Brief introduction of pomacea canaliculata
Pomacea canaliculata, a mollusk belonging to the genus Ampullaria of Ampullaria, is very similar in appearance to river snails, with large size, wide feeding habits, strong adaptability, rapid growth and reproduction, and high yield. Eating inadequately heated snails may cause human bodies to be infected with parasites such as Angiostrongylus cantonensis. 198 1 was introduced into China and has been included in the first batch of alien invasive species in China.
Its meat is edible, but it tastes bad, so it is not liked by people. In addition, it is also the feed for some precious aquatic animals. Pomacea canaliculata is large in size, wide in feeding habits, strong in adaptability, fast in growth and reproduction, and high in yield. It is cultivated all over China. Eating inadequately heated snails may cause human bodies to be infected with parasites such as Angiostrongylus cantonensis. Eating raw or incompletely heated snails can cause infection, which can cause headache, fever, stiff neck and other symptoms, and even cause dementia and even death in severe cases. So when eating snails, you must pay attention to thorough heating.
Report on eating Ampulla canaliculata
Two people in Beijing were diagnosed as Angiostrongylus cantonensis after eating "spicy snails" and "cold snail meat".
The patient had a headache for two weeks. In serious cases, his head cannot be shaken. When he walked, sat down and rolled over, his headache got worse. At the same time, I feel stiff neck, limited activity, accompanied by fever, fatigue and other symptoms. After detailed examination by hospital experts, it was unanimously diagnosed as Angiostrongylus cantonensis.
According to experts and professors from South China Agricultural University, each snail contains as many as 3,000 to 6,000 Angiostrongylus cantonensis larvae. Mild infected people will have mild headache and low fever, and severe cases will have serious nervous system diseases. After the diagnosis, the patient was treated with albendazole and other drugs. It is suggested that people who have eaten snails such as Ampullaria gigas should seek medical attention as soon as possible if they have abnormal reactions and discomfort.
Farmland in Yongzhou, Hunan Province has also been discovered recently.
The difference between ampulla of tubule and ampulla
1, living environment
I don't think it makes any difference. They all prefer non-torrent water system and have strong adaptability to the environment. They often have snails in streams or puddles where there are no fish. One difference I'm not sure about is that river snails/stone snails prefer clean water systems, while pomaceans are not afraid of dirt, but this is only relative.
2. Growth process
A friend said earlier that snail eggs are transparent and have jelly-like carriers, which are generally submerged in water; The eggs of Ampullaria canaliculata are pink and usually attach to plants on the water surface. After the snail breaks its shell, the egg turns white and broken.
3. Appearance differences
That's the point.
Generally speaking, the ampulla is very small, mostly 1- 1.5cm, while the ampulla is large.
In addition, the snail shell of Ampullaria gigas is very fragile, which can be easily crushed by hand and properly broken when it falls to the ground; But the snail shell is hard, not only not fragile, but also difficult to crush by hand.
There is another difference, that is, the difference between snail meat: the tentacles of Ampullaria canaliculata are thin and long, while those of Ampullaria canaliculata are short and thick; The mouth of Ampullaria canaliculata is slightly petal-shaped and has two "beard"-shaped organs (equivalent to two pairs of antennae), while Ampullaria canaliculata is a cylinder (1 pair of antennae). Snails generally eat food, while snails only suck rocks or glass walls.