Large-scale cultivation method for marine floating harpacticoida

Abstract

The invention discloses a large-scale cultivation method for marine floating harpacticoida for improving the cultivation efficiency, reducing the production cost, and providing reliable food supply for grow seedlings of marine economic animals. The method comprises the following steps that: the salinity of water for cultivating the harpacticoida is 20ppt, the temperature is 24 DEG C, the dissolved oxygen of the water is more than 5 milligrams per liter, the pH is between 7 and 8, the bait is at least one of isochrysis zhanjiangensis, dunaliella salina and chaetocetros muelleri, the initial density of the harpacticoida cultivation is 50 to 100 ind. / l cultivation water, the supply amount of the bait is 5 to 10 liters every day, 300 liters of cultivation water is updated every day, and the harpacticoida is cultivated till the density of the harpacticoida is at least 1,500 ind. / ml; and the harpacticoida in 500 liters of water is harvested every day and the fresh cultivation water is supplied, the using amount of the bait is 10 to 15 liters every day, and the harpacticoida is continuously cultivated for 30 to 50 days.

Description

Technical field: [0001] The present invention relates to a method for cultivating marine bait, in particular a method for cultivating large-scale marine planktonic daphnia that can improve breeding efficiency, reduce production costs, and provide reliable food supply for raising seedlings of marine economic animals. Background technique: [0002] In the larval stage of marine economic animals (fish and crustaceans), Daphnia mammoth is a suitable larval bait, and artificial breeding of Daphnia mammoth as a bait for the larval stage of marine economic animals began in the 1960s. According to the statistics of the World Aquaculture Association in 2004, more than 80 species of marine fishes, shrimps and crabs have used Daphnia mammothus as food in their larvae cultivation stage. Therefore, the quantity and quality of Daphnia mammoth will determine the survival rate and quality of seedlings in the breeding process of marine economic animals to some extent, and then affect the cul...

AI Technical Summary

Problems solved by technology

The traditional factory culture of Daphnia mammoth requires a large breeding space, and often requires the construction of special breeding rooms for Daphnia mammoth and algae. In addition, due to the limitations of breeding methods, the yield of Daphnia mammoth per unit of water body is low (<50ind. / l), increased the breeding cost of Daphnia mammoth, and the cultivation of Daphnia mammoth is very unstable, prone to breeding "collapse" phenomenon, brought huge loss to breeding production