A crab. Also known as Scylla serrata. Shell was blue green, claws foot asymmetry, shallow water with low salinity habitat, is also one of edible crabs.
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The crab
The crab. Shell was blue gray, it said. Song Tao potential "Huai" Poetry: "sunrise coast sand and more fine points, endless white shrimp crab walk."
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No. 3
Scylla: also known as Scylla serrata; common name called sturgeon; Guangdong, said the Crab; Taiwan, Fujian, called red sturgeon; South Zhejiang called larva marine crab, mud crab, said the Philippines Latin Literature Name: scylla serrata Crab carapace oval, flat body, hairless, head and chest well developed, strong double claws, hind foot, shaped like Zhao, Zhao child called it evidence. Carapace width 1.5 times as long, the back of the bulge, smooth; carapace surface of the obvious "h"-shaped notch; forehead with four prominent triangular teeth, tooth size and spacing of roughly equal. Anterolateral margin with nine prominent triangular teeth similar size. Claws smooth, asymmetrical, right foot slightly larger than the left; palm section of swelling and smooth, the back with two ridge-shaped particles, each with their end of a spine. Three step foot on the toothless, knuckle before and after the edge of a brush-like undercoat. A crab, also known as yellow crab, also known as larva marine crab, Department of crustaceans, marine crab larva Section, the common name grub worms find marine crab, inhabit shallow coastal and coated in mud, usually painted with the tide into the mud, like burrowing in freshwater outflow place. Crab year round production, but three days of the eighth lunar month to under 23 year period, such as blue crab strong shield, round strong claws, are only just double skin, the public has the "August larva marine crab arrived chickens, "said. The famous poet Su in the "larva marine crab," a poem also written "half-shell with Wong Yi-point wine, two claws chop Snow advised snacks," a poem. Morphological characteristics of Scylla (A) the life habits 1. Habitat Habit 2. Habitat conditions Scylla is a wide temperature euryhaline marine crabs, the survival temperature 7 ~ 37 ° c, suitable for the growth temperature of 15 ~ 31 ° c, the optimal water temperature is 18 ~ 25 ° c, 15 ° c below, the growth slowed down, the water temperature dropped to 7 ~ 8.5 ° c, stop feeding and activity, sleep and live in a cave state. Temperature stabilized at 18 ° c above, start spawning female crabs, crab frequent shelling grew up, the water temperature rose to 37 ° c or more, the crab is not feeding, the water temperature rose to 39 ° c, the crab carapace appeared gray-red spots, the body gradually aging death. Crab survival salinity 2.6 ‰ ~ 55 ‰, to adapt the range 6.5 ‰ ~ 33 ‰, the optimal salinity of 12.8 ‰ ~ 26.2 ‰ (specific gravity 1.010 ~ 1.021). Scylla difficult to adapt to dramatic changes in salinity, salinity mutations cause "Hongmang" and "Pak Mong," the two diseases and even death. Therefore, the annual rainy season, due to a short burst of heavy or continuous rainfall, artificial pond salinity mutation, so crab mortality. Ability crab resistance to dry away from water as long as there is a small amount of water in the gill cavity, gills moist, can survive for several days or few weeks. 3. Crab's diet Crab's diet is very complex, with animal-based foods. Diet composition in molluscs and small crustaceans mainly in the stomach contents often bivalve shell edge, twisted fragments of the Ministry, the operculum of gastropods, incomplete screw shaft, side and head crab's body parts carapace fragments. Often the beach crab-eating worms, but also eat small fish, shrimp, and sometimes also found in the stomach plant stems and leaves debris. Farmed crab, no strict _select_ion of bait, a small trash fish, shrimp, small shellfish (clams, blue, look's muscle clams, Corbicula fluminea, snail snails, etc.), soybean cake, peanut cake can be for food, crab have similar habits to kill each other, often preying on the soft shell crab just shelling. (B) the breeding habits Crab's breeding season is longer, but vary, Guangdong, February to April each year, and 8 to 9 months, of which 2 to 3 months for the peak; Fujian Xiamen from March to October, Zhejiang Province from April to October. Late May to June and late August to September is the peak breeding; Shanghai from September to October, Taiwan is almost year-round breeding. Scylla is generally a year of sexual maturity. General carapace width 8 cm and weighing 150 grams or more of the female crab will be able to mate. Before mating, the female reproductive shelling crabs first in its new shell has not hardened before mating with male crab, mating time for 1 to 2 days. During the mating crab no appetite, even if feeding is not eating. After mating, sperm storage in the female crab is satisfied within the seminal vesicle, survived for several months. Mature female crab eggs through the fallopian tubes to the sodium seminal vesicles and sperm, fertilized egg that is then excreted by the female gonopore on the adhesive _set_ae on pleopod. Yellow eggs discharged early, this time the female crab has become the spawning numerous negative crab eggs. Spawning female crabs about two million or so, but the hold of the egg is only one part. Female crabs in the water than wide, slow water, clean place to lay eggs, the female crab in the estuary of life to move the sea to spawn, so the crab in the reproduction of natural waters often to offshore a short distance, "distant travel" to the depths of the production eggs. Hatched larvae to the shore with the tide, and later in the intertidal zone, feeding the growth of swamp. Zhejiang coast every May be able to catch a width of 1-2 cm crab. Sea crab concentrated in late June to early July (plum crab) and mid-September to October (autumn crab). Larval development is divided into zoea and megalopa two phases, totaling shelling metamorphosis six times before the first juvenile crab, which lasted about 23 to 24 days. Identify disease crabs from the base of the pereiopod muscle to determine the color of their flesh was blue, limb and joint muscles do not sag, flexible person is healthy seedlings, such as muscle red or yellow with white spots, limb and joint _set_tlement between the muscles, inelastic, for the sick Into certain aspects of the animal (such as Nereis) and small benthic crustaceans, since the fan capacity, mud crab and eating, these are good live mud crab bait. In addition, small miscellaneous fish and freshwater shellfish species (eg, snail), artificial bait such as a lack of bait when the supplement.
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Recipe Information
Nutritional Analysis Scylla is rich in protein and trace elements, have a good body tonic. The crowd General population can eat 1 suitable for bruises, broken ribs Gusui, bleeding swelling of the human consumption; suitable residual maternal placenta, or pregnant women in labor array contraction and weak, those who consumed less than the delay fetus, especially crab claw as well; 2. Usually spleen and stomach, loose stools thin, faint pain of people not eat; cold cold healed, or places suffer from wind diseases, including diseases of intractable pruritus people eat; menorrhagia, dysmenorrhea, pregnant women avoid Fresh crabs, especially not eat crab claw. Grams of food Crabs can not be with sweet potatoes, pumpkin, honey, oranges, pears, pomegranates, tomatoes, melons, peanuts, snails, celery, persimmon, rabbit meat, Nepeta with food; eat crabs can not drink cold drinks can cause diarrhea. Not with the tea with food, extend their time and extend their bogey within 1 hour after tea water. Cooking guide 1 in cooking crabs, it is desirable to add some basil leaves, fresh ginger, to relieve crab poison, by the cold; 2 crabs can be used to steaming, boiling, deep-fried snack sandwiches or system; 3 steamed crab crab should be tied to prevent the flow of steam after the yellow legs and out; 4 raw crab shell, first scalded with boiling water 3 minutes, this crab is easy to remove, without waste; 5. Do not buy crabs after washing with water into a clean tank, altar, broke the shell with brown rice add two eggs, then sprinkle with two black sesame seeds to cover submerged crab, then use cotton blindfolded Gangkou, so that air can flow, but can not make the crabs see the sun, so keep about 3 days out, the crab absorbs meters, egg nutrition, sturdy crab belly that is full, repeat the marked increase in fat tastes delicious beauty. Therapeutic effect With a strong back and kidney, spleen consumer product, the effect of uneasiness of mind. Other "Compendium of Materia Medica" in there reads: "sturgeon, sea reptiles, the flesh of fresh white, with a strong back Jianshen, Spleen Yang Xin Gong, together with the Codonopsis, longan, better efficacy." Remarks 1 crab salty cold, but also scavengers, so when you eat ginger vinaigrette will dip to dispelling the sterilization, not a single food. 2 crab's gills, sandbags, contains a lot of gut bacteria and toxins must be removed when eating. 3 crab or salted crabs should not eat undercooked crabs should be steamed cooked before eating; stored for too long should not be eaten cooked crab; crab is fat is ripe persimmon season, attention should avoid crab and persimmon mixed eat. 4. Scylla _select_ion: (1), raised crab, crab jagged look at the top of the backlight, if it is completely opaque, indicating that more fat is full, on the contrary, it is not full; (2), crab bottom of the white or transparent, just for completion on behalf of crab shell. Crab because most of the energy consumed when shedding, so usually not much meat; the bottom of the dirty meat more often full of fat; 5 crabs washing: first in the crab bucket into a small amount of liquor fishy, so when the unconscious little crab on the back of the crab with a spatula halo pumping, hand it back quickly to seize, take into the brush toward the already planar crab abdomen fierce brush, do not miss the corner. After checking there is no mud thrown into another bucket, rinse with water can. 6 crab meat is delicious, nutritious, but not eat the dead crabs because crabs eating rotting animal carcasses and other substances, it is often with their gastrointestinal pathogenic bacteria and toxic substances, once dead, the large population of these bacteria; Ling Wai, crab body also contains more histidine, histidine Yi decomposition can be decarboxylase under the action of histamine and ammonia clusters substances, especially when the crab died, histidine decompose more rapidly, with the longer the dead crab, the group of ammonia accumulate more savings when _set_ to a certain number of ammonia that can cause poisoning.
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English Expression
lat.: scylla serrata
Thesaurus
Delicacy Be leisurely and carefree Crab, blue crab Juyuanqingxun, qingxun, mud crab, mangrove crab, shagong, rouxie, zhaxie, huangjiaxie, swimming crab, (hairy sea-crab), scylla serrata, acipenser sp., green crab, hongxun