(full paper is archived in the Miller Library)
Title: Activity patterns in Pagurus samuelis and Pagurus granosimanus: I. Dispersion
Student Author(s): Ball, Eldon E. Jr
Location: Final Papers Biology 175H
Date: June 1965
Keywords: hermit crab
Abstract: Pagurus samuelis and Pagurus granosimanus show a rhythmic activity pattern in which most crabs are active at night while the number active during the day is greatly reduced. This pattern of dispersion appears to be an inverse response to intensity of illumination. Pagurus samuelis consistently becomes active earlier in the afternoon than does Pagurus granosimanus.
Notes: See also 1968, Crustaceana 14: 302-306