(full paper is archived in the Miller Library)
Title: Activity patterns of the chiton Cyanoplax hartwegii (Mollusca: Polyplacophora)
Student Author(s): Lyman, Betsy Wentworth
Faculty Advisor(s): Burnett, Robin
Location: Final Papers Biology 175H
Date: June 1974
Abstract: 1. The chiton Cyanoplax hartwegii found on Mussel Point in Pacific Grove, California under the brown alga Pelvetia fastigiata, is more active at night and is negatively phototactic in the lab. Protection afforded by the Pelvetia habitat might explain the considerable daytime activity that does occur. 2. The tidal cycle affects the animals' activity, greatest activity occurring at dry and awash periods. Lesser activity during the high tides may be due to the strength of the surge or to the difficulty in feeding on Pelvetia during these times. 3. Although strict homing is not exhibited by C. hartwegii, certain "campsites" on the substratum are occupied successively by different individuals. This behavior may have survival value as these sites may be consistently well-protected spots.
Notes: Publ 1975, Veliger 18 (Suppl): 62-69