Shellfish burly artificial seedlings
1. The choice of pro-shellfish: Normal-temperature seedlings are carried out from July to August. When the water temperature is 18-24°C, the shell with a length of 7-8cm and a complete shape is selected as the pro-shellfish.
2. The stocking of pro-shellfish: It is stocked in floating cages, cages or directly on the bottom of the pool. The stocking density is 50-60 per square meter. Management should increase the exchange of water and increase feeding.
3. Egg-picking and hatching: using the natural egg-emission method. In order to prevent excessive spermatozoa, it was found out immediately when the males were discharged. After the eggs are fertilized, wash eggs 2-3 times.
During the incubation, continuous micro-inflation. When necessary, apply 1 gram of chloramphenicol or erythromycin per cubic meter of water to inhibit the proliferation of microorganisms and ensure the healthy development of the embryo.
4. Selection of the young: The fertilized egg develops to D-shaped larvae at a temperature of 24-25°C for 21-24 hours. As soon as you reach the D-shaped larvae, you must establish a good selection.
5. Larval breeding: The method is basically the same as that of other bivalve larvae.
6. With Miao: When the shell larvae appear 50% of the eyes, the foot began to expand, the shell edge becomes thicker, similar to the spider web-like filiform adhesive material in the water, should immediately put into the treated brown curtain seedlings. After the curtain is cast, it is necessary to increase the amount of water to be changed and the amount of bait to be fed.
7. The transition of the seedlings to the sea: The wind bag is used for the intermediate transition of the workers Xuan. In summer, the water temperature is higher, the light is stronger, algae grow faster, and the net bags are easily contaminated, affecting the water exchange rate of the net bags. Therefore, when the seedlings are kept, the density of the net bags should not be too large. In the process of keeping seedlings, prevent the damage of starfish.
2. The stocking of pro-shellfish: It is stocked in floating cages, cages or directly on the bottom of the pool. The stocking density is 50-60 per square meter. Management should increase the exchange of water and increase feeding.
3. Egg-picking and hatching: using the natural egg-emission method. In order to prevent excessive spermatozoa, it was found out immediately when the males were discharged. After the eggs are fertilized, wash eggs 2-3 times.
During the incubation, continuous micro-inflation. When necessary, apply 1 gram of chloramphenicol or erythromycin per cubic meter of water to inhibit the proliferation of microorganisms and ensure the healthy development of the embryo.
4. Selection of the young: The fertilized egg develops to D-shaped larvae at a temperature of 24-25°C for 21-24 hours. As soon as you reach the D-shaped larvae, you must establish a good selection.
5. Larval breeding: The method is basically the same as that of other bivalve larvae.
6. With Miao: When the shell larvae appear 50% of the eyes, the foot began to expand, the shell edge becomes thicker, similar to the spider web-like filiform adhesive material in the water, should immediately put into the treated brown curtain seedlings. After the curtain is cast, it is necessary to increase the amount of water to be changed and the amount of bait to be fed.
7. The transition of the seedlings to the sea: The wind bag is used for the intermediate transition of the workers Xuan. In summer, the water temperature is higher, the light is stronger, algae grow faster, and the net bags are easily contaminated, affecting the water exchange rate of the net bags. Therefore, when the seedlings are kept, the density of the net bags should not be too large. In the process of keeping seedlings, prevent the damage of starfish.
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