Study of Dropping Speed in Eggs of Oncomelania hupensis, a Snail Intermediate Host of Schistosomiasis

Authors

  • Xingjian Xu Hubei Institute of Schistosomiasis Control, Wuhan 430070, The People’s Republic of China
  • Xianxiang Yang Hubei Institute of Schistosomiasis Control, Wuhan 430070, The People’s Republic of China
  • Xiapin Li Hubei Institute of Schistosomiasis Control, Wuhan 430070, The People’s Republic of China
  • Wei Zhang Science Institute of Yangtze River, Water Conservancy Commission of Yangtze River, Wuhan, The People’s Republic of China
  • Qingsang Pan Science Institute of Yangtze River, Water Conservancy Commission of Yangtze River, Wuhan, The People’s Republic of China
  • Zhengan Xiong Science Institute of Yangtze River, Water Conservancy Commission of Yangtze River, Wuhan, The People’s Republic of China

Keywords:

dropping speed, Oncomelania hupensis, snail eggs

Abstract

Oncomelana hupensis (Gredler, 1881) is an intermediate host of Schistosomiasis japonica in China. In order to understand the factors controlling sedimentation and drifting of adult snails and snail eggs in rivers, three aspects were investigated by experiment. Firstly, the specific gravity of the snail eggs which was found to be 2.29 g/cm3 ; secondly, the range of dropping speed of the snail eggs through a water column which was found to be 1.19 to 3.77 cm/s; thirdly, a formula to determine dropping speed of the eggs was established. The formula was statistically validated by comparison with observed values. The results are relevant to both the development and design of irrigation schemes, and also to river management, where dispersal of snails and their eggs needs to be controlled.

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Published

2000-03-31

How to Cite

Xu, Xingjian, Xianxiang Yang, Xiapin Li, Wei Zhang, Qingsang Pan, and Zhengan Xiong. 2000. “Study of Dropping Speed in Eggs of Oncomelania Hupensis, a Snail Intermediate Host of Schistosomiasis”. Agriculture and Natural Resources 34 (1). Bangkok, Thailand:25-29. https://li01.tci-thaijo.org/index.php/anres/article/view/240372.

Issue

Vol. 34 No. 1 (2000): January-March

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.