Shrimp, also known as Artemia, belongs to Arthropoda, Crustacea, Branchiopoda, Anura, and Artemia. Harvest shrimp is widely distributed in salt fields or salt lakes on land, and its nutritional value is very high for artificially cultured fish and shrimp. The winter eggs of bumper shrimp, a special kind of resting eggs, can be dried in the sun, canned, sold on the shelves in the form of commodities, and can be easily hatched. As high-quality live bait, bumper shrimp is widely used in aquaculture.

Knowledge of bumper shrimp

There are two reproductive forms of bumper shrimp: parthenogenesis (parthenogenesis) and bisexual reproduction, both of which can give birth to viviparous nauplii or ovulate directly. In the case of direct ovulation, the eggs laid are divided into summer eggs and winter eggs. After the summer eggs are laid, they quickly hatch into nauplii in water, which is basically the same as the viviparous nauplii laid directly by the mother. While the winter eggs are resting eggs, generally, when the living environment of the bumper shrimp changes greatly, such as cooling, the proportion of seawater drops, food shortage, etc., the bumper shrimp will give birth to resting eggs. Resting eggs has a thick egg shell, which can tolerate harsh environmental conditions. Generally, it will not hatch directly in water, and it needs to return to the water after a certain diapause period before it can hatch. This is the way for the harvest shrimp population to resist the harsh environment, protect its offspring in the form of resting eggs, and hatch only after the environment returns to normal. The shrimp eggs we bought in the form of commodities are resting eggs. Resting eggs can survive for about 5 years when it is stored in low temperature and dry conditions. When it re-enters the seawater at room temperature or absorbs water in a humid environment, it will stimulate the embryos in the shell to start metabolic activities, enter the incubation process, and finally break out of the shell and become nauplii.