论文部分内容阅读
目的掌握静水不同水深条件下钉螺上爬运动状态,为探索新的防止钉螺扩散模式提供技术支撑。方法在实验室内观测玻璃圆管中不同水深钉螺上爬行为,记录钉螺上爬时间和高度,并分析静水水压对钉螺上爬运动的影响。结果通过观测,获得了钉螺静水空间分布特征,即在不同水深的玻璃管中,钉螺主要分布于静水水表和水底两层;通过拟合静水压强与钉螺上爬速度的关系,得到静水水深与钉螺爬离水面高度的回归方程,确定静水中60 cm水深是钉螺对水压敏感性的分界点;距水面80 cm以内静水中钉螺离水面高度差异不大,钉螺在深度80 cm以内的静水中爬出水面后主要集中在距水面13 cm处附近。结论钉螺在静水中的上爬速度与静水压强成反比,钉螺爬出水面后距水面高度与水体深度成反比。
Objective To grasp the climbing motion of snails under different water depths in still water and to provide technical support for exploring new diffusion modes to prevent snails. Methods The crawling behavior of snails in different depths of glass tube was observed in the laboratory. The climbing time and height of snails were recorded. The effects of hydrostatic pressure on snail climbing were analyzed. Results The spatial distribution characteristics of snail hydrostatic water was obtained through observation. The snails were mainly distributed in the hydrostatic water meter and the bottom of the water column in different depths of glass tube. By fitting the relationship between the hydrostatic pressure and the climbing speed of snail, The results showed that the water depth of 60 cm in the still water was the cut-off point of water pressure sensitivity. Within the distance of 80 cm from the water surface, the difference of the height of the snail from the water surface was not significant. After the water surface concentrated mainly in the water near the 13 cm. Conclusion The climbing speed of snails in the still water is inversely proportional to the hydrostatic pressure. The height of the snail on the water surface is inversely proportional to the depth of the water after it climbs out of the water surface.