Hybrid breeding method of Lutmria maxima jonas and Lutraria philippinarum

A technology of hybrid breeding and large otter clam, which is applied in the field of aquaculture breeding, can solve the problems of undisclosed related technologies of otter clam hybrid breeding, achieve high academic level and practical value, avoid fertilization, and reduce death effects

Inactive Publication Date: 2012-12-26
广西海洋研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after searching, at present, there are few researches on the genus Rex at home and abroad, and there is no disclosure of the related technology of hybrid breeding of Rex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Steps for hybrid breeding:

[0020] 1. Selective breeding of broodstock: 7.5kg of wild giant otter clams caught in the coastal waters of Beihai, Guangxi, and 10kg of wild Australian otter clams caught in the sea area of ​​Halong Bay, Vietnam. The individuals selected as broodstock all have large, disease-free and It has the characteristics of good integrity, good water pipe contraction and vitality, and full gonads. The broodstock is domesticated and cultivated separately in a sand-bottom culture pool with a water depth of 1.3m and a thickness of 15cm. During the broodstock culture of the big otter clam, the seawater temperature is controlled at 28-29°C, and the seawater salinity is 25-28. The Australian otter clam broodstock culture pool The seawater temperature is controlled to gradually increase from 16°C to the natural seawater temperature, which is 28-29°C, and the seawater salinity is also fine-tuned to the seawater salinity of the site, which is 25-28. Wash the ...

Embodiment 2

[0027] Steps for hybrid breeding:

[0028] 1. Selective breeding of broodstock: 60kg of wild giant otter clams caught in the coastal waters of Beihai, Guangxi, and 54kg of wild Australian otter clams caught in the sea area of ​​Halong Bay, Vietnam. It has the characteristics of good temperature, good water pipe contraction and vitality, and full gonads. The broodstock is domesticated and cultivated separately in a sand-bottom culture pool with a water depth of 1.3m and a thickness of 15cm. During the broodstock culture of the big otter clam, the seawater temperature is controlled at 28-29°C, and the seawater salinity is 25-28. The Australian otter clam broodstock culture pool The seawater temperature is controlled to gradually increase from 16°C to the natural seawater temperature, which is 28-29°C, and the seawater salinity is also fine-tuned to the seawater salinity of the site, which is 25-28. Wash the sandy bottom daily during parent-child culture, mainly to wash away the...

Embodiment 3

[0035] Seedling steps

[0036] 1. The selection and cultivation of broodlings: basically the same as in Example 1, select mature, healthy, gonad-filled high-quality big otter clam broodlings 82.5kg, Australian otter clam broodstocks 72.5kg;

[0037] 2. Artificial insemination: the same as Example 1, the difference is that the eggs are washed after fertilization, that is, the fertilized eggs are sinking eggs. After all the eggs are fertilized, remove the supernatant and collect high-quality fertilized eggs that sink to the bottom. Repeat three times , to remove the organic matter and excess sperm that are carried when sucking eggs and sperm;

[0038] 3. Artificial hatching: same as embodiment 1;

[0039] 4. Larvae selection: the same as in Example 1;

[0040] 5. Cultivation of larvae: basically the same as in Example 1, the average metamorphosis rate of the male parent and the large otter clam are 65.53%; the average metamorphosis rate of the female parent and the large otter...

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PUM

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Abstract

The invention discloses a hybrid breeding method of lutmria maxima jonas and Lutraria philippinarum. The lutmria maxima jonas grows rapidly and is high in price, but cultivation is affected by bottom tide, storm and diseases, and annual fluctuation of the output is large. The breeding mode for Lutraria philippinarum is simpleand economic effect is obvious, but the disease resistance of the young Lutraria philippinarum is poor, and it is difficult to artificially breed. The method comprises the steps of: carrying out interspecific hybridization according to the situation that lutmria maxima jonas and Lutraria philippinarum are geographically isolated and different in reproductive biology characteristics, and breeding filial generation with merits such as strong disease resistance and fast growth speed. According to the invention, the measures such as purchasing and transporting of parent shellfish, domesticating of the parent shellfish, artificial fertilization and hybridization, incubation and superior varity selection, cultivation of planktonic larvae, larval metamorphosis, juvenile mollusk cultivation and intermediate cultivation in a sear area are adopted. The hybrid breeding method is scientific and reasonable in technological process and strong in maneuverability, and hybridization of two types of geographically isolated clams belonging to Lutraria is achieved. The method disclosed by the invention is fewer in occupied resources and low in cost, and natural resources are fully utilized.

Description

technical field [0001] The invention relates to a method for binary hybrid breeding of marine bivalve molluscs, in particular to a method for hybrid breeding of giant otter clams and Australian otter clams, and belongs to the technical field of aquaculture breeding. Background technique [0002] The giant otter clam (Lutmria maxima jonas) and the Australian otter clam (Lutraria philippinarum) belong to the subclass (Mactracea) of the class Lamellibranchia, and the genus (Lutraria) of the clam family (Mactridae). , its tender meat, delicious taste and rich nutrition, is a rare seafood treasure that is liked both at home and abroad. In nature, the giant otter clam mainly lives in the subtidal zone in the southern waters of my country to the sandy muddy seabed with a water depth of 10 meters. The Australian otter clam mainly lives in the Vietnamese sea area of ​​the Beibu Gulf, and is distributed along the coasts of Southeast Asia such as Australia. Both the giant otter clam a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 彭慧婧邹杰杨家林童万平文雪蒋艳苏琼陈瑞芳
Owner 广西海洋研究所有限责任公司
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