Method for controlling pomacea canaliculata by utilizing medicinal whitmania pigra

Abstract

The invention discloses a method for controlling pomacea canaliculata by utilizing medicinal whitmania pigra. The method includes that: the medicinal whitmania pigra is used as an object; a mixing culture and killing experiment of the pomacea canaliculata and the medicinal whitmania pigra, a weight gain experiment of the medicinal whitmania pigra, and a difference contrast experiment of predation of the medicinal whitmania pigra on male and female individuals of the pomacea canaliculata are performed based on life habits that the medicinal whitmania pigra feeds on sap sucked from mollusks such as viviparid, clam, and corbicula fluminea;the difference contrast experiment of predation of the medicinal whitmania pigra on the male and female individuals of the pomacea canaliculata shows that: when the predation number difference of the medicinal whitmania pigra fluctuates between 0 and 0.4, the predation of the medicinal whitmania pigra on the pomacea canaliculata has no gender difference; when the number and the density of the pomacea canaliculata are large, the number ratio of the the pomacea canaliculata to the medicinal whitmania pigra is more than 3 : 1, the pomacea canaliculata eats dead bodies of the medicinal whitmania pigra, but in this environment, the accumulation predation number of the medicinal whitmania pigra on the pomacea canaliculata reaches maximum, and it verifies that the certain control effect of the medicinal whitmania pigra on the pomacea canaliculata can be achieved.

Description

technical field [0001] The invention relates to a method for killing adult apple snails, in particular to a method for preventing and controlling apple snails by medicinal wide-body golden leeches. Background technique [0002] Apple snails, also known as big bottle snails and apple snails, are amphibious freshwater shellfish molluscs. They belong to molluscs, gastropods, mesogastropods, bottle snails, and bottle snails. They belong to tropical and subtropical species; they are native to southern China. In the Amazon River Basin of America, apple snails were gradually introduced to Japan, the Philippines, Vietnam, Thailand and other countries as a food after the 1980s; Widely cultivated in Guangdong, and quickly spread to Guangxi, Fujian, Hainan, Zhejiang, Shanghai, Jiangsu and other places. Later, the apple snail was abandoned in the field because of its poor taste. Due to blind introduction and poor management, the apple snail is currently in China. Disasters broke out in...

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Problems solved by technology

[0006] In the control of apple snails, the development and utilization of molluscicidal plant resources is an important part of biological molluscicidal work; so far, about 1,500 species of plants have been used for molluscicidal activity tests, and many plants have been found to have killing molluscs. snail activity; but this is only a small part of the control of apple snails, and there is still a lot of room for research on the ecological control mechanism between animals

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