Patinopecten yessoensis is a large cold-water shellfish, which is native to Japan, southern waters of Kuril Islands in Russia, Hokkaido in Japan and northern Honshu. The growth rate of scallop Patinopecten yessoensis is slow, and the shell is larger, reaching more than 1 cm. The left shell is slightly flat, slightly smaller than the right shell, and is often purple-black. The right shell is protruding, yellow and white. The front and rear ears are the same size. There are 15 ~ 2 radiating ribs on the shell surface. Generally, the left shell dives into the seabed horizontally, and there are no spines on the ribs. Patinopecten yessoensis is distributed on the seabed with hard bottom and little silt. The natural distribution water depth is 6-6m, and the growth temperature ranges from 5-2℃. About 15℃ is the most suitable growth temperature, and the growth is slow below 5℃, and the movement slows down sharply until it stops at ℃. When the water temperature rises to 23℃, the living ability gradually weakens, and after exceeding 25℃, the exercise will soon stop. Patinopecten yessoensis is a high-salt species, the suitable salt range is 24‰-4‰, and the salinity should not be lower than 24‰.

Patinopecten yessoensis is an important species of shellfish products in recent years, and its protein composition of obturator muscle is special. According to analysis, it contains 63.7 grams of protein, 3 grams of fat, 15 grams of sugar, 47 milligrams of calcium, 886 milligrams of phosphorus and 2.9 milligrams of iron per 1 grams. Scallop is rich in unsaturated fatty acids EPA and DHA. EPA can greatly reduce thrombosis and arteriosclerosis. DHA can not only promote intellectual development and improve IQ, but also reduce the incidence of Alzheimer's disease. A glycoprotein extracted from the adductor muscle of scallop has the effect of destroying cancer cells. In addition, scallop also has the functions of nourishing yin and tonifying kidney, and has a good curative effect on diseases such as weakness, loss of appetite and malnutrition. . Shrimp scallops bring you the taste of the sea and bring you delicious and healthy.

Zhangzidao is China's largest bottom-sowing area for scallop, with 2, square kilometers of marine pasture, and it is the largest marine pasture in the world. The bottom-sowing proliferation is different from artificial breeding methods such as floating logging. Every year, during the sowing period of scallop, the young scallop is directly sown on the seabed with a depth of 2-5 meters, allowing it to grow in the wild for three to four years, and trawling is started. Zhangzidao sea area is located at 39 degrees north latitude, belonging to the Yellow Sea waters. The seawater is not only clear by visual inspection, but also has a visual depth of more than 1 meters. It is a first-class water area in water quality inspection, and the products in this water area are selected for the on-off inspection of Chinese shellfish entering the American market and the European market.

sea island scallop production base is located in sea island, Changhai County, Dalian, with smooth water flow, rich nutrients, stable physical and chemical factors of seawater, low temperature, clarity and high salinity all year round, which is the most natural and ideal place for scallop growth. Due to the superior geographical location and water quality conditions in the culture sea area, the risk of environmental pollution and natural disasters is small. sea island scallop is well-known at home and abroad for its large size, fat shellfish, full granules, delicate meat and delicious taste.

is a filter-feeding bivalve, with fan-shaped shell, prominent right shell, yellowish white, slightly flat left shell, slightly smaller than right shell, and purplish brown. There are 15-2 radial ribs on the shell surface, and there are shallow foot holes on both sides of the shell ear. The right shell ribs are wide and low, and the ribs are narrow; The ribs of the left shell are thinner and the ribs are wider. There is a triangular internal ligament under the top of the shell. The natural distribution water depth is 6-6m, and the bottom material is gravel. Patinopecten yessoensis is a cold-water shellfish, and its growth temperature ranges from 5℃ to 23℃. It is mainly produced in the southern waters of Kuril Islands in Japan and Russia, Hokkaido in Japan and the northern part of this continent. The suitable salinity range is 24-4, which is distributed in the coastal waters with high salinity, hard bottom without fresh water injection, less silt and water depth of less than 4m. It is mainly cultivated in Liaodong Peninsula in northern China and Long Island in Shandong Province. The growth rate is slow, from the young shellfish to the shell height of 1l--12 cm, the shortest time takes 1 year and 7 months. According to records, the maximum shell height can reach 27.94 cm, and its life span is about 25 years.

The breeding season of scallop Patinopecten yessoensis in northern China is from March to April, and the spawning temperature is 3-1℃. The female: male ratio of natural population is about 6:4. The fertilized eggs of Patinopecten yessoensis continued to develop after fertilization in seawater, and the shell length of type D larvae was 11-12 μ m in the early stage. After the stage of floating larvae, when the average shell length of larvae reaches 22-24 μ m, eye spots appear, and then metamorphosis occurs. The juvenile shells are as long as 3-4 cm, and the foot silk glands degenerate.