论文部分内容阅读
本文就夏季汛期江湖洲滩水淹后,钉螺在水下的生存繁殖以及洪水对其影响程度作了现场实验观察。结果水淹3个月后,成螺的死亡率显著高于对照组1.56倍,而子代新螺数显著高于对照组2.25倍。认为洲滩夏水冬陆的自然条件是江湖洲滩钉螺增殖率高的主要原因之一。
In this paper, after the flooding of the rivers and lakes in the summer flood season, the survival and reproduction of Oncomelania snails under water and the degree of impact of flood on them were observed experimentally. Results After three months of flooding, the mortality rate of snails was 1.56 times higher than that of the control group, while the number of snails of the offspring was significantly higher than that of the control group by 2.25 times. It is considered that the natural conditions of the summer beaches of Chau Beach are one of the main reasons for the high reproductive rate of snails in the bank of Lake.