Hopkins Marine Station Student Paper

Browse Titles | Search Citations & Abstracts

(full paper is archived in the Miller Library)

Title: Response to osmotic stress in vertically separated populations of an intertidal chiton, Nuttallina californica (Mollusca: Polyplacophora)
Student Author(s): Simonsen, Marilou
Faculty Advisor(s): Baxter, Chuck
%E Burnett, Robin
Pages: 12
Location: Final Papers Biology 175H
Date: June 1974
Keywords: chiton
Abstract: 1. High intertidal Nutallina californica can cope with osmotic stress better than the low intertidal chitons as shown by their smaller weight change. 2. The low intertidal chitons have a slower initial rate of weight loss in hypertonic seawater. 3. Attached and unattached animals reach the same equilibrium point so behavior alone can't explaint the differences in osmotic response. 4. There is a large deviation from predictied weight changes in 50% and 75% seawater which shows that both populations do exhibit some regulation, but with a difference in effectiveness.
Notes: Publ 1975, Veliger 18 (Suppl): 113-116