Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: The affects of osmolality on contraction of the shell-foot retractor muscle in the limpet, Collisella digitalis
Student Author(s): Chavez, Ron D. M.
Pages: 14
Location: Final Papers Biology 175H
Date: June 1985
Keywords: biology of limpets
Abstract: The columellar muscle (foot-shell retractor) of the intertidal limpet Collisella digitalis is responsible for the tenacity with which this limpet can hold onto rock substrate in response to mechanical stress (i.e. wave action and predation) (Fretter, 1962). Consequently, dessicaiton and splash provide great osmotic stress upon this intertidal limpet. This paper describes the varying excitability and "catch" characteristics of the foot-shell retractor muscle under varying osmotic stress.