Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: The effects of unchlorinated and chlorinated sewage on sea urchin fertilization
Student Author(s): Muchmore, Douglas B.
Faculty Advisor(s): Epel, David
Pages: 22
Location: Final Papers Biology 175H
Date: June 1970
Keywords: sewage pollution
Abstract: 1) Unchlorinated sewage is a relatively mild fertilization inhibitor. 2) Chlorinated sewage is a very strong fertilization inhibitor, and a concentration of available chlorine as low as 0.04 ppm can reduce fertilization. 3) The primary effect of both chlorinated and unchlorinated sewage is on the sperm. 4) The effect of unchlorinated sewage is partially reversible. 5) The sodium hypochlorite - sodium thiosulfate pair is a potential tool in rate study determinations of fertilizations.
Notes: Publ 1973, Mar. Biol. 19: 93-95