Method for inducing the buffer flouder to naturally spawn
A technology for spotted flounder and barred star, which is applied in the field of inducing natural spawning of Spotted star flounder to obtain high-quality fertilized eggs, can solve the problems of decreased fertilization rate, difficulty in obtaining fertilized eggs in batches, unstable ovulation cycle, and the like. good quality effect
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[0017] On November 7, 2006, the artificial breeding of the spotted flounder broodstock was started at the Xuejiadao Nursery Farm in Qingdao, and the breeding water was natural seawater. In the early stage of broodstock cultivation, it is natural seawater, the water temperature is 5.8-15°C, the water temperature is lowered to 5.8°C and kept for 7 days, and then heated from 0.3-0.5°C to 7.5°C every day. The broodstock was bred until March 6, 2007, when the gonads of the broodstock matured. The temperature began to rise gradually at 8:00 on March 7th, and the water temperature rose to 9°C by 13:00, the water temperature at 9°C was maintained until 6:00 the next day, and the water temperature gradually dropped from 9°C to 7.5°C by 11:00. At 7:00 on March 9, the broodstock began to lay eggs naturally, and a large number of high-quality fertilized eggs were obtained.
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