Oreochromis niloticus and siniperca chuatsi gynogenesis method

A technology for Nile tilapia and gynogenesis, which can be used in fish farming, climate change adaptation, animal feed, etc., and can solve problems such as increasing difficulty

Active Publication Date: 2018-11-20
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the operation, it is also necessary to induce labor on

Method used

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Embodiment Construction

[0017] In order to allow those skilled in the art to understand the present invention more clearly and intuitively, the present invention will be further described below.

[0018] A method for gynogenesis of Nile tilapia and squid mandarin fish, comprising the steps of:

[0019] (1) Parental selection: select purebred Nile tilapia females over 1 year old, with a body weight of 0.5-1 kg, full hind abdomen, prominent genital pores, mature gonads, strong physique and good body shape as the female parent; Above 1 year old, with a body weight of 0.5-1 kg, a male mandarin fish with a cocked mouth that has mature gonads, and milky white semen will flow out when the abdomen is lightly pressed, as the male parent.

[0020] (2) Intensive cultivation of the female parent: put the female Nile tilapia selected in step (1) into the indoor recirculating aquaculture system to raise separately, and adjust the water temperature of the recirculating aquaculture system to stabilize at At around ...

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Abstract

The invention provides an oreochromis niloticus and siniperca chuatsi gynogenesis method. According to the method, gynogenesis is carried out with oreochromis niloticus as female parents and sinipercachuatsi as male parents, in the process, no ocytocic needs to be injected to the oreochromis niloticus and the siniperca chuatsi, siniperca chuatsi sperms do not need to be inactivated, zygotes do not need to be subjected to diploidization, after oreochromis niloticus ova and the siniperca chuatsi sperms are fertilized, about 10% of individuals can open mouths to eat, and it is found through flowcytometry detection ploidy that about 2-3% of individuals are diploid oreochromis niloticus, and the rest are haploids. As the haploids have serious malformation, the haploids can naturally die in the following culture process, the diploid individuals do not need to be screened again, and oreochromis niloticus diploid individuals obtained after gynogenesis can be obtained.

Description

technical field [0001] The invention relates to the technical field of new fish strain breeding, in particular to a method for gynogenesis of Nile tilapia (♀) and mandarin mandarin fish (♂). Background technique [0002] The Nile tilapia, Oreochromis niloticus (Linnaeus, 1758), belongs to the family Cichlidae of the order Perciformes. It is native to Africa and has been widely introduced from other regions. Because tilapia has a variety of food habits, fast growth, strong disease resistance, and is easy to breed in various farming models, the tilapia aquaculture industry has developed rapidly. At present, it has become the main farmed fish in the world and my country's largest export Freshwater aquaculture species, production and export volume accounted for about 40% and 70% of the global total respectively. Nile tilapia is the largest species of tilapia, and has fewer bone spurs, tender and elastic meat, and delicious taste, and its flavor is comparable to sea bream and flo...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K61/17A23K10/22A23K50/80
CPCA23K10/22A23K50/80A01K61/10A01K61/17Y02A40/81Y02A40/818
Inventor 曹建萌卢迈新李洋
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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