A large-scale breeding method for preventing and controlling alien marine shellfish biological invasion

A technology of biological invasion and breeding method, which is applied in the field of large-scale pond culture of hard shell clams, can solve the problems of reduced survival rate, etc., and achieve the effects of increasing foreign exchange earnings from exports, improving breeding benefits, and increasing economic benefits

Active Publication Date: 2022-05-10
BINZHOU OCEAN & FISHERIES RES INST
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Problems solved by technology

The tolerance of hard shell clams to salinity increases with age, but it is inversely proportional to temperature. When the salinity is low and the temperature is high, the survival rate will be significantly reduced. The upper limit of the survival temperature is 42°C

Method used

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  • A large-scale breeding method for preventing and controlling alien marine shellfish biological invasion
  • A large-scale breeding method for preventing and controlling alien marine shellfish biological invasion
  • A large-scale breeding method for preventing and controlling alien marine shellfish biological invasion

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Embodiment 1

[0048] A large-scale cultivation method for preventing and controlling alien marine shellfish biological invasion, which comprises the following steps:

[0049] (1) Selection of tidal flat ponds and design of ponds Select the primary brine production area (prawn breeding area) of the saltworks, and carry out mixed culture of prawns and hard shell clams in areas where the salinity does not exceed 45. For details, see figure 1 . Hard shell clams reach the commercial standard and become sexually mature after 2 years of breeding. The remaining individuals will naturally lay eggs and breed offspring. Parent clams with a shell length of 4-5 cm can lay 500,000 to 5 million eggs at a time, and their larvae may With the discharge of the tail water from the cultivation, it flows into the next-level brine production area, but with the evaporation of seawater, the salinity in the brine production area (or high-salt aquaculture area) is getting higher and higher. When the salinity is above...

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Abstract

The invention belongs to the field of marine shellfish cultivation, and in particular relates to a large-scale cultivation method for preventing and controlling the invasion of alien marine shellfish organisms. The method comprises steps such as selection of tidal flat ponds and pond design, preparation before putting seedlings, stocking of seedlings, management of growth period, feeding management, disease prevention and control, growth detection, management of hard shell clams in overwintering period, and harvesting. Utilizing the tidal flat breeding area of ​​coastal salt fields in my country, using the polyculture of clams and prawns, the ecological conditions of the prawn farming ponds are improved, and the benefits of pond farming are improved; the risk of breeding is reduced, and the salinity is used for reproductive ecological isolation, blocking shellfish The way for larvae to flow to the sea and isolate the way for biological invasion.

Description

technical field [0001] The invention belongs to the field of marine shellfish cultivation, and in particular relates to a large-scale cultivation method for preventing and controlling the invasion of foreign marine shellfish organisms, and more specifically, relates to a large-scale pond cultivation method for hard-shelled clams (Clam americana). Background technique [0002] The introduction of alien marine species has made an important contribution to increasing domestic marine ecological biodiversity and improving the production capacity and quality of marine products, such as scallops, abalone, salmon, and turbot. After some alien species arrive in the new settlement area, due to the disappearance of the ecological pressure of the original habitat, they grow explosively in the new habitat and lose control, becoming invasive species. Once the alien species invade, they will compete with the native species for living space and food. Occupying the ecological niche of indige...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/54A01K61/59
CPCA01K61/54A01K61/59Y02A40/81
Inventor 郑述河王玉清张凯孙同秋王冲
Owner BINZHOU OCEAN & FISHERIES RES INST
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