Screening method for anti-ammonia nitrogen Penaeus monodon species

Abstract

The invention discloses a screening method for anti-ammonia nitrogen Penaeus monodon species. The screening method comprises the following steps: (1) putting a plurality of Penaeus monodon into a culture pond according to a certain ratio of male to female to perform breeding, performing fluctuating adjustment on the concentration of ammonia nitrogen in the water in the culture pond according to apredetermined adjustment period in the breeding process, and allowing the Penaeus monodon to grow in the water with the ammonia nitrogen concentration fluctuating with the predetermined period; (2) taking the Penaeus monodon to be weighed according to a predetermined measurement period in the breeding process, selecting and re-putting the Penaeus monodon individuals having the maximum weight intothe breeding pond after weighing in each measurement period; and weighing the female Penaeus monodon and the male Penaeus monodon separately; and (3) performing mating and breeding, instructing the Penaeus monodon to perform mating and breeding if the Penaeus monodon mature and mate, transferring fertilized Penaeus monodon eggs to another breeding pond, and performing breeding and screening on thenext generation of Penaeus monodon according to the steps (1) and (2).

Description

technical field [0001] The invention relates to a technique for screening and breeding of Penaeus monodon, in particular to a screening method for strains of Penaeus monodon resistant to ammonia nitrogen. Background technique [0002] During the breeding period, the water temperature is between 22-33°C, the salinity is 20-25, and the oxygen is increased by the aerator during the breeding period, DO5.0mg / L. According to the body length and body weight data of female and male shrimp, the corresponding relationship between body length and body weight was fitted respectively. The spawning date of broodstock shrimp on March 10 is set as the zero-day age of cultured prawns. The body length of 27-day-old larvae is about 13mm, and the weight is about 0.03g. Samples are taken at different growth stages to calculate the number of samples for each batch of shrimp. average body length and weight. Since the sampling time of each batch is not at equal intervals, it is difficult to direc...

AI Technical Summary

Problems solved by technology

However, the death of prawns is easy to cause a serious waste of resources, and the dead prawns have basically no economic benefits; in addition, dead prawns are easy to pollute the water body, so it is necessary to clean the dead prawns out of the aquaculture water body at the first time, and all prawns in the entire breeding pond will die due to the pollution of dead prawns. The phenomenon also occurs from time to time, it is necessary to minimize the occurrence of dead shrimp