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Artificial seedling method for ruditapes philippinarum in high-salt sea area in high temperature season

A Philippine clam and sea area technology, applied in fish farming, application, climate change adaptation, etc., can solve the problem of low emergence rate of artificial seedlings, and achieve the effect of normal artificial breeding

Active Publication Date: 2017-06-30
NINGBO UNIV
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Problems solved by technology

However, if the seedling time of the shellfish is advanced, then the seedling must be raised in the high temperature season (end of August and early September), but in the actual production process, in the high temperature season when the water temperature is greater than 28 ° C, the salinity of the water body is greater than 25. The emergence rate of artificial seedlings is very low

Method used

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  • Artificial seedling method for ruditapes philippinarum in high-salt sea area in high temperature season
  • Artificial seedling method for ruditapes philippinarum in high-salt sea area in high temperature season

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Effect test

Embodiment 1

[0020] On September 3, 2015, 120 catties of Philippine clam clam shells were taken from the Shanwei Sea Area of ​​Guangdong Province to the shellfish breeding farm of Zhangzhou Baozhi Aquatic Technology Co., Ltd. in Fujian Province. In 4 cement pools of 8.5 × 3.5 × 1.2m (length × width × depth) continuously filled with air, the water for induction of labor is the natural seawater of Zhao'an Bay where the company is located after sand filtration into the pool. Degree 28.3. After 16 hours of continuous inflation, the parent shellfish in the 4 pools laid eggs one after another. After 12-16 hours, the D-shaped larvae were completely metamorphosed. All the seedlings were transferred to the other 4 pools with a 300-mesh cylindrical nylon sieve silk bag, counted, 1 # -4 # The number of larvae in the pool was 2.53, 2.64, 2.43 and 288 million respectively.

[0021] At this time, the golden algae were fed to maintain the density of golden algae in the water body at 5-8 cell·μL -1 Abo...

Embodiment 2

[0028] On September 21, 2015, in the shellfish seedling farm of Zhangzhou Baozhi Aquatic Technology Co., Ltd., Fujian Province, 0.5kg of Philippine clam seedlings that had just adhered in a water body with a salinity of 19.0 were taken and spread evenly into 4 continuous air-filled holes. In the cement pool of 8.5×3.5×1.0m (length×width×depth), the initial salinity of the water in the 4 pools was adjusted to 19.0, and the sea mud dried at 200°C and filtered through a 200-mesh nylon screen was added. , Make the sea mud at the bottom of the pool about 1mm thick, and keep the water temperature at 27-30 ℃. After adding natural seawater with a salinity of 29.5, the salinity rose to 21.5 after 1 day, 24.3 after 2 days, and 26.5 after 3 days. The salinity of 2 pools continued to rise to the natural water salinity of 29.5, and then the natural water salinity was maintained. 29.2-30.6; the other 2 pools have always kept the water salinity in the range of 25-27. Feed Chaetoceros and Th...

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Abstract

The invention relates to a method for achieving industrial breeding of ruditapes philippinarum by adjusting the salinity of water under a high temperature condition of a high-salt sea area. Particularly, the invention provides a method for adjusting the salinity of water into a certain range by adding fresh water or seawater separately in a spawning incubation phase, a floating stage and an attachment stage of the ruditapes philippinarum, thereby achieving smooth abnormal attachment of planktonic larvae and effectively promoting fast growth of juvenile mollusk.

Description

technical field [0001] The invention belongs to the technical field of shellfish seedling breeding, and in particular relates to an artificial seedling breeding method for Philippine clam in high-salt sea areas during high temperature seasons. Background technique [0002] Philippine clam (Ruditapes philippinarum) is distributed in coastal areas from Guangdong to Liaoning in my country. Since the breakthrough of semi-artificial seedling technology in open-air ponds in the last century, it has rapidly developed into the largest species of buried shellfish in my country. [0003] The semi-artificial seedling industry in open-air ponds has the advantages of large output value and low cost, and has been the main seed breeding method for Philippine clam for many years. However, because this method is greatly affected by climate and water quality conditions, the stability of seedling breeding in ponds in different regions and in the same pond in different years is getting worse a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54
CPCY02A40/81
Inventor 汪焱梁徐继林杨之明孙天成马斌严小军
Owner NINGBO UNIV
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