Seed making method for low-copper Fujian oyster breeding system

A technology for oyster and copper content, which is applied in the field of aquatic biological genetics and breeding to achieve the effect of reducing copper content, high quality and low copper, and remarkable effect

Inactive Publication Date: 2018-11-20
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a healthy, safe and high-quality seed production method of a low-copper Fujian

Method used

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Examples

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Embodiment Construction

[0021] The following examples will further illustrate the present invention.

[0022] Embodiments of the present invention include the following steps:

[0023] 1. Select 2,000 individuals with a shell length of more than 10cm, a shell height of more than 3cm, and a similar total weight from the 1-year-old Fujian oyster culture population in Zhao'an Bay as the basic group, and bring them back to the temporary breeding pond of the nursery for 7 days to ensure the vigor of the oysters , the temporary breeding conditions are water temperature 25-27°C, salinity 25, feeding twice a day, each feeding 30,000 cells / ml of Chaetoceros, 30,000 cells / ml of Chlorella, and 50,000 cells / ml of Phytophthora ml, slowly replace half of the seawater after the water body bait is filtered and fed every day;

[0024] 2. Select 500 male and female oysters with full gonads, take 0.1-0.3g of the mantle to measure the copper content, place the remaining soft parts in the lower shell (concave shell) in ...

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Abstract

The invention discloses a seed making method for a low-copper Fujian oyster breeding system and relates to an aquatic organism genetic breeding technique. The method comprises the following steps: selecting individuals of tidy shell shapes from a same sexual maturity Fujian oyster colony as a basic breeding group, and carrying out temporary rearing; testing the content of copper of a part of pallium, and carrying out in-situ preservation on rest soft parts under a low-temperature high-moisture condition; testing the content of copper in the pallium by using an inductively coupled plasma mass spectrometry method; carrying out anabiosis on parental oyster, carrying out artificial fertilization, and after fertilization succeeds and polar bodies grow out, washing off excessive sperms; hatchinggerm cells of the group breeding system in a culture pond, culturing floating larvae, and continuously culturing juvenile mollusk after attachment and metamorphose of the floating larvae; transferring the cultured juvenile mollusk into a same culture sea area, culturing so as to obtain a first filial generation low-copper breeding system, wherein the first filial generation develops till sexual maturity and meets commercial specifications 9-12 months later; selecting individuals which are tidy in shell shape and similar in size from the first filial generation in sexual maturity, and repeating the operation for 1-2 times till character immobilization, thereby obtaining a novel Fujian oyster strain with low copper enrichment.

Description

technical field [0001] The invention relates to aquatic organism genetic breeding technology, in particular to a seed production method of a low-copper Fujian oyster breeding line. Background technique [0002] Oysters are delicious and nutritious, and are one of the traditional shellfish farming varieties. Fujian oyster (Crassostrea angulata), also known as Portuguese oyster, is regarded as an excellent oyster breeding species because of its fast growth and strong vitality. In 2016, Fujian's oyster production was as high as 1.7466 million tons, accounting for 36.13% of the total national oyster production (China Fishery Yearbook 2017). It can be seen that the oyster farming industry in Fujian has become an important marine and fishery industry in my country. [0003] With the development of aquaculture, the nutritional quality and food safety of Fujian oysters have received more and more attention. Oysters have a strong ability to enrich copper, and can efficiently enric...

Claims

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Application Information

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IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 史博柯才焕游伟伟王恬
Owner XIAMEN UNIV
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