Jaeckle, Faculty Advisor, William

Ross, Stephanie R.

English

Digital Commons @ Illinois Wesleyan University

Illinois Wesleyan UniversityDigital Commons @ IWUJohn Wesley Powell Student ResearchConference 2010, 21st Annual JWP ConferenceApr 10th, 10:00 AM - 11:00 AMThe Uptake of Dissolved Molecules by theFreshwater Rotifer, Asplanchna PriodontaStephanie R. RossIllinois Wesleyan UniversityWilliam Jaeckle, Faculty AdvisorIllinois Wesleyan UniversityFollow this and additional works at: http://digitalcommons.iwu.edu/jwprcPart of the Biology CommonsThis Event is brought to you for free and open access by The Ames Library, the Andrew W. Mellon Center for Curricular and FacultyDevelopment, the Office of the Provost and the Office of the President. It has been accepted for inclusion in Digital Commons @ IWU bythe faculty at Illinois Wesleyan University. For more information, please contact digitalcommons@iwu.edu.©Copyright is owned by the author of this document.Ross, Stephanie R. and Jaeckle, Faculty Advisor, William, "The Uptake of Dissolved Molecules by the Freshwater Rotifer,Asplanchna Priodonta" (2010). John Wesley Powell Student Research Conference. 3.http://digitalcommons.iwu.edu/jwprc/2010/oralpres/3THE JOHN WESLEY POWELL STUDENT RESEARCH CONFERENCE - APRIL 2010 Oral Presentation 01.2 THE UPTAKE OF DISSOLVED MOLECULES BY THE FRESHWATER ROTIFER, ASPLANCHNA PRIODONTA Stephanie R. Ross and William Jaeckle* Biology Department, Illinois Wesleyan University DOM (dissolved organic matter) is an abundant potential source of nutrition for aquatic invertebrates, however, its nutritional significance is not well documented. Rotifers are water aquatic metazoans which· utilize a ciliated corona for food acquisition. The carnivorous freshwater roHfer, Asplanchna priodonta, was exposed to labeled proteins and polysaccharides at substrate concentrations of::; ImglmL for 1-18 hours. Initially, the labels were observed within the stomach lumen and gastric epithelium. With extended exposure, the intensity of the label increased and was detected within the body cavity. These results suggest that the gastric·cavity is continually exposed to freshwater and DOM present may be absorbed. This is consistent with previous studies describing digestion as initially extracellular and subsequently intracellular within endocytotic vesicles. The presence of labeled compounds within stomach cells and the body cavity of A. priodonta demonstrates this species's ability to digest and assimilate DOM as a possible source of nutrition. 

The Uptake of Dissolved Molecules by the Freshwater Rotifer, \u3cem\u3eAsplanchna Priodonta\u3cem\u3e

https://digitalcommons.iwu.edu/cgi/viewcontent.cgi?article=2479&amp;context=jwprc

The Uptake of Dissolved Molecules by the Freshwater Rotifer, \u3cem\u3eAsplanchna Priodonta\u3cem\u3e

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