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A kind of artificial propagation method of roundmouth copperfish

A technology for artificial reproduction and round mouth copper fish, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems of different insemination methods, different induction drugs, different incubation devices, etc., to improve the survival rate and gonadal development. The effect of high temperature and less bacteria in water

Active Publication Date: 2021-08-06
WATER ENG ECOLOGICAL INST CHINESE ACAD OF SCI
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Problems solved by technology

[0003] Through literature search, it is found that an existing expert has reported a method for artificial induction of copperfish, but there are many differences with the present invention, such as different oxytocin drugs used, different insemination methods, and different hatching devices

Method used

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Embodiment 1

[0024] A method for artificial propagation of copperfish, the steps comprising:

[0025] 1. Selection of broodstock: 1) After fasting for 24 or 30 or 36 or 42 or 48 hours, gather the broodstock and select the broodstock according to the external characteristics. The vicinity of the cloaca is relatively soft, and the genital opening is red and swollen; the male fish’s pectoral fins are obviously chasing stars, rough to the touch, the genital opening is slightly red, and milky white semen flows out from the rear end of the abdomen when it is gently squeezed; In 2 sorting boxes, use air stones to aerate with oxygen during the period; 2) In order to ensure that the gonads of broodstock selected according to external characteristics are mature, use an egg digger (ordinary) to dig eggs, and extend the egg digger into the reproductive hole 2 or 3 cm, then turn to the left or right to insert into the ovary, gently turn the egg digger to dig out the eggs, the eggs dug out are full and ...

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Abstract

The invention discloses a method for artificial propagation of copperfish. The steps are: (1) Broodstock selection: According to the external characteristics of the broodstock and the eggs dug out by the egg digger, select the broodstock with high maturity of gonads as the broodstock for induced labor; (2) Preparation and injection of oxytocin drugs: Body weight using normal saline to prepare the oxytocic drug luteinizing hormone releasing hormone A 3 , fish pituitary gland and chorionic gonadotropin; the injection adopts the double injection method, the water temperature is 20.5~22.0°C, and the needle distance is 8~10 h; (3) Artificial induced labor and insemination: After injecting the oxytocin drug, check the broodstock from time to time, Ovulation and fertilization are found, and artificial insemination is carried out. The insemination method is wet fertilization; (4) Incubation: the obtained fertilized eggs are poured into a conical incubator for incubation, and the fry are moved to the fry incubation box for seed cultivation after they emerge from the film. The operation is simple, and the artificial reproduction rate and fry survival rate (above 85%) are effectively improved, laying a solid foundation for the proliferation and release of copperfish population resources.

Description

technical field [0001] The invention belongs to the field of aquaculture, and more specifically relates to an artificial propagation method of copperfish, which includes broodstock selection, preparation and injection of oxytocin drugs, artificial oxytocin, insemination and hatching, and is suitable for artificial reproduction of copperfish. Background technique [0002] Round mouth copperfish ( Coreius guichenoti ) belongs to Cypriniformes (Cypriniformes), Cyprinidae (Cyprinidae), Gotiongiae (Gotiongiae), copperfish genus, and distributes and grows in the middle and upper reaches of the Yangtze River. As a river migratory fish that lays floating eggs, its gonad development is highly dependent on the special habitat in the middle and lower reaches of the Jinsha River. In recent years, with the step-by-step development and operation of the Jinsha River cascade power stations, the habitat of the copperfish has been reduced, the migration channel has been blocked, and its repr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 董纯陈小娟曹恒源谢建军唐会元万成炎王小明杨少荣
Owner WATER ENG ECOLOGICAL INST CHINESE ACAD OF SCI
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