Large-scale breeding method and equipment for hybrid young scallops

Abstract

The invention discloses a large-scale breeding method and equipment for hybrid young scallops. Through temperature regulation and other technical means, gonads of bay scallops and gonads of patinopecten yessoensis both of which become mature at the same time lay eggs and produce sperms respectively; then, a stepwise cooling mode is adopted for lowering the temperature of egg laying and spermiationwater for the bay scallops to be suitable for patinopecten yessoensis to lay the eggs, and then the egg laying and spermiation water for the bay scallops is mixed with the egg laying water for patinopecten yessoensis. The vitality of the sperms is maintained, the fertilization rate, hatching rate, survival rate and metamorphosis rate of planktonic larvae in a hybridization process are increased,and the production efficiency of the hybrid young scallops is improved. The hybrid young scallops also have the advantages of being high in growth speed, wide in temperature-resistant range, high in adult scallop yield and the like.

Description

Technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a large-scale breeding method and equipment for hybrid scallop seed of Yezo scallop (♀) and bay scallop (♂). Background technique [0002] At present, the main species of scallop cultured are bay scallops, scallops, scallops, and scallops. Among them, bay scallops and scallops have the largest output, accounting for more than 70% of my country's total scallop production. The bay scallop grows fast (it can be grown in the same year) and has strong high temperature resistance, but the individual is small, and the rate of scallops (adductor muscle) is low; the scallops are large, with a high rate of dicing (adductor muscle) and the market price is high However, it is a low-temperature variety. The maximum temperature in summer cannot exceed 23°C for a long time, otherwise a large number of deaths will occur. Therefore, the breeding is limited by region and the growth rate is slow. ...

AI Technical Summary

Problems solved by technology

Bay scallops grow fast (can be cultivated in the same year) and have strong high temperature resistance, but they are small and have a low rate of scallops (adductor muscle); Ezo scallops are large, have a high rate of scallops (additive muscle) and high market prices , but it is a low-temperature variety. The highest temperature in summer cannot exceed 23°C for a long time, otherwise it will die in large numbers. Therefore, the breeding is limited by the region, and the growth rate is slow at the same time. It takes 2 to 3 years to grow.

[0003] So far, there is no report on the large-scale breeding method and equipment of hybrid scallop seedlings of Ezo scallop (♀) and bay scallop (♂)

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