A kind of method of quick spawning of Scallop mussels
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It is a fast and fast technology applied in the field of aquatic shellfish farming, which can solve the problems of difficulty in mass spawning, low ambient water temperature, difficulty in spawning, etc., and achieve high egg quality, increased spawning rate, and increased spawning rate. Effect
Active Publication Date: 2019-04-30
OCEAN UNIV OF CHINA
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Problems solved by technology
[0004] C. chinensis is a large-scale mollusk that lives in the sea area above 15 meters in deep water, and the ambient water temperature is low and stable. The inventors conducted targeted research on the induced spawning of C. chinensis broodstock according to its ecological habits, in order to improve the egg production and laying capacity of broodstock. Egg rate, in order to overcome the technical difficulties of laying eggs in the existing artificial breeding of P.
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Embodiment 1
[0020] A kind of method for fast laying eggs of broodstock clam, comprising the following steps:
[0021] (1) Firstly, select the 12-18cm softshell shellfish, feed them manually indoors, and increase the temperature by 0.3°C per day to 22°C by changing the water, so that the gonads of the softshell shellfish are mature and ready for production ;
[0022] (2) Wash the above-mentioned gonad-mature mussels and place them in a refrigerator at a temperature of 5-6°C to dry for 1 hour;
[0023] (3) After the dry dew is completed, add filtered seawater at 5-6°C to the container where the clams are placed, continuously inflate a small amount of air, and cultivate at a constant temperature of 5-6°C for 12 hours, and do not put bait during this process;
[0024] (4) After the step (3) is completed, move the clams into the spawning pond for ovulation and semen: During this period, feed the golden algae bait once, and after 1 hour of adaptation, some male shellfish start to ejaculate, 1....
Embodiment 2
[0026] A kind of method for fast laying eggs of broodstock clam, comprising the following steps:
[0027] (1) Firstly select the 12-18cm softshell shellfish, feed them manually indoors, and increase the temperature by 0.5°C per day to 22°C by changing the water, so that the gonads of the softshell shellfish are mature and ready for production ;
[0028] (2) Wash the above-mentioned gonad-mature mussels and put them in a refrigerator with a temperature of 5-6°C to dry for 0.5 hours;
[0029] (3) After the dry dew is completed, add filtered seawater at 5-6°C to the container where the clams are placed, continuously inflate a small amount of air, and cultivate at a constant temperature of 5-6°C for 15 hours, and do not add bait during this process;
[0030] (4) After the step (3) is completed, move the clams into the spawning pond for ovulation and semen: During this period, feed the golden algae bait once, and after 1 hour of adaptation, some male shellfish start to ejaculate, ...
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Abstract
The invention discloses a quick spawning method of Atrina pectinata seed shells. The quick spawning method includes following steps: selecting Atrina pectinata seed shells, performing indoor artificial feeding, and rising temperature step by step to promote maturity breeding to enable sexual glands of the Atrina pectinata seed shells to be mature for waiting for delivery; performing low-temperature drying and exposure on the Atrina pectinata seed shells with mature sexual glands; adding filtered seawater into a container where the Atrina pectinata seed shells are placed, continuously inflating, and performing low-temperature water breeding; transferring the Atrina pectinata seed shells into a spawning pool for ovulation and spermiation. Low-temperature drying and exposure and low-temperature water breeding of a period of time are performed on the seed shells waiting for delivery, and then the seed shells are placed in the spawning pool high in temperature. Due to double stimulation of cooling and heating, spawning rate reaches higher than 60%. By using the quick spawning method, the problem that indoor artificial breeding of Atrina pectinata is difficult in parent shell spawning and low in seed shell spawning rate is solved, needs on a large amount of high-quality eggs for artificial breeding of Atrina pectinata are met, and a foundation is provided for artificial large-scale breeding of Atrina pectinata.
Description
technical field [0001] The invention relates to a method for laying eggs of shellfish, in particular to a method for quickly laying eggs of C. chinensis, belonging to the field of aquatic shellfish cultivation. Background technique [0002] As a large edible mollusk with high economic value, it is distributed in the north and south coasts of my country. The posterior adductor muscle of Cujiang yam is extremely thick, and can be dried into "Jiang yaozhu". The meat is tender, fat and white, and rich in nutrition. It is an extremely rare seafood treasure. In recent years, resources have been greatly reduced due to overfishing, which is far from meeting the needs of domestic and foreign markets. Therefore, it is urgent to carry out artificial seedling cultivation and resource restoration work for A. chinensis. At present, the key technologies for productive seedling raising of P. chinensis at home and abroad have not been completely overcome. One of the main reasons for the fai...
Claims
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Application Information
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