Laboratory predator-prey testing techniques should prove to be a useful 
tool in future pollution research. As noted, the various techniques available 
offer different approaches to the question of changes in prey vulnerability. The 
relative merits of each must be weighed with due consideration to the normal 
ecology of the predator and prey utilized, and the biological variables which 
must be controlled. 
ACKNOWLEDGEMENTS 
I would like to thank both Dr. Don C. Miller who suggested this project, and 
the staff of the EPA, Environmental Research Laboratory for their cooperation 
and helpful suggestions. I give special thanks to Miss Elaina Kenyon for her 
invaluable assistance. This work was completed in partial fulfillment of the 
requirements for Master of Science, Univ. Rhode Island. 
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