Skip to main content Accessibility help
×
Home
Hostname: page-component-684899dbb8-7wlv9 Total loading time: 0.302 Render date: 2022-05-19T21:45:37.317Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "useRatesEcommerce": false, "useNewApi": true }

The Effect of Sublethal Concentrations of the Molluscicide Triphenyl Lead Acetate on Biomphalaria glabrata (Say) and on the Development of Schistosoma mansoni in the Snail

Published online by Cambridge University Press:  05 June 2009

G. Webbe
Affiliation:
London School of Hygiene and Tropical Medicine

Extract

1. B. glabrata exposed to the sublethal concentrations (0·04 ppm, 0·03 ppm and 0·02 ppm) of TPLA died from the effects of the molluscicide over a period of time. Most of the deaths occurred between the 10th and 35th days after treatment, showing that although TPLA is slow acting, its effect is not continuous but restricted to a limited period of time.

2. 0·01 ppm of TPLA was chosen as a sublethal concentration to study the effect of the molluscicide on the development of S. mansoni in B. glabrata.

3. 240 B. glabrata were infected with S. mansoni, and 40 of these were treated with 0·01 ppm of TPLA 4 days before infection. The remaining 200 were divided into 5 groups of 40 each, one group being maintained as a control and the other four treated 2, 10,15 and 20 days postinfection respectively. Other suitable controls for comparison were also maintained.

4. The infection rate in all groups was high, and comparison with the control showed that there was no significant difference in infection rate between the treated groups and the control group at the 5% level. However, the infection rate in the preinfection treated group was lower than in the control group and significant at the 10% level.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1972

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Frick, L. P. and De Jimenez, W. Q., 1964.—“Molluscicidal properties of three organo-tin compounds revealed by 6-hour and 24-hour exposures against representative stages and sizes of Australorbis glabratus”. Bull. Wld Hlth Org., 31, 429431.Google Scholar
Hopf, H. S. and Muller, R. L., 1962.—“Laboratory breeding and testing of Atislralorbis glabratus for molluscicidal screening.” Bull. Wld Hlth Org., 27, 783789.Google ScholarPubMed
Hopf, H. S., Duncan, J., Beesley, S. S., Weblev, D. J. and Sturrock, R. F., 1967.—“Molluscicidal properties of organo-tin and organo-lead compounds with particular reference to triphenyl lead acetate.” Bull. Wld Hlth Org., 36, 955961.Google Scholar
McClelland, W. F. J., 1965.—“The production of cercariae by Schistosoma mansoni and Schistosoma haemalobium and methods of stimulating cercariae in suspension.” Bull. Wld Hlth Org., 33, 270276.Google Scholar
Massoud, J. and Webbe, G., 1969.—“The effect of sub-lethal doses of the molluscicide (N-tritylmorpholine) on the development of Schistosoma mansoni in Biomphalaria glabrata (Say).” J. Helminth., 43, 99110.CrossRefGoogle Scholar
Sturrock, R. F., 1966.—“The effect of sub-lethal doses of a molluscicide (Bayluscide) on the development of Schistosoma mansoni in Biomphalaria sudanica tanganyicensis.” Bull. Wld Hlth Org., 34, 277283.Google Scholar
Warren, K. S. and Weisberger, A. S., 1966a.—“Suppression of schistosomiasis in snails by Chloramphenicol.” Nature, Lond., 209, 422423.CrossRefGoogle ScholarPubMed
Warren, K. S. and Weisberger, A. S., 1966b.—“The treatment of schistosomiasis mansoni with Chloramphenicol.” Amer. J. trop. Med. Hyg., 15, 342350.CrossRefGoogle ScholarPubMed
Warren, K. S. and Weisberger, A. S., 1967.—“Molluscan schistosomiasis mansoni: Effect of 2 analogues of Chloramphenicol on both parasite and host.” Proc., Soc. exp. Biol. Med., 124, 789791.CrossRefGoogle Scholar
Webbe, G. and Sturrock, R. F., 1964.—“Laboratory tests of some new molluscicides in Tanganyika.” Ann. trop. Med. Parasit., 58, 234239.CrossRefGoogle ScholarPubMed
Who, 1965.—“Molluscicide screening and evaluation.” Bull. Wld Hlth Org., 33, 567581.Google Scholar
Yarinsky, A. and Freele, H., 1970.—“A comparison of molluscicidal and mollusc inhibitory activity of hycanthone and lucanthone and the effect of the drugs on the development of Schistosoma mansoni in the snail intermediate host Australorbis glabratus.” J. trop. Med. Hyg., 73, 2327.Google Scholar
16
Cited by

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

The Effect of Sublethal Concentrations of the Molluscicide Triphenyl Lead Acetate on Biomphalaria glabrata (Say) and on the Development of Schistosoma mansoni in the Snail
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

The Effect of Sublethal Concentrations of the Molluscicide Triphenyl Lead Acetate on Biomphalaria glabrata (Say) and on the Development of Schistosoma mansoni in the Snail
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

The Effect of Sublethal Concentrations of the Molluscicide Triphenyl Lead Acetate on Biomphalaria glabrata (Say) and on the Development of Schistosoma mansoni in the Snail
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *