Flounder triploid batch producing method
A production method and triploid technology, applied in fish farming, climate change adaptation, application, etc., can solve problems such as difficulty in meeting industrialized production, low triploid induction rate, and inability to apply, and achieve strong practicability. , the effect of neat ploidy and simple operation
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Embodiment 1
[0062] Embodiment 1, batch production of triploid flounder:
[0063] Including three aspects: 1), batch production of triploid brown flounder fry; 2), identification of triploid brown flounder fry; 3), evaluation of growth performance and gonad development status of triploid brown flounder .
[0064] One), batch production of triploid brown flounder fry:
[0065] Its technical content includes: 1) sperm and egg collection and artificial insemination and 2) triploid induction steps.
[0066] 1) Sperm and egg collection and artificial insemination:
[0067] Select the female and male flounder fish that have reached sexual maturity after natural development or artificial induction, and collect eggs and sperm by artificially squeezing the abdomen, and place the collected flounder eggs in a dry beaker at a room temperature of 15-19°C Medium; add the collected fresh semen of flounder into unfertilized eggs, the minimum fertilization volume ratio of semen and eggs is 500-1000μL: 1...
Embodiment 2
[0098] Embodiment 2, mass production of triploid tongue sole
[0099] Including two aspects: 1), batch production of triploid fry; 2), identification of triploid fry; 3), evaluation of triploid growth and gonad development
[0100] One), batch production of triploid fry:
[0101] Its technical content includes: 1) sperm and egg collection and artificial insemination and 2) triploid induction steps.
[0102] 1) Sperm and egg collection and artificial insemination:
[0103] The half-smooth tongue sole broodstock was artificially bred by Shandong Haiyang Huanghai Aquatic Products Co., Ltd. and Laizhou Mingbo Aquatic Products Co., Ltd. The polyploid induction experiment was also carried out in the above two companies. Select female and male adult semi-smooth tongue sole with no damage on the body surface as brood fish. The weight of female fish should be 2-4kg / tail; the weight of male fish should be 200-450g / tail. Breeding, feeding fresh live bait such as shellfish, wild shrimp...
Embodiment 3 3
[0124] Embodiment 3, batch induction of triploid star flounder fry
[0125] Including two aspects: 1), mass induction of triploid flounder fry; 2), identification of triploid flounder fry;
[0126] One), batch induction of triploid fry of spotted flounder;
[0127] Using a screening method similar to the batch induction parameters of triploid fry of brown flounder and tongue sole, the batch induction of triploid fry of spotted flounder was carried out, and the technical conditions suitable for triploid induction of spotted flounder were found out. Obtain triploid fry of spotted flounder. That is, select the mature female and male flounder fish first, collect eggs and sperm by artificially squeezing the abdomen, put the eggs into a dry beaker, and store them at room temperature at 8-9°C; firstly, the Polystat CC series can be used to The cooled constant temperature water bath box was used for different temperature experiments, and the water temperature suitable for cold shock...
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