agate snail, etc. cultivated in China all have their own unique appearance. The snail's eyes grow on its tentacles.

Edit this section Anatomy diagram

1 shell 2 liver 3 lungs 4 anus 5 breathing holes 6 eyes

7 Tentacles 8 Cerebral ganglia 9 Salivary ducts 10 Oral cavity 11 Crop 12 Salivary glands

13 genital opening 14 penis 15 vagina 16 mucous glands 17 fallopian tube 18 scrotum

19 foot 20 stomach 21 kidney 22 mantle 23 heart 24 vas deferens

Anatomy diagram

Edit this paragraph Type

Snails are terrestrial shellfish mollusks. They have lived on Earth since ancient times. There are many types of snails, about 25,000 species, all over the world, and there are thousands of species in my country alone. Snails are not edible except for medicinal purposes. There are about 11 species in my country that are edible, such as the brown cloud agate snail, the tall ring-mouthed snail, the Hainan snail, the wrinkled snail, the Jiangxi snail, the Ma snail, the white jade snail, etc. There are three main types of snails that are used as food and artificially cultivated around the world:

French snails

It is also called grape snail, because it mainly lives in grape plantations and feeds on grape stems, leaves, buds, fruits, etc. It is named after it. Because it looks like an apple, it is also called apple snail. Its scientific name is the big snail with a hood. The bright big snail variety is produced in France, Italy, the former Soviet Union and other countries. The temperature adaptation limit is basically the same as that of the scattered big snail. This variety can weigh up to 400 grams. The shell is spherical, with a shell height of 28~35mm and a width of 45~60mm. The shell is thick and solid, opaque, with 5.0~5.5 whorls, and the spiral part grows slowly and is low-conical. The body whorl is enlarged, the shell mouth does not tilt downward, the shell surface is dark yellow-brown or yellow-brown, shiny, and has many black-brown bands. The shell top is blunt, and the navel of the adult is covered by the axial lip. The shell mouth is oval, the mouth edge is sharp, the lip is folded outward, and the inner substance is light yellow or light brown.

Garden snail

It belongs to the "Halex" snail, native to France, the United Kingdom and other regions in central and western Europe. It usually lives in gardens or bushes, so it is called "garden snail", also known as scattered snail. The adult snail is slightly smaller, about 3 cm in diameter, with a thin shell, yellowish brown, and 4 purple-brown bands, and the shell surface is covered with many small yellowish brown spots. At present, the scattered snails cultivated in my country are of poor economic benefits due to the degeneration of the species and small individuals.

Agate snail

Taiwanese call it Lu Lu, and in Guangdong it is called Dongfeng Lu, Cai Lu or Hua Lu. It belongs to the agate snail family. The agate snail originated from Malagasy Island in East Africa, and later spread throughout the tropical region. It is the largest snail in the world, so it is also called the African giant snail. The snail is cone-shaped, and the surface of the shell is covered with a layer of yellow-brown shell skin with dark brown patterns. Usually, the shell of an adult snail is about 6 to 8 cm long, 3 to 4 cm wide, and weighs more than 50 grams. In western Africa, especially the residents of the Gold Coast, snails are regarded as the only animal protein. Because this kind of snail meat is delicious, it is very popular with European and American bosses, making the African giant snail the staple snail in the world today. This snail is a variety that is more adapted to growing under natural conditions in my country. At present, the variety commonly cultivated in my country is called Baiyu Snail, also known as White Meat Snail, named Baiyu Snail for its snow-white meat color. It belongs to the phylum Mollusca, class Gastropoda, and terrestrial shellfish. It is hermaphroditic and is the best among all the edible snails in the world. The white jade snail is one of the special animals in my country. It has special value, special nutrition, special flavor, special use, thick meat, rich nutrition, high protein, low fat, rich in more than 20 kinds of amino acids, and is also the best tonic for astronauts and athletes. It is a variant of the agate snail. Its peculiarity lies in the different light colors of the muscles of the head, neck and feet, but it is no different from the brown cloud agate snail in morphology and living habits. The breeding method is basically the same, but the requirements for sanitary conditions during breeding are higher, and its export economic value is also higher.

Edit this section Living environment

Snails like to live in a dark, humid, loose and humus-rich environment. They hide during the day and come out at night. They are most afraid of direct sunlight and are sensitive to the environment. The most suitable environment is: temperature 16-30℃ (growth and development are fastest at 23-30℃); air humidity 60%-90%; breeding soil humidity is about 40%; pH is 5-7. When the temperature is below 15℃ and above 33℃, they hibernate. If the temperature is below 5℃ or above 40℃, they may be frozen to death or heat to death. They like to burrow into loose humus soil to live, lay eggs, regulate body humidity and absorb some nutrients, which can last up to 12 hours. They are omnivorous and partial eaters. They like humidity and are afraid of flooding. In humid nights, if wet food is put in, the snail's appetite is active. But flooding can suffocate snails. They survive by themselves. As soon as the baby snails hatch, they will crawl and eat, and do not need mother care. When attacked by enemies, its head and feet will retract into the shell, and secrete mucus to seal the shell opening; when the shell is damaged, it can secrete certain substances to repair the body and shell. It has a strong tolerance. Snails have amazing survival ability and have a strong tolerance to cold, heat, hunger and drought. They like constant temperature breeding. The temperature is constant between 25 and 28 degrees Celsius, and they grow and reproduce vigorously. When the snail crawls, it will leave a line of mucus on the ground. This is a liquid secreted by its body, so it will not be dangerous even if it walks on the edge of a knife.

Edit this section Lifestyle

excretion

Snails excrete near their breathing holes, called spiracles, and excrete feces on their bodies.

breathe

The snail's mantle cavity forms an opening at the shell opening, called the "breathing hole," which is where gases go in and out. If you look closely, you will see that the breathing hole often opens and closes, just like the snail's "nose" for breathing; and when the snail retracts into its shell, it will still leave the opening of the breathing hole at the shell opening for breathing. The mantle often forms a cavity that communicates with the outside world between the feet or visceral masses, called the "mantle cavity." The snail's respiratory organs are hidden in the mantle cavity. Sometimes through the snail's shell, you can vaguely see the dense network of pulmonary blood vessels under the shell, most of which are located on the front side, close to the head, which is exactly the location of the mantle cavity.

feeding habits

Snails have a wide range of food, mainly vegetables, weeds, melon and fruit peels; leaves, stems, buds, flowers, juicy fruits of crops; all kinds of green grass, highland barley feed, juicy feed, bran feed, and cake feed. Snails eat with their mouths.

Edit this section Features

If you put a normal snail (for example, a snail found on a tree after the rain) in a glass, cover the mouth of the cup with cardboard (you can put some water and leaves in the cup), and make a few small holes in the cardboard to keep the air flowing, the snails will crawl onto the cardboard. Leave the glass alone for a day and the next day you will find some black unidentified objects in the glass, which are the snail's feces. At this time, when you open the cardboard, you will find that part of the cardboard has been eaten, which gives you a creepy feeling.

Edit this section Growth and reproduction

Growth period

1) Incubation period: refers to the period from the eggs laid by the snail to the time when they hatch. 2) Juvenile snail period: Juvenile snails refer to the small snail stage within 30 days after the snails hatch. 3) Adult snail period: Juvenile snails are between 1 month and 6 months old. The 5-month-old snails are called adult snails. It is a period between juvenile snails and seed snails. During this stage, snails are growing and developing (individual expansion) and are also reproductively growing (growth and development of sexual organs). 4) Seed snail period: snails that have grown for more than 6 months.

Reproductive characteristics

When two snails meet, they touch each other with their tentacles, then face each other with their heads facing each other, their bodies connected, and their reproductive cavities connected. After a short pause, the reproductive parts suddenly reverse and insert the love arrow (penis) into each other's reproductive holes. Generally speaking, the mating time of snails is very long, and each mating takes about 2-3 hours, sometimes up to 4 hours. After mating, the fertilized eggs are produced outside the body through the reproductive holes. The eggs are laid in the soil several millimeters deep underground or under rotten wood and fallen leaves. The snail larvae develop in the egg shells, and the hatched larvae have become snails. 1. Snails are hermaphrodites, and they mate with different bodies. Both males and females lay eggs. The snail itself is both the father and the mother. The two snails cooperate with each other, and both sides repeatedly stimulate each other's reproductive holes with their love arrows (penis). After intense piercing movements, both penises are inserted into each other's vagina and ejaculate. Ten days after conception, both sides can lay eggs, and eight days later, the eggs can hatch into small snails. 2. The mating time is long, the egg laying speed is slow, and the difficulty is high. The mating time of estrus snails is as long as 2 to 3 hours each time, and some can last for more than 6 hours. Snails can lay 2 eggs per minute, and each egg laying time can last for 1 to 2 hours, and some can last for more than 3 hours. During the egg laying process, snails often die due to poor feeding, lack of nutrition, exhaustion and dystocia. Some of them die due to dystocia, accounting for about 30% of the total number of species of snails. 3. High reproduction rate. Each snail can lay eggs 6 to 7 times a year, and an average of 200 eggs can be laid each time. A species of snail weighing 35 grams can lay 120 eggs each time, a snail weighing 40 to 50 grams can lay 150 to 180 eggs each time; a snail weighing 60 to 100 grams can lay 300 to 400 eggs each time. 4. The reproduction of snails is not limited by age. Under the same suitable reproductive conditions, the larger the snail, the more eggs it lays. 5. Short life span. The life span of a snail is generally 5 to 6 years. Unsuitable living conditions will accelerate the death of the snail and shorten its life span. 6. Three slows, two fasts, one difficult, and one more. Three slows are slow movement, slow mating, and slow egg laying; two fasts are fast growth and fast shell shrinking; one difficult and one more are difficult egg laying and laying many eggs.

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