(full paper is archived in the Miller Library)
Title: Manometric measurements of respiratory activity in Acmaea digitalis and Acmaes scabra
Student Author(s): Baldwin, Simeon
Location: Final Papers Biology 175H
Date: June 1966
Abstract: Respiration in two species of limpets, Acmaea digitalis Eschsholz, 1833 and Acmaea scabra (Gould, 1848), was studied by means of Warburg manometers. In both species it was found that the maximum respiration rate occurs when the animal is submerged, and least occurs when it is exposed to air. Under damp and airial conditions A. scabra showed a much lower rate of respiration than did A. digitalis. Under conditions of increasing temperature from 10 to 25 degrees C, A. scabra increased its respiratory rate approximately 60%. A. digitalis' rate increased 23% from 10 to 20 degrees C, but at 25 its rate had decreased to less that that at 10.
Notes: Published 1968, Veliger 11(Suppl): 79-82