Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: The assimilation and transfer of DDT residues in a hydroid: nudibranch: tetctibranch food-chain from the California coast
Student Author(s): Marian, Ronald E.
Faculty Advisor(s): Burnett, Robin
Pages: 17
Location: Final Papers Biology 175H
Date: June 1971
Keywords: marine pollution
Abstract: Preliminary investigations of several aspects of DDT residue flow through the food chain were carried out using GLC analysis and C14-DDT tracer. These consisted of measurement of field concentration levels, uptake from water, uptake through feeding, and determination of accumulation sites. Results indicate that more DDT is available to the organism over time than is accumulated, suggesting an equilibrium of DDT residue concentration between animal and environment. A thorough description of DDT flow in the food chain will require more detailed information on the kinetics at each level. The study will continue with investigation of DDT kinetics in Hermissenda.