Patinopecten yesoensis natural seedling intermediate rearing method

A technology for intermediate breeding and scallops, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems that affect the breeding efficiency and product quality, it is difficult to breed large-sized seedlings, and the intermediate breeding time is short. The effect of intermediate temporary breeding period, reduction of breeding cost and improvement of utilization rate

Inactive Publication Date: 2010-03-03
ZHANGZIDAO GRP
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Problems solved by technology

[0003] In recent years, during the production process of scallop breeding, frequent diseases and increased mortality have occurred in the intermediate breeding, which affects the breeding efficiency and product quality; although natural seedlings can be used to improve, but natural scallop seedlings are also There is a problem that the intermediate breeding time is short and it is difficult to breed large-scale seedlings

Method used

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  • Patinopecten yesoensis natural seedling intermediate rearing method

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Embodiment 1

[0025] The intermediate breeding method of the natural seedlings of Ezo scallops, the natural seedlings collected in the sea area are divided into two stages, three stages of cultivation, and after the seedlings are separated, they are placed in cages and upside down. Breeding on floating rafts and bottom sowing.

[0026] When the shellfish seedlings are about 0.2cm in average, start to carry out secondary seedling separation. The mesh bag is 30×50cm, the mesh is 20-30 mesh, and the mesh size is based on the fact that most of the shellfish seedlings will not be lost. The net cage selects 0.5cm * 20 layers * 32 temporary raising cages, i.e. 20 layers of scallop culture cages with mesh diagonals of 0.5cm and cage disc diameters of 32cm. Brush shellfish seedlings off the attachment base, use 40 mesh net, 1.5mm, 3mm, 5mm extruded plastic mesh to make sieves of different specifications to remove miscellaneous shellfish, impurities, etc., screen seedlings with a size of less than 0...

Embodiment 2

[0040] In Lushun No. 1 Seedling Farm in 2007, the seedling bags were separated into seedling bags, seedlings were divided into three stages, and cages were inverted. The intermediate growth of natural seedlings is shown in Table 1 and Table 2, respectively.

[0041] Table 1

[0042]

[0043] Table 2

[0044]

Embodiment 3

[0046] In 2008, at No. 2 and No. 3 seedling harvesting fields on the side of the Bohai Sea in Lushun, the seedling bags were separated from the seedling bags, and the trial division began on June 24. At this time, there were more starfish, and there was no individual difference in the size of the early stage individuals and the scallop seedlings. , It is difficult to separate, so the separation officially began on June 28 and ended on July 11. It took 15 days and a total of 870 million seedlings were separated.

[0047] In order to strive for the breeding time, the natural shellfish seedlings are cultivated into large-scale seedlings with high survival rate in a short intermediate breeding period, and the three-level breeding is carried out in advance. Starting from July 6, the seedlings are directly separated on the basis of bag separation. Enter the 0.5cm breeding cage for breeding, until July 11, a total of 35,964 cages have been entered, and the number of seedlings is 201,3...

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Abstract

The invention relates to a patinopecten yesoensis natural seedling intermediate rearing method, comprising steps of secondary seedling separation, third rearing and cage transfering; secondary seedling is carried out when the height of a patinopecten yesoensis seedling hull is 0.2cm averagely, and seedlings with more than 0.5cm are caged, and seedling with 280-300 per layer and less than 0.5cm arearranged in a net bag, and each bag has 1500-1800 seedlings; when the seedling hulls more than 0.5cm accounts for 60-70 percent, third seedling is carried out, the seedlings in the cage have 280-300each layer, and sifted seedlings in the bag have no more than 1000; cage transfering is carried out after the peak adhesion period of patinopecten yesoensis, and the seedling is placed in the cage for80-100 per layer. By adopting the patinopecten yesoensis natural seedling intermediate rearing method, large and health patinopecten yesoensis natural seedling can be reared in a shortened rearing period.

Description

technical field [0001] The invention relates to a method for intermediate breeding of bivalve molluscs, in particular to a method for intermediate breeding of natural seedlings. Background technique [0002] Ezo scallop is a cold-water bivalve mollusc imported from Japan in the early 1980s. It is famous for its large size and good quality. After more than 20 years of growth and reproduction in my country, a geographical population adapted to the ecological environment of my country's sea areas has been formed. Changhai County in the northern part of the Yellow Sea is the largest breeding base for scallops in my country. Seedlings for scallop breeding must be healthy, and the size should be appropriate, usually more than 3cm, especially for bottom sowing seedlings. [0003] In recent years, during the production process of scallop breeding, frequent diseases and increased mortality have occurred in the intermediate breeding, which affects the breeding efficiency and product ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 薛真福王伟东鲁学辉
Owner ZHANGZIDAO GRP
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