[1-2][Scientific name]Amazonian smail;Ampullaria gigas spix

[3][Place of origin]All over the country

[Habitat]Streams, ponds, paddy fields

[Size]7cm or so

[Classification]Class Mollusca, Gastropoda, Mesogastropoda, Apple Snail, Bottle Snail

[Description]Native to Argentina, the eggs are bright red and often attach to the shore.

[Alias]Pomacea canaliculata Lamarck

Edit Morphological Characteristics

The whole body of the Pomacea canaliculata consists of five parts: the head, the foot, the visceral capsule, the outer coat and the shell. The head is cylindrical, with a pair of anterior and posterior tentacles, and the eyespots are located at the base of the posterior tentacles

The golden snail part, and the mouth is located on the ventral surface of the muzzle. The ventral surface of the head is a fleshy foot, which is wide and thick enough to crawl on the pool wall and plant stems and leaves. The shell is short and round, large and thin, the shell is rotated right, there are 4 to 5 conch layers, the body conch layer is expanded, the spiral part is very small, the shell surface is smooth, mostly yellowish brown or dark brown. The umbilical aperture is large and deep, the operculum is a brown horny sheet with concentric growth lines, and the nucleus of the operculum is biased to one side of the conchial axis. The coat membrane is thin and transparent, wrapping the entire visceral sac, and there is a thin film-like lung sac on the dorsal surface of the coat cavity, which can directly breathe oxygen in the air and has the function of assisted respiration. The lung sac is inflated to enable the snail to float on the surface of the water, and when it encounters disturbance, it will expel gas and sink rapidly. The male snail's reproductive pore opens at the tip of the copulatory apparatus, and the female snail's reproductive pore opens in the outer coat cavity.

Life habits: Fukushu snails like to live in fresh water, sufficient bait in fresh water, more clusters in shallow water around the edge of the pool, or adsorption in the aquatic plant stems and leaves, or floating on the water surface, can leave the water for a short period of time to live. The optimal water temperature for growth is 25 to 32 ℃, more than 35 ℃ growth rate decreased significantly, the highest critical survival water temperature of 45 ℃, the lowest critical water temperature of 5 ℃. Fukushou snail has a wide range of diet, is an omnivorous snail with plant-based bait, mainly eating duckweed, vegetables, fruits and melons, etc., especially like to eat food with a sweet flavor. Artificial feeding conditions, like to eat corn, bran and other concentrate feed, young snails to fine pimple, humus, concentrate feed. Under starvation, adult snails will also eat young snails and snail eggs. Golden snail (6)

Edit Reproductive habits

Flounder snail for dioecious, in vivo fertilization, in vitro development of oviparous animals, good feeding conditions, 3 ~ 4 months of age up to sexual maturity. March to November each year for the breeding season, including May to August is the breeding season, the appropriate water temperature of 18 ℃ ~ 30 ℃. Mating is usually carried out in the water during the daytime, the time is up to 3 ~ 5 hours, a fertilization can be multiple spawning, 3 ~ 5 days after mating to start spawning, the female snail at night climbed to the water surface 15 ~ 40 cm from the wall, stakes, aquatic plants on the stems and leaves to lay eggs. Eggs are round, pink, and about 2 millimeters in diameter. Eggs adhere to each other into a block, each spawning a piece of 200 ~ 1000, spawning lasted 20 ~ 80 minutes. After the end of spawning, the female snail abdominal feet back, dropped into the water, after an interval of 3 to 5 days, the second spawning, a year can be spawned 20 to 40 times, the amount of egg production of 3 to 50,000 grains, fertilized eggs in the air incubation takes 10 to 15 days, the development of young snails rupture the membrane and out, dropped into the water.

It is an omnivorous snail with plant-based bait as its main food, such as duckweed, vegetables, melons and fruits, and it especially likes to eat food with sweet flavor.