Scallop (scallop)
Also called escape, fan shell or comb shell.
Any of various marine bivalve mollusks of the family Chlamydae, especially the genus Chlamys. There are about 50 genera and subgenera and more than 400 species in this undergraduate course. Global distribution, found in intertidal zone to deep sea. The shell is fan-shaped, but the butterfly hinge line is straight, and there are wing-shaped protrusions at both ends of the butterfly hinge. The size is around 2.5? 15 cm ( 1？ 6 inches) or larger. The shell is smooth or has radiating ribs. The ribs are smooth, scaly or nodular, and the colors are bright red, purple, orange, yellow to white. The lower shell is lighter and smoother. There is a large adductor muscle. There are eyes and short tentacles at the edge of the mantle, which can feel the change of water quality. When it is opened, the shell is located between the two shells like a curtain. Scallops are usually found in sand or fine gravel in clean seawater. Feeding on tiny creatures. Food particles are collected by cilia and mucus and moved into the mouth. I can swim, jump intermittently with my double shells, spray water, and push myself forward by my own reaction. Eggs and sperm are discharged into water for fertilization. The hatched larvae swim freely, and then the larvae are fixed at the bottom of the water to develop, and some will crawl. After the larva is formed, the foot silk gland is used to fix on other things. Some are attached to life all their lives, while others wander freely in the middle.
Starfish is its most important enemy. It will be surrounded by wrists, its shell will be opened by the tube foot, and its stomach will be turned out to digest its soft body. Primitive people ate scallops and made utensils out of shells. In the Middle Ages, the pattern of the shell of the pilgrim scallop (P. jacobaeus) became a religious symbol (Chapter of St. James). Adductor muscle of scallop is edible, mainly produced in the northeast of George Shoal and Fendi Bay (New Brunswick-Nova Scotia) in Massachusetts. Sea scallop (Placopecten magellanicus) is produced in New England and eastern Canada. There are also common species here, such as bay scallop (Aequipecten bay scallop) and scallop (A. opercularis), which are edible shellfish in the British Isles and also used as bait.
Scallop has two shells, almost equal in size, and the shell surface is generally purple brown, light brown, yellow brown, reddish brown, apricot yellow, gray white and so on. Its shell is like a fan, so it naturally gets the name of scallop. The inside of the shell is white, and the muscles in the shell are edible parts. Scallop has only one adductor muscle, so it belongs to single-ring scallop. The adductor muscle is white, tender, delicious and nutritious. Obturator internus is sun-dried as "scallop" and listed as one of the eight treasures.
Widely distributed in all sea areas of the world, with the tropical sea being the most abundant. About 45 species have been found in China, among which Chlamys farreri in the north and one species in the south swim to avoid starfish predation. Chlamys farreri and sunflower with long handle are important economic varieties.