Daphnia magna domestication method and application thereof

Abstract

The invention provides a daphnia magna domestication method and application thereof. The method comprises the following steps: feeding daphnia magna into a domestication pool, cultivating the daphnia magna for a certain time period with specific domestication food, repeatedly domesticating and screening dominant species, and performing stabilization and rejuvenation to finally domesticate the daphnia magna into natural enemies of cyanophyta. The invention further discloses the domestication food for domesticating the daphnia magna and the application of the daphnia magna domestication method to the field of ecological water body remediation. The daphnia magna domesticated by the method has the characteristics of large individuals, high cyanophycean toxin conversion capability and high outdoor stability; when the domesticated daphnia magna is used for ecological remediation, underwater lighting conditions can be improved, the clarity of a water body can be rapidly improved, and quick response, environment friendliness, low carbon and high efficiency are achieved.

Description

technical field [0001] The invention relates to the field of ecological restoration of water bodies, in particular to a domestication method of Daphnia magna and its application in the field of ecological restoration of water bodies. Background technique [0002] Eutrophication of water body refers to the phenomenon that inorganic nutrients such as nitrogen and phosphorus enter relatively closed water bodies with poor flow, resulting in the proliferation of algae and other aquatic plants, the decrease of dissolved oxygen content, the deterioration of water quality, and the massive death of other aquatic organisms. In recent years, the eutrophication of rivers and lakes in my country has developed rapidly. The "2013 China Environmental Status Bulletin" issued by the Ministry of Environmental Protection in June 2014 pointed out that the Yangtze River, Yellow River, Pearl River, Songhua River, Huaihe River, Haihe River, Liaohe River, Zhejiang and Fujian Among the nationally cont...

AI Technical Summary

Problems solved by technology

[0006] Water ecological restoration technology has become a new type of water pollution control technology that started late and developed rapidly. Although it has been widely recognized, in the actual project implementation process, domestic and foreign experts in the same industry have encountered problems due to the inability to improve underwater lighting. The bottleneck problem of the rapid and effective construction of submerged plant communities and aquatic ecosystems

In layman's terms, it means that the light cannot enter the bottom of the water normally, and the constructed underwater biological community cannot grow normally, which leads to the inability to maintain the ecological restoration effect of the water body for a long time.

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