Method for preventing and controlling copepods in stichopus japonicus seedling culture

Abstract

The invention discloses a method for preventing and controlling copepods in stichopus japonicus seedling culture. The method is characterized by comprising the following steps: selecting jelly fish seedlings with the umbrella diameter of 3-4 cm; putting 4-5 jelly fish seedlings into each cubic meter of water in a pond with copepods in a stichopus japonicus seedling culture workshop; determining the total number of jelly fish seedlings put into each pond, wherein the jelly fish seedlings eat the copepods in the stichopus japonicus seedling culture pond, and can eat over 95% of the copepods in the stichopus japonicus seedling culture pond after 1-2 days without hurting the young stichopus japonicus; and finally fishing out the jelly fishes in the stichopus japonicus seedling culture pond and putting into other ponds with copepods to eat the copepods continuously, wherein feeding and water exchange management during the stichopus japonicus seedling culture are the same as normal management. By adopting the method disclosed by the invention, the jelly fish seedlings can be uniformly distributed in water to continuously eat copepods in water so that the copepods in the stichopus japonicus seedling culture pond are eaten without using medicine; and moreover, the method prevents the death of stichopus japonicus seedlings caused by the copepods in the stichopus japonicus production, improves the survival rate of stichopus japonicus and provides guarantee to the stable high yield of stichopus japonicus seedlings on one hand, and on the other hand, reduces the application of trichlorfon and miezaoling, improves the quality of stichopus japonicus seedlings and is environment-friendly while culturing the jelly fishes and reducing the production cost.

Description

technical field [0001] The invention relates to a method for raising sea cucumber seedlings, in particular to a method for preventing copepods in raising sea cucumber seedlings. Background technique [0002] Sea cucumber is one of the eight treasures of seafood in my country. After entering the 21st century, with the deepening of people's understanding of the health effects of sea cucumber and the breakthrough of breeding technology, the breeding area has continued to expand, thereby promoting the continuous development of sea cucumber seedling industry. The quality and yield of seedlings are the main factors limiting the healthy and sustainable development of sea cucumber aquaculture. Therefore, the stable and high yield of sea cucumber seedlings is very important. Jellyfish is an edible jellyfish that lives in warm water oceans. It feeds on small plankton, among which copepods, rotifers, and Artemia larvae are its main bait. In the cultivation of sea cucumber seedlings, co...

AI Technical Summary

Problems solved by technology

In the cultivation of sea cucumber seedlings, copepods are one of the main enemies during the cultivation of juvenile ginseng, which has a great impact on juvenile ginseng and often cause the entire army of sea cucumber seedlings to be wiped out. Trichlorfon powder and Mifenex are used to kill. On the one hand, the damage to sea cucumber seedlings is relatively large and the mortality rate is increased. On the other hand, drug residues are likely to occur on sea cucumber seedlings, which affects the quality of the product. It also pollutes the environment, therefore, there is an urgent need for a method of killing copepods that does not harm the sea cucumber seedlings, does not cause drug residues in the sea cucumber seedlings, and does not pollute the environment.