A breeding method for marsupenaeus japonicus breeding population based on high ammonia nitrogen resistance and growth traits

Abstract

The invention provides a breeding method for marsupenaeus japonicus breeding population based on high ammonia nitrogen resistance and growth traits. The method comprises the steps of: (1) parent shrimp import; (2) establishment of a family; (3) preliminary experiment of high ammonia nitrogen resistance; (4) high ammonia nitrogen resistance experiment for the breeding family; (5) high ammonia nitrogen resistance data recording; (6) establishment of a genetic estimation model; (7) family breeding larva reservation; (8) establishment of a second-generation family. The method can breed a new marsupenaeus japonicus variety with high ammonia nitrogen resistance and growth superiority; the stress resistance of marsupenaeus japonicus to the concentration of ammonia nitrogen is improved and the survival rate and the growth speed of marsupenaeus japonicus are increased.

Description

technical field [0001] The invention relates to the field of aquatic product breeding, in particular to a breeding method for breeding populations of Penaeus japonicus for resistance to high ammonia nitrogen and growth characteristics. Background technique [0002] Ammonia nitrogen is a common harmful substance in aquaculture. Ammonia nitrogen is one of the main components of the excrement of prawns. The impact has the following aspects: [0003] 1. It will penetrate into the blood of prawns, leading to an increase in the concentration of ammonia nitrogen in the hemolymph and a decrease in the concentration of oxyhemocyanin, which will weaken the respiratory function of prawns and the oxygen-carrying capacity of blood, and cause hypoxia in prawn tissues. A large number of deaths caused breeding failure, which is not conducive to the promotion of Penaeus japonicus culture, [0004] 2. The concentration of ammonia nitrogen will affect the abnormal physiological functions suc...

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Problems solved by technology

[0003] 1. It will penetrate into the blood of prawns, leading to an increase in the concentration of ammonia nitrogen in the hemolymph and a decrease in the concentration of oxyhemocyanin, which will weaken the respiratory function of prawns and the oxygen-carrying capacity of blood, and cause hypoxia in prawn tissues. A large number of deaths caused breeding failure, which is not conducive to the promotion of Penaeus japonicus culture,

[0004] 2. The concentration of ammonia nitrogen will affect the abnormal physiological functions such as growth and molting of prawns, which will increase the oxygen consumption of prawns, disturb the physiological metabolism of the body, and reduce the disease resistance

And prior art still does not have the record of the selective breeding method of Penaeus japonicus breeding population resistance to high ammonia nitrogen and growth traits

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