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A kind of artificial seedling raising method of philippine clams in high-temperature season in high-salt sea area

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

Active Publication Date: 2020-03-13
NINGBO UNIV
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  • Claims
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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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  • A kind of artificial seedling raising method of philippine clams in high-temperature season in high-salt sea area
  • A kind of artificial seedling raising method of philippine clams in high-temperature season in high-salt sea area

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Effect test

Embodiment 1

[0020] On September 3, 2015, 120 catties of Philippine clams 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. After drying in the shade for 6 hours, an average of 30 catties was taken and placed in the In 4 cement pools of 8.5×3.5×1.2m (length×width×depth) continuously filled with air, the water for labor induction was natural seawater from Zhao’an Bay, where the company is located, and then filtered into the ponds. Degree 28.3. After 16 hours of continuous aeration, the broodstock in the 4 ponds laid eggs one after another. After 12-16 hours, the D-shaped larvae metamorphosed completely, and all the seedlings were transferred to the other 4 ponds with a 300-mesh cylindrical nylon sieve bag, counted, and 1 # -4 # The number of larvae in the pond was 253, 264, 243 and 288 million, respectively.

[0021] At this time, feed golden algae to maintain the density of golden...

Embodiment 2

[0028] On September 21, 2015, in the shellfish seedling field of Zhangzhou Baozhi Aquatic Technology Co., Ltd., Fujian Province, 0.5kg of Philippine clam seedlings that had just attached to a water body with a salinity of 19.0 were taken, and evenly sprinkled into 4 mouths of continuous air-filled In the 8.5×3.5×1.0m (length×width×depth) cement ponds, the initial salinity of the four ponds was adjusted to 19.0, and the sea mud dried at 200°C and filtered through a 200-mesh nylon sieve was added. , so that the sea mud at the bottom of the pool is about 1mm thick, and the water temperature is kept at a natural water temperature of 27-30°C. 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 29.5 in the natural water body, and then kept the natural water body salinity 29.2-30.6; the other 2 pools have kept the water salinity within the range of 25-27. Feed C...

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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 cultivation, and in particular relates to an artificial seedling cultivation method for Philippine clams in high-temperature seasons in high-salt sea areas. Background technique [0002] Philippine clam (Ruditapes philippinarum) is distributed in my country from Guangdong to Liaoning coastal areas. Since the breakthrough of semi-artificial nursery 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 open-air pond semi-artificial seedling industry has the advantages of large output value and low cost. It has been the main seedling cultivation method for Philippine clams 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...

Claims

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Application Information

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Patent Type & Authority Patents(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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