Method for incubating largemouth basses ahead of time

Abstract

The invention discloses a method for incubating largemouth basses ahead of time. By using the method, the largemouth basses are bred in a greenhouse, sexual maturity is achieved ahead of time, and the largemouth basses are bred artificially. The method comprises the following steps of selecting largemouth basses with the weight of 0.5-0.8 kilogram in the middle ten days of the October and breeding the largemouth basses in the greenhouse in cold days; controlling the temperature of water from the middle ten days of the October, controlling the temperature of the water in the January to be in a range of 11-13 DEG C, then gradually raising the temperature of the water, and raising the temperature of the water to be in a range of 20-22 DEG C in middle ten days of the March; anatomically observing the condition of sexual maturity of parent basses; injecting oxytocin to the parent basses at the beginning of the April, and enabling the parent basses to lay eggs in a plastic-covered tunnel with palm sheets; and placing the palm sheets with germ cells in an indoor incubation pond and incubating the germ cells. By using the method, 1281 fries with the total length of 3.5 millimeters are obtained. At the present stage, largemouth basses cannot be artificially incubated in the northern China, and particularly, the largemouth basses cannot be incubated in the April of the northern China. The largemouth basses fries can be obtained ahead of time for 40 days. The growing period of the fries in the current year is prolonged for 40 days.

Description

technical field [0001] The invention belongs to the technical field of aquaculture and relates to a method for early hatching largemouth bass. Background technique [0002] largemouth bass ( Micropterus salmoides salmoides ), commonly known as California perch, belongs to Perciformes, Perciformes, Sunfishidae, and Black Perch. Originally distributed in southeastern North America from Quebec and Ontario, Canada in the north, to the Mississippi Canyon in the west. It has been introduced to many countries and regions in the world. In mainland China, largemouth bass was introduced from Taiwan to Guangdong Province in 1983, and has now been extended to many provinces across the country, becoming one of the main freshwater aquaculture species in China. Largemouth bass has the advantages of strong adaptability, fast growth, easy catch, and short breeding cycle. In addition, the meat is delicious and tender, without intermuscular spines, and has a beautiful appearance. delicious...

AI Technical Summary

Problems solved by technology

[0005] In the Tianjin area, the water temperature can be stabilized above 20°C after May 20, and there have been no reports of large-scale artificial breeding of largemouth bass in areas north of the Yellow River.