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Breeding method for sepia esculenta of quick-growing strain

A golden squid and fast technology, which is applied in the field of breeding of rapid growth lines of golden squid, can solve the problems such as the degradation of economic traits of breeding groups, the miniaturization of sexually mature individuals, and the limitation of popularization and breeding of golden squid.

Inactive Publication Date: 2013-07-31
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

[0003] At present, the parents of golden squid mainly come from the wild populations in Qingdao and Rizhao offshore. They have been artificially propagated and cultivated for many generations without breeding. Due to the lack of systematic and continuous scientific breeding, the germplasm of golden squid has been seriously degraded in recent years. , mainly manifested in the gradual decline in seed quality, slow growth rate, smaller breeding individuals than wild individuals, and miniaturization of sexually mature individuals, etc., resulting in the degradation of the economic traits of the breeding population and the decline in industrial efficiency, which limits to a certain extent Therefore, it is urgent to select and breed golden squid with excellent traits through certain breeding methods to obtain fast-growing new strains, so as to promote the healthy development of the golden squid breeding industry.
But do not see the report of golden squid fast-growing strain breeding method so far

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  • Breeding method for sepia esculenta of quick-growing strain

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Embodiment 1

[0027] In June 2009, we started the selection and breeding of fast-growing strains of golden squid in Qingdao Jinshatan Aquatic Development Co., Ltd., including basic population construction and mating plan formulation, brood domestication and intensive cultivation, brood mating and spawning, seedling cultivation, Seed cultivation, seed screening, parental selection, and formulation of next-generation breeding plans, the specific steps are as follows:

[0028] (1) Basic population construction and mating plan formulation

[0029] In May 2008, four geographical populations of golden squid were collected in Qingdao, Rizhao, Shandong, Zhoushan, Zhejiang, and Xiamen, Fujian. Each population had more than 50 individuals. For each geographic population, 10 parents with the largest individuals and excellent traits were selected, and the ratio of male to female was 1:1. The breeding plan was formulated according to the inter-population hybridization and intra-population self-crossing ...

Embodiment 2

[0057] In July 2012, at the only provincial-level golden squid breeding farm in the country where we acted as a technical consultant—Qingdao Golden Beach Aquatic Development Co., Ltd., the golden squid seedlings that had been bred for three consecutive generations and the seedlings that had not been bred for growth were tested. A growth contrast test was carried out, and 1,000 golden cuttlefish larvae with a carcass length of about 2 cm were respectively taken and cultured under the same environmental conditions. After 180 days of cultivation, after being cultivated at the end of January 2013, the body weight and carcass length of each individual were measured, and the calculated Survival rate, the final analysis of the data shows that the individual weight of the selected seedlings is 761g, and the survival rate is 92%, and the individual weight of the unselected seedlings is 632g, and the survival rate is 79%. The results showed that the selected individuals had obvious growt...

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Abstract

The invention discloses a breeding method for a sepia esculenta of quick-growing strain, which belongs to the technical field of breeding aquatic fingerlings, and comprises the following steps: basic populations building, mating plan making, brood stock domesticating and strengthening cultivation, brood stock mating, eggs laying, fingerlings cultivating, fingerlings developing, fingerlings selecting, brood stock selecting and remaining, and next-generation breeding plan making. According to the method, by means of hybridizing between populations, the method takes full advantage of the hybridization to allow excellent characters of the sepia esculenta to be expressed, and meanwhile utilizes autocopuation in a population without controlling inbreeding coefficient to allow excellent genes with same hereditary basis to be subjected to homozygosis; through measurements and analyses for growing indexes in the sepia esculenta breeding process, and a male and a female with equivalent brood stock growth value can mate to conduct lay eggs for the next generation; and the sepia esculenta quick-growing character is bred in a plurality of generations to enable excellent characters of different populations to gather, so as to breed the sepia esculenta of quick-growing strain.

Description

technical field [0001] The invention belongs to the technical field of aquatic seed breeding, and in particular relates to a method for breeding fast-growing strains of golden squid. Background technique [0002] Golden squid has the characteristics of short life cycle (1 year), fast growth, large individual, rich nutrition, high availability, etc. It is a high-quality species with high economic value and strong demand in the consumer market. In the case of degraded germplasm of flounder and flounder industrialized breeding, frequent occurrence of diseases, and sharp drop in breeding benefits, golden squid is a better substitute species. The golden squid research team of the Yellow Sea Fisheries Research Institute has been conducting research on golden squid seed breeding and multiplication breeding technology since 2005. After many years of research, it took the lead in breaking through the key technology of artificial large-scale breeding and multiplication breeding of gol...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 刘长琳陈四清赵法箴刘春胜薛祝家孙建明
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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