Technological method for temperature and light control of cynoglossus semilaevis Gunther parent fish spawning

A technology of light regulation and sole broodstock, applied in fish farming, medical science, climate change adaptation, etc., can solve the problem of no reports, and achieve the effects of promoting egg excretion, strengthening nutrition, and increasing egg production.

Inactive Publication Date: 2006-03-22
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

However, there is no report on the technology of regulating the spa

Method used

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  • Technological method for temperature and light control of cynoglossus semilaevis Gunther parent fish spawning
  • Technological method for temperature and light control of cynoglossus semilaevis Gunther parent fish spawning

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Embodiment approach

[0026] Semi-smooth tongue sole is a rare seawater fish in Northeast Asia, and its artificial breeding technology has not made a major breakthrough. The present invention explores a set of temperature and light control methods suitable for the gonad development law through the research on the gonad development law, so that the gonads of semi-smooth tongue sole can reach synchronous maturation under artificial control conditions and naturally and batch spawning, which promotes a breakthrough in large-scale seedling breeding .

[0027] Describe technical content of the present invention below by specific implementation example:

[0028] This study was carried out at the Maidao Experimental Base of the Yellow Sea Fisheries Research Institute and Qingdao Zhonghai Fisheries Co., Ltd. The specific implementation process is as follows:

Embodiment 1

[0029] Example 1: A preliminary experiment on spawning of broodstock of half-smooth tongue sole was carried out at the Maidao Experimental Base of the Yellow Sea Fisheries Research Institute by temperature and light regulation.

[0030] 1). Broodstock selection and feeding:

[0031] The experiment selected 30 half-smooth tongue sole broodstock, 12 females, and 18 males. The average weight of females was 2116 grams, and the average weight of males was 257 grams. The body shape and color of the broodstock are normal, and the health is not damaged (the back of the normal body color of the tongue sole is brown or dark brown, and the ventral surface is milky white). Broodstock age: both male and female are 3 years old.

[0032] Broodstock were put into the rectangular breeding pond (25m 2 , water depth of 1 meter) for cultivation. The water for cultivation is natural seawater filtered by sand, and the water quality conditions are: DO>6.0mg / L, pH=7.9-8.2, and salinity 30-32. Set...

Embodiment 2

[0041] Example 2: A large-scale production test of the broodstock spawning technology of semi-smooth tongue sole under light and temperature regulation was carried out in Qingdao Zhonghai Fisheries Co., Ltd.

[0042] 1). Selection and feeding of broodstock:

[0043] Sixty-five parent fishes of semi-smooth tongue sole were selected, female fish: male fish = 1:1.5, the average weight of female fish was 2315 grams, and the average weight of male fish was 278 grams. The body shape and color of broodstock are normal, and there is no damage in health. Parent fish age: Both female and male fish are over 3 years old. The broodstock is cultivated in a circular cement cultivation pond (with an area of ​​25m2) 2 , water depth 1m). The water for cultivation is sand filter natural sea water, and the temperature of the cultivation water is adjusted with boilers and refrigerators. The water quality conditions are: D0>6.0mg / L, pH=8.0-8.2, salinity 30-33.

[0044] Feed for broodstock: The...

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Abstract

The temperature and lighting controlling technology of Cynoglossus semilaevi Gunther parent fish spawning includes selecting parent fish, reinforced culturing and artificially controlling the water temperature and lighting for the parent fish to spawn. The technological key points of the present invention includes culturing of Cynoglossus semilaevi Gunther parent fish, water temperature regulation, lighting regulation, evening lamp setting, etc. to make the sexual glands of the parent fishes develop and mature synchronously, make the parent fishes spawn naturally in fixed time and obtain great amount of high quality fertilized eggs and high fertilization rate.

Description

Technical field: [0001] The invention belongs to the broodstock breeding technology of the half-smooth tongue sole, and is a method for artificially controlling light and water temperature to promote the gonad development of the half-smooth tongue sole broodstock so as to make them lay eggs naturally, intensively and in batches. Background technique: [0002] Cynoglossus semilaevis Günter (Cynoglossus semilaevis Günter), commonly known as Longli fish, ox tongue, sole rice, belongs to Plaiceiformes, Sole suborder, Cynoglossus semilaevis family, and Cynoglossus genus. It is naturally distributed in the coastal areas of my country, mostly in the Bohai Sea and the Yellow Sea. A species of benthic large rare fish. In the late 1980s, Chinese scientific researchers conducted preliminary research on tongue sole, which involved reproductive habits, spawning ecology, artificial nursery technology, early morphology and developmental characteristics (Jiang Yanwei et al. 1988; 1993, Yello...

Claims

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Application Information

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IPC IPC(8): A61D19/00A01K61/00
CPCY02A40/81
Inventor 柳学周孙中之庄志猛马爱军徐永江
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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