Indoor breeding method of fry of rhinogobio ventralis sauvage et dabry

Abstract

The invention relates to an indoor breeding method of fry of rhinogobio ventralis sauvage et dabry, and belongs to the technical field of breeding of rare and endemic fishes.The method comprises the steps that according to physiological and ecological characteristics of rhinogobio ventralis sauvage et dabry at different development stages of fry, advanced fry and juvenile fishes and differences of sensitivity to main pathogenic microorganisms of ichthyophthirius multifiliis, the whole fry breeding process is divided into three stages of tending barrel micro aeration breeding, tending barrel temperature-control microflow water breeding and glass fiber cylinder imitation-ecology mixed breeding.According to the fry breeding method of the rhinogobio ventralis sauvage et dabry, artificial regulation is conducted on critical water quality environmental factors of plankton communities and water temperature on the basis of intensively studying an influence mechanism of environmental factors causing ichthyophthirius multifiliis, a traditional pond water quality regulation technology is applied to a microflow water breeding mode, a series of technical problems that in the fry breeding process, stress responses of the fry are intense, ichthyophthirius multifiliis occurs frequently, and the fry grow slowly are effectively solved, and a technical support is provided for large-scale breeding of the fry of endemic fishes in the upper Yangtze River.

Description

technical field [0001] The invention relates to a method for cultivating fish species, in particular to a method for indoor cultivating seedlings of the rare and unique fish albacore. Background technique [0002] Rhinogobioventralis Sauvageet Dabry belongs to CyPriniforme, CyPrinidae, Gobioninae, and RhinogobioBleeker, commonly known as foreign fish and soil mouse. Its meat is tender and delicious. It has high nutritional value and economic value, and is a unique small bottom fish in the upper reaches of the Yangtze River. The albacore is adapted to running water habitats and feeds on running water benthic animals such as freshwater shellfish. It is a river migratory fish that lays eggs in rapids. Its entire life cycle is completed in the river, and it is highly dependent on the habitat of flowing water. However, in recent years, due to overfishing, water pollution, and construction of water conservancy projects, the resources of the albacore have declined sharply. Quanti...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for cultivating albacus seedlings indoors, which can solve a series of technical problems such as strong stress response, frequent outbreaks of small melon worm disease and slow growth of albacore fry under artificial cultivation conditions.

According to the bottleneck technical problems of different growth and development stages, corresponding technical measures are proposed: for example, in view of the problems of strong stress response and poor vitality in the opening stage of early larvae, the present invention researches and develops a specific activator. Periodic immersion enhances the stress resistance and immune function of early larvae, and significantly improves the survival rate of fry in the opening stage; fry above 15 days old enters the high-risk period of the outbreak of small melon worms, and the present invention researches and develops temperature-controlled micro-flow water Cultivation mode, which is based on the in-depth analysis of the impact mechanism of environmental factors on the outbreak of small melon worm disease, and artificially regulates key water quality environmental factors (plankton communities, water temperature) to achieve effective disease prevention and control purposes

This model is to apply the water quality control technology of pond culture to the indoor micro-flow water culture mode, realize the combination of pond culture and micro-flow water culture mode, and effectively solve the problem of artificial culture of albacore, a bottom-dwelling fish that adapts to the flowing water habitat. The problem of frequent outbreaks of small melon worm disease under certain conditions

Images