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A kind of backcross breeding method of Litopenaeus vannamei

A technology of Litopenaeus vannamei and Penaeus vannamei, which is applied in the field of backcross breeding of Litopenaeus vannamei, can solve the problems such as the decline of self-propagating population traits, achieve the effects of reducing the incidence rate, alleviating the heavy dependence on imports, and accelerating the progress of breeding

Active Publication Date: 2021-06-29
渤海水产育种(海南)有限公司
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  • Application Information

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Problems solved by technology

At present, there are many introduced populations of Litopenaeus vannamei from different sources in my country, and these different populations all show unique and good traits, but under the unique breeding mode of our country, the trait decline of self-propagating populations is also very serious

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  • A kind of backcross breeding method of Litopenaeus vannamei

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Embodiment Construction

[0017] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0018] (1) Establishment of breeding base group

[0019] Using the introduced population with excellent growth characteristics entering the Chinese market as the original basic group, the original basic group was raised under the high-level pond culture mode, and shrimps that met the standard of 15g / tail after 90 days of cultivation were selected to enter the candidate group. Randomly select no less than 60 shrimps in the population to be selected as samples, measure the body weight and calculate the standard deviation of the body weight, take the average of the standard deviation of three parallel samples, if it is not higher than 0.2, it is considered to meet the standard.

[0020] Introduce the selected groups that meet the standards, the size of the introduction should not be less than 1 million, and separate them into several pools f...

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Abstract

The invention relates to a backcross breeding method for Litopenaeus vannamei. An original population with excellent growth characteristics is used as a breeding base group, and an inbred line is established through homogeneous selection of all siblings for 3-7 consecutive generations. Inbred lines are used as non-recurrent parents; individuals with good stress resistance in the original population are used as recurrent parents, and after 3-7 generations of backcross improvement and 1-3 generations of self-stabilization, the production seed production is formed system. This strain has the characteristics of fast growth, uniform individuality and high group yield, and is suitable for the existing high-level ponds and industrial farming models of prawns in my country.

Description

technical field [0001] The invention relates to the field of genetic breeding of aquatic animals, in particular to a method for backcross selection and breeding of Litopenaeus vannamei. Background technique [0002] Litopenaeus vannamei, also known as white Pacific shrimp, is produced in Central and South America. The wild population is distributed in the Pacific coast waters from Mexico to Chile. The natural water temperature in this area is above 20 degrees all year round. my country's Litopenaeus vannamei was first introduced from Hawaii, USA in 1988 by Zhang Weiquan, a researcher at the Institute of Oceanology, Chinese Academy of Sciences. Promote gradually. After 1999, the cultivation of Litopenaeus vannamei was carried out on a large scale across the country. The output of Litopenaeus vannamei in my country showed explosive growth after 2000, and it became the country with the highest production of Litopenaeus vannamei in the world. In recent years, my country The annu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 黄皓
Owner 渤海水产育种(海南)有限公司