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Reproductive regulation method of wolf eel parents

The technology of parent body and wolf eel is applied in the field of reproductive regulation of wolf eel parent body.

Active Publication Date: 2015-02-04
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In 2011 and 2012, the Yellow Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences took the lead in carrying out studies on the living habits and reproductive characteristics of wolf eels. If the temperature is too low or the temperature difference is too large, it will cause agenesis of gonads or asynchronous development of male and female, and it will not be possible to obtain fertilized eggs.

Method used

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Embodiment 1

[0034] In December 2012, we carried out reproductive regulation work on wolf eel broodstock in a farm in Yantai Development Zone. We successfully regulated and induced the parental gonads to mature and obtained high-quality fertilized eggs. The specific steps are as follows:

[0035] 1. Parental selection

[0036] Select 50 wolf eel females and 50 males each. The selection criteria are complete body shape, normal color, health, strong vitality, and good food intake. Under natural conditions, wolf eel broodstock cannot mate and reproduce until they are 7 years old, and their sexual maturity is relatively late. Therefore, under breeding conditions, male fish should be over 5 years old, with a body length of over 120 cm and a weight of over 1600 g; female fish over 6 years old, with a body length of over 140 cm and a weight of over 2000 g.

[0037] 2. Breeding of broodstock

[0038] 2.1 Density control

[0039] Control at 2~3 tails / m 2 , because wolf eels are monogamous, the ...

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Abstract

The invention discloses a reproductive regulation method of wolf eel parents, and belongs to the technical field of aquaculture. The method comprises the following steps of selecting parents, cultivating parent fish, inducting gonad development and obtaining germ cells; after regulation and control are performed by adopting the technical scheme of the method, 6-year-old female wolf eels and 5-year-old male wolf eels can copulate and breed, so that the copulation and breeding are earlier for 1 year and two years respectively than that of the parents which live under the natural conditions and copulate and breed at the age of 7; the difficult technical problem that development of a female wolf eel and a male wolf eel is out of sync, and synchronous egg reproduction is realized; the reproductive habits of a pair of female wolf and male wolf eel, such as living in the same place, living in a cave, and protecting eggs are satisfied through placing a PVC plastic pipe, the success rate of development and cultivation of the parent gonad reaches 85%, and the fertilization rate reaches 80%.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for regulating and controlling the reproduction of wolf eel broodstock. Background technique [0002] Wolf eel (Anarrhichthys ocellatus Ayres, 1855) belongs to Perciformes, Anarhichadidae, Anarrhichthys, English name Wolf-eel, Chinese name wolf eel, eye spot wolf fish, dragon eel etc., widely distributed in the northern part of the Pacific Ocean, found in the Sea of ​​Japan, Russia, the south coast of Alaska, the Aleutian Islands, the west coast of the United States and Canada, and even the Arctic Sea. Wolf eels are deep-sea fish that inhabit the seabed and can also adapt to the intertidal reef environment in coastal areas. Young wolf eels live in shallower waters, and then move to live in deeper underwater caves after they grow up. [0003] Compared with the main breeds of seawater factory culture in my country at present, wolf eel has a large individu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 陈四清刘长琳燕敬平刘春胜赵法箴
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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