CATDOLL : CATDOLL: What kind of temperature influences weed crabs’ migration?

The migration of weeds according to temperature changes is a natural phenomenon.

The best time for crabs to appear is on hot and humid summer nights when it is about to rain. At this time, the atmospheric pressure is very low, the oxygen content in the cave is reduced, and the crabs feel uncomfortable due to lack of oxygen, so they crawl out of the cave one by one to breathe fresh air.

Wedeli are small freshwater crabs. Also known as grinding crabs and crabs. In rural areas, they are commonly known as duluzi, small crabs, etc. The carapace is slightly square, the body is 2-3 cm wide, the back is blue-brown, the feet are hairless, the large claws are very thick, and the inside of the lid is yellow. The male chelicerae are larger, while the female chelicerae are smaller. The chelicerae are hairless, and the walking legs are hairy. The scientific name is Sesamus. Crustacea, Scutidae. The carapace is slightly square, and the body is 3-4 cm wide.

Crabs like to eat humus, mainly microorganisms in the river, purple mud and small shells. They also use their claws to clamp rice leaves to absorb juice. They have strong ability to dig holes and walk fast. They are common small crabs in the water. They mainly live in caves at the river estuaries, ditches, etc. or in tidal flats and wetlands near the sea. They live in groups in reeds on wet and muddy beaches. They are burrowing hibernating animals and hibernate in caves before the beginning of winter every year.

After the crabs are shed in the middle of the second year of the Spring Festival, the food in their stomachs has been emptied, and the crab roe and meat have gradually become plump. At this time, the meat is tender and the roe is like solidified fat. The roe of crabs pickled with salt or shrimp oil is black, and the nutritional value is very high. It has always been regarded as a precious delicacy. Most people like to eat it pickled with salt or wrapped in sauce. It is a good side dish for drinking and a good cooking product.

Wedeli are small freshwater crabs. Also known as grinding crabs and crabs. Their scientific name is Sesami crabs. They belong to the class Crustacea and the family Scutidae. Their carapace is slightly square and their body width is 3-4 cm.

Basic Information

Chinese name

Weeds

Foreign name

Sesarma

Harvest time

Summer catch

Drug travel delay

Small poison (Supplement to Materia Medica)

Distribution

Liaodong Peninsula, Jiangsu, Fujian, etc.

Historical records

[Other name]: Liyun crab is also called: Liyun crab

The word "li" comes from "The Analects of Confucius - Yang Hu" ("Li, li, what about jade and silk? Music, music, what about the morning bells and drums?"), Crab ("Jiyun")

The male has larger chelicerae, while the female has smaller chelicerae. The chelicerae are hairless, while the walking legs are hairy. They often live in caves on river banks and ditches. They like to eat humus and also use their chelicerae to break rice leaves and suck out liquid. They have strong burrowing ability and walk fast. They are common small freshwater crabs. Weed crabs are shaped like small crabs, and the larger ones are as big as a thumb.

It is also called Liyun because its two large claws resemble the ancient people's "bowing hands in greeting".

Distributed in Liaodong Peninsula, Jiangsu, Fujian, Taiwan, Guangdong, Zhejiang coastal areas, etc. Originated in the inner river of Fuzhou Chaiju, living in small holes in the mud beside the river. Good at climbing trees.

Living habits

Weeds are small crabs. Crabs are meat eaters, but weeds are vegetarians. In summer, weeds eat reed leaves, which smell like grass. Weeds in summer are not normally eaten. We catch them and use them as fertilizer. On the reed beach, we surround the weeds and drive them to the middle. The weeds crawl into a pile and are quickly put into sacks. When we take them home, the weeds are already dead. Put a weed between every four rice seedlings. Three days later, the rice seedlings grow wildly. In winter, weeds hibernate in their holes. At this time, they no longer eat and can be eaten if you dig them out with a shovel.

edible

Local characteristics

Drunken Crab

Drunken Crab

1. Liyunzi, a Guangdong delicacy, is popular in Guangzhou, Guangdong. It refers to a sauce made only from weed crab seeds. "Xia La" is the local name for a type of small crab given by farmers in Shatian Town, Dongguan City and citizens of Guangzhou. "Xia La" is different from weed crabs. Those that are referred to as weed crabs by people in Guangzhou and the Pearl River Delta have thick shapes, hard shells and strong claws, and people in the county will not use them for cooking. Although "Xia La" is similar in appearance, it is slightly flatter in shape, softer and thinner in shell, and thinner in claws. Since people in the county cannot express its name accurately, they also attribute it to the family of weed crabs. In the past, there were many weed crabs and "Xia La" in the fields in the countryside, which were rampant and caused disasters to rice fields. According to Qu Dajun's "Guangdong Xinyu", "the fields near the sea in Guangzhou are rich in weed crabs, and eating grain sprouts every year is a harm to farmers", which seriously affected the livelihoods of farmers. Farmers could not catch them all, so they had to rely on raising ducks to eat them. This has formed a good agricultural ecological cycle - the ducks eliminate pests and fertilize themselves, and the duck manure is used to fertilize the fields.

A "shrimp chili" has only a seed ball like a soybean. How many shrimps are needed to make a large bowl of "sauce"? The farmer answered: "One jar." It turns out that the vigorous "shrimp chili" must be sorted into male and female first. After the female is put into a large wine jar and drowned with water, the lid is opened one by one and the seeds in the belly are squeezed out. Without one or two thousand live shrimps, you can't squeeze out a bowl of fresh "shrimp chili spring (seeds)". Several peasant women struggled for a long time with the bowl of "shrimp chili sauce" that day, and all of them had broken hands and fingers. This kind of natural product can be called the best delicacy in the field and the essence of top farm dishes. The delicious taste is incomparable to seafood and river seafood. Chewing it in silence, the sound of it breaking in the mouth is like the sound of nature, and it is really "the most delicious in the world".

The scientific name of this little creature is "Senzaurs". Because it is used to walking sideways, it occasionally walks straight with its two front claws clasped together, bowing its head with each step, swaying and polite, just like the ancients performing a ceremony and bowing. Therefore, the literati and gourmets named it "Liyun" based on the ancient Chinese sentence "Li Yun Li Yun, Yu Bo Yun Hu Zai", and its eggs naturally have a brocade-like name: Liyunzi. The ones produced in Panyu are the best. This delicacy is high in protein and fat.

Nowadays, the natural environment is deteriorating, farmland is becoming less and less every year, and due to the heavy metals in pesticides, fertilizers and water quality, the crabs and "shrimp chili" have been drastically reduced and become precious. Not to mention that they harm farmland, it is not easy to catch them for cooking, let alone asking the chef to break his hands and fingers to squeeze out the seeds and steam a dish of authentic "shrimp chili sauce". Now the restaurants in the market can only mix crabs and "shrimp chili" at most, scoop out the seeds and meat with a spoon, and serve them with steamed eggs, rice, or mix them with egg white and tofu pomelo peel as a rare and top-quality embellishment. Although it is still respectfully called "Liyunzi", how can its fresh and "flavorful" and smooth taste be compared with the original "shrimp chili sauce" of the past?

2. It is a condiment for Fuzhou's special cuisine. The hardworking farmers in the Minjiang River Basin in Fuzhou catch crabs on the clean river bank during their slack season, clean them with clean water, remove the tails, add rice wine, lees, monosodium glutamate, sugar and other auxiliary materials, grind them into sauce, and add appropriate amount of salt to make a delicious condiment.

In Fuzhou, crab sauce is a must-have at wedding banquets, and its delicious taste is unforgettable.

3 Others,

Crab crisps and crab sauce are regarded as the special flavors of Fuzhou people. Folks who have lived abroad for decades still miss these two foods. Canned crab crisps and crab sauce produced by Fuzhou Mintian Group have become good gifts for Fuzhou people to entertain or give to relatives and friends overseas.

Weed crabs are small black, hairy crabs that grow in paddy fields. Locals catch them to make sauce: they are pounded with sand and stone, and then added with scorched rice (rice crust), and fermented in a vat.

Steaming pork with it, especially steaming transparent fat pork, has a special aroma (Yangjiang people call this special aroma "game flavor"). Nowadays, crab salted shrimp paste has become a rare thing. It can be bought occasionally in the market, but it is only a thin juice, not a sticky sauce; some restaurants also sell it, but the aroma is very light, not as strong as before. (Guangdong)

Cooking Method

Weeds

Weeds

Crabs mature in autumn and winter, and are caught to make crab crisps and crab sauce. Some are caught by children for fun, tied with ropes and placed on the ground. White foam comes out of the crab's mouth, just like rice cooking in a pot. Therefore, the children sing: "Cook crabs for the son, the son goes to the street to beg for food..." In the past, there were crabs on the banks of the inner rivers of Fuzhou, and fishing for crabs was a great pleasure for children. When I was a child, I played a crab fishing competition with my friends, and I still remember it vividly.

Wash and chop the crabs, add salt, sugar, red wine lees, sorghum wine and other seasonings, marinate for several days to make crab crisps. The value of crab crisps lies in their crispness. It is said that adding sorghum wine makes them even crispier and more fragrant. The ingredients of crab sauce are the same as those of crab crisps, but the production method is different. After chopping, they are put into a stone mill and grind into sauce. Crab crisps and crab sauce are both raw foods, and whether they are hygienic has not been verified. Crab crisps can be eaten alone, used for breakfast with porridge or as a side dish for wine. Crab sauce is used as a condiment to dip fried fresh fish, and it tastes more meaty than soy sauce and shrimp oil. Jellyfish skin h (dipping) crab sauce is one of the delicacies of Fuzhou, rich in local flavor. Nowadays, high-end restaurants often include the crab crispy dish when designing the "six-covered plate", and some guests must order it at every banquet.

Pickling

People in Chaozhou and Shantou like to pickle it with salt and soy sauce and use it as a side dish. Although there is very little meat, it tastes excellent.

Compared with crabs, crabs are smaller and have less meat. When heated, the meat shrinks and all that remains is the shell. The best way to eat crabs is to make drunken crabs. The method is very simple:

Clean the fresh crabs carefully with a brush, rinse with cold water, and place them in a container with a lid of suitable size; pour in strong liquor (such as Red Star Erguotou), immerse the crabs, add a little sugar, salt, ginger shreds, cover and soak; turn up and down every hour so that all the crabs can be fully pickled and sterilized; after about 7-8 hours of pickling, drain the liquor, add onions, ginger, a little high-quality fresh soy sauce, sprinkle with pepper, stir well and it can be eaten. It tastes delicious, has a natural color, and the meat is tender. Although it is eaten raw, after being highly drunk, the bacteria have been killed and the meat has lost its raw smell, which is suitable for both wine and rice.

This method is generally applicable to all fresh seafood and some river seafood, such as "drunk crabs", "drunk shrimps", "drunk snails", "drunk clams", "drunk fish", etc. However, please note that the raw materials must be absolutely fresh, and the individual pieces cannot be too large, otherwise they cannot be soaked thoroughly. In addition, all the utensils used in the production should be sterilized.

Medicinal

Chinese herbal medicine

[Source] "Collected Annotations to the Classic of Materia Medica"

【Pinyin name】Pén Qi

[Alias] Crab (Jiyun)

[Source] The meat, viscera and fat of the toothless crab of the family Sesarmaidae or its closely related animals.

【Original form】The whole body is covered with a hard carapace. The cephalothorax is about 3.8 cm long and 4.4 cm wide; it is square. The forehead is wide, larger than 1/2 of the width of the cephalothorax, with a wide depression in the middle of the front edge, and 4 parallel protrusions on the back of the forehead. The eyes have short stalks and are movable; the teeth of the outer eye sockets are triangular, and the dorsal eye socket margin is smooth and very concave. The side margins have smooth ridges and no teeth. There is a pair of chelicerae, with a thorn near the end of the dorsal margin of the long segment; there are scaly granules on the outer surface of the palm segment, and a granular ridge on the dorsal margin. There are 4 pairs of walking legs, densely covered with hard bristles of varying lengths. The abdomen is degenerate, and the male and female are dimorphic, triangular in males and round in females.

[Habitat distribution] Lives on river mudflats, burrows on river banks or ridges. Distributed in Liaodong Peninsula, Jiangsu, Fujian, Taiwan, Guangdong, etc.

【Nature and flavor】

① "Bencao Shiyi": slightly poisonous.

② "Compendium of Materia Medica": salty, cold, and poisonous.

【Function and indications】

① "Bencao Shiyi": Ointment: Apply it to those who suffer from eczema and carbuncle that do not heal.

② "Bencao Qiuyuan": can cure puffer fish poison.

Chinese Herbal Medicine II

[Source] From the Annotated Compendium of Materia Medica. The Supplement to Compendium of Materia Medica states: Eating crab meat can cause vomiting and diarrhea.

【Pinyin name】Pén Qi

【English name】Amphilbious Crab, Brackish-water Crab

[Other name] Crab

【source】

Medicinal material source: The fat or meat of the toothless crab of the family Quadraca and its closely related animals.

Latin plant, animal and mineral name: Sesarma dehaani H. Milne- Edwards.

[Original form] The toothless crab has a square cephalothorax, which is generally 39mm long and about 44mm wide. The stomach, heart, and liver regions all have some ridges, and the middle gill region has 4-5 oblique ridges. The forehead is larger than 1/2 of the width of the cephalothorax, with a wide depression in the middle of the front edge, and 4 parallel protrusions in the back of the forehead. The outer eye is triangular, and the dorsal eye socket edge is smooth and very concave. The lateral ridges are smooth and toothless. There is a thorn near the end of the long segment of the claw foot, the inner end of the carpal segment is blunt, and the outer surface of the palm segment has scaly granules, and the dorsal edge has a granular ridge. The phalanges are few and the palm segment is long. The movable fingers are bent, and the gap between the two fingers is small. The walking legs are densely covered with hard bristles of varying lengths. The abdomen of the female is round, and the abdomen of the male is wide and triangular.

【Habitat distribution】

Ecological environment: Lives on muddy banks of rivers, and in burrows on river banks or in ridges of fields.

Resource distribution: Distributed throughout my country's coastal areas.

【Properties】The body fat content varies with the seasons. In October, due to reproduction, the content is relatively low, and then gradually increases, reaching the highest value at the end of December, and gradually decreases after hibernation. It gradually increases in April. In May, due to reproduction, it drops to an extremely low level. During the entire wintering period, the fat content of females is often higher than that of males, and after reproduction, they begin to approach. Blood calcium (before molting) is 75mg%.

【Nature and flavor】Salty; cold

【Meridian】Spleen meridian

【Function】 Clears away heat and detoxifies; removes dampness and relieves itching. Mainly used for carbuncle, swelling, sore, itching caused by dampness and ringworm

【Usage and Dosage】Oral use: appropriate amount, cook thoroughly. External use: appropriate amount, apply the ointment.