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Crossbreeding method of Leuciscus idus female fish and Leuciscus waleckii male fish

A technology for hybrid breeding of tilapia varsius, applied in fish farming, application, climate change adaptation, etc., can solve the problems of low fertilization rate, low survival rate, poor maturity of broodstock, etc. The effect of reducing mortality and increasing opening rate

Pending Publication Date: 2020-06-19
辽宁省淡水水产科学研究院
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Problems solved by technology

[0003] At present, the breeding technology of yalo fish mainly has the following problems: (1) the breeding water temperature is low, the broodstock maturity is poor, and the fertilization rate is low; (2) the early breeding water temperature of the seedlings is low, the biological bait in the pond is not easy to cultivate, and the seedlings survive after entering the pond low rate

Method used

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  • Crossbreeding method of Leuciscus idus female fish and Leuciscus waleckii male fish
  • Crossbreeding method of Leuciscus idus female fish and Leuciscus waleckii male fish
  • Crossbreeding method of Leuciscus idus female fish and Leuciscus waleckii male fish

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Embodiment 1

[0039] 1. Method:

[0040] (1) Parent selection: On March 26, 2019, the water temperature was 8-12°C. Select individuals with normal body shape, no trauma, complete scales and strong vitality from the 3-year-old parents. Such as figure 1 As shown, 30 individuals with white granular "star chasing" on the head and a body weight of 200g-320g were selected for the male fish of the genus Waschii. 60 females of high body crocodile fish with enlarged abdomen, separable eggs in the ovary, body weight of 251g-410g, see figure 2 . figure 2 In the middle, on the left is the male of the crocodile, the middle is the female of the high-body crocodile, and on the right is the ovary of the high-body crocodile.

[0041] (2) Temporary care in isolation: if image 3As shown, the selected male and female parents were placed in temporary breeding cages with a size of 2.2m×1.5m×1.5m for isolation and temporary breeding. 8.5, dissolved oxygen ≥ 5.0mg / L, temporary stocking density of 20 fish / ...

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Abstract

The invention relates to the field of aquaculture, in particular to a crossbreeding method of Leuciscus idus female fish and Leuciscus waleckii male fish. The method comprises the specific steps of parent selection, isolated temporary rearing, artificial fertilization, debonding incubation and fry rearing. The leuciscus wallichii is small in size and low in growth speed; the Leuciscus idus is large in size and relatively high in growth speed. Through the technical processes of parent selection, isolated temporary rearing, artificial fertilization, debonding incubation and fry rearing, crossbreeding of the female Leuciscus idus and the male leuciscus wallichii is achieved. By hybridizing the Leuciscus idus female fish and the leuciscus wallichii male fish, a new leuciscus hybrid variety which grows fast and is good in meat quality can be cultivated, and the method is of great significance in meeting the living needs of people, enriching new freshwater aquaculture varieties and promotingindustrial development of leuciscus.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for cross-breeding a female tall crocodile and a male crocodile. Background technique [0002] Yaluo fish is tender in quality, delicious in taste and high in economic value. It is one of the "three flowers and five Luos" in Northeast China. It is a rare freshwater fish and is very popular in the market. Leuciscus waleckii Dybowski is mainly distributed in various water systems in the Heilongjiang River Basin. It is also produced in the lower reaches of the Yellow River, Luanhe River, Daihai Lake, and Dali Lake in Inner Mongolia. Leuciscusidus Linnaeus is mainly distributed in Europe and Northwest Asia. It is only found in the Irtysh River system in my country. The two kinds of crocodile belong to Cyprinidae, crocodile subfamily and genus crocodile; the tall crocodile is a typical cold-water fish with a large individual, which can generally grow to 1kg; They mainly live in n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 杨培民金广海刘义新王雷解涵胡宗云
Owner 辽宁省淡水水产科学研究院
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