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What is the breeding mode of ivory mussels?
The breeding season of mussels is generally from April to July, and the peak period is from May to June. Individual spawning/kloc-0 10000-20000000, spawning water temperature 14- 17℃. The egg diameter is 82 microns. After 4-5 days, the fertilized egg develops into a D-shaped larva (120- 130 microns). 10- 12 days to develop into a shell-top larva (160- 180 micron); After about 30 days, the larvae sink, accompanied by metamorphosis, and the shell is 350-400 microns long.

Mytilus feeds on unicellular algae in seawater, and can also filter sediments and organic debris. The main enemies of mussels are crabs, starfish, snails and flounder. Adult mussels live on the bottom of the sea and have strong protection ability.

According to the survey, there are many sea areas suitable for its growth in northern China. From 1999, we introduced mussel species from the United States and conducted artificial seedling production experiments. By 2003, more than 420 species of mussels were introduced from China. Generally, after 4-5 days of transportation, the survival rate reaches 74%. Using the original shellfish culture equipment, it can be introduced in March-April to promote maturity, and it can lay eggs in about 20 days. If heating stimulation is used, the hatching rate can reach 80% -90%.

Sand is the best attachment base for mussels. After attachment, the larvae were cultured by flowing water method, and the daily feeding amount gradually increased to10.20 million cells /ml. After 8- 10 days, the larvae developed into single-tube larvae (shell length 0.6-1 mm). In 22-23 days, it developed into a double-tube juvenile shellfish (shell length1.4-1.6mm); After 30 days, the shell length is 2mm( 1500-800 capsules); The 40-day shell is 3.5 mm long (150- 180 capsules); The shell is 8 mm (2 0-26 grains) in 60 days, and seedlings can be sown in the sea at this time.