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Hybrid seed production method of Chlamys grandis and Bay scallop

A technology for making scallops and hybrid seeds, which is applied in the application, climate change adaptation, fish farming and other directions, can solve the problems of affecting the economic benefits of breeding, reducing the meat yield, inbreeding decline, etc., and improving hatching rate and survival. The effect of reducing the rate of developmental malformation and promoting development

Active Publication Date: 2022-01-11
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bay scallops are hermaphroditic organisms, which can conveniently carry out self-breeding, hybridization and mixed-breeding in different ways, and are easy to artificially intervene and carry out research in various aspects; Seriously, there have been problems such as high mortality, smaller individuals, and lower meat yield, which have affected the economic benefits of breeding

Method used

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  • Hybrid seed production method of Chlamys grandis and Bay scallop
  • Hybrid seed production method of Chlamys grandis and Bay scallop
  • Hybrid seed production method of Chlamys grandis and Bay scallop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for hybrid seed production of Ctenophora huagui and bay scallop, comprising the steps of: selecting and temporarily raising the parents of the scallops, artificially inducing labor on the parents, collecting mature eggs and sperm for artificial insemination, and hatching the fertilized eggs In the above-mentioned fertilized egg hatching process, after the D-shaped larvae are obtained by culturing, the D-shaped larvae are subjected to the stress intervention process through the extreme environment, and then the offspring juveniles are cultivated. The hybrid seed production method utilizes two relatively distant parents for hybridization, improves the inter-gamete compatibility and the barrier phenomenon of zygote fertility, avoids the developmental asynchrony of hybrid fertilized eggs, and reduces the hybrid fertilization rate. The D-shaped larvae can initiate self-repair and secrete protective substances by stimulating the D-shaped larvae by using the extreme cu...

Embodiment 2

[0040] The hybrid seed production method of Huagui scallop and bay scallop, the specific steps are as follows:

[0041] (1) Taking the scallop scallop as the female parent and the scallop from the Gulf of Mexico as the male parent, the parental sexually mature individuals with strong and vigorous individuals were selected and placed in the temporary holding tank. The water temperature of this temporary holding tank is 26 °C, and the micro-aeration culture is carried out. During the period, golden algae and flat algae are fed as bait, supplemented with spirulina powder, egg yolk, etc. to promote the development of shell-friendly gonads. After 7 days, select the individuals with full and slightly bright glands, clear genital ducts, and clearly distinguishable eggs for induction of labor;

[0042] (2) On a sunny day, take out the Huagui scallops and Gulf scallops from the holding tank, and place them on the platform to dry for 45 minutes, then put the Huagui scallops and the Gulf...

Embodiment 3

[0049] The difference between this example and Example 2 is only that: the conditions of the extreme environmental water body in step (7) are: the temperature is 31°C, and the salinity is 31‰.

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Abstract

The invention provides a method for hybrid seed production of Chlamys grandis and Bay scallop, which belongs to the technical field of hybrid breeding, comprising: selecting and temporarily raising the parents of the above-mentioned scallops, artificially inducing labor on the above-mentioned parents, and then collecting mature eggs and sperm for artificial Fertilization, and, the process of hatching the above-mentioned fertilized eggs; in the above-mentioned hatching process of fertilized eggs, after the D-shaped larvae are cultivated, the D-shaped larvae are subjected to a stress intervention process in an extreme environment, and then the offspring spat are cultivated. The hybrid seed production method provided by the invention has a high fertilization rate, and the hatching process is optimized to improve hatching efficiency and save production costs; it can reduce the adhesion and bacterial contamination rate of fertilized eggs, reduce the mortality rate and deformity rate of fertilized eggs, and avoid It eliminates the asynchronous development of hybrid fertilized eggs, improves the survival rate and hatching rate of fertilized eggs; it can enhance the anti-stress ability of D-shaped larvae, overcome the phenomenon of high mortality of hybrid larvae, and increase the survival rate of hybrid offspring.

Description

technical field [0001] The invention belongs to the technical field of hybrid breeding, and in particular relates to a hybrid seed production method of C. Background technique [0002] Huagui scallops, also known as noble sea scallops, belong to the phylum of Molluscs, Petalbranch, Pterophyte, Pearl Shell, Scallopidae, and Cthole scallops. It is a warm-water shellfish, medium and large scallops that live in benthic life, but there are problems of long breeding cycle and low meat column yield. At present, large-scale breeding has been formed in Beihai, Guangxi, and Zhanjiang, Guangdong, and western Guangdong waters, becoming the shellfish in Beibu Gulf. The pillar industry of aquaculture. Bay scallops are hermaphroditic organisms, which can be easily mated in different ways, such as self-crossing, hybridization and interbreeding, and are easy to carry out manual intervention and research in various aspects; but in production practice, inbreeding declines due to small group b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/54A01K67/033
CPCA01K61/54A01K67/0334Y02A40/81
Inventor 刘炳舰
Owner ZHEJIANG OCEAN UNIV
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