Method for ecological acclimation of feeding habits of wild large individual acanthogobius ommaturus

Abstract

The invention provides a method for the ecological acclimation of the feeding habits of wild large acanthogobius ommaturus and belongs to the acclimation of the feeding habits of acanthogobius ommaturus for making the acanthogobius ommaturus adaptive to artificial compound feed. The method comprises processes concerning environment, fish fry, bait and rearing with different diets, and is characterized in that: 20-centimeter-long and 80-gram health fish individuals are placed in a culture pond and cultured for 6 days without food; the initial temperature of the water in the pond is 16 DEG C, the salinity of the water is 1, the concentration of dissolved oxygen in the water is more than 4mg / ml, and the pH value of the water is 7.0 to 9.0; the environment is kept quiet and vibroacoustic stimulation is given when feeding is carried out; an upper cover of the culture pond shields light, and light simulation is given when feeding is carried out; from the 7th day on, the salinity of the water is 2, the temperature of the water rises at 0.2 DEG C each day, the fish individuals are fed with fresh and alive fingerlings at the same time and place each day; from the 17th day on, the salinity of the water is 3, and minced fresh and alive fingerling blocks are fed; from the 27th day on, the salinity of the water is 4, the feed amount of the fresh and alive fingerling blocks is reduced and artificial compound feed is fed; and from the 42nd day on, the water temperature is 23 DEG C and the salinity of the water is 4. The method is used for the acclimation of the feeding habits of acanthogobius ommaturus.

Description

Technical field: [0001] The invention relates to a feeding habit domestication method of large wild fish. Background technique: [0002] The goby belongs to the family Gobiidae of the order Perciformes, and usually has a row of black spots on the side of the body, 3-5 longitudinal black fine spots on the second dorsal fin, and a large piece at the base of the caudal fin. Black spot is one of the common fish in the Yangtze Estuary area of ​​China, and it is also distributed in the South China Sea, East China Sea, and Yellow and Bohai Sea areas. [0003] Before the body length of 20 mm, the wild goby mainly lives in plankton, and mainly feeds on the larvae of copepods and shrimps and crabs. After the body length is 20 mm, it turns into a benthic life and feeds on shrimp seedlings and crab seedlings. In the Yangtze River estuary area, the larger individual gobies feed on small fish such as gobies and wheat ear fish, as well as shrimps and crabs. According to the anatomical d...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved in the present invention is to carry out indoor artificial domestication and artificial breeding of wild large individual gobies, so that it can adapt to artificial compound feed