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Argopecten purpuratus and Argopecten purpuratus hybrid scallop backcross seed production

A technology of purple scallop and scallop, which is applied in the field of backcross seed production of Zihai hybrid scallop and purple scallop, can solve the problems of low efficiency of backcross seed production and low overall yield of cultured scallop, and achieve the goal of promoting sustainable development, yield and resistance Improved reverse performance and remarkable growth advantage

Active Publication Date: 2022-07-29
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI +1
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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 solve the problems of low efficiency of backcross seed production between existing hermaphroditic scallop species and low overall yield of cultured scallops, and propose a backcross seed production method of Zihai hybrid scallop and purple scallop

Method used

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Experimental program
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Effect test

Embodiment

[0033] In December 2019, 2,000 pieces of scallops "Bohaihong" and purple scallops were added to the Laizhou nursery in Yantai, Shandong for fattening. The above-mentioned scallops "Bohaihong" and purple scallops were inbred lines that were continuously bred, that is, in March each year. In the mid-term, 500 scallops with excellent traits were selected from the scallop "Bohaihong" inbred population and the purple scallop inbred population respectively, and more than 200 inbred families of scallops "Bohaihong" and purple scallop were established. After all the families of scallops are selected, the larvae are mixed and cultured to adults, and the same method is used to continuously breed and purify more than 3 generations as inbred lines;

[0034] Then, the parent scallops obtained from the above-mentioned crossed lines were temporarily cultured, and the parent scallops "Bohai Red" (seawater at 10°C) and the parent scallops (seawater at 15°C) were temporarily cultured in seawater...

Embodiment 2

[0039] In December 2020, 3,000 scallop "Qingnong No. 2" and purple scallop inbred lines were included in the Laizhou nursery in Yantai, Shandong for fattening. The above-mentioned scallop "Qingnong No. 2" and purple scallop scallop were continuously selected inbred lines. That is, in mid-March every year, 500 scallops with excellent traits were taken as seed scallops from the scallop "Qingnong 2" inbred population and the purple scallop inbred population, respectively, and more than 200 scallops "Qingnong 2" and For the inbred family of the purple scallop, all the families of the same species of scallop are selected and the larvae are mixed and cultivated to the adult, and the same method is used to continuously breed and purify more than 3 generations as the inbred line;

[0040] Then, the above-mentioned parent scallops obtained from their respective crossed lines were temporarily raised, and the scallops "Qingnong No. 2" and purple scallops were temporarily raised in seawate...

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Abstract

The invention relates to the technical field of preparation of good offspring seeds of economic marine shellfish, in particular to a backcross seed production method for hybrid scallops of argopecten purpuratus and argopecten purpuratus. A large number of unfertilized eggs or eggs with low fertilization rate of hybrid scallops of argopecten purpuratus and argopecten purpuratus are utilized to perform interspecific backcross with high-concentration semen of argopecten purpuratus, so that the seed production efficiency and yield of backcross first-generation scallops are improved, and high-quality backcross first-generation scallop seedlings which are fast in growth, large in size, high in corm yield and strong in stress resistance are obtained. According to the method, the proportion of hermaphrodite argopecten purpuratus and argopecten purpuratus hybrid scallop backcross offspring and argopecten purpuratus backcross offspring can be remarkably increased, so that backcross scallop offspring seeds with remarkable growth advantages, high survival rate, high stress resistance and high yield are prepared on a large scale; in addition, the method can be used for preparing hermaphrodite scallop interspecific hybridization commodity fries with extremely remarkable heterosis on a large scale.

Description

technical field [0001] The invention relates to the technical field of preparation of economical marine shellfish fine seedlings, in particular to a method for backcrossing seeds of Zihai hybrid scallop (scallop "Bohai Red" or "Qingnong No. 2") and purple scallop. Background technique [0002] The bay scallop (Argopecten irradians irradians) is native to the Atlantic coast of the United States. Since it was introduced into China in 1982 and successfully bred artificially, it has been popularized and cultivated in the northern coast of my country for 40 years. However, after the introduction of bay scallops, they are only sterile for a long time, resulting in smaller and smaller commercial scallops, high mortality, slow growth, precocious puberty and other germplasm degradation problems during seedling and breeding, which have severely restricted my country's scallop aquaculture industry. healthy and sustainable development. In order to improve the germplasm of bay scallops, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 宁军号王春德刘桂龙张金盛
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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