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Biological method for removing harpacticoida in juvenile stichopus japonicus nursery pond

A seedling pond and daphnia technology, which is applied to the biological field of eliminating daphnia in juvenile sea cucumber nursery ponds, can solve the problems of poor growth and low survival rate of sea cucumber seedlings, and achieve convenient use and no drug residue Hidden dangers, simple operation effect

Active Publication Date: 2014-11-12
大连棒棰岛海参发展有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a biological method for removing Daphnia japonica from juvenile japonicus seedling ponds, so as to solve the problems of low survival rate and poor growth of sea cucumber seedlings caused by Daphnia japonica in the process of raising sea cucumber seedlings. question

Method used

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Embodiment 1

[0011] On June 2, 2012, 500,000 juvenile sea cucumbers were cultivated in the No. 2 workshop of the nursery plant of Dalian Bangchuidao Sea Cucumber Development Co., Ltd., with a body length of about 0.1 cm. The attachment density of juvenile ginseng is 0.2-0.5 heads / cm 2 , water temperature 20-22°C, salinity 30, pH 8.0, dissolved oxygen 5mg / l, light 400lx, continuous aeration during the young ginseng cultivation process, feeding 2-3 times a day.

[0012] On June 10, it was found that there were a small amount of Daphnia mammoth in the above-mentioned five nursery ponds. On June 11, healthy shrimp seedlings of Penaeus vannamei with a body length of 0.5 to 0.6 cm were placed in No. 3 and No. 4 ponds. 25 shrimp seedlings per cubic meter of water; at the same time, in No. 5, No. 6, and No. 7 pools, use the traditional method of killing Daphnia daphnia with trichlorfon at a dosage of 2-3 mg / L. On June 13, the above five juvenile ginseng nursery ponds were observed, and no Daphnia...

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Abstract

The invention relates to a biological method for removing harpacticoida in a juvenile stichopus japonicus nursery pond and belongs to the field of aquaculture. Healthy penaeus seedlings with body lengths ranging from 0.4cm to 0.6cm are placed in the juvenile stichopus japonicus nursery pond, the number of seedlings is 11-50 per cubic water body, and the penaeus seedlings are one of fenneropenaeus chinensis seedlings, penaeus vannmei boone seedlings and penaeus japonicus seedlings. According to the biological method, the biological characteristics that the penaeus seedlings with the body lengths ranging from 0.4cm to 2cm ingest the harpacticoida and do not ingest and damage stichopus japonicus seedlings simultaneously are used, and the harpacticoida in stichopus japonicus seedling culture water bodies can be removed through the biological method. Compared with the existing drug method, the biological method has the advantages of being convenient to use, simple in operation, low in cost, free of potential drug residue risks, high in safety and the like.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a biological method for eliminating Daphnia mammoth in nursery ponds of juvenile sea cucumbers. Background technique [0002] In my country, sea cucumber has always been a traditional health tonic, and the market demand continues to expand, which greatly promotes the development of sea cucumber breeding industry. At the same time, the demand for seedlings of sea cucumber is increasing, and Daphnia mammoth is the main enemy of sea cucumber seedlings. Daphnia mammoth is a small crustacean with a body length of less than 3mm, and its mass reproduction will cause great harm to juvenile ginseng; the main manifestations are that daphnia mammoth reproduces quickly and has strong activity, not only competing with juvenile ginseng for bait and living space, It will also peck the body surface of juvenile ginseng, causing secondary infection and ulcers, and eventually the juvenile ginseng will b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01M99/00
Inventor 刘崎刘峰赵欣涛宫明春关庆生刘淇
Owner 大连棒棰岛海参发展有限公司
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