Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Exogenous and endogenous control of movement in the chiton Mopolia muscosa (Mollusca: Polyplacophora)
Student Author(s): Westersund, Kristin R.
Faculty Advisor(s): Burnett, Robin
Pages: 13
Location: Final Papers Biology 175H
Date: June 1974
Keywords: chiton
Abstract: Under high intensity flourescent light, the intertidal chiton, Mopalia muscosa was shown to be negatively phototactic when left 4.5 to 27 hours. Chitons seemed to respond to tide both exogenously and endogenously by reduction of movement. The auggested tidal rhytm appears to be the mechanism by which these chitons may predict the heighths of low tides. The rhythm appears to have been rephased by a single artificial low tide of 10 to 45 minutes. Diurnal movement patterns appear to be exogenous.
Notes: Publ 1975, Veliger 18 (Suppl): 70-73