A kind of artificial wetland conservation method of clear water type snail

Abstract

The invention relates to a clean-water type artificial wetland conservation method for margarya. The clean-water type artificial wetland conservation method has the advantages that the margarya is conserved by selecting highland clean-water plant and ottelia acuminata wetland as the basis so as to establish a clean-water type wetland system adopting ottelia acuminata, diatom and the margarya as main producers and consumers, and the stability of the wetland system is maintained by controlling the inflow-water quality, the water exchanging period, the substrate, the water-depth range, the silicon-fertilizer adding amount and mode and the like so as to provide necessary conditions for foraging, growth and reproduction of the margarya.

Description

technical field

[0001] The invention belongs to the field of conservation of unique benthos species, and in particular relates to a method for conservation of snails (Margarya) by utilizing a clear water type artificial wetland. Background technique

[0002] Snails (Margarya) belong to Mollusca, Gastropoda, and Viviparidae. They are endemic species of benthic animals in plateau freshwater lakes in Yunnan Province. They are mainly distributed in Erhai Lake, Dianchi Lake, Fuxian Lake, Alien Lakes such as Longhu, especially Dianchi Lake and Erhai Lake have the highest yields. Yunnan has been catching snails (Margarya) for hundreds of years. Its meat is delicious and it is an important economic snail species in the local area. Before 1994, snails (Margarya) were the dominant species in lake benthos. And ecological damage, the density and biomass of snails (Margarya) have declined to a large extent after 1999, and have gradually disappeared in many lakes. At this stage, snails ...

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