Artificial propagation method of Ptychobarbus kaznakovi

Abstract

The invention provides an artificial propagation method of Ptychobarbus kaznakovi, which comprises the following steps: parent fish rearing: selecting wild Ptychobarbus kaznakovi with no body surface injury and body weight of 400-1300 g as parent fish for rearing, wherein in the rearing process, the daily feeding amount of feed is 0.1-1% of the body weight of the parent fish; parent fish selection: selecting disease-free and robust mature Ptychobarbus kaznakovi as a spawning induction parent; artificial spawning induction: firstly, only injecting a first spawning induction agent into female fish in spawning induction parents for compatibility; after 24 h, continuously injecting a second oxytocic into the female fish for compatibility, and injecting a third oxytocic into the male fish in the oxytocic parents for compatibility; artificial insemination: temporarily rearing the induced spawning parents in an induced spawning pond at the water temperature of 9-14 DEG C, and checking female fishes in the induced spawning parents once every 8 h after 48 h; pressing the belly of the female fish slightly, if roes are discharged, squeezing the roes into a basin, then squeezing the semen of the male fish into the basin, and conducting stirring, standing and cleaning to obtain fertilized roes; and hatching: hatching fertilized roes obtained by using flowing water, and obtaining the Ptychobarbus kaznakovi fry after the hatching is completed.

Description

technical field [0001] The invention belongs to the technical field of fish reproduction, and in particular relates to an artificial reproduction method of phyllotrichia niguri. Background technique [0002] Ptychobarbus kaznakovi Nikolsky, scientific name: Ptychobarbus kaznakovi Nikolsky, is a fish of the genus Ptychobarbus Cyprinidae of Cyprinidae, commonly known as flower fish, and is a unique species in China. Naked bellyfish is distributed in the upper reaches of the Jinsha River, Lancang River, and Nujiang River, etc., and generally lives in the flowing water environment of the main and tributary streams. In recent years, due to high-intensity fishing, the amount of fishing far exceeds the amount of natural reproduction, changes in the ecological environment, water pollution and other reasons, resulting in a sharp decline in the population. It has been basically extinct in some river sections, and there are only a small number of individuals in remote upstream areas. ...

AI Technical Summary

Problems solved by technology

[0003] Regarding the research work on the naked-bellied phyllid, some scholars first carried out classification and distribution studies, such as Wu Yunfei, Wu Cuizhen (Qinghai-Tibet Plateau Fish, Sichuan Science and Technology Press, 1991.415-419), Tibet Autonomous Region Fisheries Bureau (Tibetan Fish Species and their resources, China Agricultural Press, 1995.103-109); some scholars have conducted research on the age and growth of phyllotrichia, such as Li Fei, Yang Dedong, He Yongfeng, Yao Dedong, Yao Jianwei, Zhu Tingbing (gifted to Qu Bare The age and growth of phyllids, Freshwater Fisheries, 2016 (06)), Li Zhao, Zhu Fengyue, Liu Mingdian, Wang Qi, Liu Shaoping, Duan Xinbin (Age structure and growth characteristics of phyllids in the upper reaches of the Nujiang River, Freshwater Fisheries , 2019(04)); Li Yaopeng conducted a research on the biological characteristics and protection of the phyllotrichia, Li Yaopeng (Biological characteristics and protection suggestions of the phyllotrichia, Hebei Fishery, 2016(03)); Zhu Tingbing et al. Research on the feeding habits of the phyllotrichia, Zhu Tingbing, Li Fei, Yang De (The feeding habits of the fishes in the upper reaches of the Jinsha River and the phyllotrichia, Resources and Environment of the Yangtze River Basin, 2016 (07)), but There is no relevant research on other aspects of the baldfish, especially the artificial reproduction technology, and China is still in a blank stage in the regulation and protection of the artificial breeding of the baldfish.

Images