3 results about "Marsupenaeus" patented technology

The invention relates to the technical field of aquaculture and biology, in particular to an SIFamide neuropeptide gene and application of the SIFamide neuropeptide gene in promoting growth of litopenaeus vannamei. The litopenaeus vannamei SIFamide gene is shown as a nucleotide sequence of SEQ ID NO: 1. The SIFamide neuropeptide gene is applied to the growth and intestinal peristalsis of the litopenaeus vannamei. The nucleotide sequence of the interference fragment for inhibiting the SIFamide neuropeptide gene is as shown in SEQ ID NO: 4. After the nucleotide sequence (double-stranded RNA) of the interference fragment is applied to the litopenaeus vannamei in an intramuscular injection manner, the weight increase of the litopenaeus vannamei is obviously accelerated and the intestinal peristalsis frequency is obviously improved under the condition that the expression of the SIFamide gene is inhibited. According to the method, damage to the litopenaeus vannamei is small, normal ingestion, molting, inhabiting and other behaviors of the litopenaeus vannamei are not affected, and the action effect is stable.

The invention discloses a penaeus monodon DNA (deoxyribonucleic acid) fingerprint spectrum which comprises at least 209 specific SNP (single nucleotide polymorphism) sites and realizes efficient and accurate distinguishing of different culture populations, so that technical guarantee is provided for identification and traceability work of penaeus monodon germplasm, and meanwhile, an accurate molecular technology platform for germplasm resource development, utilization and protection is built. The invention further discloses a construction method of the DNA fingerprint spectrum of the penaeus monodon and application of the DNA fingerprint spectrum of the penaeus monodon in identification of germplasm resources of the penaeus monodon and assistant breeding.

The present application relates to a method and system for breeding of Marsupenaeus japonicus based on selection of uniformity of growth traits, belonging to the technical field of genetic breeding of Marsupenaeus japonicus. A plurality of breeding base parents of Marsupenaeus japonicus are obtained, a plurality of the breeding base parents are identified and evaluated by genotyping technology, and a plurality of the genomic combination information is introduced into a blank pairing table to obtain a uniformity pairing table of growth traits of Marsupenaeus japonicus. The coefficient of variation of the simulated growth record information is calculated based on the pairing table, the abnormality determination result of the growth traits is generated, the correlation degree of the operating mechanism and the environmental data is calculated based on the abnormality determination result of the growth traits to generate a correlation degree ranking table, the regulation scheme of the breeding equipment is formulated according to the correlation degree ranking table, the influence degree of the seedlings after regulation is calculated by establishing a linear regression model, and the final breeding scheme is obtained. The present application can solve the problem of genetic gene mutation caused by environmental differences in the breeding process of Marsupenaeus japonicus and improve the uniformity of growth traits.