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Prawn low dissolved oxygen resistance family selection method

A low-dissolved oxygen, prawn technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of low survival rate of aquaculture, slow growth of prawns, etc., and achieve clear parental genetic background, convenient management, and reduce maintenance costs Effect

Active Publication Date: 2015-06-10
广东海威农业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a family selection method for prawns resistant to low dissolved oxygen species, so as to solve the problems of slow growth of prawns caused by water hypoxia and low survival rate of cultured in the process of high-density cultivation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for breeding prawns resistant to low dissolved oxygen families, comprising the steps of:

[0023] (1) Establishment of the basic population: collect Zhongxing No. 1, ZHONGXING No. Zhongke No. 1 and Guihai No. 1 broodstock were used as groups, and 15 mating combinations were established through group mating as the basic group for breeding;

[0024] (2) Construct the F1 generation family: From the above 15 mating combinations, select the individual with a 2% selection intensity, select a large individual, 45g of female shrimp, 35g of male shrimp, 300 female shrimp, 100 male shrimp, and male and female shrimp gonads With normal development, complete appendages, no disease, strong appetite, and sensitive to external stimuli, they will be kept as broodstock. Through artificial insemination, 60 full-sib families and male half-sib families will be established according to the ratio of male to female at 2:1. 30, for the F1 generation family;

[0025] (3) Cultivation ...

Embodiment 2

[0031] A method for breeding prawns resistant to low dissolved oxygen families, comprising the steps of:

[0032] (1) Establishment of the basic population: collect Zhongxing No. 1, ZHONGXING No. Zhongke No. 1 and Guihai No. 1 broodstock were used as groups, and AFLP technology was used to analyze the genetic diversity of broodstock from different sources, and 15 mating combinations were established through group mating as the basic population for breeding;

[0033] (2) Construct the F1 generation family: From the above 15 mating combinations, select the individual with a 2% selection intensity, select the individual with 65g female shrimp and 55g male shrimp, 400 female shrimp, 200 male shrimp, and the gonads of male and female shrimp Normal development, complete appendages, no disease, strong appetite, and sensitive to external stimuli, as broodstock shrimp, through artificial insemination, according to the ratio of male to female at 2:1, to establish 100 full-sib families a...

Embodiment 3

[0039] Example 3 A method for breeding prawns resistant to low dissolved oxygen families, including the following steps: (1) Establishment of basic populations: Collected from SIS of Florida Shrimp Improvement Company in the United States, Konna Bay of Kona Bay Marine Resources Company, Hawaii Ocean Research Institute OI, Thailand Zhengda Broodstock Company ZD and domestically selected parent shrimps Zhongxing No. 1, Zhongke No. 1, and Guihai No. 1 are used as a group, and 15 mating combinations are established through group mating as the basic group of breeding; (2) Construct the F1 generation family: From the above 15 mating combinations, select the individual with a 2% selection intensity, with 55g female shrimp and 45g male shrimp, 400 female shrimp and 150 male shrimp, and the gonad development of male and female shrimp is normal. With complete appendages, no disease, strong appetite, and sensitive to external stimuli, they were kept as broodstock. Through artificial insem...

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PUM

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Abstract

The invention relates to a prawn low dissolved oxygen resistance family selection method, and belongs to the technical field of prawn stress-resistance trait selection. The method comprises the steps of base population establishing; F1 generation family establishing; same pool culturing; low dissolved oxygen resistance testing; F2 generation family establishing; continuous generation selecting, wherein different sources of parent prawns are selected to establish a full / half-slib family through directional mating, common environmental breeding is performed, 94 h low dissolved oxygen stress is performed, parent selecting and remaining are performed according to the low dissolved oxygen resistance test result and the growth measure result, after four generations of continuous selection, the family of distant genetic relationship is selected from the families with excellent growth performance and strong low dissolved oxygen resistance performance, the male and female prawns which are big in individual, strong in vigor and normal in gonad development are selected to serve as parent to breed as good varieties. According to the method, the problem occurring in prawn high-density culturing that the prawns are dead caused by the fact that the prawn growth is influenced by low dissolved oxygen is solved, and the development of the prawn high-density culture industry is greatly promoted.

Description

technical field [0001] The invention relates to a method for breeding prawns, in particular to a method for breeding prawns resistant to low dissolved oxygen families, and belongs to the technical field of breeding prawns for stress resistance traits. Background technique [0002] Prawns belong to Arthropoda, branchial subphylum, crustacea, soft armor subclass, decapod order, swimming suborder, prawn family, and genus prawns. Shrimp can be divided into sedentary type (such as Japanese prawn, broad groove prawn, European prawn, etc.) and migratory type (such as Chinese prawn, Moji prawn, long-haired prawn). The former type lives in shallow coastal waters and often dives into the sand bottom during the day. Do not move in a large range; the latter type lives in the turbid sea along the estuary, and often moves and migrates in a large range. Prawns mainly feed on benthic invertebrates, such as polychaetes, small crustaceans and bivalve molluscs, and sometimes catch zooplankton...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCA01K61/59Y02A40/81
Inventor 刘定刘建勇刘荡刘东晖郑大陈海龙许榕榕
Owner 广东海威农业集团有限公司
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