How do scallops reproduce?

How do scallops reproduce? Scallop is actually a male and female community. Its growth and development is very fast, it begins to cultivate seedlings in spring every year, and the gonads of scallop can mature in autumn, which can be used as parent scallop to collect eggs and cultivate seedlings. The gonad of the scallop is in the abdomen, the testis is located at the edge of the abdomen, it is milky white at maturity, and the ovary is located on the inside of the testis. It becomes brownish red when it matures, and there is usually a layer of black membrane on the surface of the gonads. When the gonads gradually mature, the black membrane gradually disappears, and the testis and ovaries can be clearly seen.

When the gonads of scallops begin to develop, be sure to maintain a good temperature and give them plenty of food. This can promote the early maturation of gonads and release sperm and eggs. In the northern seaside, scallops have only one breeding period a year.

In northern China, scallop has only one breeding period every year, about 3-4 months, and the water temperature is 5 °C-9 °C. Other scallops have two breeding seasons every spring and autumn. For example, the spring of scallops is from May to June, the water temperature is 14 °C-16 °C, and the autumn is September, and the water temperature is 22 °C-21 °C. Bay scallop spring is from June to July, the water temperature is 20 °C-23 °C; autumn is from September to October, the water temperature is 20 °C-18 °C. From May to June, the water temperature of Huagui spring scallop is 20 °C-21 °C; in autumn, it is lO- November, and the water temperature is 26 °C-22 °C.

After fertilization, the ontogeny of scallop eggs is basically the same. Take the self-development process of bay scallop as an example. The spermatozoa of scallop were fertilized in seawater at a water temperature of 20 ℃. The first polar body appeared at 10-ZO minutes after fertilization. It develops into larvae within 17 hours and D-type larvae within 20 hours, that is, initial larvae. At this point, the yolk runs out and begins to eat. At the developmental temperature, the higher the temperature, the faster the development.