Compensatory Feeding and Growth Rates of a SnaiI Common to the Great Lakes Region: Elimia liviscens (Menke)
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Authors
Jameson, Patrick
Issue Date
1998
Type
Thesis
Language
en_US
Keywords
Alternative Title
Abstract
This was an experiment imitating eutrophication of a stream using periphyton
and a grazing snail common to the Great Lakes region named Elimia liviscens
(Menke). The purpose of the experiment was to observe if compensatory feeding
exists in these snails and the effect of differing periphyton on growth rates. The
experiment first manipulated the chemistry of periphyton by adding nutrients as
nitrates and phosphates. Periphyton was raised on tiles with four chemical treatments
and then fed to biofilm grazing snails. Compensatory feeding was found not to occur
with respect to different alga chemistry treatments. Growth rates were shown to be
consistent for all but two low quantity treatments lacking phosphorus nutrient
additions. The growth rates that were consistently high contained high and low
quantity treatments showing a possible limitation of growth rate for Elimia liviscens.
Description
iv, 27 p.
Citation
Publisher
Kalamazoo College
License
U.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.