In China's culture of scallops are mainly ctenophore scallops, bay scallops and scallops 3 kinds, ctenophore scallop growth culture of the best water temperature of 15-20 ℃, the salt category for 23 ‰ -34 ‰; bay scallop growth culture of the best water temperature of 18-28 ℃, the salt category of 21 ‰ -35 ‰; shrimp scallop culture of the best water temperature of 5-7 ℃, infantile culture link at 15 ℃ The best water temperature for scallop culture is 5-7℃, and the larvae culture session is at 15℃, which is categorized as high salt species, and the suitable salt category is 24‰-40‰.
In China's coastal areas are the main origin of cultured shellfish. There are 60 kinds of shellfish all over the world, and our country accounts for the general about, at this stage of the culture of the largest number of shellfish are ctenophore scallop, bay scallop and shrimp scallop. Young scallops are more capable of moving and working than big scallops, pecten scallops are hardy and can survive in water temperature of -1.5℃, but the most suitable water temperature for growth is 15~25℃, and the scallop will die in -2℃ and above 35℃. The most suitable for the growth of seawater ratio of 1.017 ~ 1.026.
1, ctenophore scallop
Cold hardy working ability, in -1.5 ℃ water temperature can also be all normal survival, the most suitable for the growth of ctenophore scallop water temperature is 15-20 ℃ or so, when the water temperature exceeds 25 ℃ above the rate of growth will be restricted, and in the 4 ℃ below the temperature of the water, the scallop termination of The growth of the scallop will be limited when the water temperature exceeds 25℃. Ctenophore scallop's salinity range is 23-34, it consumes oxygen at a high rate, and thus has a very poor working ability to resist dry dew.
2, bay scallop
Bay scallop generally grows in the deepest part of the sea level 3-10 meters, in the natural environment of the situation of discomfort, can be since the cut foot silk to carry out rapid movement. Bay scallop's high temperature range in -1-31 ℃ or so, 5 ℃ below the termination of the growth of scallops, 18-28 ℃ temperature is a faster growth rate, 21 ‰ -35 ‰ is the optimal salt category of scallops.
3, scallop
Temperature below 5 ℃ is the best time for scallop transportation fee, burlap bags wet with seawater, scallops into the burlap bags tied, seawater transportation 15 bells, scallop survival rate can do 100%. Scallop culture relative density of 30-40 / cubic appropriate, the water temperature should be manipulated at 5-7 ℃, the bait is mainly small diatoms, feeding amount of 300,000-400,000 / ml, feeding every 6 bells, daily tank water change about 4 times. Juvenile culture session water temperature should be manipulated at about 15 ℃, to do juvenile shellfish conditions when gradually reduce the temperature of the culture, on the transfer to the water to make a pad. Ezo scallop is a high salt species, salt category for 24 ‰ -40 ‰.