(full paper is archived in the Miller Library)
Title: Antibacterial and lysozyme activity in selected polychaetes of Monterey Bay
Student Author(s): Keegan, Christopher
Faculty Advisor(s): Phillips, John H
Location: Final Papers Biology 175H
Date: June 1976
Abstract: Through the use of two bio-assays, fourteen species of polychaetes were evaluated for antibacterial and lysozyme activity. The assays were performed against four species of test bacteria, Microccuss lysodeikticus, Bacillus subtilis, Escherichia coli, and Pseduomonas florescens. Two species of polychaete, Cirriformia spirabrancha and Halosydna brevisetosa, were found to have activity over the full range of test microbes. Two more species, Dodecaceria fewkesi and Nerinides acuta, exhibited action against all but Escherichia coli. The remaining ten polychaetes, Myxicola infundibulum, Megalomma splendida, Arabella iricolor, Lumbrineris zonata, Arenicola cristata, Neoamphitrite robusta, Phyllochaetopterus prolifica, Dorvillea moniloceras, Orbinia johnsoni, Ophidromus pugettensis, and Nereis grubei, evidenced activity ranging from none to positive results against two species of test bacteria. One polychaete, A. cristata, was found to contain a lytic agent similar to the Lysozyme present in Chicken's egg white, and present in higher concentrations.