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Artificial propagation method for schizothorax dolichonema

A technology of artificial breeding and Schizothorax, which is applied in the field of fish farming, can solve the problems of resource decline and aquatic habitat shrinkage, and achieve high hatching rate and seedling survival rate.

Inactive Publication Date: 2018-07-17
武汉中科瑞华生态科技股份有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] At present, due to overfishing, environmental pollution, construction of water conservancy projects and other reasons, the aquatic habitat of Schizothorax has shrunk, and its resources have declined significantly.
However, the studies on Schizothorax longus only see reports on its taxonomy, geographical distribution, etc.

Method used

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Embodiment Construction

[0015] The principles and features of the present invention are described below, and the examples are only used to explain the present invention, but not to limit the scope of the present invention.

[0016] A method for artificial reproduction of Schizothorax long filaments provided by the invention, the steps are:

[0017] S1 broodstock collection

[0018] The broodstock of Schizothorax long filaments were collected from the middle and upper reaches of the Jinsha River by net and electric trapping, and 20ppm Ms-222 sedative was added for oxygenation and transportation in a fish tanker; Individuals were smeared with methylene blue, soaked in 2% table salt and oxytetracycline hydrochloride with 2.4 million IU / 100 kg of water for 15 minutes, and then transferred to a circular glass jar with a diameter of 3 m and a water depth of 0.9 m indoors. After 3 days, soak with 2ppm methylene blue for 2 hours to prevent small melon bugs, and after 5 days with 0.6ppm povidone iodine for 3...

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Abstract

The invention relates to an artificial propagation method for schizothorax dolichonema. The method comprises the following steps: parent fish collection, parent fish domestication, enhanced cultivation, parent fish selection, artificial spawning induction, artificial hatching and fry cultivation. The method provided by the invention realizes the situation that artificial domestication maturity ofthe schizothorax dolichonema is completed in a circulating water system under the condition of full manual control, realizes spawning and insemination of the schizothorax dolichonema through an artificial hormone-injecting manner, completes hatching of fertilized eggs and cultivation of fry by utilizing relevant facilities and equipment in the circulating water system, obtains a higher hatching rate of the fertilized eggs and fry survival rate, and provides a technical basis for artificial proliferation and releasing of the schizothorax dolichonema.

Description

technical field [0001] The invention relates to a fish culture method, in particular to a method for artificial reproduction of Schizothorax longiformis. Background technique [0002] Schizothorax dolichonema belongs to the family Cyprinidae, subfamily Schizothoracinae, genus Schizothorax. Mainly distributed in the Lancang River, Jinsha River and Yalong River system. Schizophrenia is a unique fish in the upper reaches of the Yangtze River. It is recorded as an endangered species (EN) in the "China Species Red List". It is a key protected fish in Sichuan Province and is the main economic fish in the production area. [0003] Schizophrenia longiformis body slightly longer, slightly flattened laterally; snout obtuse round, mouth lower, slightly arc-shaped; lower jaw with sharp horny edge; 2 pairs of whiskers, almost equal in length, both larger than eye diameter; strong dorsal fin spines; body coat Thin scales, with obvious scales on the chest, and the male fish has a bead on...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 胡佳祥
Owner 武汉中科瑞华生态科技股份有限公司
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