Title: Paramecium Ecology: Electromigration for Field Samples and Observations on Density
Abstract: EcologyVolume 45, Issue 2 p. 373-376 Article Paramecium Ecology: Electromigration for Field Samples and Observations on Density Nelson G. Hairston, Nelson G. HairstonSearch for more papers by this authorSara L. Kellermann, Sara L. KellermannSearch for more papers by this author Nelson G. Hairston, Nelson G. HairstonSearch for more papers by this authorSara L. Kellermann, Sara L. KellermannSearch for more papers by this author First published: 01 April 1964 https://doi.org/10.2307/1933852Citations: 13AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Direct electric current can be used to extract paramecia from samples of mud and water. Oval plastic dishes, 17 x 5.5 x 3.2 cm, hold the samples. Specimens are protected from the wire leads with agar—filled U tubes, connected with the dish by glass siphons. A voltage drop of 1.75 to 3.0 volts between siphons is employed for 3 successive periods of 30 min each. The animals migrate to the cathode. Samples taken when the water is colder than 10 C are allowed to stand at room temperature for 2 hr before electromigration. The method is estimated to be around 95% efficient in removing present. A significant increase in abundance has been observed in the field during a period of 10 days when the water temperature remained at 4 C. The increase was comparable to what can be obtained in the laboratory at 5 C. The maximum density of paramecia (P. caudatum plus P. aurelia) observed was 12.5 per ml or 250 per cm 2 of surface. Other small invertebrates are amenable to collection by the electromigration technique, but not all species migrate equally well. Citing Literature Volume45, Issue2April 1964Pages 373-376 RelatedInformation
Publication Year: 1964
Publication Date: 1964-04-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 19
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot