13
Views
1
CrossRef citations to date
0
Altmetric
Original Articles

Specific gravity and dropping speed in eggs of Oncomelania hupensis, a snail intermediate host of Schistosomiasis

, , , , , , & show all
Pages 31-36 | Published online: 25 Jun 2013
 

Abstract

Oncomelania 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 was found to be 2.29 g/cm3; secondly, the range of dropping speed of the snail eggs through a water column was found to be 1.19 to 3.77 cm/s; thirdly, a formula for 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 scheme, and also to river management, where dispersal of snails and their eggs needs to be controlled.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.