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The artificial breeding method of clam clam

A small razor razor, artificial technology, applied in fish farming, application, climate change adaptation and other directions, can solve the problem of small razor razor no artificial seedling method, can only rely on natural capture and other problems, to achieve strong operability, scientific and simple process Effect

Active Publication Date: 2017-02-22
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for artificial seedling raising of razor clams with high yield in view of the current situation of the prior art, so as to solve the problem that there is no artificial seedling raising method for razor clams and can only rely on natural capture

Method used

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  • The artificial breeding method of clam clam
  • The artificial breeding method of clam clam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Firstly, annual sampling of razor clam is carried out. Take 30 razor clams of similar size and specifications, wash the sediment remaining on the shell, separate the soft part from the shell, put it in an oven at 60°C for 48 hours, and weigh the soft part with an electronic balance. Dry weight and shell dry weight, plumpness=(soft body dry weight / shell dry weight)×100%, to determine the specific spawning season of razor clams, the results are as follows figure 1 and 2 shown, from figure 1 It can be seen from the figure that from November to April of the following year, the fatness did not change significantly, and in May and June, the fatness rose rapidly; in early July, some individuals began to lay eggs, and in late July, most The individual has already laid eggs, and the fatness drops sharply, which is similar to that in April; in early August, the fatness begins to rise again, and the gonads quickly return to the mature stage, and enter the next spawning period. F...

Embodiment 2

[0032] The artificial seedling raising method of this razor clam mainly includes the following steps: (1) Cultivate parent shellfish: choose to buy gonads full and mature from late July to early September. The length of the shell is 6.92cm, the width of the shell is 2.22cm, and there is no parasite The razor clams are used as broodstock for artificial nursery broodstocking to ensure that they have never laid eggs to reduce costs;

[0033] (2) Artificial induction of labor: wash the brood shellfish selected in step (1) through filtered sea water, dry in the shade for 12 hours, put the brood shellfish into a net cage (150cm×80cm×20cm) to lay eggs, each net Put about 500 broilers in the box, that is, control the density of broilers in the cage to 2000 / m 3 ;

[0034] (3) artificial hatching: the parent shellfish in the step (2) starts to lay eggs at about 7h, the density of fertilized eggs is controlled to be 40 / ml, and hatching is carried out. The water temperature of the hatchi...

Embodiment 3

[0039] The artificial seedling raising method of this razor clam mainly includes the following steps: (1) Cultivate parent shellfish: choose to buy gonads full and mature from late July to early September, the shell length is 7.00cm, the shell width is 2.20cm, and there is no parasite The razor clams are used as broodstock for artificial nursery broodstocking to ensure that they have never laid eggs to reduce costs;

[0040] (2) Artificial induction of labor: wash the brood shellfish selected in step (1) through filtered seawater, dry in the shade for 11 hours, put the brood shellfish into a net cage (150cm×80cm×20cm) to lay eggs, each net Put about 450 broilers in the box, that is, control the density of broilers in the cage to 1800 / m 3 ;

[0041] (3) Artificial hatching: the parent shellfish in the step (2) starts to lay eggs at about 6.5h, and the density of fertilized eggs is controlled to be 35 / ml for hatching. The water temperature of the hatching is controlled to be 26...

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Abstract

The invention relates to a method for artificial seedling raising of razor clam, which is characterized in that: the method for artificial seedling raising of razor clam mainly includes the following steps: (1) cultivating parent shellfish, (2) artificially inducing labor, (3) artificially hatching, (4) "D" type larval cultivation, (5) juvenile cultivation and (6) steps of emergence, after 30-40 days of cultivation, the average shell length obtained is razor clams with an average shell length of 1.40-1.50 cm. Compared with the prior art, The advantage of the present invention is that: the present invention has successfully researched a seedling raising method of razor clams, the technological process is scientific and simple, and the operability is strong. , the steps of spat cultivation, the oxytocin discharge rate reaches 50%, the hatching rate reaches 80%, and the total survival rate reaches 8-12%. A total of more than 8.35 million shellfish with an average shell length of 1.59mm have been raised, realizing the artificial breeding of razor clams. The breakthrough in the method provides a reference for the realization of large-scale seed production.

Description

technical field [0001] The invention relates to an artificial seedling raising technique for aquaculture, in particular to an artificial seedling raising method for razor clams. Background technique [0002] Razor clams are widely distributed in my country, from the Liaodong Peninsula in the north to Hainan in the south. They often inhabit the intertidal zone 98 meters from the subtidal zone. Important position. In recent years, with the improvement of people's living standards, the increase in demand for bivalve molluscs and other seafood has led to overfishing, coupled with the increasingly serious pollution of offshore waters, resulting in the gradual decline of razor clam resources, the decrease in catches, the relocation of fishing grounds, and the individual tendencies. The condition of natural resources is not optimistic. Therefore, it is imminent to carry out the research on the artificial seedling raising technology of clam clam. But at present, there is no researc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 冀雄飞宋微微王春琳母昌考李荣华
Owner NINGBO UNIV