Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: A tidal rhythm in the terrestrial sand beach amphipod Orchestoidia corniculata
Student Author(s): McGinnis, James W. Jr.
Faculty Advisor(s): Gilmnartin, Malvern
Pages: 23
Location: Final Papers Biology 175H
Date: June 1972
Keywords: sandy beaches
Abstract: Populations of Orchestoidia corniculata, maintained in the laboratory under a variety of unnatural conditions, displayed the same activity pattern as a field population monitored during the same 8 day period. After eight days, the experimental populations begain to vary from the natural populations in a way to be expected if the amphipods possessed an endogenous rhythm in phase with the tides.