Protospecies harvesting, domesticating and artificial propagation method of leuciscus merzbacheri

Abstract

The invention belongs to the fishing industry, and relates to a protospecies harvesting, domesticating and artificial propagation method of leuciscus merzbacheri. The method comprises the following steps: protospecies harvesting, long-distance and short-distance transportation, protospecies harvesting temporary culture, protospecies disinfection, domesticating, parent intermittent rapid running water stimulation method, male and female identification, parent fish prenatal intensified cultivation, artificial spawning induction, artificial egg collection and fertilization and artificial incubation. The method has the characteristics that water is effectively saved, large-scale artificial breeding is facilitated, the death rate is effectively reduced, the hatching rate is increased, and the induced spawning rate can reach 90% or above.

Description

technical field [0001] The invention belongs to the fishing industry and relates to a method for collecting, domesticating and artificially breeding the original species of the Junggar crocodile. Background technique [0002] Junggar Yaluo fish (also known as Xinjiang Yaluo fish) is a fish of the genus Yaluo fish in the subfamily of Cyprinidae Yaluo fish. At present, it is only distributed in the Junggar Basin in Xinjiang, China. It is distributed in the estuary area of ​​Kuitun River into Lake Aibi. It is a landmark species in this area and a unique indigenous fish in Xinjiang. It is the only fish with high economic value among the rivers in the Junggar Basin. The key species (keyspecies) or flagship species (flagshipspecies) of aquatic organisms. [0003] There are three species of Yaluo in Xinjiang: Junggar Yaluo, Baikal Yaluo and Gaoti Yaluo. In terms of world geographical division, the Junggar Yaluo is a unique fish in Xinjiang. Chinese scholar Li Sizhong believes tha...

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Problems solved by technology

However, since the 1950s, due to human economic activities, overfishing, the introduction of alien species, excessive water use in agriculture, and the construction of many dams, reservoirs, water diversion hubs and other water conservancy facilities on rivers such as the Jinghe River and the Kuitun River, The channelization of natural rivers, reduction of water volume, fragmentation of fish habitats and ecological barriers in which the Junggar crocodile lives, have caused the distribution range of the Junggar crocodile to shrink continuously, and the population resources have declined sharply, directly affecting the ecological protection of the fish. threaten

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