A Forecasting Method for Improving the Efficiency of Natural Seedling Harvesting of Hong Kong Oyster

A technology of Hong Kong oysters and oysters, applied in the field of forecasting to improve the efficiency of natural seedling harvesting of Hong Kong oysters, to achieve the effects of ensuring the quality of seedlings, increasing the quantity of natural seedlings, and solving the instability of quantity

Active Publication Date: 2015-09-30
广西阿蚌丁海产科技有限公司
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  • Description
  • Claims
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Problems solved by technology

In fact, there are some problems in this method. Whether oyster larvae can be collected depends on the right time, place and people, and scientific seedling forecasting technology.

Method used

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  • A Forecasting Method for Improving the Efficiency of Natural Seedling Harvesting of Hong Kong Oyster
  • A Forecasting Method for Improving the Efficiency of Natural Seedling Harvesting of Hong Kong Oyster
  • A Forecasting Method for Improving the Efficiency of Natural Seedling Harvesting of Hong Kong Oyster

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Embodiment 1

[0028] This embodiment improves the forecasting method of Hong Kong oyster natural seedling harvesting efficiency, and its technical scheme is as follows figure 1 As shown, the specific steps are:

[0029] (a) Collection of larvae: From June to July 2013, during the breeding season of oysters in Hong Kong, oyster samples were regularly collected in Guandu, Zhanjiang, to observe whether oviposition and semen were laid. On June 20, after the typhoon passed, the oysters were found to be thin, and there were oyster larvae in the sea area. After 15 days, the larvae developed to the pre-eye point larvae, and the shellfish larvae were collected at 0.5-1.0m on the surface of the sea area with a 300-mesh silk net. , after concentration, placed in a sampling bottle as a sample.

[0030] (b) Classification of phenotypes: For the collected samples, they are firstly classified by microscope observation. According to the characteristics that the left and right shells of oyster larvae vary...

Embodiment 2

[0043] (a) Collection of larvae: During July-August 2013, during the breeding season of oysters in Hong Kong, after the seedlings of Example 1 were collected in Guandu, Zhanjiang, the gonads of oysters gradually recovered. On July 17, after the tropical storm, it was found that the oyster gonad wasted again, according to figure 1 As shown, after 13 days, the larvae developed to the pre-eye point larvae, and the shellfish larvae were collected at 0.5-1.5m from the surface of the sea area with a 300-mesh silk screen, concentrated, and placed in a sampling bottle as a sample.

[0044] (b) Phenotype classification: According to the method in Example 1, it was found that in this sea area, most of the oyster larvae have entered the early stage of the eye point, and a few are in the early and middle stage of the shell top ( figure 2 ); the sample contained a small number of barnacle larvae. The visual field method was used to count and found that the proportion of oyster larvae was...

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Abstract

The invention discloses a forecasting method for improving natural offspring seed collection efficiency of Crassostrea hongkongensis. According to the forecasting method disclosed by the invention, through links: larva sample collection, phenotype classification, molecular recognition, comprehensive evaluation, timely offspring seed collection and the like, a large number of Crassostrea hongkongensis juvenile mollusks can be successfully obtained from a natural sea area. Not only is the natural seed collection amount improved and the offspring seed quality ensured but also the problems of unstable amount, mixed types and multiple repeated collection caused by blind offspring seed collection in the past are solved, and therefore, sufficient offspring seed sources are provided for the resource recovery of the Crassostrea hongkongensis and the development of the culture industry of the Crassostrea hongkongensis.

Description

Technical field: [0001] The invention belongs to the field of shellfish seed breeding in marine agriculture, and in particular relates to a forecasting method for improving the efficiency of Hong Kong oyster natural seedling collection. Background technique: [0002] Hongkong oyster Crassostreahongkongensis is the main breeding economic species in South China coastal culture. It likes to live near the estuary or near the place where there is fresh water injection. It is mainly distributed in Guangdong, Guangxi and other places. The annual output is more than 1.3 million tons, and the output value is 8-10 billion. Yuan (China Fisheries Yearbook, 2013). [0003] Hong Kong oysters have been cultivated in my country for nearly a thousand years. Traditionally, oyster farmers use natural harvest as the only source of seedlings. Scholars have long begun to study the natural seedlings of oysters, including oysters near the river (Hu Jiacai et al., 1994; Chen Zhenhan & Li You, 1997;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00C12Q1/68
CPCY02A40/81
Inventor 肖述张跃环张扬喻子牛
Owner 广西阿蚌丁海产科技有限公司
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